Class / Patent application number | Description | Number of patent applications / Date published |
123480000 | Having microprocessor | 38 |
20090038589 | Fuel injector and method for controlling fuel injectors - A fuel injector for an internal combustion engine, the fuel injector comprising an injector body, a fuel supply passage defined in the injector body, the fuel supply passage containing fuel under high pressure in use of the injector, a pressure sensor for measuring the pressure of fuel in the passage in use, wherein the pressure sensor is situated within the injector body and is separated from fuel in the passage in use, and a method of fuel injection, comprising constructing an hydraulic behaviour profile by fuel pressure measurement, using the hydraulic behaviour profile to predict fuel pressure that will prevail in a fuel injector during an injection event, and supplying a control signal to the fuel injector to control the amount of fuel injected during the injection event in accordance with the predicted fuel pressure. By predicting the fuel pressure that will prevail during an injection event, the fuel delivered during the injection event can be accurately controlled. | 02-12-2009 |
20090056677 | FUEL INJECTION DEVICE, FUEL INJECTION SYSTEM, AND METHOD FOR DETERMINING MALFUNCTION OF THE SAME - A fuel injection device includes a fuel injection valve for injecting fuel, which is distributed from a pressure-accumulation vessel. A pressure sensor is located in a fuel passage, which extends from the pressure-accumulation vessel to a nozzle hole of the fuel injection valve. The pressure sensor is located closer to the nozzle hole than the pressure-accumulation vessel and configured to detect pressure of fuel. The fuel injection device further includes a storage unit for storing individual difference information, which indicates an injection characteristic of the fuel injection valve. The injection characteristic is obtained by an examination. The individual difference information indicates a relationship between an injection state when the fuel injection valve performs fuel injection and a fluctuation in detected pressure of the pressure sensor. The fluctuation is attributed to the fuel injection. | 03-05-2009 |
20090056678 | FUEL INJECTION DEVICE, FUEL INJECTION SYSTEM, AND METHOD FOR DETERMINING MALFUNCTION OF THE SAME - A fuel injection device includes a fuel injection valve for injecting fuel, which is distributed from a pressure-accumulation vessel. A pressure sensor is located in a fuel passage, which extends from the pressure-accumulation vessel to a nozzle hole. The pressure sensor is located closer to the nozzle hole than the pressure-accumulation vessel. A storage unit stores individual difference information obtained by an examination. The individual difference information indicates an injection characteristic of the fuel injection valve and indicates at least one of an injection response time delay between an injection start point and a time point, at which a fluctuation is caused by the start of fuel injection in detected pressure of the pressure sensor, and a parameter for calculating the injection response time delay. | 03-05-2009 |
20090078236 | System and Method for Controlling the Fuel Injection Event in an Internal Combustion Engine - A controller, in electrical communication with the one or more of the injectors and a high-pressure fuel pump, generates a first signal responsive to which the valve in the injector opens or closes and a second signal responsive to which the high-pressure fuel pump increases or decreases the pressure level in the fuel accumulator. The system may also include one or more sensors for detecting a temperature of air in an air manifold, a pressure within the air manifold and a barometric pressure. The controller is programmed to estimate an in-cylinder gas density using data received from the sensors. The controller accesses a database having data representative of one or predetermined in-cylinder gas densities that are associated with one or more predetermined fuel injection parameters. The controller then generates one or more commands indicative of the fuel injection parameters that are associated with a predetermined in-cylinder gas density. | 03-26-2009 |
20090101114 | Internal Combustion Engine Having Common Power Source For Ion Current Sensing and Fuel Injectors - A system and method for controlling operation of a multiple cylinder internal combustion engine having fuel injectors and an ionization current sensor include a high-voltage power supply connectable to, and supplying substantially the same nominal boosted voltage relative to nominal battery voltage to, the fuel injectors and ionization sensor during at least a portion of the engine operation. | 04-23-2009 |
20090126691 | Super Cooled Air And Fuel Induction System For Internal Combustion Engines - The instant invention provides an apparatus and system for cooling the air charge of an internal combustion engine. More specifically, the instant invention provides an air-induction system suitable to provide cooled air charges to turbocharged, supercharged or naturally aspirated internal combustion engines to increase power output while reducing engine emissions. The system utilizes gaseous fuel stored as a liquid wherein the liquefied gaseous fuel is vaporized and warmed at least partially with heat removed from the intake air charge supplied to the engine from the turbocharger or supercharger. In a preferred embodiment, the compressed intake combustion air is first cooled in an aftercooler against an ambiently cooled coolant and is subsequently cooled further by the chiller of the instant invention which utilizes the change in phase, between liquid and gas, of the alternative fuel to cool the incoming air charge. The fuel, in the gaseous phase, is then supplied to the engine in a controlled manner for combustion by the engine. The operation of this system is measured and controlled by a control box mounted in the engine compartment. | 05-21-2009 |
20100288238 | METHOD AND DEVICE FOR FORMING AN ELECTRIC CONTROL SIGNAL FOR AN INJECTION IMPULSE - In a method or a device for forming an electric control signal for an injection impulse of a position-controlled fuel injector, particularly of a common-rail or pump-nozzle injection system, he course of the electric control signal can be selected freely in regard to the pulse edges (injection rate changes Q), the holding period (Δt) and the injection rate (Q). This offers the advantage that the combustion process can be better optimized with respect to low emissions, low consumption and for meeting tightened legal regulations. | 11-18-2010 |
20100294247 | Method for ascertaining an error in a fuel metering unit of an injection system - A method for ascertaining an error in a fuel metering unit of an injection system for an internal combustion engine, wherein the gradients of a first signal representing a physical variable and of a second signal representing a physical variable are determined, and at a predefined magnitude and/or direction of the two gradients an error is recognized. | 11-25-2010 |
20110023835 | Internal Combustion Engine Controller - In an internal combustion engine controller, a clock trouble determination signal from a clock trouble determining circuit that diagnoses any clock input trouble is transmitted in parallel with an abnormality diagnosis signal outputted from an abnormality diagnosing circuit and causes it to be inputted to a trouble/abnormality signal output circuit, and the trouble/abnormality signal output circuit achieves logical summing to output one line of resultant trouble/abnormality output OR signals to a microprocessor (MP). The MP outputs to the trouble/abnormality signal output circuit a trouble/abnormality confirmation input signal, and makes definite any of an abnormal state, a clock trouble state and a normal state based on the result of switching control of the status level of the pertinent trouble/abnormality output OR signal. | 02-03-2011 |
20110220067 | Fuel Injection System for Internal-Combustion Engine and Method of Controlling Fuel Injection System for Internal-Combustion Engine - Disclosed is a fuel injection system that is used with an internal-combustion engine to reliably perform a requested fuel injection operation a requested number of times even when a boost voltage is lowered. The fuel injection system monitors the boost voltage immediately before the start of fuel injection, and varies a valve open time in accordance with the monitored boost voltage. Even when the boost voltage is lowered, the fuel injection system performs a fuel injection operation the requested number of times. | 09-15-2011 |
20110315124 | METHOD FOR REGULATING A QUANTITY CONTROL SOLENOID VALVE IN AN INTERNAL COMBUSTION ENGINE - A method for regulating a fuel injection system of an internal combustion engine, wherein the fuel injection system includes a high-pressure pump which is associated with a quantity control valve having a solenoid valve electromagnetically operable by a coil for supplying fuel, the quantity control valve regulating the fuel quantity pumped by the high pressure pump and the coil of the solenoid valve being energized according to a setpoint current value in order to close the valve for supplying fuel to the high-pressure pump; when the solenoid valve closes, the setpoint current value is reduced from a first current setpoint value to a second current setpoint value so that an emission of audible noise generated when the solenoid valve closes during operation of the internal combustion engine is at least partially reduced. | 12-29-2011 |
20120192837 | FUEL INJECTION CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE - A fuel injection control for an internal combustion engine includes a coil, a first switch, a capacitor, a second switch, and a control circuit. The coil is to boost a voltage of a power supply source. The first switch is connected at one end to an output side of the coil and at the other end to a ground. The capacitor is connected to an electromagnetic fuel injection valve to store energy which has been stored in the coil. The second switch is connected at one end between the coil and the first switch and at the other end to an input side of the capacitor. The control circuit is connected to the first switch and the second switch. The control circuit is configured to perform synchronous rectifying control for switching the first switch and the second switch. | 08-02-2012 |
20120255524 | Method for calibrating an injection quantity - A method for calibrating an injection quantity of an injection system, using which fuel is to be injected into at least one combustion chamber of an internal combustion engine of a device, in which data of at least one zero point quantity calibration, which is carried out in an idling operation of the mechanical device, and data of at least one zero point quantity calibration, which is carried out in an overrun condition of the device, are combined. | 10-11-2012 |
20120279477 | FUEL INJECTOR COMMUNICATION SYSTEM - An injector for a fuel injection system comprising: input means for receiving drive signals from an injector drive circuit for controlling operation of the injector, and an ID chip wherein the injector further comprises an electronic latch means arranged to move between a first state in which the electronic latch means is arranged to be enabled such that the ID chip is in communication with the injector drive circuit via the input means, and a second state in which the electronic latch means is arranged to be disabled such that the ID chip is not in communication with the injector drive circuit via the input means wherein the electronic latch means is arranged to move from the first state to the second state upon receipt at the injector of a drive pulse signal from the injector drive circuit. | 11-08-2012 |
20120291757 | METHOD AND CONTROL UNIT FOR OPERATING A VALVE - A method for operating a valve, in particular a fuel injector of an internal combustion engine of a motor vehicle, in which an auxiliary variable is obtained as a function of at least one electrical operating variable of an electromagnetic actuator driving a component of the valve, in particular a valve needle, and in which the auxiliary variable is checked for the presence of a predefinable characteristic. A reference variable which characterizes the operating behavior of the electromagnetic actuator is ascertained, the auxiliary variable is modified as a function of the reference variable to obtain a modified auxiliary variable, and the modified auxiliary variable is checked for the presence of the predefinable characteristic. | 11-22-2012 |
20120304969 | METHOD AND SYSTEM FOR POWERING AN OTTO CYCLE ENGINE USING GASOLINE AND COMPRESSED NATURAL GAS - Described are methods and systems for powering an Otto-cycle engine using gasoline and compressed natural gas (CNG). The Otto-cycle engine can be powered by determining a quantity of the gasoline and a quantity of the CNG to deliver to a cylinder of the engine during an engine cycle such that combustion within the cylinder occurs at a pre-determined air-fuel ratio; delivering the quantity of the gasoline to the cylinder via a gasoline injector and delivering the quantity of the CNG to the cylinder via a CNG injector such that the gasoline and the CNG combust during the same combustion event; and combusting the gasoline and the CNG within the cylinder. Delivering CNG and gasoline to the cylinder using separate injectors allows the quantities of CNG and gasoline to vary in response to engine operating conditions, which allows the fuel mixture to be adjusted to satisfy engine power and emissions criteria. | 12-06-2012 |
20120318240 | ARRANGEMENT STRUCTURE FOR DRIVE CIRCUIT - A shortest distance (d) between a drive circuit ( | 12-20-2012 |
20130152902 | Method for Adapting the Injection Characteristic of an Injection Valve - A method for adapting the injection characteristic of a fuel injection valve of an internal combustion engine to production-related tolerances is described. In the method, an injection quantity correction value is determined from the deviation of the idle travel and the deviation of the injection quantity of the injection valve before the operating phase of the injector. This injection quantity correction value is used to determine the injection-specific deviation of the injection quantity during the operating phase at the start of the operating phase of the injector in conjunction with the current deviation of the idle travel which is determined in the system. The injector-specific deviation of the injection quantity which is determined is used to correct the injection characteristic. As a result, changes in the injection quantity of an injector can be detected and corrected particularly precisely on the basis of production tolerances. | 06-20-2013 |
20130186373 | MITIGATION OF FUEL PRESSURE SPIKES IN A FUEL INJECTOR HAVING INDEPENDENTLY CONTROLLED PRESSURE INTENSIFICATION AND INJECTION - A pressure intensifier ( | 07-25-2013 |
20130319377 | ENGINE CONTROL UNIT USING SPEED DENSITY CONVERSION - The present invention utilizes a speed density method for determining the cylinder air mass using volumetric efficiency (VE) based on engine speed and manifold pressure. The VE data contain the cylinder filling efficiency for various engine speed and manifold pressure values. The manifold pressure is then measured by a manifold absolution pressure (MAP) sensor. Using the speed density has the advantage that it is much less affected by pulsation in the intake system of the vehicle, and does not require a linear air flow past a sensor in the engine intake system. | 12-05-2013 |
20130333671 | Highly Accurate Continuous-Flow Vaporized Fuel Supply for Large Dynamic Power Ranges - Methods and systems for accurate and precise fuel supply control for continuous-flow of gaseous fuel to an internal combustion engine over a large dynamic power range, including a dual-stage valve that allows optimal control—a first stage in the form of a voice-coil driven electronic pressure regulator, and a second stage in the form of a voice-coil-driven choked-flow valve; monitoring the pressure of the fuel intermediate the two stages and making appropriate adjustments to the first stage via a pressure actuator loop; feeding the gaseous fuel mixture through a unitary block assembly into the second stage; monitoring the pressure of the air/fuel mixture and making appropriate adjustments to the second stage via a valve actuator control loop. | 12-19-2013 |
20140020661 | FUEL INJECTION CONTROLLER - A fuel injection controller includes a transistor downstream of a coil of a fuel injector, two transistors applying a source voltage to an upstream of the coil, a diode refluxing an electric current to the coil from a ground, and a Zener diode provided to promptly consume the counter electromotive force generated in the coil when one of the transistors is turned OFF and the transistor is turned OFF, after an injector-drive-period of the fuel injector is terminated. When a microcomputer measures an injector current “I” decreasing from a time of the termination of an injector-drive-period, a drive control circuit delays an OFF time of the transistor relative to a time of a termination of an injector-drive-period, whereby the injector current “I” decreases gradually. | 01-23-2014 |
20140150751 | FUEL INJECTOR CONTROL SYSTEM AND COMPONENT FOR PIECEWISE INJECTOR SIGNAL GENERATION - A system and component for generating a drive signal suitable to operate a fuel injector. The drive signal includes one or more injector pulses. Each injector pulse is characterized by a desired pulse profile. The system includes an injector driver and a controller. The injector driver is operable to apply a supply voltage to the fuel injector. The controller is configured to store a plurality of state definitions that determine an operation state of the injector driver when a selected definition of the plurality of state definitions is communicated to the injector driver. The controller is further configured to receive a sequence of state values that determine an order that the state definitions are communicated to the injector driver to generate piecewise an injector pulse exhibiting the pulse profile, and thereby generate the drive signal. | 06-05-2014 |
20140158092 | FUEL INJECTION CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE - A fuel injection control apparatus for fuel injection at optimum timing in correspondence with level of gas flow velocity in an intake port upon intake stroke injection. A fuel injection valve is controlled so as to set a large majority (more than half) of an injection period to inject fuel during an intake stroke in respective cylinders within a period where intake port gas pressure is increased. Upon intake stroke injection, the fuel is injected at optimum timing in correspondence with the direction and the level of gas flow velocity in the intake port. Accordingly, the status of air-fuel mixture in a combustion chamber is excellent. It is possible to improve fuel consumption and to reduce exhaust emission. | 06-12-2014 |
20140196691 | Method And Device For Controlling A Valve - A valve includes a spring having a spring force, an actuator having an actuator force that acts against the spring force, and a tappet that can be actuated by means of the actuator. The valve also includes a sealing element, which is or can be coupled to the tappet, and a sealing seat, such that the valve is closed when the sealing element lies against the sealing seat. A current having a specified curve, proceeding from an initial value of the current to a specified final value of the current, is applied during a specified time interval of the actuator after a closing phase of the valve for a normally open valve or after an opening phase for a normally closed valve. The initial value of the current is less than the final value. | 07-17-2014 |
20140366848 | INTERNAL COMBUSTION ENGINE CONTROL SYSTEM - The internal combustion engine control system includes an injector | 12-18-2014 |
20150027415 | METHOD FOR CONTROLLING PRESSURE IN A HIGH-PRESSURE REGION OF AN INTERNAL COMBUSTION ENGINE - A method for controlling pressure in a high-pressure region of an internal combustion engine includes adjusting a fuel outflow from the high-pressure region into a low-pressure region by means of an injector, which has a control valve adjusted by a piezo actuator and a control chamber. The method includes charging the piezo actuator by a first signal such that the control valve is moved from a closed position to a partially open position and fuel flows out from the high-pressure region into the low-pressure region, discharging the piezo actuator by a second signal such that the control valve is moved into the closed position, and partially discharging the piezo actuator by a third signal after the first signal and before the second signal. The method provides pressure control in the high-pressure region via an injector with high reliability even at high rail pressure. | 01-29-2015 |
20150090230 | DETERMINATION OF THE QUANTITY OF AIR FLOWING THROUGH A FUEL INJECTOR BASED ON THE HEATING OF THE FUEL BY MEANS OF AN ELECTRIC HEATING DEVICE - A method for determining the quantity of fuel flowing through a fuel injector. The fuel injector has an electric heating device for heating the fuel and a temperature-measuring device for measuring the temperature of the heated fuel. The method includes (a) applying a predetermined electrical heating power to the electric heating device, (b) measuring an increase in the temperature of the fuel as a consequence of the heating power, and (c) determining the quantity of fuel flowing through the fuel injector on the basis of the applied electrical heating power and the measured increase in the temperature. A method for equalizing the fuel feed at at least two cylinders of an internal combustion engine utilizes the method for determining the quantity of fuel flowing through a fuel injector. An engine controller and a computer program carry out the specified methods. | 04-02-2015 |
20150101575 | Method and Computer Program for Actuating a Fuel Injector - A method actuates a fuel injector having a coil drive with a solenoid and a magnet armature. The magnet armature can be moved along a longitudinal axis by a magnetic field generated by the solenoid. In the method, an amplification voltage is applied to the solenoid at a predefined point in time to move the magnet armature from a closed position into an open position. The amplification voltage is made available by a voltage-regulated direct voltage transformer from a supply voltage. The direct voltage transformer has a storage capacitor for supporting the voltage made available at the output of the direct voltage transformer. The storage capacitor is charged to a pilot control voltage by the amplification voltage before the given point in time, with the result that the voltage present at the solenoid is higher than the amplification voltage at the predefined point in time. | 04-16-2015 |
20150128912 | VEHICLE ENGINE CONTROL SYSTEM - A calculation control circuit unit | 05-14-2015 |
20150354479 | IMPROVING ENGINE PERFORMANCE BY ADJUSTING ANGULAR POSITION SENSOR SIGNAL TIMING - Adjusting an angular position sensor signal of an engine operatively coupled to an engine controller, by, at the engine controller: Receiving signal characterization information having been determined based on an angular position sensor signal sample via a communications network from a remote computer system. Generating a time-adjusted angular position sensor signal based on the angular position sensor signal and the signal characterization information. Also, remotely characterizing an angular position sensor signal of an engine operatively coupled to an engine controller, by, at a remote computer system: Receiving an angular position sensor signal sample from the engine controller via a communications network. Determining signal characterization information enabling generation of an adjusted angular position sensor signal having an adjustment in time with respect to the angular position sensor signal based on the angular position sensor signal sample. Sending the signal characterization information to the engine controller via the communications network. | 12-10-2015 |
20150369159 | METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE - A method and an arrangement for operating an internal combustion engine. In the method, an injection start is calculated by a filter, starting from a standard injection start and at least one of the filter parameters is selected in accordance with the operating mode of the internal combustion engine. | 12-24-2015 |
20150369161 | FUEL INJECTION SYSTEM FOR INTERNAL COMBUSTION ENGINE - This fuel injection system includes a port injector, an in-cylinder injector, and a control device. The control device sets the number of executions of maximum partial lift injection per injection stroke based on the pressure of a fuel supplied to the in-cylinder injector and within a range of the number of injections in which an injection amount of the maximum partial lift injection per injection stroke becomes equal to or less than a target amount. This control device allows the in-cylinder injector to execute the number of executions of the maximum partial lift injection and allows the port injector to inject the fuel by the amount equal to the shortfall compared to the total injection amount only in the maximum partial lift injection by the in-cylinder injector. | 12-24-2015 |
20160017837 | SYSTEM AND METHOD OF INJECTOR CONTROL FOR MULTIPULSE FUEL INJECTION - A system, apparatus, and method are disclosed for controlling a fuel injector using multipulse fuel injection. According to at least one aspect of the present disclosure, the system includes a fuel sequence controller configured for use with a fuel injector having an injector configuration modeled by a body pressure characteristic that includes a rail pressure and an injection rate shape, where the fuel sequence controller is structured to determine an estimate of the injected fuel quantity delivered from the fuel injector at the determined body pressure characteristic. | 01-21-2016 |
20160076478 | FUEL INJECTION CONTROL SYSTEM FOR A SINGLE-CYLINDER DIESEL ENGINE AND CONTROL METHOD THEREFOR - Disclosed is a fuel injection control system for a single-cylinder diesel engine, comprising: a set of operating condition sensors including an accelerator pedal position sensor and a cooling water temperature sensor, an input signal interface capable of receiving an input signal from the operating condition sensors, a control unit connected to the input signal interface, and a rotational speed sensor provided at a camshaft or starting shaft of the single-cylinder diesel engine. The rational speed sensor is connected to the control unit via a rotational speed correction circuit. The control system can easily and quickly determine the rotational speed and operating stroke of the single-cylinder diesel engine, so as to quickly determine the fuel injection quantity and injection timing of the single-cylinder diesel engine in real time. | 03-17-2016 |
20160146145 | METHOD AND CONTROL DEVICE FOR CORRECTING THE START OF INJECTION OF INJECTORS OF AN INTERNAL COMBUSTION ENGINE - A method for correcting the start of injection of injectors of an internal combustion engine, including the following steps: determining a target start of current application depending on at least one parameter of the internal combustion engine; detecting a pressure in an individual accumulator of an injector and determining a measured start of injection on the basis of the pressure; determining a target injection delay depending on at least one parameter of the internal combustion engine; calculating an actual injection delay from the target start of current application and the measured start of injection; comparing the target injection delay and the actual injection delay; and calculating a start-of-current-application correction variable on the basis of the comparison and correcting the target start of current application by the start-of-current-application correction variable. | 05-26-2016 |
20160252037 | FUEL INJECTION CONTROL SYSTEM OF INTERNAL COMBUSTION ENGINE | 09-01-2016 |
20160377013 | FUEL INJECTION CONTROL APPARATUS - A fuel injection control apparatus for an internal combustion engine having cylinders each of which includes a fuel injection valve and an intake valve, includes an intake valve controller, a parameter acquiring device, and an injection quantity correcting device. The intake valve controller performs an effective-compression-ratio reducing operation. The parameter acquiring device acquires a correction parameter including at least one of a rotational speed of the internal combustion engine, the valve closing timing of the intake valve, and an intake parameter indicating an intake fresh air amount flowing into the cylinders through an intake system. The injection quantity correcting device corrects a fuel injection quantity for the fuel injection valve in accordance with the acquired correction parameter to suppress variations among air/fuel ratios of air fuel mixtures in the cylinders while the intake valve controller performs the effective-compression-ratio reducing operation. | 12-29-2016 |