公开(公告)号：US4843949A

公开(公告)日：1989-07-04

申请号：US237081

申请日：1988-08-29

申请人： Howard J. Lambers ,  Michael D. Herder ,  Richard P. Heintz

发明人： Howard J. Lambers ,  Michael D. Herder ,  Richard P. Heintz

IPC分类号： B64C13/40 ,  F15B11/08 ,  F15B13/02

CPC分类号： F15B13/02 ,  Y10T137/87169

摘要： Actuator control system includes two parallel connected orifices between a pair of fluid passages providing communication between an actuator and a flow control valve. Relief valves in series with the respective orifices block fluid flow through the orifices at low differential pressures between the fluid passages, thereby preserving the original high pressure gain of the control valve in a region about valve null. At higher differential pressures outside the valve null region, the relief valves open to permit restricted flow through the respective orifices to reduce the pressure gain of the control valve in a region outside the valve null region, which effectively reduces the stiffness of the control valve.

公开(公告)号：US4369021A

公开(公告)日：1983-01-18

申请号：US150390

申请日：1980-05-16

申请人： Richard P. Heintz

发明人： Richard P. Heintz

IPC分类号： F02B71/04 ,  F02B75/02 ,  F04B17/05 ,  F04B17/00

CPC分类号： F02B71/04 ,  F04B17/05 ,  F02B2075/025

摘要： A free piston engine pump system operates in response to internal combustion for pressurizing a working fluid to provide hydraulic power output. The free piston engine pump has double acting power pistons and pumping pistons fixedly attached as a main reciprocating member and movable relative to a housing, which itself may be relatively movable for mass balancing purposes. Air is supplied and exhaust products are exhausted from a pair of opposite combustion chambers by respective common intake and common exhaust valves that preferably are operated by a common actuator in direct or indirect (via a phasing valve) response to position of the main reciprocating member. Moreover, operation of fuel injectors and exhaust valves associated with respective combustion chambers is directly or indirectly (via the phasing valve) controlled in response to the position of the main reciprocating member in the housing and/or fluid pressure in respective pumping chambers. A pressure responsive cycling valve controls operation of the free piston engine pump to initiate start-up, and a cooling air control valve controls delivery of cooling air to the exhaust valves and passages during each exhaust cycle.

摘要翻译： 自由活塞发动机泵系统响应于内部燃烧而工作以对工作流体加压以提供液压动力输出。 自由活塞发动机泵具有双作用动力活塞和泵送活塞，其固定地附接为主往复运动构件并且可相对于壳体移动，壳体本身可以相对移动以用于质量平衡目的。 通过相应的公共进气口和普通排气阀，从一对相对的燃烧室排出空气，排气产物由直接或间接（通过相位阀）对主往复运动件的位置的响应的公共致动器操作。 此外，与各个燃烧室相关联的燃料喷射器和排气门的操作直接或间接地（经由相控阀），其响应于壳体中的主往复运动构件的位置和/或相应的泵送室中的流体压力而被控制。 压力响应循环阀控制自由活塞发动机泵的运行以启动启动，并且冷却空气控制阀在每个排气循环期间控制向排气阀和通道的冷却空气的输送。

公开(公告)号：US4143583A

公开(公告)日：1979-03-13

申请号：US835993

申请日：1977-09-23

申请人： Dan O. Bauer ,  Richard P. Heintz

发明人： Dan O. Bauer ,  Richard P. Heintz

IPC分类号： F15B20/00 ,  F15B18/00 ,  F15B13/06

CPC分类号： F15B18/00

摘要： Plural servo actuators are coupled to provide a redundant system for operating a common output device. Each servo actuator has plural servo valves each having one active output that causes controlled opposite operation of the output device and one passive output. A fault detector coupled to each servo actuator compares the sum of the passive output pressures with the pressures of two other fluid signals, in one case the supply and return fluid signals and in another case the two active output signals of the servo valves, to detect the condition thereof. A convenient checkout system and a fluid by-pass mechanism also are provided in the fault detector.

摘要翻译： 多个伺服致动器被耦合以提供用于操作公共输出设备的冗余系统。 每个伺服致动器具有多个伺服阀，每个伺服阀具有一个有效输出，其导致输出装置的受控相对操作和一个被动输出。 耦合到每个伺服致动器的故障检测器将无源输出压力的总和与两个其它流体信号的压力进行比较，在一种情况下，供应和返回流体信号，在另一种情况下，将伺服阀的两个主动输出信号进行检测 其条件。 在故障检测器中还提供方便的检出系统和流体旁路机构。

公开(公告)号：US4133250A

公开(公告)日：1979-01-09

申请号：US808877

申请日：1977-06-22

申请人： Richard P. Heintz

发明人： Richard P. Heintz

IPC分类号： F15B9/09 ,  F15B13/16 ,  F15B9/03

CPC分类号： F15B13/16

摘要： A combined feedback control system for a servo actuator including a ram that produces a mechanical displacement output of the system as directed by a position command signal. In the combined feedback control system a lever arrangement mechanically combines displacement and velocity information of the ram, and such combined information is conveniently transduced and electrically combined with the position command signal to develop an error signal that controls an electro-hydraulic valve. The latter preferably through a fluid amplification stage controls the delivery of fluid to the ram and, thus, the position thereof. Through the lever arrangement a mechanical failure control is operative to move the ram to a predetermined position upon failure of the electro-hydraulic valve and a manual control is operable to control the ram position via the fluid amplification stage.

摘要翻译： 一种用于伺服致动器的组合反馈控制系统，其包括在由位置指令信号指示的情况下产生系统的机械位移输出的压头。 在组合反馈控制系统中，杠杆装置机械地组合压头的位移和速度信息，并且这种组合信息被方便地传导并与位置指令信号电气组合，以产生控制电动液压阀的误差信号。 后者优选地通过流体放大级控制流体输送到冲头，从而控制其位置。 通过杠杆装置，机械故障控制可操作以在电动液压阀失效时将压头移动到预定位置，并且手动控制可操作以经由流体放大级来控制压头位置。

公开(公告)号：US4947950A

公开(公告)日：1990-08-14

申请号：US309274

申请日：1989-02-10

申请人： Richard P. Heintz

发明人： Richard P. Heintz

IPC分类号： B60K31/10

CPC分类号： B60K31/105

摘要： A vehicle speed control device in a vehicle having a variable speed engine and drive train arrangement connecting the engine to a drive wheel therefore includes a foot pedal movable in first and second directions, a vehicle speed transducer arrangement for generating a signal in response to vehicle speeds in excess of a predetermined speed and a control arrangement for varying the value of the predetermined speed. A throttle arrangement is responsive to movement of the foot pedal in the first direction for increasing the vehicle speed and is responsive to movement of the foot pedal in the second direction for decreasing the vehicle speed. A coupling arrangement transfers movement of a movable actuator to the foot pedal, to move the foot pedal in the first and second directions. A regulating arrangement is responsive to the signal of the speed transducer arrangement for regulating the vehicle speed at or just below the predetermined speed. The regulating arrangement includes a first drive arrangement for urging the actuator and linked foot pedal in the first direction and a second drive arrangement for urging the actuator and linked foot pedal in the second direction. An arrangement for selectively uncoupling the foot pedal from the actuator is provided.

摘要翻译： 因此，具有将发动机与驱动轮连接的变速发动机和传动系统的车辆中的车辆速度控制装置包括可在第一和第二方向上移动的脚踏板，用于响应于车辆速度产生信号的车辆速度传感器装置 超过预定速度和用于改变预定速度的值的控制装置。 节气门装置响应于脚踏板沿第一方向的运动，以增加车速，并且响应于脚踏板在第二方向上的运动以减小车速。 联接装置将可移动致动器的运动传递到脚踏板，以沿第一和第二方向移动脚踏板。 调节装置响应于速度传感器装置的信号，用于在或等于预定速度下调节车速。 调节装置包括用于沿第一方向推动致动器和连接的脚踏板的第一驱动装置和用于沿第二方向推动致动器和连接的脚踏板的第二驱动装置。 提供了用于选择性地将脚踏板与致动器分离的装置。

公开(公告)号：US4891941A

公开(公告)日：1990-01-09

申请号：US226622

申请日：1988-08-01

申请人： Richard P. Heintz

发明人： Richard P. Heintz

IPC分类号： B60K6/12 ,  F02B71/04

CPC分类号： B60K6/12 ,  F02B71/045 ,  Y02T10/6208

摘要： A stored energy-type propulsion system for a vehicle employing a free piston engine-pump hydraulically connected to a drive motor, which in turn connects to the vehicle wheels. The hydraulic connection between the engine-pump and the drive motor includes a large-capacity pressure accumulator which is normally isolated from the system, and which is opened for communication with the system to supply pressure fluid to the drive motor only under conditions demanding peak operating pressure for limited time durations. An auxiliary accumulator of significantly smaller capacity is also connected to the hydraulic connection. This auxiliary accumulator is normally in open communication with the hydraulic connection to function as a cushion to minimize pressure fluctuations so that the system can operate in an ON-OFF cycle whereby the engine-pump can run for a large number of pumping cycles during the "ON" part of the cycle, and then be stopped for an equivalent number of cycles during the "OFF" part, during which the auxiliary accumulator is capable of driving the drive motor at the steady-state vehicle condition. The auxiliary accumulator can be immediately isolated from the hydraulic connection so that the system can respond to a sudden demand for increased power, such as due to a significant depression in the vehicle accelerator pedal.

摘要翻译： 一种用于车辆的存储能量型推进系统，其采用液压连接到驱动电动机的自由活塞发动机泵，驱动电动机又连接到车辆车轮。 发动机泵和驱动电动机之间的液压连接包括大容量蓄压器，其通常与系统隔离，并且其被打开用于与系统通信，以在仅需要峰值操作的条件下向驱动电动机供应压力流体 压力有限的持续时间。 液压连接也连接了一个容量较小的辅助蓄能器。 该辅助蓄能器通常与液压连接开放连通，以起到缓冲作用，以使压力波动最小化，使得系统能够在通/断循环中工作，由此，在“循环”过程中，发动机泵可以运行大量泵送循环， ON“部分，然后在”OFF“部分停止等效数量的循环，在此期间辅助累加器能够在稳态车辆状态下驱动驱动电机。 辅助蓄能器可以立即与液压连接隔离，使得系统可以响应突然的增加功率的需求，例如由于车辆加速踏板的显着下降。

公开(公告)号：US4087205A

公开(公告)日：1978-05-02

申请号：US601226

申请日：1975-08-01

申请人： Richard P. Heintz

发明人： Richard P. Heintz

IPC分类号： F01B11/00 ,  F02B71/04 ,  F02B75/02 ,  F02B75/04 ,  F02M49/00 ,  F02M49/04 ,  F04B7/02 ,  F04B17/05 ,  F04B31/00 ,  F04B35/00

CPC分类号： F02M49/00 ,  F01B11/00 ,  F02B71/045 ,  F02B75/04 ,  F02M49/04 ,  F04B17/05 ,  F04B7/0266 ,  F02B2075/025

摘要： A hybrid propulsion system, particularly for a vehicle, having a free piston type engine-pump unit connected to a working fluid circuit for controlling pressurization of a working fluid, which fluid in turn drives a hydraulic motor interconnected to the vehicle wheels. The motor-pump unit includes a free piston assembly having a pair of fixedly connected power pistons, each of which has a pump piston fixed thereto. The fluid system includes high and low pressure accumulators in communication with pumping chambers associated with the pump pistons. The power pistons are used for driving the pump pistons to pressurize the working fluid when self-sustained operation of the engine-pump unit is desired. However, the flow of working fluid to the pumping chambers can be reversed during startup of the engine so that the high pressure fluid is used for driving the free piston assembly until same is reciprocated at a rate rapidly enough to permit self-sustained reciprocation thereof.

摘要翻译： 一种特别用于车辆的混合动力推进系统，具有连接到工作流体回路的自由活塞式发动机 - 泵单元，用于控制工作流体的加压，该流体又驱动与车轮互连的液压马达。 电动泵单元包括具有一对固定连接的动力活塞的自由活塞组件，每个活塞具有固定到其上的泵活塞。 流体系统包括与泵活塞相关联的泵送室连通的高压和低压蓄能器。 动力活塞用于驱动泵活塞以在需要发动机 - 泵单元的自维持操作时对工作流体加压。 然而，在发动机启动期间，到泵送室的工作流体的流动可以被反转，使得高压流体被用于驱动自由活塞组件，直到相同的速度以足够快的速度往复运动以允许其自身的可往复运动。

公开(公告)号：US4590909A

公开(公告)日：1986-05-27

申请号：US611642

申请日：1984-05-18

申请人： Richard P. Heintz

发明人： Richard P. Heintz

IPC分类号： B60K31/00 ,  F02D11/10 ,  F02D41/14

CPC分类号： F02D11/10 ,  B60K31/00 ,  F02D2200/501

摘要： A position control device for use in association with a foot pedal member controlling the fuel flow to an engine of a vehicle. The device includes an elongated and hollow chamber means and an actuator piston slidably disposed in the chamber means and movable between first and second positions therein. The first position represents a position of maximum fuel supply to the engine. Structure separately supporting the foot pedal member is provided for movement between first and second positions but permitting an operative connection of the foot pedal member to the actuator piston for movement along a path. A control device is provided for controlling the position of the actuator piston between the first and second positions and in response to vehicle speed and includes a yieldable resistance device for causing the actuator piston to resist a change in the position of the foot pedal member if an effort is made to alter the position of the foot pedal member toward the first position to increase the fuel supply to the engine and beyond the position of the actuator piston determined by the control means while simultaneously permitting an overpowering of the yieldable resistance device to effect a yieldable movement of the foot pedal member and the actuator piston together along the path to vary the fuel supply to the engine.

摘要翻译： 一种位置控制装置，用于与控制向车辆的发动机的燃料流动的脚踏踏板构件相关联。 该装置包括细长的中空室装置和可滑动地设置在室装置中并可在其中的第一和第二位置之间移动的致动器活塞。 第一位置表示发动机的最大燃料供给位置。 提供单独支撑脚踏板构件的结构用于在第一和第二位置之间运动，但允许脚踏板构件与致动器活塞的有效连接以沿着路径移动。 提供一种控制装置，用于控制致动器活塞在第一和第二位置之间的位置并且响应于车辆速度，并且包括可屈服阻力装置，用于使致动器活塞抵抗脚踏板构件的位置的改变，如果 努力改变脚踏板构件朝向第一位置的位置，以增加对发动机的燃料供给并且超过由控制装置确定的致动器活塞的位置，同时允许可屈服阻力装置的强力施加以实现 脚踏板构件和致动器活塞沿路径一起的可屈曲运动，以改变向发动机的燃料供给。