Class / Patent application number | Description | Number of patent applications / Date published |
123510000 | Fuel flow regulation between the pump and the charge-forming device | 80 |
20080257313 | ENGINE FUEL PUMP CONTROL APPARATUS - An engine control fuel pump apparatus is provided with a low load fuel pump control section, a high load fuel pump control section and a subordinate pump drive section. The low load fuel pump control section controls a main fuel pump for supplying fuel to an engine when an engine operating condition indicates that the engine is operating with a low load. The high load fuel pump control section controls the main fuel pump and a subordinate fuel pump for supplying fuel to the engine when an engine operating condition indicates that the engine is operating with a high load. The subordinate pump drive section drives the subordinate fuel pump for a prescribed period of time when a rotational speed of the engine is equal to or higher than a prescribed rotational speed while the engine is operating in an low load operating region in which the low load fuel pump control section controls the main fuel pump for supplying fuel to the engine. | 10-23-2008 |
20090000600 | INTERNAL COMBUSTION ENGINE FLOW REGULATING VALVE - A flow regulating valve for a diesel engine in which a unitary valve element has three positions for controlling flow from a unit injector fuel injection system in response to valve inlet pressure. The valve has a first position wherein flow is blocked below about 10 psi, a second position between about 10 psi and 20 psi wherein flow is substantially unrestricted, and a third position above about 20 psi wherein flow is restricted to minimize return flow to a fuel supply and minimize fuel cooling requirements. | 01-01-2009 |
20090000601 | VEHICLE FUEL SUPPLY DEVICE - A compact vehicle fuel supply device that reduces noise caused by excess fuel discharge from a pressure regulator in a simple manner is provided. The device includes a fuel tank, a fuel pump provided in the fuel tank to raise the pressure of fuel in the fuel tank, a case that accommodates the fuel pump, the pressure regulator supported by the case to regulate fuel emitted from the fuel pump at a prescribed pressure and discharge excess fuel from an outlet, and a noise silencing cup provided to cover the outlet of the pressure regulator and having a discharge hole used to discharge the excess fuel into the case. | 01-01-2009 |
20090000602 | FUEL CONTROL DEVICE FOR A PLURALITY OF FUEL SOURCES - A fuel mixing device includes a fuel passage adapted to communicate fuel from at least one of a first fuel source or a second fuel source provided at a higher pressure than the first fuel with at least one of a first fuel path or a second fuel path. The device also includes a control valve permitting fuel flow through the second fuel path and out of the device when the first fuel is provided in the fuel passage so that the first fuel flows out of the device through both the first and second fuel paths, and the valve prevents fuel flow through the second fuel path and out of the device when the second fuel is provided in the fuel passage so that the second fuel flows out of the device only through the first fuel path. | 01-01-2009 |
20090044784 | FUEL DAMPER FIXING CLIP - A fuel damper fixing clip includes a clip main body formed from a sheet member having a plurality of flat portions, and formed in a generally square cylindrical shape. The clip main body surrounds portions of the outer peripheries of a cup portion and a fuel damper and deforms in a tightening direction. The clip main body includes two ends overlapped on an outside and an inside surface thereof. Slits are disposed in the plurality of flat portions of the clip main body, and the collar portions of the cup portion and the fuel damper are disposed therein and locked in a diameter-reduced state of the clip main body in which the clip main body is tightened. A receiving hole is formed in one of the ends of the clip main body. A claw portion is disposed on the other end of the clip main body obliquely projecting in a direction opposite to the tightening direction. The claw portion is disposed in the receiving hole in the diameter-reduced state in which the clip main body is tightened, and locks the clip main body in the diameter-reduced state in which the collar portions are fixed. | 02-19-2009 |
20090084361 | DIESEL FUEL INJECTION PRIMING SYSTEM - A fuel injection priming system includes a fuel supply line connected to a fuel supply rail. A plurality of piezoelectric fuel injectors are connected to the fuel supply rail. An injector return fuel line is connected to the fuel injectors and in communication with a fuel supply line via a diverter valve to allow pressure fuel from the high pressure fuel pump return line to pressurize the injector return fuel line to backfill the injectors during a priming operation. A fuel restriction device is in communication with the diverter valve to restrict fuel flow through the injector return line to provide sufficient backfill for the fuel injectors during the priming operation and to allow fuel to pass to the fuel tank from the injector return fuel line during normal operation. | 04-02-2009 |
20100037867 | System for Metering a Fuel Supply - A system for metering fuel to an engine. The system includes a fuel metering valve having a throttled inlet and a throttled outlet. The system also provides regulation of redundant pump supplies of fuel to the engine. The throttling of the inlet to the fuel metering valve is provided by a valve that also functions to selectively couple a second fuel pump to the fuel metering valve. | 02-18-2010 |
20100059025 | Fuel module with orifice upstream from regulator - A fuel module for a vehicle has a module housing in fluid communication with a fuel tank of the vehicle and supporting a fuel pump. A pressure regulator is in the module housing and the regulator receives fuel from the pump. An orifice is disposed in a fluid path between the pump and the intake of the regulator. | 03-11-2010 |
20100101540 | GAS ENGINE REGULATOR - A gas engine regulator includes a decompression chamber defined internally of the regulator and having a gas inlet through which liquefied gas fuel enters and a gas outlet through which the gas fuel exits. The gas inlet is provided at one end side of the decompression chamber while the gas outlet is provided at an opposite end side laterally spaced via a space from the one end side. The regulator also includes a partitioning wall disposed to surround the gas outlet and having a gas passage communicating with the gas outlet, the gas passage having a passage inlet disposed upwardly of the gas inlet. | 04-29-2010 |
20100192924 | Valve for Fuel Devices - A valve for controlling volume flows of fuel supply systems of internal combustion engines has a conduit having an inlet and an outlet defining a flow direction. A bypass opening is provided in the conduit. A sleeve is slidably arranged in the conduit and covers in one position the bypass opening completely. The sleeve has an axial through bore that connects the inlet and the outlet. An elastic element that is arranged in the conduit and exerts onto the sleeve a force that is directed toward the inlet. A counterforce is generated by the flow resistance of the sleeve that counteracts the force of the elastic element. | 08-05-2010 |
20110168137 | FUEL SUPPLY DEVICE AND FUEL SUPPLY METHOD - Mixture ratios of fuel oils, which are arbitrarily combined and mixed to generate an oil mixture, are set to be mixture ratios that satisfy a predetermined viscosity condition. Based on the mixture ratios, a CPU ( | 07-14-2011 |
20120060800 | FUEL MIXTURE CONTROL SYSTEM - A control system operative to establish a coordinated composition of gaseous fuel and distillate fuel specifically adaptable for use in high capacity, off-road, mine haul vehicles and including an electronic control unit structured to modulate a throttle position signal from the vehicle throttle assembly and transmit the modulated throttle position signal to a vehicle engine control assembly. The electronic control unit concurrently generates an auxiliary fuel control signal to a gaseous control unit, dependent at least in part, on the operating modes and operating characteristics of the vehicle. The auxiliary control signal is determinative of a quantity of gaseous fuel to be included in an operative fuel mixture, wherein said modulated throttle position signal and said auxiliary control signal are determinative of the operative fuel mixture on which the vehicle engine operates during predetermined ones of the operating modes of the vehicle engine. | 03-15-2012 |
20120152208 | FUEL METERING DEVICE FOR A FUEL INJECTION SYSTEM - The present invention relates to a fuel metering device for a fuel injection system for internal combustion engines having a plastic housing. According to the invention, the fuel metering device includes a control valve having a valve piston which is actuated by an actuating device. Furthermore, the plastic housing can be produced by spray-coating. | 06-21-2012 |
20130087125 | DEMAND VALVE - A fuel system | 04-11-2013 |
20130255644 | DIESEL FUEL FEED SYSTEM - A diesel fuel feed system comprises a diesel engine ( | 10-03-2013 |
20130340722 | Internal combustion engine with fuel system - An internal combustion engine has a fuel system that has a fuel valve with a housing, wherein in the housing a fuel chamber is formed. A fuel pump pumps fuel from a fuel tank into the fuel chamber. A conveying pump provides forced conveyance of fuel into the fuel system. A feed line is connected to the fuel chamber of the fuel valve. The conveying pump is arranged in the feed line and supplies fuel to the fuel chamber. A relief line is connected to the fuel chamber of the fuel valve and a first valve is arranged in the relief line. | 12-26-2013 |
123511000 | Regulator means adjusts fuel pressure | 25 |
20080251052 | Fuel Conveying Device - Disclosed is a fuel conveying device including a valve housing in which a pressure release valve and a non-return valve are arranged parallel to one another, the pressure release valve having a first inlet, which downstream of a valve seat opens into a valve chamber in which a valve body is movably arranged and which is in fluid connection with a second inlet for the non-return valve via a first outlet. The device improves the control response of the pressure release valve by providing the first outlet at the periphery of the valve chamber and in the axial direction with respect to a valve axis such that when the pressure release valve is open the flow from the valve chamber into the second inlet is a substantially radial flow. | 10-16-2008 |
20080257314 | Method for Operating a Fuel System of an Internal Combustion Engine - In a fuel system for an internal combustion engine, the fuel is pumped by a high-pressure fuel pump into a fuel pressure accumulator, from which it is supplied into at least one combustion chamber via at least one injector. A value is provided for the actual pressure in the fuel pressure accumulator. A pressure regulating device using which the fuel may be extracted from the fuel pressure accumulator is precontrolled using a precontrol signal, which is ascertained taking into account a setpoint pressure in the fuel pressure accumulator. A value for a fuel quantity flowing through the pressure regulating device is taken into account when ascertaining the precontrol signal. | 10-23-2008 |
20090107471 | FUEL SUPPLY APPARATUS - The present invention includes a fuel supply apparatus having a pressure regulator for regulating a pressure of fuel supplied from a fuel pump to a target, such as an internal combustion engine of an automobile. The pressure regulator includes a first pressure chamber, a second pressure chamber and a third pressure chamber each configured to be able to receive a supply of the fuel from the fuel pump. A first diaphragm separates the first pressure chamber and the second pressure chamber from each other. A second diaphragm separates the second pressure chamber and the third pressure chamber from each other. The first pressure chamber has a discharge port that can discharge the fuel supplied into the first pressure chamber. A valve assembly is coupled to the first and second diaphragms, so that the valve assembly can open and close the discharge port of the first pressure chamber in response to the balance of forces applied to the first and second diaphragms by pressures of the fuel within the first, second and third pressure chambers. A controller can control the pressure of the fuel within each of the second and third pressure chambers. | 04-30-2009 |
20090120413 | Fuel delivery module for high fuel pressure for engines - A fuel pump module comprising a fuel pump, a pressure regulator, a supply line check valve, a relief valve, and a flange adapted to engage a fuel supply line that fluidly links the fuel pump module with an injector rail. The pressure regulator is adapted to maintain a predetermined fuel pressure between the fuel pump and the supply line check valve. The supply line check valve is adapted to facilitate a minimum fuel pressure in the fuel supply line. The relief valve is adapted to limit the maximum fuel pressure in the fuel supply line. The supply line check valve, the relief valve, and the flange are integrated to form a single fluidly interconnected structure disposed within a fluid path between the pressure regulator and the fuel supply line. An integrated casing may house the fuel pump and the pressure regulator. | 05-14-2009 |
20090183716 | FUEL SUPPLY DEVICE FOR GAS ENGINE - A fuel supply device for a gas engine is provided that includes a vaporizer ( | 07-23-2009 |
20090194075 | By-pass regulator assembly for dual ERFS/MRFS fuel pump module - A fuel system that supplies fuel to an engine of a vehicle. The fuel system includes a pump that pumps fuel and a controller that selectively changes operation of the pump between an electronic returnless fuel system mode and a mechanical returnless fuel system mode. In the electronic returnless fuel system mode, the outlet of the pump is varied, and in the mechanical returnless fuel system mode, output of the pump is maintained approximately constant. | 08-06-2009 |
20090211559 | ENGINE FUEL SUPPLY CIRCUIT - A fuel supply circuit for a Diesel engine includes fuel injectors, a fuel tank, a main pump for delivering fuel to the injectors, and a variable flow charge pump for delivering fuel from the tank to an inlet of the main pump, and a surplus fuel line communicating unburned fuel from the injectors to an inlet of the charge pump. The circuit also includes a temperature sensor which senses a temperature of fuel discharged by the charge pump, and a pressure sensor which senses a pressure of fuel discharged by the charge pump. A bleed line communicates fuel from an outlet of the charge pump to the tank. A solenoid operated bleed valve and a pressure relief valve control flow through the bleed line. An electronic control unit controls the charge pump and the bleed valve as a function of the sensed parameters. | 08-27-2009 |
20100006072 | FUEL SUPPLY DEVICE FOR INTERNAL COMBUSTION ENGINE AND CONTROL DEVICE FOR THE FUEL SUPPLY DEVICE - A fuel supply device has a main line, a fuel pump, a first return line, a second return line, a valve mechanism, a first pressure regulator, and a second pressure regulator. The fuel pump is arranged in a fuel tank or in the vicinity of the fuel tank, and pressurizes the fuel in the fuel tank and supplies the furl to a fuel distribution pipe via the main line. The first return line returns the fuel from the fuel distribution pipe to the fuel tank. The second return line is branched from the main line in the vicinity of the fuel pump and returns the fuel from the main line to the fuel tank. The valve mechanism selectively connects and disconnects the second return line with respect to the main line. The first pressure regulator is arranged in the first return line. The second pressure regulator is provided in the second return line and adjusts fuel pressure to a lower level than the first pressure regulator does. | 01-14-2010 |
20100037868 | FUEL FEED SYSTEM OF ENGINE - A fuel feed system of an engine is provided with a gas-fuel separating unit for separating oil mist generated in an engine case from air with a labyrinth, and an auto fuel cock is operated by pressure pulsation of the air from which the oil mist is separated by the gas-liquid separating unit. Thus, infiltration of the oil mist into the auto fuel cock is suppressed to the minimum, and a malfunction of the auto fuel cock caused by accumulation of the oil can be prevented. Additionally, a breather passage for feeding the air, from which the oil mist is separated by the gas-liquid separating unit, to a breathing unit is connected the auto fuel cock via a negative pressure tube. Thus, it is unnecessary to provide a specific passage for transmitting the pressure pulsation of the air in the engine case to the auto fuel cock. | 02-18-2010 |
20100139624 | HIGH PRESSURE FUEL PUMP CONTROL FOR IDLE TICK REDUCTION - A method for controlling a mechanical solenoid valve of a high-pressure fuel pump to supply fuel to an engine is provided. The method includes: during an idle condition, adjusting a pull-in current of the mechanical solenoid valve utilized to control closing of the mechanical solenoid valve based on a fuel pressure downstream of the high-pressure fuel pump, wherein the pull-in current is reduced when possible while enabling the mechanical solenoid valve to close as indicated by an increase in the downstream fuel pressure. | 06-10-2010 |
20100212639 | PULSATION REDUCING APPARATUS - At abnormal pressure pulsation generating time, a piston of a pulsation reducing apparatus is displaced in a valve chamber due to an increase in a fuel pressure in an upstream side fuel passage, so that fluid communication between a valve chamber and a downstream side fuel passage is disabled, and fluid communication between a valve chamber side end part of a return passage and the valve chamber is enabled. Pressure pulsation is conducted into the return passage and is reduced by a damping effect of a pulsation reducing mechanism and a flow restricting effect of orifices. The fuel, which has passed through the orifices, is returned to the upstream side fuel passage through the return passage. | 08-26-2010 |
20100242923 | TWO STEP PRESSURE CONTROL OF FUEL PUMP MODULE - A fuel system comprises a fuel line that supplies fuel to an engine at a fuel line pressure. A first fuel pump selectively supplies fuel to the fuel line at a first pressure. A second fuel pump selectively supplies fuel to the fuel line at a second pressure that is greater than the first pressure. A check valve having an inlet in communication with an exit port of the first fuel pump and an outlet in communication with the fuel line is positioned based on the fuel line pressure and the first pressure. | 09-30-2010 |
20100263634 | DUAL LEVEL PRESSURIZATION CONTROL BASED ON FUEL FLOW TO ONE OR MORE GAS TURBINE ENGINE SECONDARY FUEL LOADS - A system and method provide dual level pressurization control of a fuel supply system based on whether fuel is being supplied to one or more secondary fuel loads. Fuel pump discharge backpressure is maintained above either a first minimum pressure value or a lower second minimum pressure value by determining whether fuel is being supplied to one or more secondary fuel loads. The fuel pump discharge pressure is maintained above the first minimum pressure value if it is determined that fuel is being supplied to the one or more secondary loads. The fuel pump discharge backpressure is maintained above the lower second minimum pressure value if it is determined that fuel is not being supplied to the one or more secondary loads. | 10-21-2010 |
20100294250 | METHOD OF OPERATING AN INTERNAL COMBUSTION ENGINE ARRANGEMENT - A method is provided for operating an internal combustion engine arrangement and to an internal combustion engine arrangement, which includes, but is not limited to an internal combustion engine, which can be operated with gaseous fuel, a pressure reducer for reducing the gas pressure of the gaseous fuel, which is fed to the internal combustion engine. The pressure reducer is connected on the high-pressure side in a fluid-conducting manner via a gaseous fuel line to at least one gas tank for storing gaseous fuel, and the pressure reducer is connected on the low-pressure side in a fluid-conducting manner by means of a gaseous fuel line to at least one controllable gas injection valve for regulating the gas flow of the gaseous fuel, which is fed to the internal combustion engine, a controllable high-pressure shutoff valve, which is arranged on the high-pressure side of the pressure reducer and is connected in a fluid-conducting manner to the pressure reducer, for shutting off the gas flow of the gaseous fuel which is fed to the pressure reducer from the gas tank. The high-pressure shutoff valve includes, but is not limited to a pilot valve with a relatively small opening cross-sectional area and a main valve with a relatively large opening cross-sectional area, and an electronic control device which is used at least for controlling the high-pressure shutoff valve and the at least one gas injection valve. In order to assume operation of the internal combustion engine with gaseous fuel, controlled by the electronic control device, the pilot valve of the high-pressure shutoff valve is opened in chronological order before the at least one gas injection valve. | 11-25-2010 |
20100307459 | METHOD AND DEVICE FOR CONTROLLING A FUEL-SUPPLY SYSTEM - In a method for controlling a fuel-supply system, a first supply unit supplies fuel from a storage container to a second supply unit. At least a partial quantity of the fuel quantity supplied by the first supply unit returns to the storage container as return quantity via a return line. The return quantity is determined as a function of the operating state of the fuel-supply system. The first supply unit is controlled at least as a function of the return quantity. | 12-09-2010 |
20100307460 | FUEL SUPPLY APPARATUS OF INTERNAL COMBUSTION ENGINE AND CONTROL DEVICE OF FUEL SUPPLY APPARATUS - A fuel supply apparatus of an internal combustion engine is provided which can discharge air bubbles or air from within fuel supply paths while increasing pressure within a common rail up to a predetermined pressure level before a start of the internal combustion engine, can reduce a period of time of cranking from when an ignition switch is switched on and which can reduce noise that occurs when the air bubbles or air are being discharged. | 12-09-2010 |
20110100335 | FUEL DELIVERY SYSTEM - A method and system for fuel delivery. The method and system may include one or more fuel storage tanks housing propane, one or more regulators through which fuel may flow and one or more fuel metering devices or systems. The flow of fuel from a fuel storage tank to an engine may be such that the engine runs in a clean and efficient manner. | 05-05-2011 |
20120097134 | METHOD FOR CONTROLLING AND REGULATING THE FUEL PRESSURE IN THE COMMON RAIL OF AN INTERNAL COMBUSTION ENGINE - Proposed is a method for controlling and regulating an internal combustion engine ( | 04-26-2012 |
20140182561 | Onboard CNG/CFG Vehicle Refueling and Storage Systems and Methods - Embodiments described herein provide a mobile refueling solution to vehicles that run on natural gas (CNG) or other gaseous fuels (CFG) through an integrated system of onboard compression, storage, interface modules and a central control architecture. | 07-03-2014 |
20140209068 | METHOD FOR PLAUSIBILIZING A RAIL PRESSURE SENSOR VALUE - A method for plausibilizing a rail pressure sensor value of a rail pressure sensor of an internal combustion engine having a common rail system that has a fuel high-pressure piston delivery pump includes acquisition of the beginning of conveying by the piston delivery pump, calculation of the rail pressure from the compression work performed by the piston, and plausibilization of the rail pressure outputted by the rail pressure sensor on the basis of the calculated rail pressure. | 07-31-2014 |
123512000 | Engine parameter responsive | 4 |
20090205616 | DEVICE AND METHOD FOR REGULATING A VOLUMETRIC FLOW OF FUEL IN A LOW-PRESSURE CIRCUIT SYSTEM FOR AN INTERNAL COMBUSTION ENGINE - The invention relates to a device for regulating a fuel volume flow in a low-pressure circuit system for an internal combustion engine with a tail for providing the fuel, from which tank the fuel can be supplied via a feed line to a high-pressure pump by a feed pump. A fuel return line is also provided from the feed line, which fuel return line has a zero-feed throttle for throttling the returned fuel. In series with the zero-feed throttle is an overflow valve which interrupts the return of the fuel in the fuel return line during the starting phase of the internal combustion engine, and enables the return of the fuel during operation of the internal combustion engine. A device and a method for regulating a fuel volume flow in a low-pressure circuit system are therefore created, which device has a simple construction and permits a reliable starting phase at low feed volumes. | 08-20-2009 |
20090260601 | 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. | 10-22-2009 |
20110214644 | Cold-Start Fuel Control System - A fuel control system for controlling the supply of liquefied petroleum gas (LPG) to injectors of a fuel supply system during a cold start is provided. The fuel control system includes a LPG pressure regulator and a cold-start fuel control valve for throttling fuel to the injectors when the pressure of the LPG is below a nominal set point pressure of the pressure regulator. The cold-start fuel control valve may be in parallel or series with a fuel lock-off valve. The system is configured to supply limited discrete amounts of LPG to the injectors when the pressure of the LPG is below the nominal set point pressure to allow the LPG to vaporize prior to being injected, by the injector, into an engine. Operation of the cold-start fuel control valve during non-cold starts and normal operation are also provided. | 09-08-2011 |
20130019843 | FUEL TANK APPARATUS FOR HYBRID VEHICLE - A fuel tank apparatus mounted on a hybrid vehicle being switched between an engine drive mode and an engine stop mode, includes: a fuel supply shut-off unit configured to shut off fuel supply to the engine in the engine stop state; a cup disposed inside a fuel tank body; a fuel pump configured to operate to supply fuel stored in the cup to the fuel supply pipe; and a fuel pump controlling unit configured to operate the fuel pump to perform fuel supply to the engine and to allow fuel to enter the inside of the cup in the engine drive mode, and configured to operate the fuel pump to allow fuel to enter the inside of the cup although fuel supply to the engine is shut off by the fuel supply shut-off unit, in the engine stop mode. | 01-24-2013 |
123513000 | Environmental condition responsive | 1 |
20090301443 | FUEL FEEDING DEVICE FOR GAS ENGINE - An engine fuel feeding device that is small-sized and easy to start. A cutoff valve is disposed upstream from a primary regulator provided to a fuel passage from a fuel feeding source to an engine. The cutoff valve is provided integrally with the primary regulator. When the gas engine is stopped, the fuel feeding passage is blocked in front of the primary regulator, gas fuel does not flow in the downstream direction that includes the primary regulator, and the ability of the gas engine to start is enhanced. | 12-10-2009 |
123514000 | Excess fuel returned to tank | 17 |
20080202478 | Pressure Control Valve for a Hydraulic Device, and Use of Said Pressure Control Valve - Disclosed is a pressure control valve ( | 08-28-2008 |
20080236550 | Vehicle fuel supply device - A vehicle fuel supply device including a saddle-shaped fuel tank comprised of a main chamber and an auxiliary chamber. A reservoir is disposed within the main chamber. A main pump is provided within the reservoir. A sub-pump is detachably provided within the reservoir. The fuel in the reservoir is drawn up by an operation of the main pump to supply fuel to an engine. A portion of the drawn-up fuel is utilized to generate a negative pressure, the negative pressure is utilized to transfer the fuel in the auxiliary chamber to the reservoir, and the negative pressure is utilized to introduce the fuel in the main chamber into the reservoir. | 10-02-2008 |
20080245346 | FUEL SUPPLY APPARATUS - A fuel supply apparatus particularly for the outboard motor is capable of decreasing the need to change the layout, etc., according to the specification of an engine to reduce the cost of production by preventing vapor from being discharged into an intake pipe. A low pressure fuel pump has its discharge flow rate adjusted to be greater than that of a high pressure fuel pump, and surplus fuel accumulating in a volumetric chamber is caused to circulate through the volumetric chamber, a first return passage, fuel piping, and an inflow passage under the action of the low pressure fuel pump, a check valve and a relief valve, whereby fuel remaining in the volumetric chamber is prevented from being locally warmed. | 10-09-2008 |
20090013972 | SYSTEM AND METHOD FOR PRIMING A FLUID SYSTEM - A system and method is provided for automatically priming a fuel system by bleeding/purging air or vapor therefrom. The system includes a bleed valve configured to automatically move between three positions in response to the pressure of the fuel in the system. When fuel pressure is in a first pressure range, the bleed valve automatically moves to a first-closed position for preventing fuel from draining to the fuel tank and thereby drawing air into the fuel system. When the fuel pressure moves to a second, higher pressure range, the bleed valve automatically moves to an open position for bleeding air out of the fuel system and into the tank, thereby priming the fuel system. When the fuel pressure moves to a third, still higher pressure range, the bleed valve automatically moves to a second-closed position so as to not interfere with the regulation of the pressure regulating valve. | 01-15-2009 |
20090078237 | FUEL SUPPLY SYSTEM FOR INTERNAL COMBUSTION ENGINE - A high-pressure return passage returns excess fuel in a delivery pipe that is connected to an injector to a fuel tank. An upstream end of the high-pressure return passage is connected to the delivery pipe via a high-pressure regulator. A vertically lower portion of the high-pressure return passage is vertically below the upstream end and the downstream end. A low-pressure return passage returns excess fuel in a main passage to the fuel tank. The switch valve switches the open state and the closed state of the low-pressure return passage. A control section controls the switch valve to the closed state after the engine is stopped and drives the fuel pump so as to execute a forced return process that flows fuel into the high-pressure return passage. | 03-26-2009 |
20090151705 | FUEL SYSTEM FOR LIQUEFIED PETROLEUM INJECTION ENGINE - A fuel system for an LPI engine according to an exemplary embodiment of the present invention may include a reservoir disposed in a fuel tank, a recovery pipe inserted in the reservoir, and a fuel pump disposed in the reservoir and supplying LPI fuel, wherein liquefied fuel mixed with gaseous fuel recovered through the recovery pipe is separated in the reservoir and the liquefied fuel is pumped again by the fuel pump. | 06-18-2009 |
20090308357 | AUTOMATIC RESIDUAL FUEL VENT DEVICE FOR CARBURETOR - An automatic residual fuel vent device for a carburetor, the device including a fuel supply passage ( | 12-17-2009 |
20100024780 | FUEL DELIVERY SYSTEM FOR MULTI-FUEL ENGINE - A fuel delivery system for an internal combustion engine and a method of operating the fuel delivery system are provided. An example embodiment of the method includes: transferring at least some fuel from a first fuel storage region to a second fuel storage region via a pump during a first condition; draining at least some fuel from the second fuel storage region to the first storage fuel region via gravity during a second condition; and delivering fuel from the first fuel storage region to a first fuel injector of a cylinder of the internal combustion engine; and delivering fuel from the second fuel storage region to a second fuel injector of the cylinder. | 02-04-2010 |
20100065023 | Anti-Clogging Fuel Pump Module - A by-pass fuel system in which the plumbing of the fuel pump module is configured to ensure by-pass strained (and filtered) fuel remains separate from the reservoir fuel after by-pass such that it is not re-strained before re-entry to the fuel pump. The anti-clogging fuel pump module is plumbed such that the by-pass strained fuel is directed to the fuel pump separately with respect to the reservoir fuel, wherein it never mixes with reservoir fuel except after the reservoir fuel has passed through the strainer. Thus, the by-pass strained fuel only mixes with strained fuel from the strainer before its entry to the fuel pump. Accordingly, only reservoir fuel in the fuel pump module is passed through the strainer, whereby the clogging rate of the strainer is minimized. | 03-18-2010 |
20100186724 | ENGINE ASSEMBLY WITH FUEL FILTER GAS REMOVAL APPARATUS - An engine assembly may include an engine defining a cylinder bore, a fuel tank, a fuel supply assembly in fluid communication with the fuel tank and the cylinder bore, a fuel return assembly in fluid communication with the fuel supply assembly and the fuel tank, and a fuel filter assembly. The fuel filter assembly may include a filter casing having an inlet, an outlet and a bypass opening, and a filter media located within the filter casing. The filter media may be located between the inlet and the outlet, defining a dirty fuel region of the filter assembly between the inlet and the filter media and a clean fuel region between the filter media and the filter outlet. The bypass opening may be in fluid communication with the dirty fuel region and the fuel return assembly to draw gases out of the dirty fuel region. | 07-29-2010 |
20100224170 | FUEL SUPPLY SYSTEM FOR INTERNAL COMBUSTION ENGINE - A high-pressure return passage returns excess fuel in a delivery pipe that is connected to an injector to a fuel tank. An upstream end of the high-pressure return passage is connected to the delivery pipe via a high-pressure regulator. A vertically lower portion of the high-pressure return passage is vertically below the upstream end and the downstream end. A low-pressure return passage returns excess fuel in a main passage to the fuel tank. The switch valve switches the open state and the closed state of the low-pressure return passage. A control section controls the switch valve to the closed state after the engine is stopped and drives the fuel pump so as to execute a forced return process that flows fuel into the high-pressure return passage. | 09-09-2010 |
20110186018 | HIGH-PRESSURE PUMP - A high-pressure pump has a metering valve and a valve stopper. The stopper has a regulation portion which an end surface of the valve is brought into contact with. An outer diameter of the regulation portion is equal to an outer diameter of the outer peripheral surface of the valve. A cylindrical sleeve is disposed around the regulation portion. When the end surface of the valve is in contact with the regulation portion, the sleeve covers a tapered surface of the valve. | 08-04-2011 |
20130233285 | FILTER DEVICE - A filter device has a sub-tank to be provided in a fuel tank. The sub-tank has an outer tubular portion and a bottom wall. A communication hole is formed in the bottom wall. An upper-side filter element is fixed to an upper side of the bottom wall to form an upper-side filter space between them, while a lower-side filter element is fixed to a lower side of the bottom wall to form a lower-side filter space between them. An inlet port of a fuel pump is connected to the upper-side filter element. Apart of fuel can be reserved in a fuel holding portion of the inside of the sub-tank and/or in the upper-side filter space, even when fuel amount in the fuel tank is decreased and the fuel tank is inclined with respect to a horizontal line. | 09-12-2013 |
20130340723 | FUEL SYSTEM FOR A VEHICLE - A fuel system having a fuel module for use within a fuel tank of a vehicle is disclosed herein. The fuel module includes a fuel reservoir having an inlet for receiving fuel from the fuel tank, a pump for pumping fuel from the reservoir through a fuel supply line and a temperature sensitive valve having a first port for receiving fuel from a return line, a second port for outputting the received fuel into the fuel reservoir, and a third port for outputting the received fuel into the fuel tank and external to the fuel reservoir. | 12-26-2013 |
20140174410 | FUEL FILTER - Embodiments may provide a fuel filter that may include a plurality of return fuel conduits axially traversing a filter medium. Each conduit may include an inlet in fluidic communication with the fuel recirculation passage. Each conduit may have a return fuel line exit port adjacent to a distal end of the filter medium. | 06-26-2014 |
20160138536 | DIESEL FUEL RECIRCULATION DEVICE - A diesel fuel recirculation device may include a fuel tank configured to store and supply diesel fuel, a main filter connected to the fuel tank and filter diesel fuel to supply the filtered diesel fuel to an engine, and a recirculation member provided in the main filter and be resupplied with high temperature fuel from the engine to supply the resupplied high temperature fuel to the fuel tank or the main filter, such that marketability and usage convenience may be improved by increasing a temperature of the fuel using the high temperature fuel resupplied from the engine to shorten a starting time under low temperature conditions. | 05-19-2016 |
20160186706 | SYSTEMS AND METHODS FOR FUEL STATE CONTROL WITH FUEL RECIRCULATION AND PREHEAT - A method of recirculating high temperature fuel used as a coolant and lubricant in the engine to a fuel state control system is provided. The method may decrease the need for a heater component in the fuel state control system. The combination of the fuel recirculation and the use of a fuel state control system may increase the engine efficiency and decrease the emission of pollutants. | 06-30-2016 |
123515000 | Regulator controls flow of a plurality of fuels | 4 |
20100288240 | Method of and apparatus for co-fuelling diesel engines - Apparatus for co-fuelling a diesel engine including a diesel engine having one or more combustion chambers; a co-fuel tank for containing a liquid co-fuel, the co-fuel tank being in fluid connection with the one or more combustion chambers; co-fuel delivery and delivery control means operatively interposed between the co-fuel tank and the one or more combustion chambers for delivering co-fuel from the co-fuel tank to the one or more combustion chambers; a liquid to gas converter operatively interposed between the co-fuel tank and the one or more combustions chambers for converting the liquid co-fuel from a liquid to a gas; a condensate return for returning any of the co-fuel which recondenses to the co-fuel tank and engine control means operatively associated with the diesel engine and the co-fuel delivery and delivery control means for controlling operation of the diesel engine and the delivery of the co-fuel to the one or more combustion chambers. | 11-18-2010 |
20120291758 | FUEL SWITCHOVER CONTROL DEVICE AND METHOD - Provided is a fuel switchover control device for an internal combustion engine which can use multiple types of fuel. The fuel switchover control device includes controller which, when first fuel is being used, performs different types of fuel switchover control when the pressure of the first fuel exceeds an upper limit threshold value and when the pressure of the first fuel falls below a lower limit threshold value. | 11-22-2012 |
20120318241 | FUEL INJECTION APPARATUS FOR INTERNAL COMBUSTION ENGINE - The fuel injection apparatus for the internal combustion engine includes: a fuel injector having a leading end portion that has an internal space in which fuel is accumulated and an injection port for injecting fuel; and an adsorbent disposed in the internal space, the adsorbent being capable of selectively adsorbing an alcohol component in a blended fuel of gasoline and alcohol. In this fuel injection apparatus, it is determined whether or not a fuel pressure is higher than a predetermined low fuel pressure when a request is issued for bringing an internal combustion engine to a stop. If it is determined that the fuel pressure is higher than the low fuel pressure, the fuel pressure is kept at the low fuel pressure for a predetermined period of time before the internal combustion engine is brought to a stop. | 12-20-2012 |
20130160745 | FUEL SUPPLY SYSTEM AND A VEHICLE - A raw fuel tank | 06-27-2013 |
123516000 | Air or fuel vapor purging system | 15 |
20080302339 | Fuel Supply Device for a Motor Vehicle - The invention relates to a fuel supply device ( | 12-11-2008 |
20090007889 | Three position fuel line check valve for relief of diurnal pressure - Prior art fuel line check valves remain closed after engine off and cool down. Diurnal heating and the resultant pressure increase in the fuel line causes fuel vapor emissions through small openings in the fuel line (e.g., at the injector tips). The invention provides a check valve for a vehicle fuel line which opens in response to engine cooling and remains open while the engine is off to relieve subsequent increasing pressure in the fuel line due to diurnal heating thereof. | 01-08-2009 |
20090071448 | VAPOR SEPARATOR - A vapor separator includes a fuel pump, and a container at least partially defining a fuel reservoir to hold fuel and a pump chamber to hold the fuel pump. A closure is carried by the container to close the fuel reservoir and at least partially defines a vapor chamber above a level of fuel in the fuel reservoir and in fluid communication with the pump chamber. A vapor vent device is carried by the closure to allow fuel vapor to vent out of the vapor separator from the vapor chamber and prevent liquid fuel from flowing therethrough when the vapor separator is declined. | 03-19-2009 |
20100031931 | MARINE VESSEL PROPULSION DEVICE - A marine vessel propulsion device includes an engine, a fuel injection device, an intake system, a vapor separator tank arranged to separate fuel vapor from liquid fuel to be supplied to the engine, a pump unit arranged to transport the fuel from the vapor separator tank to the fuel injection device, a fuel pipe arranged to connect the fuel injection device and the pump unit, a vapor pathway arranged to connect the vapor separator tank and the intake system, a valve disposed in the vapor pathway, and an engine control unit. The engine control unit is arranged to control the opening degree of the valve in accordance with a valve opening speed set based on at least the pressure of the fuel in the fuel pipe when starting the engine. | 02-11-2010 |
20100154754 | Systems and methods for filtering fuel - A manifold for a fuel filter assembly includes a first base, which may define a first inlet passage to direct flow to a first filter element, and a first outlet passage to direct flow from the first filter element to a second base. The manifold includes a second base, which may define a second inlet passage to receive flow from the first base and direct the flow to the second filter element, and a second outlet passage to receive the flow from the second filter element. The manifold includes a diverting module, which may provide flow communication between the first outlet passage and second inlet passage, such that flow in the first inlet passage passes through the first filter element before entering the second inlet passage. The first and second inlet passages may define a common longitudinal axis. The first and second outlet passages may define a common longitudinal axis. | 06-24-2010 |
20100212640 | SYSTEMS AND METHODS FOR PURGING AIR OF A FUEL INJECTION SYSTEM - A system for a vehicle includes an initialization module and a purge control module. The initialization module generates an initialization signal based on a crankshaft speed signal and/or a fuel rail pressure signal. The initialization module also generates the initialization signal based on an initial purge value and an assembly-line monitoring value. The purge control module generates a purge signal to purge air from a fuel injection system of an engine. The purge signal is generated when the crankshaft speed signal indicates that a crankshaft of the engine is stationary and/or the fuel rail pressure signal indicates that a fuel rail pressure is less than a predetermined value. The purge signal is also generated based on the initialization signal. | 08-26-2010 |
20100212641 | ENGINE FUEL SUPPLY SYSTEM - An engine fuel supply system is provided at a reduced cost by using a HC dosing pump that supplies fuel into an exhaust pipe also as a pump for a cylinder fuel supply device. When a signal is generated to command air removal from a cylinder fuel supply passage, the dual-purpose pump is activated, a first on-off valve assumes an open state, and a second on-off valve assumes a close state, so that the fuel is supplied from the dual-purpose pump to the cylinder fuel supply passage via an air-removal fuel supply passage. When a signal is generated to command fuel supply into the exhaust pipe, the dual-purpose pump is activated, the second on-off valve assumes the open state, and the first on-off valve assumes the close state, so that the fuel is supplied from the dual-purpose pump to the exhaust pipe via the exhaust-pipe fuel supply passage. | 08-26-2010 |
20100218748 | Device for the Venting Circuit of a Liquid Tank and Valve Incorporating Said Device - A device for a venting circuit of a liquid tank provided with a canister and a filling tube including a filling head, this device comprising: | 09-02-2010 |
20110168138 | VAPOR SEPARATOR WITH INTEGRAL LOW PRESSURE LIFT PUMP - A system for supplying fuel under pressure to an internal combustion engine, and to control fuel delivery to a fuel injection system in an internal combustion engine having a low pressure pump formed integrally as at least part of a main housing of a vapor separator assembly. The low pressure pump lifts fuel into a cavity of a reservoir, which is drawn from a high pressure pump into the internal combustion engine. Due to the integrated nature of the low pressure pump, leak paths and assembly costs are reduced. | 07-14-2011 |
20120180765 | DIESEL FUEL SYSTEM WITH ADVANCED PRIMING - This invention relates to an aerating device for a fuel system, and in particular, to an aerating device for a fuel system supplying fuel to an engine from a fuel tank. The invention includes, for example, a solenoid valve accessing a flow path to the fuel tank, and a control unit opening a closing the solenoid valve, such that opening of the solenoid valve permits fuel and air to flow back through the flow path to the fuel tank and naturally separate. | 07-19-2012 |
20120186562 | FUEL LEVEL SENSOR FOR MARINE FUEL VAPOR SEPARATOR EXTERNAL TO UNIT - A fuel vapor separator assembly including a housing having an open interior and a float disposed therein. At least one magnet is disposed on the float, and a sensor assembly which is responsive to magnetic fields is disposed externally of the housing. The sensor assembly senses the position of the float to determine whether vapor is present in the fuel vapor separator. If the sensor assembly determines that vapor is present in the fuel vapor separator, then it generates a signal, which a controller receives and activates a vapor vent valve to discharge the vapor and/or activates a fuel lift pump to pump additional fuel into the fuel vapor separator. The sensor assembly could be, for example, a Hall effect sensor or a reed-type sensor. | 07-26-2012 |
20130133628 | LOW ACTUATING FORCE CANISTER PURGE VALVE - A canister purge valve for an internal-combustion engine is provided with a housing including a supply channel that connects a fuel-vapor inlet port to a fuel-vapor outlet port. A valve scat is disposed across the supply channel. A valve shutter has a pressure-compensating channel and is movably mounted within the supply channel to move from an “open” position, in which the valve shutter is distant from the valve seat, to a “closed” position, in which the valve shutter is pressed against the valve seat. A rigid stem is mechanically coupled to the valve shutter to move the valve shutter from the “open” position to the “closed” position and seals the; pressure-compensating channel in the “closed” position. | 05-30-2013 |
20130291838 | Diesel bleeder - An apparatus for bleeding diesel fuel powered engines and method for using same. One embodiment of the apparatus comprises a canister for containing pressurized fuel and having a means for attaching to and engaging with a fuel system. The apparatus may be connected to the inlet side of an engine's fuel filter and, when engaged, will push the fuel into the fuel system and air out of the system without having to separately bleed each injector within the engine. | 11-07-2013 |
20140165971 | FUEL-AIR SEPARATOR AND PULSE DAMPENER - A fuel-air separator includes a chamber with an interior side-wall surface and adjacent interior top and bottom surfaces. An inlet of the fuel-air separator opens to the interior side-wall surface to admit fuel and air and to cause the fuel and air to flow helically down and along the interior side-wall surface. A diptube opens to the bottom surface and extends along an axis of the interior side-wall surface to a fuel outlet, while the separated air is released to the atmosphere. | 06-19-2014 |
20160003203 | ENGINE STARTING SYSTEM WITH PURGE PUMP - A starting system for an internal combustion engine that includes: a pump device in communication with a purging and priming circuit of a carburetor; a driven member coupled to the pump device; and a drive member rotatably carried by a recoil starter pulley of an engine. The drive member may positively drive the driven member in two directions, and the driving of the driven member may actuate the pump device. | 01-07-2016 |
123517000 | Carburetor float bowl drain | 3 |
20080276911 | CONTROLLING EVAPORATIVE EMISSIONS IN A FUEL SYSTEM - Methods and fuel systems to reduce evaporative emissions of a volatile fuel. A fuel tank contains fuel, a carburetor mixes air with the fuel from the fuel tank, and a plurality of fluid paths route fuel amongst and/or between the fuel tank and the carburetor. A valve actuation device stops flow of fuel in one or more of the plurality of fluid paths and the carburetor is adapted to be drained of fuel during engine shutdown to reduce or prevent evaporative emissions from the fuel system. The carburetor is preferably designed so as to minimize a volume of fuel contained therein. | 11-13-2008 |
20090145408 | CARBURETOR LIMITER CAP DEVICE - An adjustment limiting device for a carburetor including a fuel adjustment valve rotatable to adjust a supply of fuel in or delivered from the carburetor includes an adjustment limiting cap and a connector. The adjustment limiting cap is adapted to be disposed over a portion of the fuel adjustment valve and includes a rotary connection feature adapted to limit relative rotational movement between the adjustment limiting cap and the fuel adjustment valve, and a rotation limiter to limit rotational movement of the adjustment limiting cap. The connector may be carried by the adjustment limiting cap to maintain the adjustment limiting cap on the fuel adjustment valve. The connector may be concealed by the carburetor body, permit the adjustment limiting cap to be fitted onto the fuel adjustment valve, and prevent the adjustment limiting cap from being removed from the fuel adjustment limiting valve. | 06-11-2009 |
20130206114 | VACUUM CARBURETOR FUEL DRAIN SYSTEMS AND METHODS - Systems and methods for draining fuel from a carburetor of a combustion engine can include a first control valve in communication between a fuel source and a fuel chamber of a carburetor and a second control valve in communication between the fuel chamber of the carburetor and a drain reservoir. The first and second control valves can be coupled and operable such that, upon disengagement of the engine, the first control valve can be closed to block a supply of fuel to the fuel chamber, and the second control valve can be opened to connect the drain reservoir to the fuel chamber, which can operate to draw liquid fuel from the fuel chamber into the drain reservoir. The fuel can then be moved from the drain reservoir into a fuel storage tank, where it can be stored until needed by the carburetor. | 08-15-2013 |