| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 239096000 | INJECTION NOZZLE OPENED BY RELIEVING SUPPLY (E.G., ACCUMULATOR TYPE) | 8 |
| 20090108093 | FUEL INJECTOR - The invention relates to a fuel injector having an injector housing which has a high-pressure fuel connection which is connected outside the injector housing to a central high-pressure fuel source and inside the injector housing to a pressure space. From the fuel injector highly pressurized fuel is injected into a combustion chamber of an internal combustion engine as a function of the pressure in a control space when a nozzle needle opens In order to provide a fuel injector which can be manufactured inexpensively, the pressure in the control space is controlled directly by a magnetic actuator. | 04-30-2009 |
| 20090212126 | Fuel Injector with Boosted Needle Closure - Fuel injectors with boosted needle control providing controlled and rapid needle closure. Boost and drive pistons are provided for hydraulic actuation to controllably close the needle, with the boost piston reaching a mechanical stop before the needle reaches the closed position, with the drive piston alone providing adequate hydraulic force to hold the needle closed. In a preferred embodiment, fuel from the intensifier is coupled to the top of the boost and drive pistons to close the needle, and controllably coupled to the bottom of the boost and drive pistons to allow pressure in the needle chamber to open the needle. Apparatus for control of fuel pressure to the bottom of the boost and drive pistons is disclosed. | 08-27-2009 |
| 20100012745 | Fuel Injectors with Intensified Fuel Storage and Methods of Operating an Engine Therewith - Fuel injectors with intensified fuel storage and methods of operating an engine therewith. At least one storage cavity is provided in the intensifier type fuel injector, with a check valve between the intensifier and the needle chamber and storage cavity preventing loss of injection pressure while the intensifier plunger cylinder is refilling with fuel. This provides very efficient injector operation, particularly at low engine loads, by eliminating the wasted energy of compressing, venting and recompressing fuel for injection. Various injector designs and methods of operating the same in an engine are disclosed. | 01-21-2010 |
| 20110006131 | CONTROL VALVE STRUCTURE OF ACCUMULATOR-TYPE FUEL INJECTION UNIT - Provided is the structure of a control valve of accumulator fuel injection equipment wherein an adverse effect by bounce can be reduced by a low-cost means without requiring any special device in the control valve structure of accumulator fuel injection equipment. The control valve structure of accumulator fuel injection equipment is characterized in that the cross-sectional shape at the distal end of a control valve ( | 01-13-2011 |
| 20150097049 | Decoupled Needle Control Assembly - An assembly for a fuel injector that includes a piston that is decoupled from the needle of a needle valve. The piston is slidingly positioned in a disk bore. The portion of needle in the disk bore is smaller than the disk bore so as to prevent the disk bore from interfering with movement of the needle between seated and unseated positions. During periods of operation, the upper surface of the piston is engaged by a control volume of fuel that pushes the needle toward a seated position, while the needle pushes in an opposing direction against a lower surface of the piston. The surface area of the piston acted on by the control volume is larger than the upper portion of the needle that is typically acted upon by the control volume, thereby providing a larger force on the piston that keeps the needle in a seated. | 04-09-2015 |
| 20160003204 | FUEL INJECTOR - Exemplary fuel injectors for use in fuel injection devices are disclosed. An injector may have a control chamber, which can be selectively relieved of pressure by means of a pilot valve in order to control a nozzle needle stroke of an axially displaceable nozzle needle of the injector. The fuel injector may have at least one nozzle on a first end, and the control chamber on a second end of the nozzle needle. The control chamber may be sub-divided by a throttle plate accommodated therein into a first chamber and a second chamber, with the second chamber being positioned closer to the nozzle, and the two chambers communicating with each other via the throttle plate. First and second resilient elements may be accommodated in a pre-stressed manner against the throttle plate in the first chamber and in the second chamber, respectively. | 01-07-2016 |
| 20160017852 | Control Valve Assembly And Fuel Injector Incorporating A Control Valve Assembly - A control valve assembly for controlling fuel pressure in a control chamber of a fuel injector. The control valve assembly comprising a valve member arranged in a bore provided in a valve housing, at least one of the valve member and the valve housing being moveable with respect to the other, wherein the valve member comprises a fuel-receiving cavity arranged to receive fuel that distorts at least a portion of the valve member so as to increase an external dimension thereof. | 01-21-2016 |
| 20160040619 | ELECTRONICALLY CONTROLLED FUEL INJECTION VALVE - An electronically controlled fuel injection valve can control the time to inject fuel and the amount of fuel to be injected in response to a control signal independently from the operating condition of an engine unlike a traditional mechanical fuel injection valve. The electronically controlled fuel injection valve employs a control method for fuel injection that increases the force of lifting up a cutoff needle of an injection controller by delivering high-pressure fuel to a lower pressure chamber via a control needle, thereby rapidly controlling fuel injection, has a simple structure making it easy to assemble, replace and precisely machine parts, and has a simple flow path structure which facilitates fabrication. | 02-11-2016 |
