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    • 1. 发明授权
    • Variable valve operating system for internal combustion engine
    • 内燃机变阀操作系统
    • US06877466B2
    • 2005-04-12
    • US10780656
    • 2004-02-19
    • Shigeki ShindouMasaki ToriumiYusuke Takagi
    • Shigeki ShindouMasaki ToriumiYusuke Takagi
    • F01L1/34F01L13/00F02B75/22F02D13/02
    • F01L13/0036F01L1/024F01L1/34F01L2001/0537F01L2800/00F02B75/22
    • A variable valve operating system for a two-bank engine includes a variable valve-lift and working-angle control mechanism changing at least one of a valve lift and a working angle of each of engine valves arranged in each of cylinder banks, and two variable valve timing control mechanisms provided for each of the banks for changing valve timings independently of each other. A control unit responds a failure in one of the variable valve timing control mechanisms for failsafe purposes. The control unit includes a failsafe section capable of executing a failsafe operating mode in which at least one of the valve lift and the working angle of each of engine valves is increasingly compensated for by the variable valve-lift and working-angle control mechanism, when the one variable valve timing control mechanism is failed.
    • 用于双排发动机的可变气门操作系统包括可变气门升程和工作角度控制机构,其改变布置在每个气缸组中的每个发动机气门的气门升程和工作角度中的至少一个, 为每个组提供的气门正时控制机构用于彼此独立地改变气门正时。 控制单元在故障安全目的的可变气门正时控制机构之一中作出故障。 控制单元包括能够执行故障保护操作模式的故障保护部分,其中通过可变气门升程和工作角度控制机构来逐渐补偿每个发动机气门的气门升程和工作角度中的至少一个, 一个可变气门正时控制机构失效。
    • 4. 发明授权
    • Variable valve timing mechanism for internal combustion engine
    • 内燃机可变气门正时机构
    • US07685979B2
    • 2010-03-30
    • US11861580
    • 2007-09-26
    • Yuuzou AkasakaYusuke Takagi
    • Yuuzou AkasakaYusuke Takagi
    • F01L1/34
    • F01L13/0026F01L13/0021F01L2001/0476F01L2013/0073F01L2820/032
    • A variable valve timing mechanism comprises a drive shaft including a rocker arm, a control shaft, a stopper, a first spring member and a second spring member. The rocker arm opens and closes at least one of an intake/exhaust valve in response to rotation of the drive shaft. The control shaft changes a position of the rocker arm to continuously change valve lift characteristics of the intake/exhaust valve in response to rotation of the control shaft by driving a control shaft actuator. The stopper regulates an operating range of rotation of the control shaft between upper and lower limits. The first and second spring members urge the control shaft towards the upper and lower limits, respectively. The first and second spring members return the control shaft to a balance position between the upper limit position and the lower limit position when the internal combustion engine stops.
    • 可变气门正时机构包括:驱动轴,包括摇臂,控制轴,止动件,第一弹簧构件和第二弹簧构件。 响应于驱动轴的旋转,摇臂打开和关闭进/排气门中的至少一个。 控制轴通过驱动控制轴致动器来改变摇臂的位置,以响应于控制轴的旋转而连续地改变进/排气门的气门升程特性。 止动器调节控制轴在上限和下限之间的旋转操作范围。 第一和第二弹簧构件分别促使控制轴朝向上限和下限。 当内燃机停止时,第一和第二弹簧构件将控制轴返回到上限位置和下限位置之间的平衡位置。