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公开(公告)号：US06550433B2
公开(公告)日：2003-04-22
申请号：US10176709
申请日：2002-06-24
IPC分类号： F01L134
摘要： The present invention provides a hydraulic actuator for operating an engine valve, which includes a means for controlling the seating velocity of the valve. The design allows for free, unrestricted movement of the actuator piston during opening of the engine valve, and an unrestricted return of the piston and valve until the valve is within a predetermined distance of the valve seat. Once within this predetermined range, the return velocity of the actuator piston and engine valve are limited by the rate at which a fluid may escape through a restriction. The restriction is calibrated to provide the desired maximum valve seating velocity. The invention also provides for automatic lash adjustment.
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2.发明授权System for combination compression release braking and exhaust gas recirculation 有权用于组合压缩释放制动和废气再循环的系统公开(公告)号：US06189504B1
公开(公告)日：2001-02-20
申请号：US09198522
申请日：1998-11-24
IPC分类号： F02D1304
摘要： An engine valve actuation system is disclosed, which is capable providing compression release engine braking in combination with exhaust gas recirculation while maintaining main exhaust and main intake valve events of constant magnitude during both positive power and engine braking. The system is also capable of providing a constant level of desired overlap between main exhaust and main intake valve events during both positive power and engine braking. The system may provide the foregoing functions by using first and second valve actuation subsystems to provide the full spectrum of exhaust valve motions. Both the first and second subsystems may receive an input motion from a valve train element. The first subsystem operates only when the engine braking system is enabled. The second subsystem operates both during positive power and during engine braking. When engine braking is enabled, the first and second subsystems work together to provide main exhaust, compression release and exhaust gas recirculation events. When the engine is in positive power mode, the second subsystem works alone, and is limited to providing main exhaust events. Methods of engine valve actuation are also disclosed.
摘要翻译： 公开了一种发动机气门致动系统，其能够在排气再循环的同时提供压缩释放发动机制动，同时在正功率和发动机制动期间保持主排气和主进气门事件恒定的大小。 该系统还能够在正功率和发动机制动期间在主排气和主进气门事件之间提供恒定水平的期望重叠。 该系统可以通过使用第一和第二阀致动子系统提供上述功能来提供全谱排气门运动。 第一和第二子系统都可以接收来自气门机构元件的输入运动。 第一个子系统仅在发动机制动系统启用时才起作用。 第二个子系统在正功率和发动机制动期间都运行。 当启动发动机制动时，第一和第二子系统一起工作以提供主排气，压缩释放和废气再循环事件。 当发动机处于正功率模式时，第二个子系统单独工作，并且限于提供主排气事件。 还公开了发动机气门致动的方法。
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公开(公告)号：US4811715A
公开(公告)日：1989-03-14
申请号：US115845
申请日：1987-11-02
CPC分类号： F02M59/22 , F02M45/06 , F02M57/02 , F02M57/023 , F02M59/366
摘要： An electronic unit injector employs an expandable chamber which expands as pressure in the injector increases between a pair of threshold pressures. The expansion of the chamber results in a two-phase rate of injection of the injector whereby the initial injection rate is significantly lower than the second injection rate. In one embodiment, the expandable chamber is formed by a pin which is displaceable in a cap mounted to the injector body. The pin bottoms against the cap to define the phase transition.
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4.发明授权公开(公告)号：US07600497B2
公开(公告)日：2009-10-13
申请号：US11524292
申请日：2006-09-21
IPC分类号： F01L1/18
CPC分类号： F01L13/065 , F01L1/185 , F01L9/02 , F01L2001/467 , F01L2800/10
摘要： An engine valve actuation system for an internal combustion engine is disclosed. The valve actuation system may include a longitudinally extending link member pivotally attached to an engine member. A longitudinally extending finger follower may be pivotally attached to the link member. The finger follower may include first and second contact surfaces spaced longitudinally from each other. A lost motion piston may contact the first contact surface of the finger follower and an engine valve assembly may contact the second contact surface of the finger follower. A means for receiving valve actuation motion, such as a cam follower, may be incorporated into the finger follower. A valve seating device may contact a third contact surface located on the link member, and a biasing spring may contact a fourth contact surface on the finger follower.
摘要翻译： 公开了一种用于内燃机的发动机气门致动系统。 阀致动系统可以包括可枢转地附接到发动机构件的纵向延伸的连杆构件。 纵向延伸的手指随动件可以枢转地附接到连杆构件。 手指从动件可以包括彼此纵向间隔开的第一和第二接触表面。 迷失运动的活塞可以接触手指从动件的第一接触表面，并且发动机气门组件可以接触手指从动件的第二接触表面。 用于接收阀致动运动的装置，例如凸轮从动件，可以并入到手指随动件中。 阀座装置可以接触位于连杆构件上的第三接触表面，并且偏置弹簧可接触手指从动件上的第四接触表面。
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公开(公告)号：US06883492B2
公开(公告)日：2005-04-26
申请号：US10408254
申请日：2003-04-08
IPC分类号： F01L1/08 , F01L1/18 , F01L1/26 , F01L1/34 , F01L9/02 , F01L13/00 , F01L13/06 , F01L13/08 , F02D13/02 , F02D13/04 , F02D13/06 , F02M25/07 , F01L1/245
CPC分类号： F02D13/0207 , F01L1/08 , F01L1/181 , F01L1/26 , F01L1/267 , F01L1/34 , F01L9/02 , F01L9/021 , F01L13/0005 , F01L13/0015 , F01L13/06 , F01L13/065 , F01L13/085 , F01L2001/34446 , F01L2105/00 , F01L2800/10 , F02D13/0253 , F02D13/0261 , F02D13/0273 , F02D13/0276 , F02D13/04 , F02D13/06 , F02M26/01
摘要： Lost motion systems and methods for providing engine valves with variable valve actuation for engine valve events are disclosed. The system may include a master piston hydraulically linked to a slave piston, and a dedicated cam operatively connected to the master piston. The slave piston may be disposed substantially perpendicular to the master piston in a common housing. The slave piston is adapted to actuate one or more engine valves. The slave piston may incorporate an optional valve seating assembly into its upper end. A trigger valve may be operatively connected to the master-slave hydraulic circuit to selectively release and add hydraulic fluid to the circuit.
摘要翻译： 公开了用于为发动机气门事件提供具有可变气门致动的发动机气门的失速运动系统和方法。 该系统可以包括液压连接到从动活塞的主活塞和可操作地连接到主活塞的专用凸轮。 从动活塞可以在公共壳体中基本上垂直于主活塞设置。 从动活塞适于致动一个或多个发动机气门。 从动活塞可以将可选的阀座组件并入其上端。 触发阀可以可操作地连接到主从液压回路，以选择性地释放并将液压流体添加到回路中。
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公开(公告)号：US07882810B2
公开(公告)日：2011-02-08
申请号：US11450286
申请日：2006-06-12
IPC分类号： F01L9/02
CPC分类号： F01L1/047 , F01L1/053 , F01L1/08 , F01L1/185 , F01L1/2405 , F01L1/267 , F01L13/0005 , F01L13/085 , F01L2001/34446 , F01L2820/01 , Y10T74/2107
摘要： A lost motion engine valve actuation system and method of actuating an engine valve are disclosed. The system may comprise a valve train element, a pivoting lever, a control piston, and a hydraulic circuit. The pivoting lever may include a first end for contacting the control piston, a second end for transmitting motion to a valve stem and a means for contacting a valve train element. The amount of lost motion provided by the system may be selected by varying the position of the control piston relative to the pivoting lever. Variation of the control piston position may be carried out by placing the control piston in hydraulic communication with a control trigger valve and one or more accumulators. Actuation of the trigger valve releases hydraulic fluid allowing for adjustment of the control piston position. Means for limiting valve seating velocity, filling the hydraulic circuit upon engine start up, and mechanically locking the control piston/lever for a fixed level of valve actuation are also disclosed.
摘要翻译： 公开了一种失速发动机气门致动系统和致动发动机气门的方法。 该系统可以包括气门机构元件，枢转杆，控制活塞和液压回路。 枢转杆可以包括用于接触控制活塞的第一端，用于将运动传递到阀杆的第二端和用于接触气门机构元件的装置。 可以通过改变控制活塞相对于枢转杆的位置来选择由系统提供的空动量。 可以通过将控制活塞与控制触发阀和一个或多个蓄能器液压连接来实现控制活塞位置的变化。 触发阀的启动释放液压流体，允许调节控制活塞位置。 还公开了用于限制阀座速度，在发动机起动时填充液压回路以及将控制活塞/杆机械地锁定在固定水平的阀致动的装置。
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7.发明授权公开(公告)号：US07484483B2
公开(公告)日：2009-02-03
申请号：US11189814
申请日：2005-07-27
IPC分类号： F01L1/34
CPC分类号： F02D13/0215 , F01L1/08 , F01L1/146 , F01L1/181 , F01L1/20 , F01L1/26 , F01L1/267 , F01L1/34 , F01L9/02 , F01L9/021 , F01L9/023 , F01L13/0015 , F01L13/0031 , F01L13/06 , F01L13/085 , F01L2105/00 , F01L2800/10 , F02D9/02 , F02D9/04 , F02D9/06 , F02D13/0207 , F02D13/0253 , F02D13/0269 , F02M26/01 , F02M26/59 , Y02T10/142
摘要： A system and method for actuating one or more engine valves is provided. In particular, systems and methods for providing variable valve actuation to improve engine performance are provided. Embodiments of the present invention may be used in conjunction with positive power, engine braking, and/or exhaust gas recirculation operation of an internal combustion engine. In one embodiment, the system comprises: a valve train element; a housing disposed intermediate the valve train element and the engine valve; an outer piston slidably disposed in a bore formed in the housing, the outer piston having a cavity formed therein; an inner piston slidably disposed in the outer piston cavity; and a valve in communication with the outer piston cavity, the valve having more than one position, wherein the position of the valve determines the timing of the engine valve event.
摘要翻译： 提供了用于致动一个或多个发动机气门的系统和方法。 特别地，提供了用于提供可变气门致动以改善发动机性能的系统和方法。 本发明的实施例可以与内燃机的正功率，发动机制动和/或废气再循环操作结合使用。 在一个实施例中，该系统包括：气门机构元件; 设置在所述气门机构元件和所述发动机气门之间的壳体; 外部活塞，其可滑动地设置在形成在所述壳体中的孔中，所述外部活塞具有形成在其中的空腔; 内活塞，其可滑动地设置在所述外活塞腔中; 以及与所述外活塞腔连通的阀，所述阀具有多于一个位置，其中所述阀的位置确定所述发动机气门事件的定时。
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8.发明申请公开(公告)号：US20080072853A1
公开(公告)日：2008-03-27
申请号：US11524292
申请日：2006-09-21
CPC分类号： F01L13/065 , F01L1/185 , F01L9/02 , F01L2001/467 , F01L2800/10
摘要： An engine valve actuation system for an internal combustion engine is disclosed. The valve actuation system may include a longitudinally extending link member pivotally attached to an engine member. A longitudinally extending finger follower may be pivotally attached to the link member. The finger follower may include first and second contact surfaces spaced longitudinally from each other. A lost motion piston may contact the first contact surface of the finger follower and an engine valve assembly may contact the second contact surface of the finger follower. A means for receiving valve actuation motion, such as a cam follower, may be incorporated into the finger follower. A valve seating device may contact a third contact surface located on the link member, and a biasing spring may contact a fourth contact surface on the finger follower.
摘要翻译： 公开了一种用于内燃机的发动机气门致动系统。 阀致动系统可以包括可枢转地附接到发动机构件的纵向延伸的连杆构件。 纵向延伸的手指随动件可以枢转地附接到连杆构件。 手指从动件可以包括彼此纵向间隔开的第一和第二接触表面。 迷失运动的活塞可以接触手指从动件的第一接触表面，并且发动机气门组件可以接触手指从动件的第二接触表面。 用于接收阀致动运动的装置，例如凸轮从动件，可以并入到手指随动件中。 阀座装置可以接触位于连杆构件上的第三接触表面，并且偏置弹簧可接触手指从动件上的第四接触表面。
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公开(公告)号：US5852997A
公开(公告)日：1998-12-29
申请号：US859158
申请日：1997-05-20
CPC分类号： F02M57/026 , F02M45/04 , F02M57/025 , F02M59/105 , F02M63/0225
摘要： An injector for a common rail fuel injection system employs a solenoid operated valve configuration which functions to control the amount of filling by regulating the start of filling and the end of filling between the injection events. In some embodiments, a three-way solenoid valve is employed. The start of injection is controlled by a control piston. An intensifier piston is employed to increase the injection pressure. A pilot piston assembly may also be employed to regulate the shape of the injection.
摘要翻译： 用于共轨燃料喷射系统的喷射器采用螺线管操作阀结构，其功能是通过调节灌注开始和注射事件之间的填充结束来控制填充量。 在一些实施例中，采用三通电磁阀。 注射开始由控制活塞控制。 采用增压活塞来提高注射压力。 也可以使用先导活塞组件来调节注射的形状。
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公开(公告)号：US4266728A
公开(公告)日：1981-05-12
申请号：US972517
申请日：1978-12-22
摘要： A fuel injection nozzle and holder assembly of conventional construction is made leakless by eliminating the leakoff passages from the spring chamber. An unreasonable buildup of leakage fuel pressure in the spring chamber is prevented by relieving the pressure in the fuel delivery passages between injection intervals to permit leakage from the spring chamber and a stabilization of the spring pressure. A continuously open passage is provided between the spring chamber and the valve bore to prevent a sealing of the spring chamber by the nozzle valve during the injection interval and thus provide a predictable spring chamber pressure augmenting the nozzle closing force of the spring.
摘要翻译： 通过消除来自弹簧室的泄漏通道，将常规结构的燃料喷射喷嘴和保持器组件制成无泄漏。 通过在喷射间隔之间减小燃料输送通道中的压力来防止弹簧室中的泄漏燃料压力的不合理积累，以允许从弹簧室泄漏和弹簧压力稳定。 在弹簧室和阀孔之间提供连续打开的通道，以防止喷射阀在喷射间隔期间由喷嘴阀密封弹簧室，从而提供可预测的弹簧室压力，从而增加弹簧的喷嘴关闭力。
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