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    Diesel engine fuel injection system with a rate-of-injection control arrangement
    5.
    发明授权
    Diesel engine fuel injection system with a rate-of-injection control arrangement 失效
    柴油发动机燃油喷射系统具有喷射速率控制装置

    公开(公告)号：US4730585A

    公开(公告)日：1988-03-15

    申请号：US878772

    申请日：1986-06-25

    申请人： Seiko Abe ,  Toshihiko Igashira ,  Yasuyuki Sakakibara ,  Akihiro Izawa ,  Kiyonori Sekiguchi

    发明人： Seiko Abe ,  Toshihiko Igashira ,  Yasuyuki Sakakibara ,  Akihiro Izawa ,  Kiyonori Sekiguchi

    IPC分类号： F02D1/02 ,  F02B3/06 ,  F02D41/20 ,  F02D41/40 ,  F02M41/12 ,  F02M59/22 ,  H01L41/04 ,  F02M39/00

    CPC分类号： F02D41/403 ,  F02D41/2096 ,  F02M41/126 ,  F02M59/22 ,  H02N2/06 ,  H02N2/067 ,  F02B3/06 ,  F02D41/402 ,  F02D41/408 ,  Y02T10/44

    摘要： A fuel injection system comprising a fuel injection pump, at least one fuel injection nozzle connected thereto, and a control device for varying the rate of injection of the system according to varying engine parameters. The control device has a variable volume chamber, the volume of which is varied by a piston located by a piezoelectric actuator. The variable volume chamber and a pumping chamber of the pump is intermittently connected by a passage which is specifically designed in such a manner that the fluid communication between the chambers, during the delivery stroke of a pump plunger, is provided only for an initial stage of the delivery stroke. A rate of injection is controlled in the initial stage to perform a pilot injection. In the subsequent stage, in which there is no need for rate-of-injection control, the variable volume chamber is isolated from the pumping chamber in order to relieve the piezoelectric actuator from an excessively high fuel pressure that would cause degradation of the piezoelectric elements.

    摘要翻译： 一种燃料喷射系统，包括燃料喷射泵，连接到其上的至少一个燃料喷射喷嘴和用于根据变化的发动机参数改变系统的喷射速率的控制装置。 控制装置具有可变容积室，其体积由通过压电致动器定位的活塞变化。 泵的可变容积室和泵送室通过通道进行间歇地连接，该通道被特别设计成使得在泵柱塞的输送冲程期间，腔室之间的流体连通仅在初始阶段 输送中风。 在初始阶段控制喷射速率以进行引燃喷射。 在不需要喷射速率控制的后续阶段中，可变容积室与泵送室隔离，以便使压电致动器免于过高的燃料压力，这将导致压电元件的劣化 。

    Internal combustion engine with evaporated fuel purge system
    7.
    发明授权
    Internal combustion engine with evaporated fuel purge system 失效
    具有蒸发燃料净化系统的内燃机

    公开(公告)号：US5284121A

    公开(公告)日：1994-02-08

    申请号：US917209

    申请日：1992-07-22

    申请人： Seiko Abe ,  Toshihiko Igashira ,  Yasuyuki Sakakibara

    发明人： Seiko Abe ,  Toshihiko Igashira ,  Yasuyuki Sakakibara

    IPC分类号： F02D41/02 ,  F02D41/00 ,  F02D41/04 ,  F02M25/08 ,  F02M37/04

    CPC分类号： F02D41/0045 ,  F02M25/08 ,  F02M25/0836 ,  F02D41/0042

    摘要： An internal combustion engine has an evaporated fuel purge system for directly feeding evaporated fuel of a fuel tank into an intake pipe of the engine during the engine is running. This system comprises a purge control valve for opening or closing a flow line which connects an upper space of the fuel tank with the intake pipe, a controller for controlling the operation of the valve, a throttle section formed in series with the purge control valve, and pressure and temperature sensors which are located on the upstream side of the throttle section for detecting a pressure and a temperature of the evaporated fuel. When a value detected by the pressure sensor exceeds a predetermined value of pressure for providing a critical pressure ratio at which a flow rate of the evaporated fuel at the throttle section substantially equals to a sonic velocity, the controller opens the purge control valve to cause a purged flow of the evaporated fuel whose flow rate is constant. Simultaneously, the controller calculates a purged flow rate of the evaporated fuel from the detected values of the pressure and temperature sensors and a time period during which the purge control valve is opened. On the basis of the calculated purged flow rate, a reduction correction is made to an amount of the fuel to be supplied to the engine in order to maintain an air-fuel ratio in the optimum condition. The calculated purged flow rate may be indicated.

    摘要翻译： 内燃机具有蒸发的燃料净化系统，用于在发动机运行期间将燃料箱的蒸发燃料直接进入发动机的进气管。 该系统包括用于打开或关闭连接燃料箱的上部空间与进气管的流路的清洗控制阀，用于控制阀的操作的控制器，与清洗控制阀串联形成的节流部， 以及压力和温度传感器，其位于节流部分的上游侧，用于检测蒸发燃料的压力和温度。 当由压力传感器检测到的值超过预定的压力值，以提供临时压力比时，节流部分处的蒸发燃料的流量基本上等于声速，则控制器打开净化控制阀，使得 吹扫流量恒定的蒸发燃料。 同时，控制器根据压力和温度传感器的检测值以及清洗控制阀打开的时间段来计算蒸发燃料的净化流量。 基于所计算的净化流量，为了将空燃比维持在最佳状态，对要供给到发动机的燃料的量进行减小修正。 可以指示计算的净化流速。

    Pump for supplying pressurized fuel to fuel injector of internal combustion engine
    8.
    发明授权
    Pump for supplying pressurized fuel to fuel injector of internal combustion engine 失效
    用于向内燃机的燃料喷射器供应加压燃料的泵

    公开(公告)号：US4649887A

    公开(公告)日：1987-03-17

    申请号：US689374

    申请日：1985-01-07

    申请人： Toshihiko Igashira ,  Yasuyuki Sakakibara ,  Toru Yoshinaga ,  Seiko Abe

    发明人： Toshihiko Igashira ,  Yasuyuki Sakakibara ,  Toru Yoshinaga ,  Seiko Abe

    IPC分类号： F02B75/02 ,  F02M47/02 ,  F02M59/10 ,  F02M59/18 ,  F02M63/00 ,  F02M39/00

    CPC分类号： F02M59/18 ,  F02M47/027 ,  F02M59/105 ,  F02M63/0007 ,  F02B2075/027

    摘要： A pump including a plunger slidably disposed in a pump body, a transmitting member connected to the plunger, a coil spring which urges the plunger, and a cam urging the plunger against the coil spring. The plunger defines a pump chamber in the pump body. The coil spring urges the plunger in a direction such that the plunger contracts the pump chamber. The cam rotates in synchronization with the rotation of the engine and engages with the transmitting member for part of the cycle of the rotation of the engine so that the plunger increases the volume of the pump chamber. The cam releases the plunger in the remaining cycle of the rotation of the engine to allow the coil spring to urge the plunger so that the plunger displaces in a direction to reduce the volume of the pump chamber.

    摘要翻译： 一种泵，包括可滑动地设置在泵体中的柱塞，连接到柱塞的传动构件，推动柱塞的螺旋弹簧和将柱塞推向螺旋弹簧的凸轮。 柱塞在泵体中限定泵室。 螺旋弹簧沿着使柱塞收缩泵室的方向推动柱塞。 凸轮与发动机的旋转同步地旋转，并与发送构件接合，用于发动机旋转循环的一部分，使得柱塞增加泵室的容积。 凸轮在发动机旋转的剩余循环中释放柱塞，以允许螺旋弹簧推动柱塞，使得柱塞朝向减小泵室体积的方向移动。

    Piezoelectric low-pressure fuel injector
    9.
    发明授权
    Piezoelectric low-pressure fuel injector 失效
    压电式低压燃油喷射器

    公开(公告)号：US4635849A

    公开(公告)日：1987-01-13

    申请号：US729144

    申请日：1985-04-30

    申请人： Toshihiko Igashira ,  Yasuyuki Sakakibara ,  Seiko Abe ,  Masahiro Takigawa ,  Akihiro Izawa

    发明人： Toshihiko Igashira ,  Yasuyuki Sakakibara ,  Seiko Abe ,  Masahiro Takigawa ,  Akihiro Izawa

    IPC分类号： B05B17/06 ,  F02M51/04 ,  F02M57/02 ,  F02M61/04 ,  B05B3/14 ,  B05B1/30 ,  F16K15/00 ,  F16K31/08

    CPC分类号： F02M57/027 ,  B05B17/0607 ,  F02M51/04 ,  F02M61/047 ,  Y10T137/7862 ,  Y10T137/789

    摘要： A piezoelectric fuel injector for use in fuel injection systems of spark-ignition engines is provided with a normally closed valve assembly in the form of a reed valve. The valve assembly includes a valve plate having one or more outlet ports having an overall cross-sectional flow area sufficient to ensure an unobstructed flow path therethrough. The valve assembly also includes a generally flat, thin, resilient closure member cooperating with the valve set of the valve plate. The pressure wave created in the fuel in the pumping chamber upon excitation of the piezoelectric actuator propagates into the outlet ports to directly reach the thin closure member, which readily resiliently yields to permit a desired amount of fuel to be injected into the engine cylinders. The fuel injector is particularly suitable to be operated by a high-frequency drive signal in order to ensure precise metering of fuel quantity over a wide range of engine operating conditions.

    摘要翻译： 用于火花点火发动机的燃料喷射系统的压电式燃料喷射器设置有以簧片阀形式的常闭阀组件。 阀组件包括具有一个或多个出口端口的阀板，其具有足以确保穿过其中的不阻碍流动通道的整个横截面流动面积。 阀组件还包括与阀板的阀组配合的大致平坦，薄的弹性闭合件。 在压电致动器激励时，在泵送室中的燃料中产生的压力波传播到出口端口，以直接到达薄的封闭构件，其容易弹性地产生以允许将期望量的燃料喷射到发动机气缸中。 燃料喷射器特别适合于通过高频驱动信号操作，以便确保在大范围的发动机运行条件下精确计量燃料量。