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公开(公告)号：US20240151199A1
公开(公告)日：2024-05-09
申请号：US18281013
申请日：2022-02-02
申请人： Hitachi Astemo, Ltd.
发明人： Takatoshi IIZUKA , Takao MIYAKE , Masashi SUGAYA
CPC分类号： F02M61/1806 , F02M45/08
摘要： A fuel injection device includes a nozzle holder; a fixed core; an anchor; and a valve member. The valve member has a plunger rod and a spacer. The plunger rod is provided with a shaft portion, and an engaging portion that engages with the anchor during a valve opening operation. The spacer has an accommodating portion in which the engaging portion is accommodated and forms a predetermined gap between the engaging portion and the anchor when the valve is closed. Further, the accommodating portion and the engaging portion are in line contact or point contact.
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公开(公告)号：US10767610B2
公开(公告)日：2020-09-08
申请号：US16107199
申请日：2018-08-21
申请人： Caterpillar Inc.
发明人： Jonathan W Anders , Bobby John , Robert Campion
摘要： A liquid fuel injector for a fuel system in an internal combustion engine includes two injection control valves for controlling two outlet checks. A common nozzle supply cavity is fluidly connected to an inlet passage and supplies each of the two sets of nozzle outlets opened and closed by the outlet checks. A first nozzle outlet set forms a narrower spray angle and has a first combination of outlet number and outlet size, and a second nozzle outlet set forms a wider spray angle and has a second combination of outlet number and outlet size. The first nozzle outlet set has a greater steady flow than the second nozzle outlet set.
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公开(公告)号：US10337448B2
公开(公告)日：2019-07-02
申请号：US14978801
申请日：2015-12-22
发明人： Xiaogang Zhang
摘要： Methods and systems are provided for moving an injector needle of a fuel injector assembly from a first position to a second position to provide a first fuel injection at the first position, and moving the needle from the second position to the third position to provide a second fuel injection at the third position, and moving the needle back to the first position via the second position, and providing a third fuel injection at the second position. In this way, three fuel injections may be performed during a single actuation cycle of the injector during a single combustion cycle.
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公开(公告)号：US20190178172A1
公开(公告)日：2019-06-13
申请号：US16275555
申请日：2019-02-14
申请人： WESTPORT POWER INC.
IPC分类号： F02D19/06 , F02M45/08 , F02M47/02 , F02B7/02 , F02D41/00 , F02D41/38 , F02M43/04 , F02M61/04
摘要： Hydraulically actuated gaseous fuel injectors required a relatively small pressure bias between hydraulic fluid and gaseous fuel to be able to open and to reduce hydraulic fluid contamination of the gaseous fuel. An improved hydraulically actuated gaseous fuel injector includes an injection valve in fluid communication with a gaseous fuel inlet and includes a valve member reciprocatable within a fuel injector body between a closed position and an open position. There is a lift chamber in fluid communication with a hydraulic fluid inlet such that hydraulic fluid pressure in the lift chamber contributes to an opening force applied to the valve member. A control chamber is in fluid communication with the hydraulic fluid inlet such that hydraulic fluid pressure in the control chamber contributes to a closing force applied to the valve member. A control valve is operable to reduce hydraulic fluid pressure in the control chamber such that the opening force is greater than the closing force and the valve member moves to the open position.
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公开(公告)号：US20190078542A1
公开(公告)日：2019-03-14
申请号：US15762769
申请日：2016-07-25
申请人： Robert Bosch GmbH
发明人： Jochen Wessner , Martin Katz
IPC分类号： F02M45/08
摘要： The invention relates to a device for metering two different liquid or gaseous fuels, comprising a nozzle element (4) in which a first pressure chamber (6) that can be filled with a first fuel is formed, wherein an outer nozzle needle (10) is received in the pressure chamber in a longitudinally movable manner. The outer nozzle needle (10) is equipped with a second pressure chamber (12) which can be filled with a second fuel and in which an inner nozzle needle (15) is arranged in a longitudinally movable manner, said inner nozzle needle interacting with an inner nozzle seal (16) formed in the outer nozzle needle (10) in older to open and close at least one inner injection opening (17). Furthermore, at least one outer injection opening (13) is provided which can be connected to the first pressure chamber (6), the at least one outer injection opening (13) being formed in the outer nozzle needle (10).
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公开(公告)号：US10215082B2
公开(公告)日：2019-02-26
申请号：US15115222
申请日：2015-01-12
发明人： Stéphane Richard , Lionel Martinez , Olivier Laget
IPC分类号： F02B23/06 , F02M61/18 , F02M45/08 , F02B9/02 , F02B17/00 , F02F1/24 , F02F3/26 , F02M61/14 , F02B1/12
摘要： The present invention is a compression-ignition direct-injection internal-combustion engine comprising at least a cylinder (10), a cylinder head (12) carrying fuel injection means (14), a piston (16) sliding in the cylinder, a combustion chamber (34) limited on one side by an upper face (44) of the piston comprising a projection (48) extending in the direction of the cylinder head and located in a center of a concave bowl (46). The engine comprises injection projecting fuel in at least two fuel jet sheets. One of the zones comprises a toroidal volume (64) having center B with a flat bottom (56) into which fuel jets (40) of the lower sheet are injected so that an axis C1 of the lower sheet jets is contained between center B and projection (48).
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公开(公告)号：US20180163681A1
公开(公告)日：2018-06-14
申请号：US15893211
申请日：2018-02-09
申请人： DENSO CORPORATION
发明人： Haruki Suzuki , Akinori Harada
CPC分类号： F02M51/0685 , A01G25/023 , F02M45/08 , F02M45/083 , F02M51/0653 , F02M61/10 , F02M61/168 , F02M61/18 , F02M61/1853
摘要： A first spring axially urges a needle valve toward an injection hole. A second spring axially urges a movable core toward a stationary core with an urging force that is smaller than an urging force of the first spring. A stopper is placed on one axial side of the movable core where the injection hole is located. The stopper limits movement of the movable core toward the injection hole to limit an amount of compression of the second spring.
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公开(公告)号：US20170298882A1
公开(公告)日：2017-10-19
申请号：US15640838
申请日：2017-07-03
CPC分类号： F02M51/0657 , F02D41/20 , F02M45/00 , F02M45/08 , F02M51/061 , F02M51/0625 , F02M51/066 , F02M61/04 , F02M61/10 , F02M61/20 , F02M2200/08
摘要： A fuel injection valve includes a valve body, a coil, an inner fixed iron core that is arranged on an inner peripheral side of the coil, and an outer fixed iron core that is arranged on an outer peripheral side of the coil. The fuel injection valve also includes a movable element that is configured to be attracted to the inner fixed iron core and the outer fixed iron core, wherein the movable element is configured to be separable from the valve body and is configured to move the valve body.
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公开(公告)号：US09624845B2
公开(公告)日：2017-04-18
申请号：US14604091
申请日：2015-01-23
申请人： Caterpillar Inc.
发明人： Hoisan Kim , Mark F. Sommars , Xiangdong Ding
IPC分类号： F02D41/30 , F02D19/06 , F02D19/10 , F02M43/04 , F02M45/08 , F02M47/02 , F02M63/02 , F02M51/06
CPC分类号： F02D19/0615 , F02D19/0684 , F02D19/0694 , F02D19/10 , F02M43/04 , F02M45/086 , F02M47/027 , F02M51/06 , F02M51/0625 , F02M63/029 , F02M2200/44 , F02M2200/46 , Y02T10/36
摘要： A dual fuel injector may be used to inject 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 and a second coil that share a common centerline. The dual solenoid actuator has a non-injection configuration at which the first armature is at an un-energized position and the second armature is at an un-energized position. The 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 and the second armature is at the un-energized position.
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公开(公告)号：US09506434B2
公开(公告)日：2016-11-29
申请号：US13597924
申请日：2012-08-29
申请人： Dana R. Coldren
发明人： Dana R. Coldren
CPC分类号： F02M43/04 , F02M45/086 , F02M61/045 , F02M61/1826
摘要： A fuel injector includes first and second check valve members that open and close first and second nozzle outlet sets, respectively, to inject two fuels that differ in at least one of chemical identity, pressure and molecular state. The first check valve member defines a through passage, includes a closing hydraulic surface exposed to fluid pressure in the first control chamber, and moves into and out of contact with a first seat on an injector body. The second check valve member includes a closing hydraulic surface exposed to fluid pressure in a second control chamber, and moves into and out of contact with a second seat located on the first check valve member. A control valve member is movable between first and second positions that respectively block and allow fluid communication between the first and second control chambers and a drain outlet.
摘要翻译： 燃料喷射器包括第一和第二止回阀构件，其分别打开和关闭第一和第二喷嘴出口组，以注入在化学特征，压力和分子状态中的至少一个方面不同的两种燃料。 第一止回阀构件限定了通过通道，包括暴露于第一控制室中的流体压力的关闭液压表面，并且进入和离开与喷射器主体上的第一座接触。 第二止回阀构件包括在第二控制室中暴露于流体压力的关闭液压表面，并且移动到位于第一止回阀构件上的第二阀座和与其脱离接触。 控制阀构件可在分别阻塞并允许第一和第二控制室与排水出口之间的流体连通的第一和第二位置之间移动。
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