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| Number | Title | Issue Date |
| 8166953 | Fuel injection apparatus Fuel injection apparatus comprising a solenoid coil (40); an armature (41) coupled with a valve element (34) operable to open and close a fuel valve (32) when the solenoid coil (40) is selectively energized and de-energised. The va... | 05/01/2012 |
| 8113179 | Programmable diesel fuel injector An apparatus for injecting fuel into a combustion chamber of an internal combustion engine. The apparatus includes a solid magnetostrictive material with a favored direction of magnetostrictive response formed into a shape with ends that are substantially parallel t... | 02/14/2012 |
| 8109256 | Solenoid current control with direct forward prediction and iterative backward state estimation An engine control system comprises a current control module and a solenoid actuator module. The current control module determines a duty cycle based on a desired current through a solenoid of an engine system and a resistance of the solenoid and corrects the resista... | 02/07/2012 |
| 8104451 | Fuel injection device having an improved electrical plug and socket connection A fuel injection device for injecting fuel includes an electrical-plug-and-socket connection configured as a modular component. The electrical-plug-and-socket connection includes an electric line region and exactly one one-piece plug contact molding. The plug contac... | 01/31/2012 |
| 8087400 | Method and device for metering a fluid An injection valve has a magnetic actuator and an injector needle able to be moved axially by the magnetic actuator. To meter a fluid by the injection valve the magnetic actuator is activated for an individual metering process with at least one actuation signal with... | 01/03/2012 |
| 8082903 | Method for operating an injector A method is for operating an injector, in particular a fuel injector of an internal combustion engine in a motor vehicle, the injector having a piezoelectric actuator for driving a valve needle coupled, preferably hydraulically, to the actuator. Starting from a star... | 12/27/2011 |
| 8074625 | Fuel injector actuator assemblies and associated methods of use and manufacture The present disclosure is directed to integrated injector/igniters providing efficient injection, ignition, and complete combustion of various types of fuels. One example of such an injectors/igniter can include a body having a base portion opposite a nozzle portion... | 12/13/2011 |
| 8011351 | Method for driving solenoid-actuated fuel injectors of internal combustion engines An accurate control of a solenoid-operated fuel injector in a Diesel or gasoline engine specifies that a pull-in voltage (Vpull-in) higher than the generally available battery voltage (Vbatt) is applied to the injector, and that the injection is ended as quickly as ... | 09/06/2011 |
| 7954475 | Fuel injector A fuel injector for injecting fuel into a combustion chamber of an internal combustion engine. A fuel supply line enters an injector housing from a high-pressure fuel source which can be hydraulically connected to a pressure chamber. A 3/2 directional control valve ... | 06/07/2011 |
| 7946276 | Protection device for a solenoid operated valve assembly A fuel injector is disclosed. The fuel injector includes an injector valve needle and a valve actuation assembly including a stator, an armature, and a valve, the valve in fluid communication with the injector valve needle. A stator protection device is positioned b... | 05/24/2011 |
| 7931009 | Fuel injector designed to minimize mechanical stress on fuel pressure sensor installed therein A fuel injector for an internal combustion engine is provided. The fuel injector is to be installed in a cylinder head of the engine and has a fuel pressure sensor working to measure the pressure of fuel within a injector body. The fuel pressure sensor is installed ... | 04/26/2011 |
| 7918211 | Ultrasonic fuel injector A fuel injector for delivering fuel to an engine in which a housing of the injector has an internal fuel chamber and at least one exhaust port in fluid communication with the fuel chamber. A valve member is moveable relative to the housing between a closed position ... | 04/05/2011 |
| 7856964 | Method of controlling a piezoelectric actuator A method for controlling the displacement of a stack of a piezoelectric actuator for use in a fuel injector comprises determining a desired amount of charge (ΔQ) to be added or removed from the stack. The method further comprises determining an operating parameter ... | 12/28/2010 |
| 7832378 | Device for switching inductive fuel injection valves Disclosed are a method and a device for more rapidly switching inductive fuel injection valves. According to the invention, the magnetic retaining forces generated by remanence in a bistable valve comprising an opening and closing coil or by eddy currents in a stand... | 11/16/2010 |
| 7798130 | Fuel injection system for an internal combustion engine With reference to FIG. 1, the present invention provides an internal combustion engine (10) comprising a variable volume combustion chamber (13); an air intake system (18,20,21) for delivering charge air to the combustion chamber (13 | 09/21/2010 |
| 7789072 | Fuel injection circuit with selectable peak injection currents A charging circuit for a fuel injection coil enables the controller to selectively add a pulse of increased amplitude to the beginning of an injection current pulse. Optionally, the controller can also select one of a plurality of amplitudes for the pulse and contro... | 09/07/2010 |
| 7789073 | Fuel injection control apparatus A fuel injection control apparatus is capable of reducing a minimum quantity of fuel injection without reducing a maximum quantity of injection. To open a fuel injector valve, a driving circuit supplies an electric current from a high-voltage power supply to the fue... | 09/07/2010 |
| 7765987 | Apparatus for actuating at least one piezoelectric actuating drive of an injection nozzle for an internal combustion engine An apparatus is described for actuating at least one piezoelectric actuating drive (1) of an injection nozzle for an internal combustion engine, comprising a control device (6) which cyclically actuates a charging circuit and a discharging circuit (... | 08/03/2010 |
| 7681555 | Controller for a fuel injector and a method of operating a fuel injector A controller for controlling the operation of a fuel injector having a piezoelectric actuator which is operable by the application of a voltage drive profile across the actuator, the controller comprising inputs for receiving data relating to one or more engine para... | 03/23/2010 |
| 7628141 | Method for controlling an electrical actuator A method to improve the performance of an electrically controlled actuator is described. The method is capable of improving engine starting during at least some operating conditions. ... | 12/08/2009 |
| 7621259 | Internal combustion engine controller In a voltage boost circuit for driving a fuel injector of an internal combustion engine, a high voltage developed in the voltage boost coil will be discharged into the battery power supply through the boost coil by electrically energizing a discharge switching eleme... | 11/24/2009 |
| 7617813 | Method for controlling a piezoelectric actuator and control unit for controlling a piezoelectric actuator A method for controlling a piezoelectric actuator which displaces a control element of an injection valve includes the step of charging the actuator until a start voltage is reached. Subsequently, the actuator is discharged until a partial lifting voltage, which is ... | 11/17/2009 |
| 7578284 | Internal combustion engine controller An internal combustion engine controller has: a voltage booster circuit for boosting a battery power source; a booster side driver element for flowing a current through the injectors by using the boosted voltage; a battery side driver element disposed in parallel wi... | 08/25/2009 |
| 7571715 | Electrical disconnection in fuel injectors A fuel injector with an injector body is disclosed which has at least two separate function units that are largely independent of one another. The function units are reversibly joined to one another by a connecting element and at least one positioning pin. The two f... | 08/11/2009 |
| 7552719 | Solenoid assembly having slotted stator A solenoid assembly is disclosed. The solenoid assembly has a housing having a cavity disposed therein. The solenoid assembly also has a unitary stator having a plurality of separated portions. The separated portions are held together by at least one lip located on ... | 06/30/2009 |
| 7552718 | Electrical drive arrangement for a fuel injection system An electrical drive arrangement of a fuel injection system comprising a power supply operatively connected to an injector driver stage which, in turn, is operatively connected to at least one fuel injector. The electrical drive arrangement includes a voltage regulat... | 06/30/2009 |
| 7546830 | Injector drive device and injector drive system An injector drive device includes a power supply unit that is supplied with power from a battery mounted in a vehicle and generates a voltage higher than the voltage of the battery, and EDU having a drive unit that is supplied with power from the power supply unit a... | 06/16/2009 |
| 7527040 | Fuel injection performance enhancing controller An auxiliary electronic fuel injection control apparatus for enhancing engine performance includes an isolation circuit connectable to a main control switch having an output voltage pulse and a ground. A pass-through switch is in electrical communication with the is... | 05/05/2009 |
| 7497206 | Method for operating an internal combustion engine With a method for operating an internal combustion engine with a fuel injector (18) that is opened and closed electrically, a booster capacitor (BK) serving to increase the current intensity when the fuel injector (18) is opened, reliable fuel injectio... | 03/03/2009 |
| 7478626 | Method for producing an injector A first module (1) has an injector housing (4) and a lifting actuating drive. A second module (2) has a nozzle body (16), an injection needle (18), and a restoring means. At least one value of at least one characteristic number for... | 01/20/2009 |
| 7467619 | Apparatus and method for accurate detection of locomotive fuel injection pump solenoid closure The invention relates to a system and method for detecting a closing of a solenoid. The system includes a capacitive charge circuit electrically coupled to the solenoid. The capacitive charge circuit conditions the current flow through the solenoid to increase the c... | 12/23/2008 |
| 7438054 | Fuel injector for a direct injection internal combustion engine A fuel injector comprising: an injection valve provided with a mobile needle to regulate the fuel flow; an actuator adapted to shift the needle; an injection nozzle; a supporting body having a tubular shape and displaying a feeding channel; a sealing body provided w... | 10/21/2008 |
| 7424883 | Ultrasonic fuel injector A fuel injector for delivering fuel to an engine in which a housing of the injector has an internal fuel chamber and at least one exhaust port in fluid communication with the fuel chamber. A valve member is moveable relative to the housing between a closed position ... | 09/16/2008 |
| 7422005 | System and method for operating a piezoelectric fuel injector A method of operating a fuel injector including a piezoelectric actuator having a stack of piezoelectric elements, comprises applying a discharge current (IDISCHARGE) to the actuator for a discharge period so to discharge the stack from a first differenti... | 09/09/2008 |
| 7415971 | Control circuit for an actuator In a control circuit for at least one actuator, in particular for a capacitive actuator of an injection system of an internal combustion engine, a control current can be applied to the actuator. The control circuit has an inductor, e.g., having a core and hav... | 08/26/2008 |
| 7401595 | Fuel injection device for internal combustion engine A fuel injection device for an internal combustion engine including: an injector that injects fuel to be supplied to the internal combustion engine; a battery to which a DC converter that charges a capacitor of a capacitor discharge ignition circuit is connected as ... | 07/22/2008 |
| 7383819 | Electromagnetic valve device and fuel injection apparatus with the valve device A compact electromagnetic valve device for fuel injection apparatus for engines is provided with which occurrence of cavitation erosion due to rapid change in pressure in a small gap is prevented without increasing in size. Through holes are drilled in a platy armat... | 06/10/2008 |
| 7377265 | Injector driver and drive method for the same An injector driver and a drive method therefor wherein a reference current signal is generated that is synchronized to an injector valve signal for causing the injector to inject and that has a current increasing tendency substantially equivalent to an injector curr... | 05/27/2008 |
| 7373927 | Method for operating an internal combustion engine A method for operating an internal combustion engine in which a valve needle of a fuel injector is adjusted from a closing position via an intermediate position to an opening position and back again. The adjustment is carried out with the aid of a piezoelectric actu... | 05/20/2008 |
| 7370521 | Method to detect a contaminated fuel injector A method of diagnosing a fuel injector of an engine system as contaminated is provided. The method comprises: recording a first fuel injection quantity; commanding a fuel rail pressure high; recording a second fuel injection quantity while the fuel rail pressure is ... | 05/13/2008 |
