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1. 发明公开

US20240295206A1 FUEL SYSTEM HAVING FUEL INJECTOR BOOT ASSEMBLY WITH AIR GAP STANDOFF PROTRUSIONS 审中-公开
公开(公告)号：US20240295206A1
公开(公告)日：2024-09-05
申请号：US18116418
申请日：2023-03-02
申请人： Caterpillar Inc.
发明人： Kenth I. Svensson
IPC分类号： F02M61/16 , F02M51/06
CPC分类号： F02M61/167 , F02M51/061
摘要： A boot in a boot assembly in a fuel system includes an elongate boot body defining a longitudinal axis and having an inner boot surface. An injector portion of the boot has a window formed therein receiving an electrical connector of a fuel injector. The injector portion also includes a plurality of radially inward standoff protrusions in contact with the fuel injector to maintain an air gap clearance between an inner surface of the boot and the fuel injector.

2. 发明公开

US20240295205A1 FUEL SYSTEM HAVING FUEL INJECTOR BOOT ASSEMBLY WITH INTEGRATED FILTER 审中-公开
公开(公告)号：US20240295205A1
公开(公告)日：2024-09-05
申请号：US18116386
申请日：2023-03-02
申请人： Caterpillar Inc.
发明人： Kenth I. Svensson
IPC分类号： F02M61/16 , F02M51/06
CPC分类号： F02M61/165 , F02M51/061
摘要： A boot in a fuel system includes a boot wall having a window formed therein receiving an electrical connector of a fuel injector, and a filter attached to the boot wall. An air gap is defined between the fuel injector and the boot, and a filtered air flow path extends through the filter to the air gap. The boot may be implemented in an assembly of a fuel injector and a double-walled fuel conduit such as in a fuel system for an internal combustion engine.

3. 发明公开

US20240242867A1 METHOD AND CIRCUITRY FOR CONTROLLING DISCHARGE OF A SOLENOID VALVE 审中-公开
公开(公告)号：US20240242867A1
公开(公告)日：2024-07-18
申请号：US18559837
申请日：2022-05-16
申请人： Scania CV AB
发明人： Jens GUSTAVSSON , Kurre KÄLLKVIST , Joakim SVANTESSON , Erik JANSSON
IPC分类号： H01F7/06 , F02D41/20 , F02M51/06 , F16K31/06 , H01F7/08 , H01F7/16
CPC分类号： H01F7/064 , F02D41/20 , F02M51/061 , F16K31/0675 , H01F7/081 , H01F7/1607 , F02D2041/2051 , F02D2041/2058
摘要： The disclosure proposes a method for controlling discharge of a solenoid valve arranged in a vehicle, wherein the solenoid valve comprises an inductor and a plunger arranged to be moved by the inductor from a hold position to a rest position, whereby the solenoid valve is opened or closed. The method comprises stepwise discharging the inductor by discharging the inductor at a slow decay rate during an operating time period during which a final part of a movement of the plunger from the hold position to the rest position takes place. The method further comprises discharging the inductor at a fast decay rate during at least one other time period, wherein the plunger is stagnant during at least a part of said other time period, wherein the fast decay rate is faster than the slow decay rate.

4. 发明授权

US11703021B2 Fuel injection device 有权
公开(公告)号：US11703021B2
公开(公告)日：2023-07-18
申请号：US17352665
申请日：2021-06-21
申请人： Hitachi Automotive Systems, Ltd.
发明人： Ryo Kusakabe , Motoyuki Abe , Tohru Ishikawa , Noriyuki Maekawa , Masahiro Soma , Takao Miyake , Yasuo Namaizawa
IPC分类号： F02M51/06 , F02M61/16 , F02M51/02 , H01F7/16 , H02K3/04 , F02M47/02 , F02M51/00
CPC分类号： F02M51/061 , F02M51/0614 , F02M51/0664 , F02M51/0685 , F02M61/16 , F02M47/027 , F02M51/00 , F02M51/02 , F02M51/0621 , F02M51/0628 , F02M51/0635 , H01F7/1638 , H01F7/1646 , H02K3/04
摘要： In a fuel injection device, a driving unit structure has a magnetic aperture, in which an inner diameter is gradually enlarged toward the mover side, provided in an inner peripheral surface of the magnetic core. It is possible to reduce magnetic delay time upon valve opening from the supply of the electric current to the coil to the rise of magnetic flux and magnetic delay time upon valve closing from the stoppage of the electric current to the coil to reduction of magnetic flux, by providing a magnetic aperture in the inner peripheral surface of the magnetic core. Thus it is possible to improve the dynamic responsiveness upon valve opening and valve closing.

5. 发明授权

US10634083B2 Drive device for fuel injection device 有权
公开(公告)号：US10634083B2
公开(公告)日：2020-04-28
申请号：US16197152
申请日：2018-11-20
申请人： Hitachi Automotive Systems, Ltd.
发明人： Ryo Kusakabe , Tomoaki Horii , Shingo Kimura , Takaki Itaya , Mitsuru Nagase , Shirou Yamaoka
IPC分类号： F02D41/20 , F02D41/00 , F02D41/38 , F02D41/40 , F02M51/06
CPC分类号： F02D41/20 , F02D41/008 , F02D41/3809 , F02D41/401 , F02D41/402 , F02M51/061 , F02D2041/2003 , F02D2041/2017 , F02D2041/2027 , F02D2041/2051 , F02D2041/2082 , F02D2041/389 , F02D2200/0602 , Y02T10/44
摘要： The objective of the present invention is to correct deviation in the injection amount and changes in the injection timing when the voltage of a high-voltage source for a drive device decreases. This drive device for a fuel injection device is equipped with a function whereby, when the pulse width of the injection pulse is set to an energization time 815 that closes a valve after a drive current has been switched to a maintenance current, the injection pulse width when the voltage of a high-voltage source has decreased is corrected so as to be longer than the injection pulse width when the voltage of the high-voltage source has not decreased, and, when the pulse width of the injection pulse is set to an energization time 804′ that closes the valve before the drive current has been switched to the maintenance current, the absolute value of the amount of correction of the injection pulse width is made smaller than when the injection pulse width is set to the energization time 815 that closes the valve after the drive current has been switched to the maintenance current.

6. 发明授权

US10626835B2 Nozzle plate for fuel injection device 有权
公开(公告)号：US10626835B2
公开(公告)日：2020-04-21
申请号：US15558845
申请日：2016-03-14
申请人： ENPLAS CORPORATION
发明人： Koji Noguchi
IPC分类号： F02M61/18 , F02M61/16 , F02M61/04 , F02M51/06
CPC分类号： F02M61/1833 , F02M51/061 , F02M61/04 , F02M61/162 , F02M61/163 , F02M61/1853
摘要： Fuel flows from first and second fuel guide channels into the swirl chamber and is guided to the nozzle hole while swirling in the swirl chamber in the identical direction. The nozzle hole is divided into an inlet portion near a fuel-inflow end and an outlet portion near a fuel-outflow end. The outlet portion has a flow passage cross-sectional area gradually increasing towards a fuel outflow-side opening end, and includes a curved surface formed by smoothly connecting an inner surface of the nozzle holes at an upstream end side in a fuel flow direction to an inner surface of the nozzle holes at the portion near the fuel-inflow end so as to smoothly and gradually increase the flow passage cross-sectional area. The curved surface ensures further thin film-like flow by expanding a flow of the fuel in the nozzle holes by the Coanda effect.

7. 发明申请

US20190195182A1 FUEL INJECTION VALVE 审中-公开
公开(公告)号：US20190195182A1
公开(公告)日：2019-06-27
申请号：US16293622
申请日：2019-03-05
申请人： HITACHI AUTOMOTIVE SYSTEMS, LTD.
发明人： Takahiro SAITO , Nobuaki KOBAYASHI , Eiji TAMURA
IPC分类号： F02M61/18 , F02M51/06
CPC分类号： F02M61/1806 , F02M51/06 , F02M51/061 , F02M51/0682 , F02M61/1853
摘要： A fuel injection valve includes a valve seat 15b and a valve body 27c that cooperate with each other to open and close a fuel passage, a movable element 27 that has the valve body 27c provided at one end thereof and has a fuel passage formed therein, a valve seat member 15 having the valve seat 15b formed thereon, an upstream-side communication hole 27boa that is located upstream of the flow of fuel and connects the inside and outside of the movable element 27, and a downstream-side communication hole 27bob that is located downstream of the flow of fuel and connects the inside and outside of the movable element, in which a guide section for the valve body 27c, where the valve seat member 15 and the valve body 27c are in sliding contact with each other, is provided downstream of the downstream-side communication hole 27bob and in which a fuel passage 17h for connecting in the center axis direction the upstream side and downstream side of the guide section is provided at the same angular position in the circumferential direction of the movable element 27 as the downstream-side communication hole 27bob. With this arrangement, even if a foreign thing is accidently mixed into the fuel passage during the production process, the foreign thing can be removed with a shorter running-in operation time.

8. 发明申请

US20180340464A1 IGNITION SYSTEM FOR ENGINE HAVING ADAPTIVELY CONTROLLED PRECHAMBER IGNITION DEVICE 审中-公开
公开(公告)号：US20180340464A1
公开(公告)日：2018-11-29
申请号：US15606827
申请日：2017-05-26
申请人： Caterpillar Inc.
发明人： Xinyu Ge
IPC分类号： F02B19/12 , F02B19/10
CPC分类号： F02B19/12 , F02B19/1052 , F02D2200/06 , F02M51/061 , G05B13/021
摘要： An ignition system for an internal combustion engine includes a prechamber ignition device, a fuel admission valve for the prechamber ignition device, and a combustion consistency control mechanism configured to receive data indicative of at least one of a magnitude of a peak pressure in a combustion prechamber of the prechamber ignition device or a timing of the peak pressure in the combustion prechamber. The combustion consistency control mechanism calculates an error based on the data, and outputs a valve opening command to a fuel valve to produce a shot of combustion-initiating gases from the prechamber device, the valve opening command being based on the error.

9. 发明申请

US20180328305A1 CONTROL DEVICE 审中-公开
公开(公告)号：US20180328305A1
公开(公告)日：2018-11-15
申请号：US15775883
申请日：2016-11-29
申请人： DENSO CORPORATION
发明人： Keisuke YANOTO
IPC分类号： F02D41/24 , F02D41/20 , F02D41/30
CPC分类号： F02D41/2467 , F02D41/20 , F02D41/3005 , F02D41/34 , F02D2041/2055 , F02D2041/2058 , F02D2200/0614 , F02M51/00 , F02M51/06 , F02M51/061 , F02M61/10
摘要： A control device that is to output a driving signal to a fuel injector includes a full-lifting valve-closing response acquisition unit to acquire a full-lifting valve-closing profile indicating a valve-closing behavior of the fuel injector from a full-lifting state of a valve body constituting the fuel injector, based on a behavior of an electric signal from the full-lifting state to a closing state of the valve body, and a valve-opening response estimation unit to estimate a valve-opening profile indicating a valve-opening behavior when a valve-opening driving signal is input to the fuel injector, based on at least the full-lifting valve-closing profile.

10. 发明授权

US10072603B2 Control device for internal combustion engine 有权
公开(公告)号：US10072603B2
公开(公告)日：2018-09-11
申请号：US15325205
申请日：2015-07-07
申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA
发明人： Susumu Hashimoto , Motonari Yarino
IPC分类号： F02D41/40 , F02D41/26 , F02D41/38 , F02D41/30 , F02P5/04 , F02B23/10
CPC分类号： F02D41/40 , F02B23/101 , F02B2023/102 , F02B2023/103 , F02D37/02 , F02D39/06 , F02D41/047 , F02D41/26 , F02D41/3023 , F02D41/3035 , F02D41/3809 , F02D41/402 , F02D2041/389 , F02D2200/021 , F02D2200/0602 , F02D2200/063 , F02M45/08 , F02M45/12 , F02M51/061 , F02M61/1833 , F02P5/045 , Y02T10/125 , Y02T10/44
摘要： The invention relates to a control device applied to a cylinder injection type of an internal combustion engine (10). The control device control a disperse parameter for changing a degree of a spread of the fuel spray injected from the injector (20) such that the maximum degree of the spread of the fuel spray under a state where an amount of the fuel adhering to the spark generation part (31a) of the spark plug (30) at the ignition timing corresponds to a first amount, is smaller than the maximum degree of the spread of the fuel spray under a state where the amount of the fuel adhering to the spark generation part at the ignition timing corresponds to a second amount smaller than said first amount.

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