Exhaust gas recirculation device
    1.
    发明授权
    Exhaust gas recirculation device 失效
    废气再循环装置

    公开(公告)号:US4462377A

    公开(公告)日:1984-07-31

    申请号:US451052

    申请日:1982-12-20

    摘要: An EGR device for an internal combustion engine, including an EGR valve body in an EGR pipe for changing the opening degree of the EGR pipe for regulating the amount of the recirculated exhaust gas, a diaphragm supported by casing of the EGR valve and connected to the EGR valve body for forming a negative pressure chamber, and a solenoid fixed to a sleeve of one of the casing for driving a spool valve in the direction to the diaphragm when the solenoid is excited. The excitation of the solenoid is controlled by a control circuit in accordance with the running conditions of the internal combustion engine.

    摘要翻译: 一种用于内燃机的EGR装置,包括在用于改变用于调节再循环废气量的EGR管的开度的EGR管中的EGR阀体,由EGR阀的壳体支撑并连接到EGR阀的EGR阀体 用于形成负压室的EGR阀体和固定到壳体中的一个的套管的螺线管,用于当螺线管被激励时沿着隔膜的方向驱动滑阀。 螺线管的激励根据内燃机的运行条件由控制电路控制。

    EGR Control system for diesel engine
    2.
    发明授权
    EGR Control system for diesel engine 失效
    柴油机EGR控制系统

    公开(公告)号:US4450825A

    公开(公告)日:1984-05-29

    申请号:US454099

    申请日:1982-12-28

    IPC分类号: F02B3/06 F02D21/08 F02M25/06

    摘要: In an EGR control system for a diesel engine, the EGR amount is controlled by controlling the pressure in a diaphragm chamber of an EGR valve using the output signal of a computer, responsive to signals from a plurality of engine running condition sensors, for calculating the EGR amount with corrections according to the engine running conditions and the excess air rate. In some cases, the EGR is carried out only when the rotational speed of the engine is higher than a predetermined rotational speed. Also, in some cases, the EGR is carried out when an occurrence of idling is detected, even if the rotational speed of the engine is lower than the predetermined rotational speed.

    摘要翻译: 在用于柴油发动机的EGR控制系统中,通过响应于来自多个发动机运行状态传感器的信号,通过使用计算机的输出信号控制EGR阀的隔膜室中的压力来控制EGR量,以计算 EGR量根据发动机运行条件和过量空气速率进行校正。 在某些情况下,只有当发动机的转速高于预定转速时才执行EGR。 此外,在某些情况下,即使发动机的转速低于规定的转速,也能够在发现怠速时进行EGR。

    Method and apparatus for controlling exhaust gas recirculation in a
diesel engine
    4.
    发明授权
    Method and apparatus for controlling exhaust gas recirculation in a diesel engine 失效
    用于控制柴油机废气再循环的方法和装置

    公开(公告)号:US4446839A

    公开(公告)日:1984-05-08

    申请号:US396682

    申请日:1982-07-09

    CPC分类号: F02D41/005 F02B3/06 Y02T10/47

    摘要: A method and an apparatus for controlling EGR in a diesel engine according to the present invention used an EGR valve having a diaphragm chamber, a pressure supplying device for supplying air pressure to the diaphragm chamber, an adjusting device for adjusting the air pressure corresponding to the rotation angle of a rotary shaft for controlling the amount of fuel injected, a rotation rate detector of the engine, and a pressure releasing device for releasing a portion of the negative pressure in said diaphragm chamber. In the method and apparatus, a portion of the negative pressure in the diaphragm chamber is released to an atmospheric pressure corresponding to the rotation rate of the engine. Thus, the rate of EGR is decreased in accordance with an increase in the rotation rate in an operating condition higher than a predetermined rotation rate.

    摘要翻译: 根据本发明的用于控制柴油机中的EGR的方法和装置使用具有隔膜室的EGR阀,用于向隔膜室供应空气压力的压力供应装置,用于调节对应于所述隔膜室的空气压力的调节装置 用于控制喷射的燃料量的旋转轴的旋转角度,发动机的转速检测器和用于释放所述隔膜室中的负压的一部分的压力释放装置。 在该方法和装置中,隔膜室中的一部分负压被释放到对应于发动机转速的大气压。 因此,根据在高于预定转速的运行状态下的转速的增加,EGR率降低。

    High voltage generating device
    8.
    发明授权
    High voltage generating device 失效
    高压发生装置

    公开(公告)号:US4767967A

    公开(公告)日:1988-08-30

    申请号:US741224

    申请日:1985-06-04

    摘要: A high voltage generating device with a PZT element is disclosed. The device includes an energization control unit for generating an energization voltage, a PZT element unit for performing voltage conversion in response to an output from the energization control unit, and a load unit for receiving an output from the PZT element unit. The PZT element unit is provided with a resonating member and an electrostrictive element, and a period of an output voltage from the energization control unit is controlled so that a primary voltage from the PZT element unit becomes maximum at a timing when the output voltage from the energization control unit is not supplied.

    摘要翻译: 公开了一种具有PZT元件的高压发生器件。 该装置包括用于产生通电电压的通电控制单元,用于响应于来自通电控制单元的输出而进行电压转换的PZT单元单元,以及用于接收PZT单元单元的输出的负载单元。 PZT元件单元设置有谐振元件和电致伸缩元件,并且控制来自通电控制单元的输出电压的周期,使得来自PZT元件单元的初级电压在来自 不提供通电控制单元。

    Atmospheric pressure compensation system for exhaust gas recirculation
    10.
    发明授权
    Atmospheric pressure compensation system for exhaust gas recirculation 失效
    废气再循环大气压力补偿系统

    公开(公告)号:US4488533A

    公开(公告)日:1984-12-18

    申请号:US599276

    申请日:1984-04-11

    CPC分类号: F02D21/08 F02M26/57

    摘要: An atmospheric pressure compensation system for an exhaust gas recirculation (EGR) of an internal combustion engine comprises a vacuum source for generating vacuum of a substantially constant absolute value, an EGR valve for regulating the gas flow passing through an EGR passage by means of the vacuum, an atmospheric pressure compensation valve for opening and closing a passage for transmitting the vacuum from the vacuum source to the EGR valve, a control circuit for detecting the engine running conditions and generating a control signal, and an actuator for contributing to actuate the compensation valve in response to the control signal. The atmospheric pressure compensation valve comprises a valve body defining at least two chambers partitioned by a diaphragm. The atmospheric pressure is introduced into one of the chambers, while the substantially constant vacuum from the vacuum source is introduced into the other chamber. A servo valve is operatively connected to the diaphragm and to the actuator. The servo valve is subjected to a force of the actuator and the pressure difference between the atmospheric pressure and the substantially constant vacuum.

    摘要翻译: 用于内燃机的废气再循环(EGR)的大气压力补偿系统包括用于产生绝对值基本上恒定的真空的真空源,用于通过真空调节通过EGR通道的气流的EGR阀 ,用于打开和关闭用于将真空从真空源传递到EGR阀的通道的大气压力补偿阀,用于检测发动机运行状况并产生控制信号的控制电路,以及用于促动补偿阀 响应于控制信号。 大气压力补偿阀包括限定由隔膜分隔开的至少两个室的阀体。 大气压力被引入到一个室中,而来自真空源的基本恒定的真空被引入到另一个室中。 伺服阀可操作地连接到隔膜和致动器。 伺服阀受到致动器的力和大气压力与基本上恒定的真空之间的压差。