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Actuator circuit (e.g., engine condition responsive electronic circuit actuates injector valve)

Subclass of:

123 - Internal-combustion engines

123434000 - CHARGE FORMING DEVICE (E.G., POLLUTION CONTROL)

123445000 - Fuel injection system

123472000 - Electrically actuated injector

Patent class list (only not empty are listed)

Deeper subclasses:

Class / Patent application numberDescriptionNumber of patent applications / Date published
123490000 Injector solenoid drive 30
123480000 Having microprocessor 19
123494000 Having specific transducer 16
123491000 Starting condition responsive 15
123481000 Engine cylinder cutout 8
123479000 Backup systems, fail-safe, failure indicator 4
20090308355Fuel injection control method and fuel injection control apparatus - An electronic control unit corresponding to a fuel injection control apparatus measures an interval time in ignition signals input by wirings, detects an erroneous connection of wiring by comparing a combination of the measured interval times with a combination of interval times in the case that the wiring is in a correct connection in the same engine stroke, which is previously stored, corrects a setting in such a manner as to output the fuel injection signal to the same cylinder at the same timing as the case that the wiring is in the correct connection, by detecting the erroneous connection and stores the setting, and thereafter outputs a fuel ignition signal on the basis of the corrected setting.12-17-2009
20100024777Method for the localization of a fault location within a fuel injection system - In a method for localizing a fault location within a fuel injection system, when a critical fault is detected by the diagnostic function, a pulse or a series of pulses to the injectors is triggered by a control unit. By observing the voltage value and/or charge value at the injector, it is possible to localize the fault location within the fuel injection system.02-04-2010
20090133671DRIVE CIRCUIT FOR AN INJECTOR ARRANGEMENT AND A DIAGNOSTIC METHOD - The invention relates to a drive circuit for an injector arrangement comprising a first fuel injector in parallel with a capacitive component. The drive circuit comprises: a selector means and diagnostic means. The selector means is operable to select the first fuel injector and/or the capacitive component into the drive circuit and to deselect the first fuel injector and/or the capacitive component from the drive circuit. When the capacitive component is selected and the first fuel injector is deselected, the diagnostic means is operable to sense a current through the first fuel injector. When the sensed current is at variance from a first threshold current the diagnostic means is operable to provide a first signal on detection of a stack terminal short circuit fault associated with the first fuel injector. The capacitive component may be a second fuel injector.05-28-2009
20080202475Device for Charging and Discharging at Least One Piezoactuator for an Injection Valve of an Internal Combustion Engine - A device for controlling at least one piezoactuator for an injection valve of an internal combustion engine, including a microcontroller that controls an output stage which generates the load current for charging and discharging the piezoactuator. The microcontroller controls the output stage through an integrated circuit. A discharge circuit interacts with the integrated circuit to reliably discharge the piezoactuator in case of a failure of the output stage and/or of a safety path of the microcontroller. The load current during the discharge is controlled by a control circuit having a controller which is part of the integrated circuit. The discharge circuit has emergency discharge elements that are activated in case of a failure of the controller or of the integrated circuit.08-28-2008
123488000 Subcircuit operates on a parameter sensor output before input to main fuel control (e.g., function generator) 4
20110239992Engine Control System For An Aircraft Diesel Engine - In an engine control system for an aircraft diesel engine for a propeller aircraft for controlling the injection valves, charge pressure valves, common rail pressure valves and propeller control valves actuated by non-redundant actuators, comprising a plurality of sensors and a regulating device connected thereto and to the actuators, two engine control units—first and second—which are each connected to a first and a second power supply and are each connected to the sensors, are provided and are interconnected by way of a serial bus and can be connected selectively to the actuators by way of relays that are supplied with power together with the first engine control unit. The two engine control units each have a diagnostic function for calculating the respective health levels (A and B), which are determined by the defects detected, can be exchanged by way of the serial bus and are compared to one another. If the health level (A) of the first engine control unit is below the health level (B) of the second engine control unit, the power supply to the relay is interrupted, so that the second engine control unit is automatically connected to the actuators by way of the relays that have released, and consequently a redundant engine control system for an aircraft diesel engine is created. The core of the invention is the automatically switchable connection of the two engine control units communicating with one another via relays depending on the calculated health level.10-06-2011
20080245341SYSTEM AND METHOD FOR CONTROLLING LOCOMOTIVE SMOKE EMISSIONS AND NOISE DURING A TRANSIENT OPERATION - A system and/or method of controlling smoke or noise emanating from a diesel engine wherein a throttle is drivingly coupled to the diesel engine, and wherein an operator of the engine changes a throttle position. The system may comprise a high pressure fuel pump in fluid communication with a fuel reservoir, a fuel accumulator, in fluid communication with the high pressure fuel pump, one or more injectors that are in fluid communication with the fuel accumulator and each of the fuel injectors. A main controller transmits a signal in response to a change in the throttle position. A fuel injection controller, in electrical communication with the main controller, in response to one or more signals relative to a transient operation, transmits one or more signals relative to fuel injection parameters of a fuel injection made during the transient operation.10-09-2008
20110180046METHOD FOR OPERATING A FUEL INJECTOR - A method is for operating a fuel injector, in particular of an internal combustion engine of a motor vehicle, the fuel injector including a piezoelectric actuator for driving a valve needle, which is connected, preferably hydraulically, to the actuator, and the control voltage of the piezoelectric actuator being analyzed to infer an operating state of the fuel injector. According to this method, the second time derivative of the control voltage and/or a variable depending on the second time derivative of the control voltage is/are analyzed.07-28-2011
20110209688Method Of Fluid Injection - The present invention relates to a method of operating an internal combustion engine. With reference to FIGS. (09-01-2011
123486000 Having a digital memory addressed by an engine parameter 4
20110126807Method for operating a fuel injection system of a motor vehicle in particular - A method for operating a fuel injection system of a motor vehicle in particular is described. The fuel injection system has a fuel accumulator, capable of receiving fuel via a metering unit. In the method, an actual pressure in the fuel accumulator is affected by an I regulator, among other things. A precontrol value is generated by a precontrol characteristic map, which is used for compensating manufacturing-related differences in the components of the fuel injection system.06-02-2011
20110017176ABNORMALITY DIAGNOSING SYSTEM FOR INTERNAL COMBUSTION ENGINE - An abnormality diagnosing system for an internal combustion engine including a first fuel injection valve that injects fuel into a cylinder, and a second fuel injection valve that injects fuel into an intake passage is provided which has a control device controls an injection pattern of the first fuel injection valve and the second fuel injection valve. The control device stores engine operating conditions when an abnormality occurs in the engine, and make a return-to-normal determination as to whether the engine returns to a normal operating state when similar operation conditions that are the same as or within predetermined ranges of the stored operating conditions are established. The injection pattern is selected from patterns in which the fuel is injected solely from the first fuel injection valve, solely from the second fuel injection valve, and from both of the first and second fuel injection valves. The control device stores the injection pattern when the abnormality occurs, and makes a return-to-normal determination on condition that the engine is operating in an injection pattern that is the same as the stored injection pattern.01-27-2011
20110132332FUEL ADAPTATION FOR IC ENGINE - A method for controlling an automotive internal combustion engine (06-09-2011
20110303194SYSTEM AND METHOD OF IMPROVING EFFICIENCY OF COMBUSTION ENGINES - A system for improving the performance of a combustion engine comprising a system control unit is disclosed. The system control unit comprises an input module, a transform module and a control module all interconnected to each other. The input module obtains a first set of combustion parameters of the engine through at least one sensor. The transform module transforms the first set of combustion parameters into a second set of combustion parameters. The control module controls fuel injection of the engine based on the second set of combustion parameters, and controls oxyhydrogen production and injection based on the second set of combustion parameters. The controlled fuel injection and the controlled oxyhydrogen production and injection contribute to an improved performance of said engine during combustion. A method of improving the performance of a combustion engine and a method of injecting oxyhydrogen into a combustion engine are also disclosed.12-15-2011
123493000 Deceleration condition responsive 3
20110192380CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE - An internal combustion engine is provided with a fuel injector which injects fuel into an intake port and exhaust variable valve timing mechanism which changes a valve timing of an exhaust valve. A control device executes early exhaust valve closing control which advances a closing timing of an exhaust valve when conditions for executing early exhaust valve closing control stand. The control device includes a torque detecting means which detects an output torque output by an engine body. At the time of deceleration of the engine, even when the condition for executing early exhaust valve closing control stands, execution of early exhaust valve closing control is prohibited when it is predicted that the output torque will become smaller than the limit torque. Thus, due to execution of the early exhaust valve closing control, a large torque fluctuation is prevented from occurring at the time of deceleration of the engine.08-11-2011
20110120422UNIVERSAL ENERGY-SAVING SYSTEM FOR MULTIPLE WORKING CONDITIONS - A universal energy-saving system for multiple working conditions includes an electronic control unit and an actuator. The electronic control unit is adapted to sample, process running, information of a vehicle and an instruction of a driver, control on and off of a fuel injector, and adapted to drive the actuator to lock or release an exhaust valve after opening the exhaust valve, so as to realize working under multiple working conditions. A, normal working condition, the performance of the original vehicle does not change; B, racing and gliding with reduced pressure, no fuel is used and there is no emission; C, working with reduced cylinders when waiting red light and cruising, non-working cylinders race with reduced pressure and no fuel. The features include: fuel of the engine is cut off when gliding, the exhaust valve is constantly half open, the engine races with reduced pressure; the inlet valve opens and closes normally, an inlet manifold is vacuum, direction and braking are not affected. When needing to do work or brake, the engine switches to the normal working condition automatically. Even if a fuel saving system fails, only the fuel saving function is lost, whereas other functions are normal. It is favorable for the engine to work at a best performance field. The engine may work discontinuously. It is possible to save fuel and reduce emission by 15-40%. The structure is simple and practicable. It is easy to be combined with existing techniques and is applicable for modification of old vehicles and equipment of new vehicles.05-26-2011
20100139623INTERNAL COMBUSTION ENGINE OUTPUT CONTROL METHOD AND SYSTEM - It is an object to improve starting performance in an engine rotational speed region that exceeds an idle rotation region without affecting normal traveling performance.06-10-2010
123492000 Acceleration or full load condition responsive 2
20100101537Method Of Fuel Injection - A method of operating an internal combustion engine. With reference to FIG. 04-29-2010
20100313854FUEL INJECTION CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE - In a common rail internal combustion engine having a pressure increase mechanism, when the pressure increase mechanism is activated, fuel is injected according to a target injection quantity determined by adding an increase in injection quantity calculated depending on a load on a supply pump to a demanded injection quantity.12-16-2010
Entries
DocumentTitleDate
20110180044METHOD AND DEVICE FOR CORRECTING A TEMPERATURE-DEPENDENT LENGTH CHANGE OF AN ACTUATOR UNIT DISPOSED IN THE HOUSING OF A FUEL INJECTOR - A method and a device correct a temperature-dependent length change of an actuator unit (07-28-2011
20110180041GENSET ENGINE USING AN ELECTRONIC FUEL INJECTION SYSTEM INTEGRATING AN ALCOHOL SENSOR - An open or closed loop EFI system integrating an alcohol sensor is provided on a genset engine. The EFI system provides acceptable engine performance and efficiency when using fuels or fuel blends over a wide band and when starting from a cold state, i.e., starting the engine after the engine has not run for a relatively long period of time. The alcohol sensor enables acceptable operation while the genset engine is cold. The alcohol sensor sends data to the electronic control unit (ECU) and this data, as well as data provided by other sensors that may be available such as an air flow sensor, is used to determine the optimal air-to-fuel ratio (AFR). The ECU actuates the fuel injector which sends the correct amount of atomized fuel to mix with the air flow to be combusted. The fuel mixture, at the requested AFR, enables the engine to start and operate efficiently from a cold state even if the fuel blend has been changed from a previous operation of the engine.07-28-2011
20130074809DEVICE AND METHOD FOR CONTROLLING START OF COMPRESSION SELF-IGNITION ENGINE - A start control device includes a compression self-ignition engine, fuel injection valve, piston stop position detector, starter motor, and controller for stopping the engine when an automatic stop condition is satisfied, and thereafter, when a restart condition is satisfied and a compression-stroke-in-stop cylinder piston stop position is within a stop position range on a bottom dead center side, restarting the engine by injecting fuel into the compression-stroke-in-stop cylinder while applying torque to the engine. In restarting the engine, when the restart condition is not based on driver request, when the compression-stroke-in-stop cylinder piston stop position is within the stop position range, the controller restarts the engine, injecting fuel into an intake-stroke-in-stop cylinder on an intake stroke, when the cylinder reaches the compression stroke. When the restart condition is based on driver request, the controller restarts the engine, injecting fuel into the compression-stroke-in-stop cylinder.03-28-2013
20080202473METHOD AND APPARATUS FOR RAPIDLY THAWING FROZEN NOX REDUCTANT - According to one aspect of the present invention, a liquid reductant tank for supplying liquid reductant to a selective catalytic reduction system is disclosed. The tank includes a tank cavity for holding a liquid reductant and being at least partially defined by one or more side walls; a liquid reductant supply line at least partially situated within the tank cavity and for communicating liquid reductant from the tank cavity to outside of the tank cavity; and a heating element situated at least partially within the liquid reductant supply line and for thawing frozen reductant situated within the supply line during cold start conditions to obtain liquid reductant for use in a selective catalytic reduction system.08-28-2008
20120180763MULTIPLE FUEL INJECTION SYSTEMS AND METHODS - A desired pulse width module determines a desired length of a single pulse of fuel for a combustion cycle of a cylinder of an engine. A multiple pulses module determines a number of pulses (N) for the combustion cycle, wherein N is an integer greater than 1. A fraction determination module determines N fractional values for the N pulses, respectively. An injector control module generates individual lengths for the N pulses based on the N fractional values, respectively, and based on the desired length. A fuel actuator module opens a fuel injector that injects fuel into the cylinder during the combustion cycle in N pulses having the individual lengths, respectively.07-19-2012
20090056676FUEL INJECTION DEVICE AND FUEL INJECTION SYSTEM - 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, and configured to detect pressure of the fuel. The pressure sensor is located closer to the nozzle hole than the pressure-accumulation vessel. A storage unit stores individual difference information, which indicates an injection characteristic of the fuel injection valve, the injection characteristic being obtained by an examination. The individual difference information is related to a fluctuation pattern of a portion of the fluctuation in detected pressure waveform of the pressure sensor. The fluctuation is attributed to one fuel injection through the nozzle hole. The portion of the fluctuation is subsequent to an end of the fuel injection.03-05-2009
20090056675System and Method to Compensate for Variable Fuel Injector Characterization in a Direct Injection System - A method for controlling fuel injection timing of at least one fuel injector in a direct injection fuel delivery system of an internal combustion engine during a mode of engine operation where a plurality of fuel injection events are performed by the at least one fuel injector during a cylinder event is provide. The method includes, during a first fuel injector needle bounce condition following the end of injection of a first fuel injection event, sending a start of injection signal for a second fuel injection event at a first time, and during a second fuel injector needle bounce condition following the end of injection of the first fuel injection that differs from the first fuel injector needle bounce condition, sending the start of injection signal for the second fuel injection event at a second time that is earlier than the first time.03-05-2009
20110308499METHOD AND DEVICE FOR OPERATING AN INTERNAL COMBUSTION ENGINE - Each cylinder bank of the internal combustion engine is assigned in each case one injection event memory (EES), an injection determining process (EEP) and an injection execution process (EAP). In the respective injection determining process (EEP), desired injection events (EE) are determined for the associated cylinder bank. These injection events are stored in succession in the respectively associated injection event memory (EES). In the respective injection execution process (EAP), injection events (EE) are retrieved in succession from the associated injection event memory (EES) and executed in a sequence in which they were stored in the associated injection event memory (EES) by the associated injection determining process (EEP) (FIFO: first in first out). The in each case next injection event (EE) is executed only after the end of an execution of the in each case previously executed injection event (EE).12-22-2011
20110308498Method and control device for operating an internal combustion engine - In a method for controlling operation of an internal combustion engine using a control device, a setpoint value of a first fuel injection quantity is specified for a first combustion cycle, and the first fuel injection quantity is injected. A combustion pressure is ascertained during the first combustion cycle, and in a further step, a setpoint value of a second fuel injection quantity is ascertained for a second combustion cycle based on the combustion pressure.12-22-2011
20090007888Combustion Control System Based On In-Cylinder Condition - Combustion control of a diesel engine is achieved, such that the engine has a monotonic relation between intake manifold pressure and engine torque. For a given engine speed, fuel injection parameters are primarily determined by intake manifold pressure. However, the determination of the fuel injection parameters is also secondarily based on correction factors such as oxygen concentration, intake manifold temperature, and coolant temperature. In effect, the fuel injection parameters reflect the in-cylinder gas mass.01-08-2009
20120234298CLASSIFICATION METHOD FOR AN INJECTOR, CALIBRATION METHOD FOR A CHARACTERISTIC MAP OF AN INJECTOR, AND TEST BENCH DEVICE FOR AN INJECTOR - A classification method for an injector may include: actuating the injector by means of a predefinable test control signal, detecting a quantity of liquid dispensed by the injector on the basis of the test control signal, classifying the injector as a function of the detected dispensed quantity of liquid, and determining a required control signal on the basis of the classification of the injector considering a reduced injector stroke. A calibration method for a characteristic map of an injector, and a test bench device for performing the injector classification method are also provided.09-20-2012
20100263633FUEL INJECTION VALVE AND FUEL INJECTION APPARATUS - The injector body 10-21-2010
20110120420Method for determining a characteristics map of the injection quantity via an electric variable of an electrically triggered fuel injector - A method for determining a characteristics map of the injection quantity (Q) via an electric variable (U05-26-2011
20110283975CIRCUIT ARRANGEMENT FOR CONTROLLING AN INJECTION VALVE - A circuit arrangement controls at least one injection valve, in particular a solenoid injection valve, for an internal combustion engine. The circuit includes a supply potential connection, a reference potential connection; one or more solenoids; a controllable voltage boosting circuit for generating from the first voltage a second voltage that is higher than the first voltage. The voltage boosting circuit is connected at a first input to the supply potential connection and at a first output to the solenoids by means of a respective first controllable semiconductor switching element. A control circuit is connected at least to a respective first semiconductor switching element and the voltage boosting circuit. The control circuit applies the first or the second voltage to the first coil connection of exactly one solenoid depending on an actuation state of one of the injection valves.11-24-2011
20110079199METHOD FOR DETECTING DEVIATIONS OF INJECTION QUANTITIES AND FOR CORRECTING THE INJECTION QUANTITY, AND INJECTION SYSTEM - A method provides for detecting deviations of injection quantities for injections into internal combustion engines, as carried out for example by common-rail systems. At least one deviation of at least one injection quantity is detected by determining at least one deviation, from a predefined value in each case, of at least one value of at least one variable controlling an actuator of the injector and/or indicating at least one state of the actuator.04-07-2011
20110203553CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE - A control device which can reduce an exhaust amount of unburned HC at a time of start of an internal combustion engine using a fuel containing alcohol is provided. The control device controls closing timing of an exhaust valve and opening timing of an intake valve so as to close the exhaust valve at a timing at an advance side from an intake top dead center and enlarge a minus overlap until the intake valve is opened after the exhaust valve is closed in accordance with the alcohol concentration of the fuel, for a predetermined time period (hereinafter, a first predetermined time period) at a time of start. The control device controls fuel injection timing so as to start fuel injection in the minus overlap for a second predetermined time period at the time of start which is included in the first predetermined time period.08-25-2011
20080276908Throttle apparatus having electronic control means built-in - The present invention provides a throttle apparatus having an electronic control means built-in which uses an engine fuel supply system having a carburetor specification and is arranged for constructing a fuel injection system in accordance with an electronic control.11-13-2008
20100275885Method for Determining an Opening Voltage of a Piezoelectric Injector - A method for determining an opening voltage of an injector having a piezo actuator, in particular an injector of an internal combustion engine, in which an output voltage is applied at the piezo actuator in the closed state of the injector, and the voltage is lowered by energizing the piezo actuator so as to open the injector. The energy supply is interrupted at a holding voltage and the voltage change present at the piezo actuator is then measured over the time, the reaching of the opening voltage being inferred in the case of a voltage rise.11-04-2010
20090025688FUEL INJECTION CONTROL APPARATUS - The fuel injection control apparatus includes a function of making a determination of whether learning conditions are satisfied to allow a fuel injection amount learning to be performed, a function of directing a commanded fuel injection amount in the fuel injection amount learning to a fuel injection valve if result of the determination is affirmative, a function of setting an upper limit value of an injection pressure in the fuel injection amount learning, a function of setting a target injection pressure in the fuel injection amount learning, a function of setting the injection pressure to the target injection pressure, a function of detecting an actual fuel injection amount, and a function of correcting an amount of fuel injected by the fuel injection valve on the basis of a difference between the commanded fuel injection amount and the actual fuel injection amount at the target injection pressure.01-29-2009
20090241909Shot mode transition method for fuel injection system - A fuel injection system for a combustion engine is disclosed. The fuel injection system may have a fuel injector configured to inject fuel in one of a first shot mode and a second shot mode. Additionally, the fuel injection system may have a sensor configured to sense a parameter indicative of a desired rate of change of a supplied fuel quantity and generate a corresponding signal. The fuel injection system may also have a controller in communication with the fuel injector and the sensor. The controller may be configured to operate the fuel injector in one of the first shot mode and the second shot mode during an injection event, based on a count and the signal.10-01-2009
20110139124Method for operating at least one injector of an internal combustion engine - A method for operating at least one injector of an internal combustion engine, in which a voltage applied to the injector is varied, and a rotational speed pattern of the internal combustion engine is ascertained as a function of the voltage, a setpoint voltage, suitable for operating the at least one injector, corresponding to that varied applied voltage for which a peak arises in a spectrum of the rotational speed pattern.06-16-2011
20100162999Method and device for controlling an internal combustion engine - A device and a method for controlling an internal combustion engine are provided, in which the fuel quantity to be injected is controlled as a function of a Lambda signal. A setpoint value for the Lambda signal is specified on the basis of at least one maximally permitted exhaust-gas temperature value.07-01-2010
20130213362FUEL INJECTION APPARATUS FOR INTERNAL COMBUSTION ENGINE - The fuel injection apparatus 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. The fuel injection apparatus controls an injection amount from the fuel injector such that an air-fuel ratio of an internal combustion engine is a control target air-fuel ratio based on an alcohol concentration of the blended fuel to be supplied to the fuel injector. In this fuel injection apparatus, a fuel pressure is brought to a predetermined low fuel pressure when a request is issued for desorbing alcohol adsorbed on the adsorbent.08-22-2013
20100163000APPARATUS AND METHOD FOR CONTROLLING A FUEL INJECTOR UNDER ABNORMAL CONDITIONS - A control device (07-01-2010
20100258088SPEED AND POSITION SENSING DEVICE FOR EMD TWO-CYCLE DIESEL ENGINES - A device is disclosed for sensing the speed of an EMD 567/645/710 two-cycle diesel engine having a crankcase, electronic fuel injectors and an electronic control system for controlling the electronic fuel injectors. The device includes a spline shaft sized for insertion into the crankcase of the engine so that the spline shaft rotates with the engine, a gear operably secured to the spline shaft to rotate with the spline shaft and sized to rotate with the engine in a 1:1 ratio, and at least one electronic sensor located adjacent the gear to sense rotation of the gear. The at least one electronic sensor is connectable to the electronic control system to provide electronic signals to the electronic control system for determining when to inject fuel with the electronic fuel injectors. Also disclosed is a method for retrofitting the engine and a kit for retrofitting the engine.10-14-2010
20100192914METHOD AND DEVICE FOR OPERATING AN INJECTION VALVE - In a method and a device for operating an injection valve, a relevant time (t_ACT) is determined during a catch phase (PH_CATCH) when the electromagnetic actuator reaches a predetermined fraction value of the electric current, which value is smaller than a maximum current value, and a fraction of interval (T_FRAC) since the start of the respective catch phase (PH_CATCH) is determined depending thereon and the injection valve is diagnosed depending on the fraction of interval (T_FRAC) and the predetermined minimum and maximum threshold interval values (THD_T_MIN, THD_T_MAX).08-05-2010
20100252003INJECTOR - An injector has a body that defines a high-pressure passage for passing high-pressure fuel to an injection hole inside, a needle that is accommodated in the body and that opens and closes the injection hole, an electric actuator that causes the needle to perform the opening and closing action, a lead wire that is arranged in a lead wire insertion hole formed in the body and that supplies an electric power to the electric actuator, and a fuel pressure sensor that is fixed to the body and that senses pressure of the high-pressure fuel. An outlet hole, via which the lead wire extends from the lead wire insertion hole to an outside of the body, is located at a position closer to the injection hole than the fuel pressure sensor is.10-07-2010
20100059022Method, Device, and System for Operating an Internal Combustion Engine - A device and a method for operating an internal combustion engine having at least one cylinder and a tank ventilation system with a line designed to provide pneumatic communication between the tank ventilation system and the at least one cylinder. The line has at least one sensor for determining a hydrocarbon content of a gas flow. A determination, as a function of a measurement signal from the sensor, of a hydrocarbon content of a gas flow flowing from the tank ventilation system to the at least one cylinder is performed. At least one characteristic variable for a fuel quantity to be metered is determined as a function of the determined hydrocarbon content. A metering of fuel into the cylinder is determined as a function of the at least one determined characteristic variable.03-11-2010
20110000466Multi-Layer Piezoelectric Element, Method for Manufacturing The Same, Injection Apparatus and Fuel Injection System - A multi-layer piezoelectric element that has high durability with capability to operable continuously under higher voltage and higher pressure over a long period of time, a method for manufacturing the same, an injection apparatus and a fuel injection system are provided.01-06-2011
20110000465METHOD AND DEVICE FOR CONTROLLING AN INJECTION SYSTEM OF AN INTERNAL COMBUSTION ENGINE - A method for controlling an injection system of an internal combustion engine, a fuel injection being performed using at least one piezoelectric actuator which acts directly or transmittedly on a nozzle needle of an injector, and an activation voltage determining the actuator operation being corrected as a function of a pressure wave influence of the fuel injection, provides that the pressure waves applied to the nozzle needle and caused by an injection are ascertained by measuring the actuator voltage during an injection break and the actuator voltage of a following injection is modulated in accordance with the pressure waves on the nozzle needle.01-06-2011
20110005495PIEZOELECTRIC FUEL INJECTOR HAVING A TEMPERATURE COMPENSATING UNIT - The present invention provides a fuel injector, comprising a housing having a sealable injector seat; a fuel injector pin disposed within the housing proximate) the injector seat such that the injector seat may be sealed and unsealed by displacing the fuel injector pin; a resilient element biasing the fuel injector pin in an unsealed direction; a piezoelectric actuator disposed within the housing proximal to the fuel injector pin configured to actuate to force the injector pin towards the injector seat to seal the injector seat; and a thermal compensating unit disposed within the housing proximal to the actuator and configured to compensate for thermal expansion or contraction of a component of the fuel injector.01-13-2011
20100059021FUEL INJECTION SYSTEM AND METHOD FOR ASCERTAINING A NEEDLE STROKE STOP IN A FUEL INJECTOR - In fuel injection system having at least one fuel injector and a control unit for triggering the injector, each injector has a piezoelectric actuator, a nozzle element having at least one nozzle opening and at least one movable nozzle needle for selectively closing and opening the at least one nozzle opening, a hydraulic coupling element, which is connected between the piezoelectric actuator and the nozzle needle, and at least one stroke stop, against which the nozzle needle rests in its completely open and/or completely closed position. To be better able to ascertain when the stroke stop is reached in such injectors, the needle stroke stop is ascertained during an energization pause of the piezoelectric actuator by analyzing a voltage signal applied to the piezoelectric actuator. Oscillations of the voltage signal during the energization pause are preferably analyzed. To this end, regression lines are drawn through the voltage characteristic, a correlation coefficient of the regression lines to the voltage characteristic is ascertained and a needle stroke stop is detected on the basis of the correlation coefficient.03-11-2010
20080302338 CONTROL METHOD OF A FUEL FEEDING SYSTEM IN A BI-FUEL INTERNAL COMBUSTION ENGINE - A control method of a fuel feeding system in a bi-fuel internal combustion engine; the feeding system presents: a least a first injector adapted to inject a first fuel type; a least a second injector adapted to inject a second fuel type; a common electronic control unit adapted to drive both injectors; and a switching device, which is controlled by the common electronic control unit and is adapted to electrically connect both injectors to the common electronic control unit by means of at least a first relay adapted to connect/disconnect the first injector to/from the common electronic control unit and by means of at least a second relay adapted to connect/disconnect the second injector to/from the common electronic control unit.12-11-2008
20120125296CONTROL APPARATUS FOR INTERNAL COMBUSTION ENGINE - A control apparatus for an internal combustion engine includes a booster, a first controller, and a second controller. The booster is configured to increase an output voltage of a battery to a drive voltage of a fuel injection unit of the internal combustion engine. The first controller has a first initialization time after boot of the first controller. The first controller is configured to control the booster to increase the output voltage to the drive voltage at start-up of the internal combustion engine. The second controller has a second initialization time after boot of the second controller. The second initialization time is longer than the first initialization time of the first controller. The second controller is configured to control the booster to increase the output voltage to the drive voltage after the start-up of the internal combustion engine is completed.05-24-2012
20110100331FUEL INJECTION CONTROLLING SYSTEM OF INTERNAL COMBUSTION ENGINE - A fuel injection controlling system includes an accelerator manipulator. An accelerator manipulated variable detection sensor is configured to detect a manipulated variable of the accelerator manipulator. A rotation speed sensor is configured to detect a rotation speed of an engine. A throttle valve drive motor is configured to open and close the throttle valve in response to the manipulated variable. A controller is configured to control the throttle valve drive motor and to compute basic injection time (Ti) of fuel. A memory is configured to memorize, as a carbon adhesion judgment value (IXREF), a throttle opening degree (θTH) at a moment when a rotation speed (Ne) detected with the rotation speed sensor reaches a target idle rotation speed (NeIdle) by increasing the throttle opening degree (θTH). A corrector is configured to correct Ti with IXREF to correct an air-fuel ratio toward a leaner side as IXREF increases.05-05-2011
20110100330FUEL INJECTION CONTROL APPARATUS - A fuel injection control apparatus for controlling a fuel injection valve including an arithmetic processing section that determines whether a necessary fuel amount is injectable or not within a fuel injectable range from a first fuel injection start timing, computes a second fuel injection start timing in which the necessary fuel amount is injectable within the fuel injectable range in the case that it is not injectable, and controls the fuel injection valve at the computed second fuel injection start timing so as to start fuel injection.05-05-2011
20110132331VACUUM SUPPLY SYSTEM - A method of operating a boosted engine system is described in which an ejector coupled with a fuel vapor purging system can generate vacuum during both purging and non-purging conditions, and during both boosted and non-boosted conditions. The vacuum can therefore be used to power vacuum actuated brakes, and/or other vacuum actuators, irrespective of the purging conditions, and irrespective of boost levels.06-09-2011
20100024776PIEZOELECTRIC FUEL INJECTOR HAVING A TEMPERATURE COMPENSATING UNIT - The present invention provides a fuel injector, comprising a housing having a sealable injector seat; a fuel injector pin disposed within the housing proximate to the injector seat such that the injector seat may be sealed and unsealed by displacing the fuel injector pin; a resilient element biasing the fuel injector pin in an unsealed direction; a piezoelectric actuator disposed within the housing proximal to the fuel injector pin configured to actuate to force the injector pin towards the injector seat to seal the injector seat; and a thermal compensating unit disposed within the housing proximal to the actuator and configured to compensate for thermal expansion or contraction of a component of the fuel injector.02-04-2010
20110315123PIEZOELECTRIC FUEL INJECTOR HAVING A TEMPERATURE COMPENSATING UNIT - The present invention provides a fuel injector, comprising a housing having a sealable injector seat; a fuel injector pin disposed within the housing proximate to the injector seat such that the injector seat may be sealed and unsealed by displacing the fuel injector pin; a resilient element biasing the fuel injector pin in an unsealed direction; a piezoelectric actuator disposed within the housing proximal to the fuel injector pin configured to actuate to force the injector pin towards the injector seat to seal the injector seat; and a thermal compensating unit disposed within the housing proximal to the actuator and configured to compensate for thermal expansion or contraction of a component of the fuel injector.12-29-2011
20110155105Control Unit of Fuel Injector - An injection control unit of a fuel is provided, which prevents generation of a nozzle deposit of a fuel injector. In a control unit of a fuel injector capable of controlling a lift height that is a distance between a valve body and a valve seat, after start of fuel injection and before end of the fuel injection, after the lift height is controlled to a first height, a period in which the lift height is controlled to a second height which is lower than the first height is provided for a predetermined period. According to such a configuration, when the lift height of the valve body is lowered to the second height after the fuel is injected at the first height, a fuel velocity in the vicinity of an inner wall of an injection port is increased due to an inertial force of the fuel and reduction in an opening area. By a fuel flow at a high velocity, a contamination substance adhering to a wall surface is washed away.06-30-2011
20120055449HYSTERESIS-TYPE ELECTRONIC CONTROLLING DEVICE FOR FUEL INJECTORS AND ASSOCIATED METHOD - A hysteresis-type electronic controlling device is provided for fuel injectors that includes, but is not limited to a power driving unit for driving the fuel injectors with an electric signal, a control stage connected to the power driving unit and a sensing stage fed by the power driving unit and feeding the control stage, the device has a feedback frequency control stage for measuring a waveform period of the signal feeding the fuel injectors; the feedback frequency control stage is fed by the control stage with an electric signal. A fuel injector control method is also provided that includes, but is not limited to driving fuel injectors with an electric signal coming from a power driving unit fed by a control stage , sensing the signal with a sensing stage, and measuring a waveform period of the signal through the feedback frequency control stage.03-08-2012
20120152207METHOD FOR OPERATING A FUEL INJECTOR OF AN INTERNAL COMBUSTION ENGINE, AND CONTROL DEVICE FOR AN INTERNAL COMBUSTION ENGINE - In a method for operating a fuel injector, a transition range of the characteristics curve of the injector is detected individually and adapted continuously, so that a monotonous characteristics curve is formed, with whose aid high metering precision of the injector is achieved.06-21-2012
20100095936METHOD AND CONTROL DEVICE FOR CONTROLLING A FUEL INJECTOR - A method for controlling a fuel injector, having a piezoelectric actuator, for an internal combustion engine. The method includes a step of controlling the actuator using an actuator current signal for a fuel injection, an actual actuator voltage being ascertained during the fuel injection. After a comparison of whether the actual actuator voltage is greater than an actuator voltage threshold value, if the actual actuator voltage is greater than the actuator voltage threshold value, the actuator current signal is controlled for an additional fuel injection, in such a way that the actual actuator voltage approaches a setpoint actuator voltage, during the additional fuel injection. Also a computer program product for carrying out the method, and a control device for controlling a piezoelectric actuator of a fuel injector for an internal combustion engine are also provided.04-22-2010
20120125295ENGINE CONTROLLER - An ECU detects a shaft torque in a specified torque detection range defined for each cylinder. The shaft torque is generated due to a combustion of the fuel and is applied to a crankshaft of the engine. The ECU computes a crank angle position as an actual peak position at which a combustion torque is peak. The ECU stores a previously determined maximum torque position which corresponds to a crank angle position at which a combustion torque becomes peak. Based on the actual peak position and the previously stored maximum torque position, an igniter controls an ignition timing.05-24-2012
20100288236DIRECT INJECTION SPARK IGNITION INTERNAL COMBUSTION ENGINE AND METHOD FOR CONTROLLING SAME - In a direct injection spark ignition internal combustion engine that performs an Atkinson cycle operation in which the time to close intake valves is retarded, the tumble flow in the engine cylinder is intensified by fuel injected from a fuel injection valve during a time period from an intake stroke bottom dead center to closing of the intake valves.11-18-2010
20110180043GENSET ENGINE WITH AN ELECTRONIC FUEL INJECTION SYSTEM INTEGRATING ELECTRICAL SENSING AND CRANK POSITION SENSING - An open or closed loop EFI system, integrated on a genset engine or any internal combustion engine, with an electrical sensor and crank position sensor is described. Since a genset engine's exhaust emissions and general performance are a function of spark timing, integration of electrical and crank position sensors on a genset engine provides optimal engine performance and efficiency when the electrical draws fluctuate. The electrical sensor and crank position sensor send data to the electronic control unit (ECU), and this data is used to determine the optimal air-to-fuel ratio (AFR) and optimal spark timing. The ECU varies the spark timing in accordance with the speed and load of the engine and actuates the fuel injector to send the correct amount of atomized fuel to mix with the air flow to be combusted allowing the engine to meet performance.07-28-2011
20110180042GENSET THAT USES AN OPEN LOOP ELECTRONIC FUEL INJECTION SYSTEM AND OPERATES ON GASEOUS FUELS - A genset engine that operates on an open loop EFI system and runs on gaseous fuels is described. The integration of various air sensors, including for example a manifold air temperature (MAT) sensor, a manifold absolute pressure (MAP) sensor, or an air flow sensor(s), can provide optimal engine performance when using gaseous fuels and when starting from a cold state. The sensors employed send data to the electronic control unit (ECU) and such data is used to determine the optimal air-to-fuel ratio (AFR). The ECU actuates the injector and the injector sends the requested amount of gaseous fuel to mix with the air flow to be combusted. This provides the engine with a gaseous fuel and air mixture that is at the requested relative AFR and the engine is able to start and meet performance.07-28-2011
20110180040SWITCH-MODE SYNTHETIC POWER INDUCTOR - A fuel delivery system for a vehicle includes a fuel injector that meters fuel flow and provides for pre-heating fuel to aid combustion. A control circuit including a synthetic inductor drives a heated element within the fuel flow.07-28-2011
20120255523DUAL FUEL INJECTOR AND ENGINE USING SAME - A dual fuel injector may be used to injector both gas and liquid fuel into a cylinder of a compression ignition engine. An injector body defines a first set of nozzle outlets, a second set of nozzle outlets, a first fuel inlet and a second fuel inlet. A dual solenoid actuator includes a first armature, a first coil, a second armature, a second coil and a lever. The dual solenoid actuator has a non-injection configuration at which the first armature is in an un-energized position, the second armature is at un-energized position and the lever is at a first angular orientation. A dual solenoid actuator has a first fuel injection configuration at which the first fuel inlet is fluidly connected to the first set of nozzle outlets, the first armature is at an energized position, the second armature is at the un-energized position and the lever is at the first angular orientation. The dual solenoid actuator has a second fuel injection configuration at which the second fuel inlet is fluidly connected to the second set of nozzle outlets, the first armature is at the un-energized position, the second armature is at an energized position and the lever is at a second angular orientation. The dual solenoid actuator may also include a combined fuel injection configuration.10-11-2012
20120266846Dual fuel diesel engine system - A dual fuel system and method for an engine including a liquid fuel supply subsystem for supplying liquid fuel to the engine and an electronic control module configured to control, via one or more liquid fuel control signals, the amount of liquid fuel supplied to the engine based on one or more sensor signals. A gaseous fuel supply subsystem is configured to supply gaseous fuel to the engine and an electronic controller subsystem responsive to liquid fuel control signal(s) is configured to determine, based on the liquid fuel control signals, a modified amount of liquid fuel and an amount of gaseous fuel to be supplied to the engine for dual fuel operation.10-25-2012
20120266847Method and System for Pre-Ignition Control - Methods and systems are provided for addressing cylinder pre-ignition by adjusting a spray angle of fuel injected into a cylinder responsive to an indication of pre-ignition. A spray pattern of fuel injected in the cylinder is varied based on a cylinder pre-ignition count to reduce cylinder wall impingement of injected fuel while improving air-fuel mixing in the cylinder.10-25-2012
20100170478DETERMINING AND CORRECTING THE PHASING OF THE ANGULAR POSITION OF A FOUR-STROKE INTERNAL COMBUSTION ENGINE WITH INDIRECT INJECTION AND TIME-CONTROLLED SEQUENTIAL REINJECTION/SEQUENTIAL INJECTION CUTOFF - A method for determining the phasing of the angular position of a four-stroke internal combustion engine with indirect injection and time-controlled sequential reinjection/sequential injection cutoff, characterized in that it includes, with the engine running, the following steps: 07-08-2010
20110132330System and Method for Injecting Fuel to a Gaseous Fueled Engine - A method for controlling injection timing for a gaseous fuel injector is described. In one example, the fuel injector is opened with a saturating fuel injector at a predetermined crankshaft angular position. In one embodiment, the predetermined crankshaft angular position corresponds to at least one crankshaft angular position where battery voltage increases during engine cranking.06-09-2011
20130019842FLOW RATE ESTIMATION FOR PIEZO-ELECTRIC FUEL INJECTION - Improving tradeoffs between noise, fuel consumption, and emissions in future diesel engines are facilitated by the development of increasingly flexible fuel injection systems which can deliver more complex injection profiles. Piezoelectric injectors have the ability to deliver multiple, tightly spaced injections in each cycle. Closed-loop control is useful for this technology, and is assisted by on-line estimation of the injected fuel flow rate to be realized. Estimator results are compared against both open-loop simulation and experimental data for a variety of profiles at different rail pressures, and show improvement, particularly for more complex multi-pulse profiles. Internal states of the estimator are used to evaluate pulse-to-pulse interaction phenomena. Some embodiments include the use of estimations of actual transient fuel pulses, and the use of such estimations to achieve closed-loop control of the quantity of fuel injected in a pulse, and the dwell time between adjacent fuel pulses.01-24-2013
20130167808FUEL-INJECTION SYSTEM FOR AN INTERNAL-COMBUSTION ENGINE - A fuel-injection system for an internal-combustion engine has at least one fuel injector with a fuel-metering servo valve provided with an open/close element, which is movable in response to the action of an electric actuator; and an electronic control unit which issues to the electric actuator two electrical commands, one for carrying out a pilot injection and one for carrying out a main injection; the two electrical commands being separated by an electrical dwell time such that the main injection starts, without solution of continuity with the pilot injection, when an open/close needle for carrying out fuel injections into a cylinder of the internal-combustion engine remains at a lift value in which the fuel flow rate is negligible; in particular, the second electrical command is issued during a rebound of the open/close element on the valve seat.07-04-2013
20130167809METHOD AND DEVICE FOR OPERATING A FUEL INJECTION SYSTEM - In a method for operating a fuel injection system for an internal combustion engine of a motor vehicle, an output signal of a pressure sensor which characterizes a fuel pressure in a pressure accumulator is evaluated. An undesirably high fuel pressure in the pressure accumulator and/or a fault in the fuel injection system is/are inferred at the time when the output signal assumes a maximally possible value for at least a predefinable monitoring period.07-04-2013
20130139791DRIVE UNIT OF FUEL INJECTION DEVICE - In a drive unit of a fuel injection device, an electric current is supplied to the fuel injection device by applying a high voltage to the fuel injection device from a high voltage source whose voltage is boosted to a voltage higher than a battery voltage at the time of opening a valve of the fuel injection device. Thereafter, the electric current supplied to the fuel injection device is lowered to a current value at which a valve element cannot be held in a valve open state by stopping the applying of the high voltage from the high voltage source. Thereafter, in a stage where a supply current is switched to a hold current, another high voltage is applied to the fuel injection device from the high voltage source.06-06-2013
20130112172Fuel Injection Control Device for Internal Combustion Engine - Disclosed is an fuel injection control device for an internal combustion engine, including a high-voltage generating circuit for generating a high voltage exceeding a battery voltage, which is a voltage for driving an injector, the battery voltage and high voltage being used to supply a hold current Ih, as well as a valve-opening current Ip as a driving current, to the injector, the control device allowing a fuel injection pulse signal to be output to one cylinder in a plurality of fuel injection timings during one combustion cycle, wherein, after the high voltage is consumed by driving the injector and decreases, a time required for the high-voltage generating circuit to restore high voltage to a predetermined value is calculated, and wherein, when driving control for any other injector is demanded during restoration time, injection is controlled by correcting at least one of fuel injection timing and fuel injection pulse width.05-09-2013
20130098336METHOD AND SYSTEM FOR PRE-IGNITION CONTROL - Methods are provided for controlling an engine in response to a pre-ignition event. A pre-ignition threshold and a pre-ignition mitigating action are adjusted based on a rate of change of cylinder aircharge. As a result, pre-ignition events occurring during transient engine operating conditions are detected and addressed different from pre-ignition events occurring during steady-state engine operating conditions.04-25-2013
20130133624TWO-CYCLE ENGINE - Disclosed herein is a two-cycle engine that includes an exhaust port which is opened and closed at one end portion in a longitudinal direction of a cylinder; a scavenging port which is opened and closed at the other end portion in the longitudinal direction of the cylinder; and a fuel injection port which injects a fuel into the cylinder provided between the exhaust port and the scavenging port, wherein the fuel begins to be injected in a state in which at least any one of the exhaust port and the scavenging port is opened.05-30-2013
20080202474Control system for general-purpose engine - In a system for controlling a general-purpose internal combustion engine having two cylinders each equipped with a throttle valve and a fuel injector, and a cooling fan that sucks in and blows air onto the cylinders, there are provided a throttle driver that drives the throttle valve of each cylinder to open/close, an injector driver that drives the injector of each cylinder to open and a controller that controls operation of the throttle driver and injector driver in such a way that the throttle opening and an amount of fuel to be injected are different for each cylinder, such that an engine speed becomes constant, thereby enabling to obtain desired output characteristics.08-28-2008
20080196695EVENT-BASED DIRECT INJECTION ENGINE STARTING WITH A VARIABLE NUMBER OF INJECTIONS - A method for starting an internal combustion engine having direct fuel injection into a cylinder, comprising of only for a first combustion event under selected conditions during an engine start, directly injecting fuel to the cylinder at least twice, where each of said two injections at least partially occur during a compression stroke.08-21-2008
20100307457FUEL INJECTION CONTROLLER - A fuel injection controller includes an ECU controlling an operation of a fuel injector based on a characteristic data of the fuel injector, an EEPROM provided to the injector, and an EEPROM provided to the ECU. Identification information by which the fuel injector is individually identified is stored in both of the EEPROMs. It is determined whether the identification information stored in the injector-side EEPROM is identical to the identification information stored in the ECU-side EEPROM. Based on this determination result, it can be determined whether the injector and/or the ECU are exchanged to new one.12-09-2010
20100307456METHOD AND CONTROL UNIT FOR ELECTRIC CONTROL OF AN ACTUATOR OF AN INJECTION VALVE - A method for the electric control of an actuator of an injection valve in an injection facility for an internal combustion engine has the following steps: specifying a target value for a controlled variable (E) of the actuator, pilot controlling the controlled variable (E) according to a pilot control characteristic that is specified by an axis section (OffsCal, Offs-Real) and a characteristic gradient, wherein as part of the pilot control corresponding to the specified target value according to the pilot control characteristic a control variable for the electric control of the actuator is determined, and readjustment of the pilot control characteristic, wherein a control deviation (ΔE) is ascertained as part of the readjustment and the pilot control characteristic is adapted as a function of the control deviation (ΔE). It is proposed that as part of the readjustment the axis section of the pilot control characteristic is set.12-09-2010
20130192566CONTROL SYSTEM HAVING CONFIGURABLE AUXILIARY POWER MODULE - A control system is disclosed for use with an engine. The control system may have a power source and a main control module configured to receive power from the power source and direct control signals to at least one component of the engine. The control system may also have an auxiliary power module that is selectively connectable to the main control module and to the power source. The auxiliary power module may be configured to receive power from the power source and direct control signals through the main control module to the at least one component of the engine.08-01-2013
20130206111Method and Device for Operating a High-Pressure Accumulator Fuel Injection System for an Internal Combustion Engine - A method is disclosed for operating a high-pressure accumulator fuel injection system for an internal combustion engine of a motor vehicle which has a stop-start automatic function by way of which the internal combustion engine can be switched off and restarted afterwards independent of the intervention of the driver of the motor vehicle, the fuel being conveyed to the high-pressure accumulator as needed by means of a high-pressure pump and the pressure of the fuel being adjusted on the pressure side by means of a pressure control valve which is electrically actuated and open when de- energized. According to the method, the supply with power of the pressure control valve is adapted to the prevailing pressure in the high-pressure accumulator during a stop phase within a stop-start cycle.08-15-2013

Patent applications in class Actuator circuit (e.g., engine condition responsive electronic circuit actuates injector valve)

Patent applications in all subclasses Actuator circuit (e.g., engine condition responsive electronic circuit actuates injector valve)