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    • 5. 发明授权
    • Method and apparatus for diagnosing valve lifter malfunction in a lift on demand system
    • 用于诊断升降机升降机故障的方法和装置
    • US07246583B2
    • 2007-07-24
    • US11238720
    • 2005-09-29
    • Kenneth J. CinpinskiVimesh M. Patel
    • Kenneth J. CinpinskiVimesh M. Patel
    • F01L1/02
    • F01L1/3442F01L1/022F01L2001/0476F01L2001/0537F01L2001/34433F01L2001/34496F01L2800/11F01L2820/043
    • A method for diagnosing malfunctions of switching valve lifters includes sensing variations in pressure of trapped oil in a drive chamber of a hydraulic camshaft drive, such as a cam phaser, comparing peak oil pressure readings in the drive chamber resulting from the increased torque of opening the valves of various cylinders of an engine and identifying cylinders having lower than normal valve opening pressure readings, indicating failure of an associated valve lifter to properly actuate a valve of the cylinder. Apparatus for indicating such malfunctions could include a cam phaser with pressure chamber, a pressure sensor connected to indicate pressure variations in the chamber; and a pressure indicator connected to the sensor and adapted to indicate actual pressure variations for comparison with normal variations to identify low pressure peaks indicating malfunction of a switching lifter. A computer could be used to receive and act upon the malfunction indications.
    • 用于诊断切换阀提升器故障的方法包括检测液压凸轮轴驱动器的驱动室中的捕获油的压力变化,例如凸轮相位器,比较驱动室中的峰值油压读数,其由打开 发动机的各种气缸的阀门和识别低于正常阀打开压力读数的气缸,指示相关联的气门挺杆正常致动气缸的阀门的故障。 用于指示这种故障的装置可以包括具有压力室的凸轮相位器,连接以指示腔室中的压力变化的压力传感器; 以及压力指示器,其连接到所述传感器并且适于指示实际压力变化,以与正常变化进行比较,以识别指示开关升降器故障的低压峰值。 计算机可用于接收故障指示并对其进行操作。
    • 7. 发明授权
    • Compact lash adjuster feed channel apparatus
    • 紧凑型间隙调节器进给通道装置
    • US07464677B2
    • 2008-12-16
    • US11434381
    • 2006-05-15
    • Timothy L. NealVimesh M. PatelCraig D. Marriott
    • Timothy L. NealVimesh M. PatelCraig D. Marriott
    • F01L1/14
    • F01L13/0036F01L1/14F01L1/185F01L1/24F01L2001/0537F01L2001/34423F01L2001/34433F01L2105/00F01L2820/033
    • The apparatus of the present invention provides a lash adjuster feed channel for an engine assembly. The engine assembly includes first and second sets of hydraulic lash adjusters responsive to a variation in hydraulic fluid pressure to cause a variation in lift of first and second sets of engine valves respectively operatively connected thereto. The cylinder head defines a first feed passage in fluid communication with the first set of hydraulic lash adjusters, and a second feed passage in fluid communication with the second set of hydraulic lash adjusters. The valve lift of the first set of engine valves is independently variable by controlling the transfer of hydraulic pressure in the first feed passage, and the valve lift of the second set of engine valves is independently variable by controlling the transfer of hydraulic pressure in the second feed passage. A corresponding method is also provided.
    • 本发明的装置提供了一种用于发动机组件的间隙调节器进给通道。 发动机组件包括响应于液压流体压力变化的第一和第二组液压间隙调节器,以引起分别可操作地连接到其上的第一组和第二组发动机气门的升力变化。 气缸盖限定与第一组液压间隙调节器流体连通的第一进料通道和与第二组液压间隙调节器流体连通的第二进料通道。 第一组发动机气门的气门升程通过控制第一进给通道中的液压传递而独立地变化,并且第二组发动机气门的气门升程通过控制第二组发动机气门中的液压传递而独立地变化 饲料通道。 还提供了相应的方法。
    • 8. 发明授权
    • Valvetrain with two-step switchable rocker and deactivating stationary lash adjuster
    • 具有两步可切换摇杆和停用固定间隙调节器的Valvetrain
    • US07225776B2
    • 2007-06-05
    • US10990936
    • 2004-11-17
    • Burak A. GecimIoan ManoleVimesh M. Patel
    • Burak A. GecimIoan ManoleVimesh M. Patel
    • F01L1/18
    • F01L13/0031F01L13/0005
    • The invention provides a valvetrain configuration in an internal combustion engine in which a plurality of two-step rockers enable the engine poppet valves to switch between two lift profiles. In addition, a lost-motion stationary lash adjuster enables the deactivation of the engine poppet valve. The integration of a two-step rocker with a deactivating stationary lash adjuster yields a better control of the combustion process, under different engine operating conditions than what is achievable with either one of these actuators acting alone. Preferably, the locking and unlocking of the two-step rocker arm and deactivating stationary lash adjuster is controlled by two on/off hydraulic valves in a hydraulic circuit, and a piloted check valve prevents hard landings between stationary and moving components within the stationary hydraulic lash adjuster.
    • 本发明在内燃机中提供了一种阀门结构,其中多个两级摇臂使得发动机提升阀能够在两个提升曲线之间切换。 此外,迷失式静止间隙调节器能够使发动机提升阀失效。 在不同的发动机操作条件下,两步摇臂与停用的间隙调节器的集成可以使得燃烧过程更好地控制,而不仅仅是这些致动器中的任何一个单独执行。 优选地,两级摇臂的锁定和解锁以及停用的间隙调节器由液压回路中的两个开/关液压阀来控制,并且导向止回阀防止固定液压间隙内的固定和移动部件之间的硬着陆 调节器