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    • 1. 再颁专利
    • Variable engine valve control system
    • 可变发动机气门控制系统
    • USRE37604E1
    • 2002-03-26
    • US08373701
    • 1995-01-17
    • Warren F. KaufmanMichael M. Schechter
    • Warren F. KaufmanMichael M. Schechter
    • F01L902
    • F01L9/02F02B2075/025G05B2219/23363G05B2219/25297G05B2219/25406Y10T137/0318
    • A variable engine valve control system wherein each of the reciprocating intake and/or exhaust valves is hydraulically controlled and includes a piston subjected to fluid pressure acting on surfaces at both ends of the piston. The space at one end of the piston is connected to a source of high pressure fluid while the space at the other end is connected to a source of high pressure fluid and a source of low pressure fluid, and disconnected from each through action of controlling means such as solenoid valves. The controlling means may include a rotary hydraulic distributor coupled with each solenoid valve, thereby permitting each solenoid valve to control operation of a plurality of engine valves in succession. Equal air delivery to all engine cylinders having the aforementioned variable valve control system is assured by controlling electric pulses of variable duration and timing, the system involving means for making individual modifications of the durations of the electric pulses controlling each individual actuator, and the modifications being of such nature as to assure that all actuators control the engine intake (or exhaust) valves in an identical manner to assure equal valve strokes in all cylinders.
    • 一种可变发动机气门控制系统,其中每个往复式进气阀和/或排气阀是液压控制的,并且包括经过作用在活塞两端的表面上的流体压力的活塞。 活塞一端的空间连接到高压流体源,而另一端的空间连接到高压流体源和低压流体源,并且从控制装置的每个通过动作断开 如电磁阀。 控制装置可以包括与每个电磁阀连接的旋转液压分配器,从而允许每个电磁阀连续地控制多个发动机气门的操作。 通过控制可变持续时间和定时的电脉冲来确保具有上述可变气门控制系统的所有发动机气缸的相等空气输送,该系统涉及用于对控制每个单独的致动器的电脉冲的持续时间进行各种修改的装置, 具有这样的性质,以确保所有致动器以相同的方式控制发动机进气(或排气)阀,以确保在所有气缸中相等的阀行程。
    • 3. 发明授权
    • Hydraulic valve control system for internal combustion engines
    • 内燃机液压阀控制系统
    • US5127375A
    • 1992-07-07
    • US680221
    • 1991-04-04
    • Timothy J. BowmanJulian A. LoRussoWarren F. Kaufman
    • Timothy J. BowmanJulian A. LoRussoWarren F. Kaufman
    • F01L9/02
    • F01L9/025F01L9/023F01L2001/34446
    • A modular hydraulic valve actuating assembly for use in association with a single combustion chamber in a multicylinder internal combustion engine cylinder head. The assembly includes a housing having a mounted surface to attach to the cylinder head immediately above a poppet valve. The housing includes a first cavity spaced from and oriented non-parallel to the poppet valve, a second cavity coaxially aligned with the poppet valve, and a fluid passageway extending between and hydraulically coupled to the first and second cavities. A master piston within the housing co-operates with a camshaft to define a first enclosed fluid chamber which varies in displacement as the master piston is reciprocally oscillated by the camshaft. A slave piston within the housing co-operates with the poppet valve to define a second enclosed fluid chamber hydraulically connected to the first and varying in displacement as the slave piston oscillates. A valve means within the housing regulates the flow of fluid from the pressurized master cylinder through an accumulator fluid port thereby automatically varying any one or more of valve lift, valve timing or duration of valve opening in response to an input signal at any point during engine operation.
    • 一种用于与多缸内燃机气缸盖中的单个燃烧室相关联使用的模块化液压阀致动组件。 该组件包括具有安装表面的壳体,其紧靠在提升阀上方的气缸盖上。 壳体包括与提升阀间隔开并定向成不平行于提升阀的第一腔,与提升阀同轴对准的第二腔以及在第一腔和第二腔之间延伸并液压耦合的流体通道。 壳体内的主活塞与凸轮轴配合,以限定当主活塞由凸轮轴往复摆动时位移发生变化的第一封闭流体室。 壳体内的从动活塞与提升阀配合,以限定第二封闭流体室,液压连接到第一封闭流体室,并随着从动活塞的振荡而变化。 壳体内的阀装置调节来自加压主缸的流体流过蓄液器流体端口,从而响应于在发动机期间的任何点处的输入信号而自动改变阀升程,气门正时或阀打开持续时间中的一个或多个 操作。
    • 6. 发明授权
    • Engine exhaust gas recirculating control
    • 发动机排气再循环控制
    • US3981283A
    • 1976-09-21
    • US502523
    • 1974-09-03
    • Warren F. Kaufman
    • Warren F. Kaufman
    • F02M25/07F02M25/06
    • F02M26/58F02M26/68F02M26/21
    • A motor vehicle type engine has an exhaust gas crossover passage connecting exhaust gases to the intake manifold below the carburetor and past a selectively operable, valve type sonic flow metering control that provides very accurate and reproducible measurements of the exhaust gas flow at all times, the control comprising a variable area convergent-divergent nozzle that is so designed and constructed as to provide sonic flow of the gases through the metering area over essentially the entire operating range of the engine manifold vacuum regardless of the change in metering area, thereby providing a constant flow rate for each changed area of the nozzle, with variances in the flow rate being in direct proportion to the change in metering area.
    • 机动车型发动机具有废气交叉通道,其将废气连接到化油器下方的进气歧管,并且经过可选择性操作的阀式声流计量控制,其始终提供非常精确和可再现的废气流量测量, 控制器包括可变区域会聚 - 发散喷嘴,其被设计和构造成在发动机歧管真空的基本上整个工作范围内提供气体通过计量区域的声流,而与计量区域的变化无关,从而提供恒定的 喷嘴每个改变区域的流量,流量的变化与计量区域的变化成正比。