Entries |
Document | Title | Date |
20080202470 | Fuel Supply System for a Motor Vehicle - A fuel supply system for a motor vehicle has a sucking jet pump ( | 08-28-2008 |
20080202471 | Fuel Injection System Suitable for Low-Viscosity Fuels - A fuel injection system for an internal combustion system includes an Engine Management System (EMS), a fuel feed pump, a return line, a high-pressure pump, supplying fuel under pressure to a common rail, a hydraulically operated valve forming an outlet chamber connected to the common rail and a control chamber, the valve being designed such that, in its closed position, the valve prevents the flow out of the outlet chamber, and an electrically operated pilot valve. A nozzle with a resilient member that biases the nozzle towards closing is connected to the outlet of the hydraulically operated valve in such a way that pressure at the outlet of the hydraulically operated valve tends to overcome the force of the resilient member and open the nozzle. An electrically operated spill valve is connected between the outlet of the hydraulically operated valve and the return line. | 08-28-2008 |
20080251049 | DEVICES FOR SUPPLYING FUEL UNDER HIGH PRESSURE BY TRANSFER PUMP - The invention relates to a device for supplying fuel under high pressure in which the fuel is put under high pressure by a transfer pump, characterized by the fact that it comprises two identical transfer pumps ( | 10-16-2008 |
20080264385 | Valve Control Unit for Ramjet Propulsion System as well as Guided Missile Having Such a Valve Control Unit - In a valve control unit for a ram jet propulsion system having a power unit space a valve for controlling a fuel quantity required to the propulsion system, and a valve adjusting unit which is constructed to be operable by means of an electronic control unit, the valve is combined with its valve adjusting unit and its electronic control unit to form a thermally insulated valve assembly. The valve assembly is configured for the arrangement in the power unit space. | 10-30-2008 |
20080271707 | Liquefied Gas Fuel Supply Device of Diesel Engine - In a diesel engine system of a liquefied gas fuel, the present invention aims at the prevention of storing of the liquefied gas fuel in a cam chamber even when a diesel engine repeats stopping and operation thereof without returning the liquefied gas fuel in a fuel gallery of a fuel pressurizing device such as a supply pump or an injection pump to a fuel tank. An electrically-operated compressor | 11-06-2008 |
20080271708 | Fuel Metering Unit For a High-Pressure Fuel Pump, and High-Pressure Fuel Pump - The invention relates to a fuel metering unit, in which the displaceable parts of an electromagnet are guided through two bushings in an axial direction, the bushings being located at a distance from one another. The bushings guide the armature bolt, which can be produced from a wear-resistant material, such as for example tempered steel. | 11-06-2008 |
20080302333 | Electromagnetic Drive Mechanism and a High-Pressure Fuel Supply Pump - The objective of the present invention is to dampen operating sounds of an electromagnetic drive mechanism used for a variable displacement to reduce an individual difference depending on apparatus due to the control mechanism in a high-pressure fuel supply pump change over time or installation tolerance. | 12-11-2008 |
20090025683 | DETECTION OF FUEL SYSTEM PROBLEMS - A method for detecting failures in a fuel system of a motor vehicle including monitoring a feed-forward table of a fuel pump controller that is electrically connected to a fuel pump of the fuel system. The fuel pump controller is electrically connected to a rail pressure sensor, which is coupled to the fuel injector rail. The actual fuel injector rail pressure measured by the rail pressure sensor is compared to a desired fuel injector rail pressure associated with the feed-forward table. The feed-forward table is adjusted if the actual fuel injector rail pressure is less than the desired fuel injector rail pressure. A fuel system error is signaled if an adjusted feed-forward table differs from an initial feed-forward table. A fuel system failure is signaled of the adjusted feed-forward table requires a saturation voltage of the controller. | 01-29-2009 |
20090038587 | Fuel Control for Direct Injection Fuel System - A method for controlling a direct injection fuel system of a vehicle, the method comprising generating fuel pressure via an electronically controlled lift pump and a second pump, the electronically controlled lift pump actuated responsive to a command during an initial start-up duration, translating the fuel pump command via a first mapping to drive the fuel pump, where the first mapping includes mapping a default signal to active pump operation and after the initial start-up duration, translating the fuel pump command via a second mapping to drive the fuel pump where the second mapping includes mapping the default signal to pump deactivation. This method may achieve near immediate lift pump actuation upon system power-up while preserving favorable degradation modes and maintaining a simple, cost-effective inter-module communication scheme. | 02-12-2009 |
20090064971 | FUEL INJECTION SYSTEM COMPRISING A VARIABLE FLOW RATE HIGH-PRESSURE PUMP - An injection system includes a high-pressure pump with at least one pumping element operated in a reciprocating manner by corresponding intake and discharge strokes. Each pumping element is equipped with a corresponding intake valve in communication with an intake line, fed by a low-pressure pump. An on-off solenoid valve is positioned on the intake line of the pump and is controlled by a control unit with a frequency equal to a whole multiple or submultiple of that of the pumping action, multiplied by a factor different from 1 and/or between 0.90 and 1.10, inclusive. | 03-12-2009 |
20090071442 | DIRECT METERING FUEL SYSTEM WITH AN INTEGRAL REDUNDANT MOTOR PUMP - A direct metering fuel supply system includes a plurality of axial gap motors, a fixed displacement, variable speed positive displacement piston pump, and a gas turbine engine control. Each axial gap motor is configured to be selectively energized and is operable, upon being energized, to supply a drive torque at a drive speed. The fixed displacement, variable speed positive displacement piston pump is coupled to each of the axial gap motors to receive the drive torque selectively supplied therefrom and is operable, upon receipt of the drive torque, to supply fuel at a flow rate dependent on the drive speed. The gas turbine engine control is adapted to receive fuel flow commands and is operable, in response to the fuel flow commands, to energize one of the plurality of axial gap motors. | 03-19-2009 |
20090071443 | Fuel Injection Control Apparatus for Internal Combustion Engine - A fuel injection control apparatus for an engine including one or more sensors to detect one or more operational states of engine and a fuel state, a fuel injector to activate a plunger rod thereof to inject fuel when an excitation current is supplied to a coil of the fuel injector, and a unit for precharging the coil of the fuel injector with an excitation current smaller than that required to activate the plunger rod of the fuel injector, wherein the current to be precharged to the fuel injector is adjusted according to the one ore more operational states of the engine detected by the one or more sensors. | 03-19-2009 |
20090090331 | Volumetric Efficiency Based Lift Pump Control - As one example, a method of operating a fuel delivery system of a directly injected internal combustion engine including a plurality of in-cylinder direct fuel injectors, a higher pressure fuel pump and a lower pressure fuel pump is provided. The method comprises operating the lower pressure fuel pump and the higher pressure fuel pump to maintain a prescribed fuel pressure at the fuel injectors; and varying an amount of pump work that is provided by the lower pressure fuel pump relative to the higher pressure fuel pump responsive to an indication of the efficiency of the higher pressure pump. | 04-09-2009 |
20090114189 | High pressure pump and method of reducing fluid mixing within same - Mixing a pumped fluid with a lubrication fluid within a pump can undermine the lubricity of the lubrication fluid. In order to reduce mixing of fluids within a pump of the present disclosure, a pump is provided that comprises a housing, a piston, a first annulus, and a second annulus. The housing includes an inlet for the pumped fluid, an inlet for the lubrication fluid provided at a first pressure, and a piston bore fluidly coupled to the inlet for the pumped fluid. The piston is moveable within the piston bore. The first annulus is fluidly coupled to the inlet for the lubrication fluid. The second annulus is configured to be fluidly coupled to a drain circuit provided at a second pressure less than the first pressure. The first annulus and the second annulus are located along the length of the piston bore. | 05-07-2009 |
20090114190 | High pressure pump and method of reducing fluid mixing within same - To reduce mixing of fluids within a high pressure pump, a pump is provided that comprises a housing, a piston, an annulus, and a first seal. The housing includes an inlet for a first fluid, an inlet for a second fluid, and a piston bore fluidly coupled to the inlet for the first fluid. The piston is moveable within the piston bore and has a first end exposed to the first fluid and a second end exposed to the second fluid. The annulus is defined within the piston bore and is configured to be fluidly coupled to a drain circuit having a pressure less than the pressure of the first fluid. The first seal is coupled to the housing and is located outside of the piston bore. The first seal engages the piston to create a seal that substantially prevents the second fluid from entering the piston bore. | 05-07-2009 |
20090126688 | FUEL PUMP CONTROL FOR A DIRECT INJECTION INTERNAL COMBUSTION ENGINE - A fuel pump for a direct injection internal combustion engine having a body with a valve seat. The valve includes a valve head and the valve is movably mounted to the body between an open position and a closed position. In its open position, the valve head is spaced from the valve seat white in its closed position, the valve head abuts against the valve seat and closes the valve. An electric coil upon energization moves the valve to an open position and, conversely, upon deenergization allows the valve to move to a closed position. A control circuit controls the energization of the coil to reduce the pump noise during operation of the engine, especially at low speeds. | 05-21-2009 |
20090126689 | Fuel injector having valve with opposing sealing surfaces - A control valve for a fuel injector is disclosed. The fuel injector has a nozzle member with a first end and a second end. The first end of the nozzle member has at least one orifice. In addition, the fuel injector has a drain passageway. The fuel injector also has a control chamber located at the second end of the nozzle member and at least one passageway fluidly coupled to the control chamber. The fuel injector further has a needle valve element with a tip end configured to selectively block fluid flow through the at least one orifice, and a base end fluidly coupled to the control chamber. In addition, the fuel injector has a control valve with a first generally planar surface and a second opposing generally planar surface. The control valve is selectively movable between a first position and a second position. When the control valve is in the first position, the control chamber is fluidly block from the drain passageway. When the valve is in the second position, the control chamber is fluidly coupled to the drain passageway. | 05-21-2009 |
20090145400 | FUEL INJECTION SYSTEM WITH A PLURALITY OF PRESSURE RESERVOIRS - A fuel injection system ( | 06-11-2009 |
20090145401 | Injection nozzle - An injection nozzle for a compression ignition internal combustion engine, the injection nozzle comprising: a nozzle body provided with a bore, within which a unitary valve needle is movable along a primary valve needle axis, the valve needle being engageable with a valve seating defined by the bore to control fuel delivery through first and second outlets, and including a first valve region, a second valve region and a first seat region defined by a transition between the first and second valve regions that seats against the valve seating when the nozzle is in a non-injecting state, wherein the valve needle comprises a third valve region, a relieved region defined by a transition between said second and third valve regions, the relieved region defining a first exit volume between the valve needle and the bore adjacent to the first outlet when the valve needle is lifted from the valve seating into an injecting state, and a fourth valve region having at least a part in closer proximity to the bore than said relieved region, said second outlet being disposed downstream of the fourth valve region. | 06-11-2009 |
20090217910 | CONTROL METHOD OF AN ELECTRONIC INJECTION FUEL FEEDING SYSTEM - A control method of an electronic injection fuel feeding system for an internal combustion engine and displaying at least one injector and a non-continuous flow rate fuel pump actuated by a an actuator device; the control method includes the steps of: determining the desired fuel amount which must be injected at each cycle of the internal combustion engine; driving the injector for injecting the desired fuel amount at each cycle of the internal combustion engine; determining an optimal pumping frequency of the actuator device of the fuel pump according to the desired fuel amount which must be injected at each cycle of the internal combustion engine; and actuating the actuator device of the fuel pump at the optimal pumping frequency. | 09-03-2009 |
20090241901 | IN-LINE ELECTRO-MECHANICAL MODULATING DEVICE TO MODULATE FUEL FLOW IN FUEL RAILS TO REDUCE NOISE - Systems and methods for modulating fuel flow of a fuel delivery system including direct injection fuel injectors of an engine to mitigate engine noise are provided. An example of such systems may include a modulating device located in the fuel delivery system upstream of the direct injection fuel injectors, the modulating device configured to generate mitigating fuel pressure pulse(s) for attenuating fuel pressure pulse(s) generated by actuation of the direct injection fuel injectors. An example of such methods may include adjusting the modulating device responsive to actuation of the direct injection injectors, wherein operation of the modulating device is varied responsive to variation of direct injection fuel injector actuation. | 10-01-2009 |
20100024770 | FUEL DELIVERY SYSTEM FOR A MULTI-FUEL ENGINE - A fuel delivery system for a multi-fuel internal combustion engine and an approach for operating the fuel delivery system are provided. The fuel delivery system can be operated in two or more different fuel delivery modes according to operating conditions of the engine or fuel delivery system. A first example mode can be performed to concurrently deliver two or more fuels to the engine. A second example mode can be performed to transfer fuel from a first fuel storage tank to a second fuel storage tank. A third example mode can be performed to supply a fuel from a first fuel storage tank to at least two fuel injectors of each cylinder of the engine. In some embodiments, the various modes of operation may be selected by varying a fuel pressure that is provided by the fuel delivery system. | 02-04-2010 |
20100024771 | FUEL DELIVERY SYSTEM FOR MULTI-FUEL ENGINE - A fuel delivery system for an internal combustion engine is provided, which includes a valve including at least a first valve setting and a second valve setting; a first fuel storage tank fluidly coupled with a first fuel receiving end of the valve; a second fuel storage tank fluidly coupled with a second fuel receiving end of the valve; a port fuel injector fluidly coupled with a first fuel dispensing end of the valve, said port fuel injector configured to deliver fuel to a cylinder of the internal combustion engine; a direct fuel injector fluidly coupled with a second fuel dispensing end of the valve, said direct fuel injector configured to deliver fuel to the cylinder of the internal combustion engine; and a control system configured to selected one of the first valve setting and the second valve setting in response to an operating condition. | 02-04-2010 |
20100024772 | FUEL SYSTEM FOR MULTI-FUEL ENGINE - A fuel system and a method of operation of the fuel system are described in the context of a multi-fuel internal combustion engine. As a non-limiting example, the method includes: varying a composition of fuel supplied to an inlet of a fuel pump responsive to engine output; operating the fuel pump to provide pressurized fuel at an outlet of the fuel pump using the fuel received at the inlet of the fuel pump; supplying the pressurized fuel from the outlet of the fuel pump to the internal combustion engine and to a fuel separator; and varying a proportion of the pressurized fuel supplied to the internal combustion engine relative to the fuel separator responsive to the engine output. | 02-04-2010 |
20100043752 | FUEL SUPPLY DEVICE FOR INTERNAL COMBUSTION ENGINE - A device includes two fuel injection systems and a pulsation damper. Each system includes fuel injection valves and first and second delivery pipes. While fuel is pumped to the two fuel injection systems with a common fuel pump, the device intermittently drives the fuel injection valves to open, thereby supplying the fuel within the delivery pipes from the fuel injection valves. The paths through which the fuel passes include a first passageway, which has the first delivery pipe and a communication path, and a second passageway which has a branch path and the second delivery pipe. An opposing portion opposite to the opening of a placement channel in the first delivery pipe includes the opening of the branch path in the first delivery pipe. This enables one pulsation damper to precisely suppress fuel pressure pulsations occurring in the two delivery pipes. | 02-25-2010 |
20100132667 | FUEL INJECTION SYSTEM WITH PRESSURE BOOSTING - The invention relates to a fuel injection system for an internal combustion engine having a high pressure pump, a high pressure reservoir, a plurality of fuel injectors, a hydraulic pressure booster, and a control valve for actuating the hydraulic pressure booster. The hydraulic pressure booster is provided centrally for all of the fuel injectors. The central hydraulic pressure booster is disposed between the high pressure pump and the high pressure reservoir. | 06-03-2010 |
20100139619 | Fuel delivery system having multi-output pump - A fuel delivery system for a combustion engine is provided. The fuel delivery system includes an exhaust treatment device, a fuel injection unit, a fuel supply, and a fuel pump. The fuel pump includes at least one inlet configured to receive fuel from the fuel supply. A first fixed-output pumping element is configured to generate a first fuel flow at a first pressure and a first flow rate. A second fixed-output pumping element is configured to generate a second fuel flow at a second pressure and a second flow rate. At least one of the second pressure and the second flow rate is different from the first pressure and the first flow rate. A first outlet is configured to direct the first fuel flow to the fuel injection unit. A second outlet is configured to direct the second fuel flow to the exhaust treatment device. | 06-10-2010 |
20100147266 | Automotive high pressure pump solenoid valve with limp home calibration - A module solenoid valve ( | 06-17-2010 |
20100154744 | PRESSURE BOOSTER WITH INTEGRATED PRESSURE RESERVOIR - The invention relates to a high-pressure injection system, in particular for auto-igniting internal combustion engines, with at least one high pressure pump and a high pressure reservoir, through which at least one fuel injector is supplied with a fuel under pressure. The high-pressure injection system comprises at least one pressure booster unit which has at least two pressure boosters, each with a high pressure piston which can be driven independently of the other. | 06-24-2010 |
20100154745 | VEHICLE BURNER - A vehicle burner ( | 06-24-2010 |
20100242915 | SAFETY VALVE AND HIGH-PRESSURE PUMP COMPRISING SAID SAFETY VALVE - A fuel safety valve arranged in a fuel supply line between a low-pressure pump and a high-pressure pump, is provided with a valve body which defines a cylindrical cavity having a longitudinal axis and being connected to a duct and a portion of a discharge duct in communication with the cylindrical cavity, a piston sliding with respect to the valve body in the cylindrical cavity along the longitudinal axis, and a spring housed in a variable-volume chamber defined by a portion of the cylindrical cavity between the piston and a closure element. The piston is provided with a through hole supplied with the fuel leading into the variable-volume chamber, and the valve body being provided with a fuel discharge hole connecting the variable-volume chamber to the discharge duct. | 09-30-2010 |
20100269789 | METERING FUEL PUMP - A device and method for controlling the flow of a gaseous fuel from a fuel supply to a pressurized combustion chamber. A fuel pump is included in the gas train from supply to chamber. The fuel pump increases the pressure of the gas to allow efficient injection into the chamber. The pump is modulated to control the fuel flow. Both alternating current and pulse-width-modulated direct current signals may be used to control the flow. The pump may be a piston pump or a diaphragm pump. Feedback may be provided from sensors that determine operating parameters of the engine and such sensor signals may be used by the controller to maintain a parameter, such as temperature, at a specified value. An acoustic filter can be included in the gas train to significantly reduce gas flow pulsations generated by the pump. This filter improves the uniformity of the combustion process. | 10-28-2010 |
20100275880 | FUEL DELIVERY SYSTEM DIAGNOSTICS AFTER SHUT-DOWN - A method for operation of a fuel delivery system in an internal combustion engine including a lower pressure pump, a higher pressure pump fluidly coupled downstream of the lower pressure pump, and a fuel rail fluidly coupled downstream of the high pressure pump. The method including initiating a mitigating action based on a fuel rail pressure response, the fuel rail pressure response occurring after an engine shut-down, where the mitigating action includes disabling vehicle operation if fuel rail pressure drops below a threshold value after activation of one of the pumps, the activation occurring before a subsequent engine start, the subsequent engine start occurring after the engine shut-down, and where the mitigating action includes adjusting operation of one of the pumps during the subsequent engine start if fuel rail pressure achieves at least the threshold value after or during the activation. | 11-04-2010 |
20100288233 | FUEL METERING UNIT FOR A FUEL METERING UNIT FOR A HIGH-PRESSURE FUEL PUMP, AND HIGH-PRESSURE FUEL PUMP - The invention relates to a fuel metering device for regulating the delivery rate of a high-pressure fuel pump of a fuel injection device for an internal combustion engine. The fuel metering device has a control valve actuated by an electromagnet and having a valve member. The electromagnet has an armature and an armature rod and the armature rod is axially movably supported in at least one bushing. The at least one bushing is designed as a solid, one-piece metal component. The bushing is preferably made of steel and the bearing surface thereof, in which the armature rod is supported, has a nitrocarburized and polished surface layer. | 11-18-2010 |
20110023830 | SYSTEM AND METHOD FOR PREVENTING OVERHEATING OF A FUEL PUMP - A fuel injection system supplies fuel at high pressure to an internal combustion engine via at least two high-pressure fuel pumps and a high-pressure fuel distribution line. The high-pressure fuel pumps can operate in a first pump mode and a second pump mode, which differ in the amount of fuel that is pumped. A control unit alternately operates the high-pressure fuel pumps such that, during a first time period, at least one of the high-pressure fuel pumps is operated in the first pump mode and all other high-pressure fuel pumps are simultaneously operated in the second pump mode and such that, during a second time period, at least one of the high-pressure fuel pumps, which was operated in the second pump mode during the first time period, is operated in the first pump mode and the remaining high-pressure fuel pumps are simultaneously operated in the second pump mode. | 02-03-2011 |
20110155102 | DIRECT INJECTION BI-FUEL SYSTEM FOR COMBUSTION ENGINES - A direct injection bi-fuel system includes a first fuel subsystem, a second fuel subsystem, and a junction configured to receive first fuel from the first fuel subsystem when the system is operating in a first fuel consuming mode, and to receive second fuel from the second fuel subsystem when the system is operating in a second fuel consuming mode. A pump is configured to receive the fuel passing through the junction and pump the fuel to a high pressure rail of a combustion engine, and a purging unit is configured to purge the second fuel from the rail when the system is switched from the second fuel consuming mode to the first fuel consuming mode. The purging unit includes a piston and is configured to receive the second fuel on one side of the piston and the first fuel on the other side of the piston. | 06-30-2011 |
20110168132 | APPROACH FOR CONTROLLING FUEL FLOW WITH ALTERNATIVE FUELS - Fuel is evacuated from a fuel rail upon vehicle shut-off by directing fuel from a fuel pump to provide a motive flow for an ejector to pump fuel from the fuel rail to a fuel tank. | 07-14-2011 |
20110197856 | FUEL DELIVERY PIPE WITH DAMPER FUNCTION - A fuel delivery pipe with damper function, being constructed of an elongate lower case provided at its bottom with a plurality of injection sockets for connection with fuel injection valves to be opened and closed by a controller unit; an upper case coupled with the lower case in a liquid-tight manner to form an internal space to be filled with fuel under pressure supplied from a fuel pump; a hollow partition wall member the whole periphery of which is brazed to an inner surface of the lower or upper case to form an air chamber isolated from the internal space; and a vent hole formed in the lower or upper case and sealed after communicating the air chamber with the atmosphere therethrough. | 08-18-2011 |
20110265765 | DIRECT INJECTION PUMP CONTROL STRATEGY FOR NOISE REDUCTION - A pump may have a first chamber and a solenoid coil to control movement of a first valve member. A second chamber may have a second valve member to control fluid moving into a third chamber. A first fluid passageway may link the first and second chambers, a second passageway may link second and third chambers and a third passageway may link third and fourth chambers. After pressurizing the third chamber causing fluid to flow into and leave a fourth chamber, the third chamber depressurizes due to downward movement of a plunger. Upon depressurization with a solenoid coil energized, second valve member floats and then moves against a valve seat. While the second valve member is moving toward the valve seat, the solenoid coil is de-energized causing the first valve member to move and strike the second valve member when the second valve member is moving at maximum velocity. | 11-03-2011 |
20120118268 | HIGH PRESSURE INJECTION SYSTEM HAVING FUEL COOLING FROM LOW PRESSURE REGION - The invention relates to a high pressure injection system having a fuel tank, a connection line between the fuel tank and a high pressure pump for sealing the fuel, wherein the high pressure pump is connected to at least one fuel injection valve via a corresponding connection line. According to the invention, at least a partial volume of the fuel sealed in the high pressure pump is fed back to the fuel tank from said fuel injection valve by leakage in the fuel injection valve via a return line connected to the fuel tank. An essential characteristic of the invention is that the high pressure injection system comprises a cooling line that connects the fuel tank or the low pressure region to the high pressure or a return of the high pressure pump via a mixing point with the return line. It is thereby possible to cool the fuel in the return lines between the fuel injection valve and the fuel tank. | 05-17-2012 |
20120160214 | Injection Valve Comprising a Transmission Unit - An injection valve for injecting fuel into an internal combustion engine may include an actuator and an injection needle associated with a sealing seat. A hydraulic transmission unit may establish an effective connection between the actuator and the injection needle. The transmission unit may include two movable pistons, between which a movable pot is arranged. The movable pot may be guided within another stationary pot. The first piston may be guided through the bottom of the other pot, and the second piston is guided within a sleeve section of the pot. A first chamber may be formed between the other pot and pot, and a second chamber may be formed between pot and the second piston. The two chambers may be interconnected via at least one duct. One piston may be effectively connected to the injection needle, while the other piston may be effectively connected to the actuator. | 06-28-2012 |
20120160215 | APPARATUS FOR ADJUSTING FUEL AMOUNT OF DIESEL ENGINE - An apparatus for adjusting the fuel amount of a diesel engine is capable of preventing a decrease in the accuracy of the adjustment of the fuel amount. An engine stop operation input portion | 06-28-2012 |
20120174893 | FUEL INJECTOR - A fuel injector for use in delivering fuel to an internal combustion engine includes a nozzle having a valve needle which is moveable with respect to a valve needle seating through a range of movement between a fully-closed position and a fully-open position to control fuel delivery through at least one nozzle outlet, whereby movement of the nozzle needle is controlled by fuel pressure within a control chamber. A nozzle control valve controls fuel flow into and out of the control chamber to pressurise and depressurise the control chamber, respectively. The fuel injector also includes a variable flow passage in communication with the control chamber through which fuel flows out of the control chamber at a variable rate throughout the range of movement of the valve needle so that movement of the valve needle is damped to a greater extent as it approaches the fully-open position. | 07-12-2012 |
20120186558 | ELECTRIC-ACTUATED CONTROL VALVE OF A UNIT FUEL INJECTOR - A unit fuel injector ( | 07-26-2012 |
20120192836 | FUEL PREHEAT FOR ENGINE START - Systems and methods for providing heated fuel to a fuel injector of an engine are provided. According to the approaches described herein, adequate cold-start fuel atomization may be provided without compromising driver satisfaction due to excessive pre-ignition delay, while at the same time reducing unnecessary heating of fuel during warm engine off conditions. | 08-02-2012 |
20120204833 | FUEL INJECTION DEVICE - A fuel injection device includes a fuel supply pump, an injector, a filter, a circulation flow passage, an introduction valve, a circulation flow valve and a check valve. The injector supplies fuel discharged from the fuel supply pump to an engine, and the filter is arranged upstream of the fuel supply pump. The circulation flow passage introduces high-pressure fuel into the filter from a high-pressure flow passage provided between the fuel supply pump and the injector by opening of the introduction valve. The circulation flow valve is provided in the circulation flow passage and allows or interrupts inflow of fuel from the circulation flow passage into the filter depending on a fuel temperature. The check valve is provided upstream of the circulation flow valve to prevent backflow, and opens when a fuel pressure in the circulation flow passage is higher than a predetermined pressure. | 08-16-2012 |
20120312278 | HIGH-PRESSURE FUEL SUPPLY PUMP - A high-pressure fuel supply pump which has no probability of discontinuity of a thin film of fuel at a sliding portion even when the fuel is not needed to be compressed to a high pressure is obtained. Two low-pressure fuel ports are provided on the high-pressure fuel supply pump in addition to a high-pressure discharge port to a high-pressure fuel capacity chamber. One of the two low-pressure fuel ports is connected to a low-pressure fuel capacity chamber and remaining one is connected to a low-pressure fuel supply pump. Accordingly, the interior of the high-pressure fuel supply pump is always filled with fresh fuel even in a mode in which a high-pressure fuel injecting valve does not inject fuel and only a low-pressure fuel injection valve injects fuel, so that a temperature rise of a plunger and a cylinder is prevented and locking of the plunger and the cylinder can be prevented. | 12-13-2012 |
20130055988 | COMPONENT OF A FUEL INJECTION SYSTEM AND FUEL INJECTION SYSTEM - A component of a fuel injection system, designed in particular as a fuel distributor or a fuel injector, includes a base body on which at least one electric line is provided. The electric line is applied to the base body by plasma coating. In addition, a fuel injection system, used in particular for motor vehicles, includes a fuel distributor and multiple fuel injectors mounted on the fuel distributor. | 03-07-2013 |
20130061830 | PRESSURE OPERATED MECHANICAL FLOW CONTROL VALVE FOR GASOLINE DIRECT INJECTION PUMP - A flow control valve ( | 03-14-2013 |
20130098334 | Fuel Metering Device for an Internal Combustion Engine - The invention relates to a fuel metering device in particular for a self-igniting air-compressing internal combustion engine, comprising a fuel pump for delivering a fuel, wherein the fuel can be withdrawn from a tank and supplied via a high-pressure pump to an injection system of the internal combustion engine, and wherein excess fuel can be recirculated from the injection system via a recirculating line in the injection system, and wherein the tank is designed as a pressure mixing receptacle having a vapour pressure buffer chamber to receive a first fuel such as diesel fuel, rape-seed oil, soyseed oil, sunflower oil, palm oil or fats and a further fuel such as a liquefied petroleum gas (LPG fuel), and a pressurised fuel mixture formed of the first fuel and the second fuel can be withdrawn from the pressure mixing receptacle serving as a tank via an extraction valve and supplied to the high-pressure pump of the injection system via the fuel pump designed as a booster pump. It is characterised in that the withdrawal of the pressurised fuel mixture via the extraction valve takes place via a wall located in the lower region of the tank, such that a static pressure acts on the extraction valve and the fuel pump designed as a booster pump is disposed down-stream of the extraction valve in the flow direction of the fuel mixture outside of the pressure mixing receptacle, wherein a pressure relief and bypass valve for recirculating the fuel mixture via the recirculating line to the pressure mixing vessel is provided downstream of the fuel pump and upstream of the injection system in the fuel flow direction. | 04-25-2013 |
20130133619 | HYDRO-CARBON INJECTION SUPPLY UNIT - A hydro-carbon injection supply unit includes a fuel filter including a damping head which reduces a high fuel pulsation pressure generated in a cylinder head through an inner circulation path along of the fuel, and an HCI part for receiving the fuel discharged from the fuel filter whose pulsation pressure has been reduced and injecting the fuel to an exhaust manifold at a front end of a catalyst. Accordingly, even if a fuel pulsation pressure exceeding a design value is generated in the cylinder head, the HCI part is not influenced at all. | 05-30-2013 |
20130133620 | HANDHELD WORK APPARATUS AND SUCTION HEAD FOR CONNECTION TO A FUEL LINE IN A HANDHELD WORK APPARATUS - A handheld work apparatus includes a fuel tank ( | 05-30-2013 |
20130146027 | COMBUSTION GENERATING DEVICE OF INTERNAL COMBUSTION ENGINE - Provided is a combustion generating device of an internal combustion engine, which is capable of performing very precise flame control through a simple structure which does not need a prechamber and reducing harmful exhaust gas through low-temperature rapid combustion. The combustion generating device includes: an ignition system generating a spark; and an injector generating a mixture by mixing air and fuel and injecting a flame into a combustion chamber, the flame being generated by applying the spark to the mixture. | 06-13-2013 |
20130174809 | FUEL SUPPLY SYSTEM FOR INTERNAL COMBUSTION ENGINE - A fuel supply system for an internal combustion engine capable of executing calculation of an energization time of the electromagnetic valve at proper timing and thereby properly controlling the amount of fuel to be discharged from the fuel pump toward a fuel injection valve. In the fuel supply system, when a predetermined timing corresponding to a predetermined crank angle position of the engine deviates from a predetermined cam angle timing which is within a predetermined time period including a timing at which a top of a cam nose of the driving cam is abutting a plunger, and preceding and following the timing, and corresponds to a predetermined rotational angle position of the driving cam, the calculation timing of the energization time is corrected such that the calculation timing is made closer to the cam angle timing. | 07-11-2013 |
20130192563 | FUEL SUPPLY PUMP - A fuel supply pump includes a low-pressure pump and a high-pressure pump. The low-pressure pump pumps up fuel from a fuel tank. The high-pressure pump includes a pressurizing chamber to which fuel pumped up by the low-pressure pump is supplied, and pressurizes fuel in the pressurizing chamber. The high-pressure pump further includes a cam shaft, a cam, a plunger, a housing, and a bush. The cam is provided eccentrically to a central axis of the cam shaft and is rotated integrally with the cam shaft. The plunger is driven by the cam to pressurize fuel in the pressurizing chamber. The housing accommodates the cam shaft. The bush is fixed to the housing to bearing-support the cam shaft. The housing includes a cooling passage, through which fuel discharged from the low-pressure pump flows on an outer peripheral side of the bush to serve as a medium for cooling the bush. | 08-01-2013 |
20130213359 | FUEL PUMP WITH QUIET CAM OPERATED SUCTION VALVE - A fuel system including a high pressure fuel pump with a quite fuel metering valve is disclosed. In one example, the quite fuel metering valve may be cam driven. The fuel system may reduce engine noise and may provide operating modes that are different from other fuel systems. | 08-22-2013 |
20130213360 | FUEL PUMP WITH QUIET ROTATING SUCTION VALVE - A fuel system including a high pressure fuel pump with a quite fuel metering valve is disclosed. In one example, the quite fuel metering valve may be driven via a rotating motor. The fuel system may reduce engine noise and may provide improved fuel pressure control. | 08-22-2013 |
20130213361 | FUEL PUMP WITH QUIET VOLUME CONTROL OPERATED SUCTION VALVE - A fuel system including a high pressure fuel pump with a quite fuel metering valve is disclosed. In one example, the quite fuel metering valve may include a fuel volume control plate. The fuel system may reduce engine noise and may provide improved fuel pressure control. | 08-22-2013 |
20130247874 | FUEL SUPPLY APPARATUS FOR INTERNAL COMBUSTION ENGINE - A fuel supply apparatus for an internal combustion engine includes: a feed pump capable of feeding a fuel of the internal combustion engine; a high pressure fuel pump that pressurizes the fuel fed from the feed pump; and a second injector that supplies the pressurized high-pressure fuel to the internal combustion engine selectively. An ECU of the fuel supply apparatus includes: a pulsation width detection unit that detects a pulsation width in a pressure of the fuel fed from the feed pump to the high pressure fuel pump; and a feeding condition determination unit that determines that a condition variation causing fuel vapor to form in the fuel fed to the high pressure fuel pump has occurred when the pulsation width detected by the pulsation width detection unit falls rapidly to a preset threshold variation width. | 09-26-2013 |
20130255636 | SYSTEM AND METHOD FOR CLOSING A TANK VALVE - A method for closing a storage tank valve in response to leaks in a fuel line or fuel rail and emptying the tank of a vehicle when no leaks are detected is described. The method includes comparing a tank pressure to a fuel line or fuel rail pressure in order to detect leaks therein and further includes using a dedicated tank pressure sensor to measure the gaseous pressure of the storage tank, and thereby the amount of fuel remaining. In response to leaks in the fuel system, a controller may close an electronic solenoid valve, which reinforces a mechanical excess flow valve, to block the flow of fuel and prevent fuel loss from the gaseous storage tank. | 10-03-2013 |
20130284150 | FUEL FEED NETWORK FOR A ROTORCRAFT ENGINE, THE NETWORK INCLUDING MEANS FOR PRIMING A PUMP FOR SUCKING FUEL FROM A FEED TANK - A fluid flow network for feeding fuel to at least one engine ( | 10-31-2013 |
20130298872 | FUEL INJECTION CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE - An object of the invention is to provide a technology enabling to determine the saturation vapor pressure of used fuel in a fuel injection control system for an internal combustion engine equipped with a low pressure fuel pump and a high pressure fuel pump. In the invention, to achieve the object, in the fuel injection control system for an internal combustion engine that controls the duty cycle of the high pressure fuel pump by proportional-integral control based on the difference between the discharge pressure of the high pressure fuel pump and a target pressure, generation of vapor is detected based on a tendency of change in an integral term used in the proportional integral control, and the saturation vapor pressure of used fuel is calculated from the fuel temperature and the engine speed at that time. | 11-14-2013 |
20140007844 | PIPE CONNECTOR AND FUEL INJECTION SYSTEM - A pipe connector comprising a connector body, a first fitting connectable to a first double wall pipe, the first fitting comprising a first portion connectable to an inner flow space and a second portion connectable to an outer flow space of the first double wall pipe, a second fitting connectable to a second pipe, a third fitting comprising a first portion and a second portion, which first portion is connectable to the third pipe, and a flow channel arranged in the connector body for interconnecting the first portion of the first fitting, the second fitting and the first portion of the third fitting. The pipe connector comprises a leak channel arranged in flow connection with the second portion of the first fitting, a leakage outlet for discharging fluid from the leak channel, a discharge channel extending from the second portion of the third fitting to the leakage outlet and providing a continuous flow connection therebetween, and a closure member having a first position, in which fluid flow from the leak channel to the leakage outlet is prevented, and a second position, in which fluid flow from the leak channel to the leakage outlet is allowed. The closure member is arranged to move from the first position to the second position when fluid pressure in the leak channel rises above a certain limit. | 01-09-2014 |
20140020657 | Fuel Injector And Fuel-Injection System - A fuel injector may include a central longitudinal axis and may be arranged in a cylinder head of a combustion engine. The fuel injector has an injector body and an adjustment device, the adjustment device including a ring element configured to be arranged in a recess of a cylinder head between the injector body and the cylinder head to align the fuel injector relative to the recess in radial direction. The ring element comprises a magnetic material. A fuel-injection system is also disclosed that includes a cylinder head of an internal combustion engine and a fuel injector as disclosed above. | 01-23-2014 |
20140020658 | DIESEL ENGINE FOR A LPG-DIESEL MIXTURE - A diesel engine for combusting a diesel-LPG mixture includes a fuel system for supplying diesel and LPG. The mixture is obtained by combining the fuel flow from a LPG tank and diesel tank. Increased pressure is applied in both fuel flows for mixing purposes. Immediately following the mixing a circulation system is present in which increase in pressure also takes place, wherein a part of the mixture is supplied to a high-pressure pump for injection to the diesel engine and a part is recirculated. In a method of supplying the diesel-LPG mixture, the part of the mixture that is supplied to the high-pressure pump is returned to a position upstream of the mixing point. The pressure in the fuel system is higher downstream of the mixing point. When the LPG supply is switched off the pressure can be gradually decreased through circulation. | 01-23-2014 |
20140034016 | APPARATUS FOR SPRAY INJECTION OF LIQUID OR GAS - An injection gate ( | 02-06-2014 |
20140041632 | FUEL TANK SYSTEM - A fuel tank system includes an ECU receiving an open signal Sa of a fuel supply SW. The ECU has a main control unit controlling a power unit of a vehicle, a main relay control circuit turning off a main relay when IGSW for causing the power unit to start or stop is turned off, SOAK time measurement circuit measuring an input time and no input time, the input time being a time during which the open signal Sa is continuously inputted to the ECU while the IGSW is off, the no input time being a time during which the open signal Sa is not inputted to the ECU while the IGSW is off with the fuel supply SW on, and a failure determination unit determining that the fuel supply SW has an abnormality when SOAK time is longer than a failure determination time. | 02-13-2014 |
20140069385 | FUEL SYSTEM FOR A MULTI-FUEL ENGINE - Methods and systems are provided for operating an engine fuel system including fuels of different fuel types. A first fuel type is delivered for port injection upon circulation through a high pressure pump when direct injection of a fuel is not requested to cool and/or lubricate the high pressure pump. | 03-13-2014 |
20140102414 | FUEL INJECTION APPARATUS - A liquefied gas fuel is supplied to a fuel gallery of a high-pressure pump through a feed pipe. A fuel injection apparatus includes a passage expansion pipe of which passage area is greater than that of the fuel gallery. The passage expansion pipe is arranged between the feed pipe and the fuel gallery. When the fuel is supplied to the fuel gallery during a suction stroke of a plunger, the passage expansion pipe functions as an accumulator accumulating the fuel therein. The replenishing fuel from the passage expansion pipe is added to the fuel supplied from the feed pump. A pressure drop in the fuel gallery becomes small, so that the pressure pulsation in the fuel gallery is reduced. | 04-17-2014 |
20140109874 | FUEL SYSTEM AND METHOD FOR REDUCING FUEL LEAKAGE FROM A FUEL SYSTEM - A fuel system is provided for supplying pressurised fuel, in particular dimethyl ether (DME) or a blend thereof, to an internal combustion engine. The fuel system includes a fuel pump, which has a pumping mechanism arranged partly in a housing containing lube oil, a drain line connected to the housing and suitable for draining at least fuel vapour from an interior of the housing, a lube oil supply line connected to the housing, a lube oil supply valve installed in the lube oil supply line, a seal installed between the pumping mechanism and the housing for preventing at least lube oil leakage to the outside of the housing, and a drain valve installed in the drain line, wherein both the drain valve and lube oil supply valve are controlled to be closed during an engine non-running state for preventing fuel vapour leakage from the housing. | 04-24-2014 |
20140123947 | LPG DIRECT INJECTION SYSTEM - An LPG direct injection system may include an engine receiving liquefied petroleum gas (LPG) into a combustion chamber thereof, an injector adapted to inject the LPG into the combustion chamber of the engine, a high pressure fuel pump supplying high pressured LPG to the injector, a fuel tank storing the LPG for supplying to the engine, a regulator apparatus receiving the LPG from the fuel tank, controlling pressure of the received LPG, and delivering a controlled LPG to the high pressure fuel pump, a fuel supply line sequentially connecting the fuel tank, the regulator apparatus, the high pressure fuel pump, and the injector so as to supply the LPG stored in the fuel tank to the engine, and a fuel return line returning an LPG that remains in the high pressure fuel pump after pumping thereof to the fuel tank. | 05-08-2014 |
20140174402 | DUAL FUEL SYSTEM HAVING A DAMPER - A dual fuel system for an engine is disclosed. The dual fuel system may have a first fuel supply providing a first fuel to the engine, and a second fuel supply providing a second fuel. The dual fuel system may also have a regulator configured to pass the second fuel from the second fuel supply to the engine, with the regulator also in fluid communication with the first fuel supply. The dual fuel system may further have a damper in fluid communication with the first fuel supply and an output of the regulator. | 06-26-2014 |
20140174403 | FUEL SUPPLIER - A fuel supplier for a motor vehicle, having a fuel tank and an internal combustion engine, includes a fuel pump pumping fuel from the fuel tank to the internal combustion engine, a motor driving the fuel pump, and a control unit carrying out feedback control of duty ratio of voltage applied to the motor such that the actual fuel pressure comes close to a target fuel pressure. The control unit increases a low limit value of the duty ratio in accordance with the change of an accelerator open ratio in an opening direction. | 06-26-2014 |
20140182551 | Gaseous Fuel System, Direct Injection Gas Engine System, and Method - The disclosure describes an engine system having liquid and gaseous fuel systems, each of which injects fuel directly into an engine cylinder. A controller controls pumping of a liquefied natural gas (LNG) in the gaseous fuel system. In a pump cycle, a pumping piston is moved in an intake direction over an intake stroke such that the pumping piston produces a negative pressure that draws LNG from a tank fluidly connected to the pumping element into a pumping chamber of a body of the pumping element. The pumping piston is moved in an opposing power direction over a power stroke such that the pumping piston pumps compressed LNG out of the pumping chamber away from the tank. The pumping piston is moved over the intake stroke with an average intake velocity and over the power stroke with an average power velocity, which is greater than the average intake velocity. | 07-03-2014 |
20140196690 | INTERNAL COMBUSTION ENGINE HAVING A FUEL SUPPLY SYSTEM FOR STOP-AND-GO OPERATION - Embodiments for an internal combustion engine are provided. In one example, and internal combustion engine comprises at least two cylinders each including an injection nozzle and a fuel supply system for supplying the cylinders with fuel. The fuel supply system includes a supply line connecting each injection nozzle to a first fuel reservoir storing fuel at a first pressure, the first fuel reservoir filled by a pump provided upstream, a second fuel reservoir storing fuel at a second pressure less than the first pressure and connected to the first fuel reservoir via a connecting line for filling with fuel, and a bypass line connecting the second fuel reservoir to each injection nozzle. The bypass line opens into the fuel supply system downstream of the first fuel reservoir, thereby forming a connection point, and a shutoff element is arranged in the bypass line, opening or shutting off the bypass line. | 07-17-2014 |
20140216407 | Fuel System Control - A method of controlling a fuel system includes determining the opening of a pressure relief valve and initiating a reseat strategy for the valve. The fuel system comprises a source of high pressure fuel and a pressure relief valve having at least one inlet fluidly coupled to the source of high pressure fuel and at least one outlet. The pressure relief valve has a closed position and at least one open position in which fuel is able to pass from the inlet to the outlet. The method comprises the steps of
| 08-07-2014 |
20140230791 | FUEL INJECTION CONTROL SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - In a fuel injection control system for an internal combustion engine provided with a low pressure fuel pump and a high pressure fuel pump, proportional plus integral control of a high pressure fuel pump is carried out to make a pressure of fuel come close to a target value between the high pressure fuel pump and fuel injection valves. In cases where the high pressure fuel pump is in operation, a feed pressure, which is a pressure of fuel between a low pressure fuel pump and the high pressure fuel pump, is caused to go down when an integral term in the proportional plus integral control does not change or is decreasing, and the feed pressure is caused to go up when the integral term is increasing. In cases where the high pressure fuel pump is in a stopped state, the feed pressure is made higher than before the high pressure fuel pump is stopped. | 08-21-2014 |
20140238351 | Method And Apparatus For Pumping Fuel To A Fuel Injection System - A method and apparatus pump fuel to a fuel injection system in an internal combustion engine. The method comprises steps of pumping a liquid fuel to a first pressure, using the liquid fuel at the first pressure as a hydraulic fluid for driving a gaseous fuel pump, and pumping a gaseous fuel to a second pressure with the gaseous fuel pump. | 08-28-2014 |
20140261327 | FUEL SUPPLY SYSTEM FOR INTERNAL COMBUSTION ENGINE AND METHODS OF USING THE SAME - A number of variations of the invention may include a fuel supply system for an internal combustion engine and/or method, wherein heat is exchanged from gaseous fuel in a gaseous fuel line and at least one of a liquid fuel in a liquid fuel feed line or a liquid fuel return line which are connected to an injection fuel rail of an internal combustion engine. In a number of variations, a regulator or throttling valve is provided in the gaseous fuel line to expand gas flowing therein and reduce the temperature of the gas to further cool the liquid fuel flowing in the liquid fuel feed line or the liquid fuel return line. Another variation may include a method comprising exchanging heat from gaseous fuel in a gaseous fuel line and a liquid fuel in a liquid fuel feed line or a liquid fuel return line which are connected to an injection fuel rail of an internal combustion engine. Another variation may further include throttling the flow through the gaseous fuel line to adiabatically expand the gas flowing and reduce the temperature of the gas to further cool the liquid fuel flowing in the liquid fuel feed line or the liquid fuel return line. | 09-18-2014 |
20140261328 | REGENERATIVE INTENSIFIER AND ASSOCIATED SYSTEMS AND METHODS - Regenerative intensifier systems that can receive fluids from landfills, anaerobic digesters, wastewater treatment plants, animal waste lagoons, swamp gas, decaying permafrost, and oceanic clathrate decomposition interchangeably with natural gas and other available fuels and substances and provide suitably conditioned fuel for operation of an engine, fuel cell, or other industrial and/or chemical processes. Alternatively, gases collected from landfills, waste digesters, bakeries, breweries, ethanol plants, calciners, power plant stacks, electrolyzers, and/or natural gas that may be delivered at relatively low pressures can be converted to high pressure and/or high purity constituents to enable efficient utilization as a transportation fuel and/or industrial feedstock or chemical plant reactant. | 09-18-2014 |
20140261329 | DIAPHRAGM CARBURETOR WITH FUEL METERING COMPENSATION - A fuel and air supply device for an engine includes a carburetor having a fuel metering assembly with a fuel metering diaphragm defining at least part of a reference chamber, a scavenging air assembly including an air passage and an air valve moveable within the passage to alter air flow through the air passage, and a reference passage. The reference passage communicates at one end with the air passage upstream of the air valve and at its other end with the reference chamber to provide a reference air signal through the reference passage to the reference chamber. The reference air signal, in at least some implementations, is taken from a location downstream of an air filter and any other components so it is representative of the air flow at the air valve and accounts for restrictions to air flow caused upstream of the air valve. | 09-18-2014 |
20140305409 | Fuel System - A fuel system comprises a first reservoir for a first fuel in liquid phase that has a first vapor pressure, and a second reservoir for a second fuel in liquid phase that has a second vapor pressure. The second vapor pressure is higher than the first vapor pressure. The fuel system further includes a mixing device for mixing the first fuel in liquid phase with the second fuel in liquid phase, and an injector which is hydraulically connected to the mixing device and is configured so that as, or immediately after, the mixture passes through an outlet opening of the injector, the second fuel changes from the liquid phase to a gaseous phase. | 10-16-2014 |
20140352665 | ENGINE APPARATUS - Upon arranging a separator tank in a V bank formed between a pair of cylinders, an arrangement position thereof is set to be a position unsusceptible to an influence from an exterior. The separator tank in which a fuel pump that stores liquid fuel in an interior thereof and feeds the liquid fuel toward an injector is accommodated is arranged in the V bank formed between the pair of cylinders which is provided in an engine, and arranged immediately below an air cleaner. | 12-04-2014 |
20150090227 | HIGH PRESSURE FUEL PUMP CONTROL FOR IDLE TICK REDUCTION - A method for operating a solenoid valve coupled to the inlet valve of a fuel injection pump comprises adjusting a pull-in electrical energy of the solenoid valve based on a fuel injection pump volumetric efficiency. | 04-02-2015 |
20150345446 | METHOD OF MITIGATING AXIAL LOADS ON PLUNGER OF FUEL PUMPS - A method of mitigating axial loads on a plunger of a fuel pump is disclosed. The fuel pump includes a compression chamber. The compression chamber receives a supply of fuel while the fuel pump is in an operational state and correspondingly facilitates exertion of an axial load on the plunger. The method initiates with receiving a change in voltage of the strain gauge circuit while the fuel pump is in operation. The change in voltage corresponds to the axial load exerted by the compression chamber on the plunger. Thereafter, the axial load on the plunger is determined by use of the change in the voltage of the strain gauge circuit. The axial load on the plunger is compared with a threshold value. If the axial load breaches the threshold value, the supply of fuel to the compression chamber is altered. | 12-03-2015 |
20150361917 | FUEL CONTROL APPARATUS FOR VEHICLE AND FUEL CONTROL METHOD FOR VEHICLE - A fuel control apparatus for a vehicle, having an electric pump configured to have electric power supplied, to supply fuel from a fuel tank to an injector of an internal combustion engine through a fuel pipe, and a control unit configured to have the internal combustion engine stop automatically when a first predetermined condition is satisfied, and after having the internal combustion engine stop automatically, start automatically when a second predetermined condition is satisfied, includes an operation unit configured, when the control unit has the internal combustion engine stop automatically, to supply electric power from a predetermined electric power supply apparatus to the electric pump, to have the electric pump operate. | 12-17-2015 |
20150361926 | INCREASED DIESEL ENGINE EFFICIENCY BY USING NITROUS OXIDE AS A FUEL ADDITIVE - A diesel engine fuel delivery system is equipped for addition of N | 12-17-2015 |
20160108876 | OIL FILTER - An oil filtration system including an oil reservoir and a first conduit assembly having a first end and a second end. The first conduit assembly being in fluid communication with the oil reservoir at the first end, and an HEUI pump at the second end. The first conduit assembly includes a first pump coupled to the first conduit assembly, and disposed downstream of the oil reservoir. The first pump adapted to pump oil from the oil reservoir to the first conduit assembly. A primary filter coupled to the first conduit assembly, and disposed downstream of the first pump. A bypass conduit disposed in parallel configuration with the primary filter, and adapted to provide a bypass path for flow of oil therethrough, thereby preventing flow of oil through the primary filter. A secondary filter coupled downstream to both the first conduit assembly and the bypass conduit, and disposed upstream of HEUI pump. | 04-21-2016 |
20160138489 | HIGH-PRESSURE PUMP AND FUEL INJECTION SYSTEM HAVING A HIGH-PRESSURE PUMP - A high-pressure pump ( | 05-19-2016 |
20160186682 | ZERO FLOW LUBRICATION FOR A HIGH PRESSURE FUEL PUMP - Methods and systems are providing for improving zero flow lubrication (ZFL) of a high pressure fuel pump coupled to direct fuel injectors via a direct injection fuel rail. A ZFL transfer function for the fuel pump is learned while fuel is at non-nominal fuel bulk modulus conditions and corrected for variations from a nominal fuel bulk modulus estimate. When zero flow lubrication of the pump is requested, the pump is operated with a duty cycle based on the learned transfer function and an instantaneous estimate of the fuel bulk modulus to compensate for differences in fuel condition from the nominal fuel bulk modulus estimate. | 06-30-2016 |
20170234283 | METHOD FOR COOLING A DIRECT INJECTION PUMP | 08-17-2017 |
20190145364 | HIGH PRESSURE PUMP | 05-16-2019 |