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    • 2. 发明申请
    • Hydraulic-pressure actuated locking mechanism and method
    • 液压致动锁定机构及方法
    • US20080173268A1
    • 2008-07-24
    • US11626025
    • 2007-01-23
    • Burak A. Gecim
    • Burak A. Gecim
    • F01L1/245
    • F01L1/267F01L1/18F01L1/255F01L13/0005F01L13/0015F01L2001/34453
    • A mechanism and method is provided for preventing instantaneous unlatching of a driving and a driven member upon an accidental drop in the hydraulic-holding pressure. One embodiment of the mechanism includes a housing having an inlet port connectable to a substantially sustained high pressure fluid source; and a configured locking pin axially displaceable to an engaged position with respect to the inlet port in response to high pressure fluid entrapped in the housing. The locking pin is spring-biasingly axially displaceable to a disengaged position when the pressure is low. The axial displacement of the locking pin sufficiently overlaps the inlet port to form a variable orifice so that the rate of exhausting of entrapped fluid is variable. In another embodiment, the entrapped fluid is slowly exhausted until a seal length is reduced to zero by the retraction of the locking pin. In another embodiment, latching and unlatching is controlled by pressure pulses. In the latched state, contact between positively-engaged parts negates the need for sustained high fluid pressures.
    • 提供一种机构和方法,用于防止在液压保持压力的意外下降时驱动和从动构件的瞬时解锁。 机构的一个实施例包括具有可连接到基本上持续的高压流体源的入口的壳体; 以及配置的锁定销,其响应于捕获在壳体中的高压流体而轴向移位到相对于入口的接合位置。 当压力低时,锁定销弹簧偏置地轴向移动到脱离位置。 锁定销的轴向位移与入口端口充分重叠以形成可变孔口,使得截留流体的排出速率是可变的。 在另一个实施例中,捕获的流体被缓慢排出,直到通过锁定销的缩回将密封件长度减小到零。 在另一个实施例中,通过压力脉冲控制闭锁和解锁。 在锁定状态下,正向啮合部件之间的接触不需要持续的高流体压力。
    • 4. 发明授权
    • Hydraulic-pressure actuated locking mechanism and method
    • 液压致动锁定机构及方法
    • US07621241B2
    • 2009-11-24
    • US11626025
    • 2007-01-23
    • Burak A. Gecim
    • Burak A. Gecim
    • F01L1/34
    • F01L1/267F01L1/18F01L1/255F01L13/0005F01L13/0015F01L2001/34453
    • A mechanism and method is provided for preventing instantaneous unlatching of a driving and a driven member upon an accidental drop in the hydraulic-holding pressure. One embodiment of the mechanism includes a housing having an inlet port connectable to a substantially sustained high pressure fluid source; and a configured locking pin axially displaceable to an engaged position with respect to the inlet port in response to high pressure fluid entrapped in the housing. The locking pin is spring-biasingly axially displaceable to a disengaged position when the pressure is low. The axial displacement of the locking pin sufficiently overlaps the inlet port to form a variable orifice so that the rate of exhausting of entrapped fluid is variable. In another embodiment, the entrapped fluid is slowly exhausted until a seal length is reduced to zero by the retraction of the locking pin. In another embodiment, latching and unlatching is controlled by pressure pulses. In the latched state, contact between positively-engaged parts negates the need for sustained high fluid pressures.
    • 提供一种机构和方法,用于防止在液压保持压力的意外下降时驱动和从动构件的瞬时解锁。 机构的一个实施例包括具有可连接到基本上持续的高压流体源的入口的壳体; 以及配置的锁定销,其响应于捕获在壳体中的高压流体而轴向移位到相对于入口的接合位置。 当压力低时,锁定销弹簧偏置地轴向移动到脱离位置。 锁定销的轴向位移与入口端口充分重叠以形成可变孔口,使得截留流体的排出速率是可变的。 在另一个实施例中,捕获的流体被缓慢排出,直到通过锁定销的缩回将密封件长度减小到零。 在另一个实施例中,通过压力脉冲控制闭锁和解锁。 在锁定状态下,正向啮合部件之间的接触不需要持续的高流体压力。
    • 6. 发明授权
    • Multi-step valve actuation system
    • 多级阀门驱动系统
    • US07404386B1
    • 2008-07-29
    • US11674166
    • 2007-02-13
    • Madhusudan RaghavanBurak A. GecimJohn Ioan Manole
    • Madhusudan RaghavanBurak A. GecimJohn Ioan Manole
    • F01L1/18
    • F01L13/0036F01L1/146F01L1/18Y10T74/20882Y10T74/2107
    • A multi-step valve actuation system is provided to selectively open a poppet valve of an internal combustion engine having a camshaft rotatably supported by a cylinder block. The multi-step valve actuation system includes a rocker arm operable to selectively open the poppet valve and a pushrod operable to bias the rocker arm. A first follower arm is engageable with a first cam of the camshaft and operates to selectively bias the pushrod. A lash adjuster is disposed between the first follower arm and the pushrod. A second follower arm is engageable with a second cam of the camshaft and selectively latchable with respect to the first follower arm, while a third follower arm is engageable with a third cam of the camshaft and selectively latchable with respect to the first follower arm. An internal combustion engine incorporating the multi-step valve actuation system of the present invention is also disclosed.
    • 提供多级阀致动系统以选择性地打开具有由气缸体可旋转地支撑的凸轮轴的内燃机的提升阀。 多级阀致动系统包括可操作以选择性地打开提升阀的摇臂和可操作以偏置摇臂的推杆。 第一跟随器臂可与凸轮轴的第一凸轮接合并且操作以选择性地偏压推杆。 间隙调节器设置在第一从动臂和推杆之间。 第二从动臂可与凸轮轴的第二凸轮接合,并且可相对于第一从动臂可选择地锁定,而第三从动臂可与凸轮轴的第三凸轮接合并且可相对于第一从动臂可选择地闭锁。 还公开了结合本发明的多级阀致动系统的内燃机。
    • 9. 发明授权
    • Engine valvetrain having variable valve lift timing and duration
    • 发动机阀门具有可变气门升程时间和持续时间
    • US07614371B2
    • 2009-11-10
    • US11671491
    • 2007-02-06
    • Burak A. Gecim
    • Burak A. Gecim
    • F01L1/34
    • F01L1/356
    • An engine includes a crankshaft, a first noncircular gear operatively connected to the crankshaft to be driven thereby, a second noncircular gear meshingly engaged with the first noncircular gear, a cam operatively connected to the second noncircular gear to be driven thereby, and a valve operatively connected to the cam for movement between open and closed positions. The noncircular gears enable the speed of the cam to vary cyclically with constant rotation of the crankshaft speed. Valve lift timing and duration may be variable by moving the second noncircular gear with respect to the first noncircular gear while maintaining meshing engagement therebetween.
    • 发动机包括曲轴,可操作地连接到待驱动的曲轴的第一非圆形齿轮,与第一非圆形齿轮啮合的第二非圆形齿轮,可操作地连接到待驱动的第二非圆形齿轮的凸轮,以及可操作的阀 连接到凸轮以在打开和关闭位置之间移动。 非圆形齿轮使得凸轮的速度随曲轴速度的恒定旋转而周期性地变化。 通过相对于第一非圆形齿轮移动第二非圆形齿轮同时保持它们之间的啮合接合,气门提升时间和持续时间可以变化。