Fuel injection pump for an internal combustion engine
    12.
    发明授权
    Fuel injection pump for an internal combustion engine 失效
    用于内燃机的燃油喷射泵

    公开(公告)号:US4793314A

    公开(公告)日:1988-12-27

    申请号:US92204

    申请日:1987-09-02

    摘要: A fuel injection pump including a valve opening and closing an overflow passage formed in a body of the pump to connect a high pressure chamber to a low pressure chamber. The low pressure chamber is provided for reserving low pressure fuel, and the high pressure chamber is provided for pressurizing fuel sent from the low pressure chamber and for discharging the pressurized fuel to fuel injectors. A plunger has intake grooves which open the feed passage to communicate the high pressure chamber with the low pressure chamber on an intake action of the pump. The body of the pump has a feed passage formed therein which connects the high pressure chamber to a control chamber. The pressure in the control chamber is changed by the expansion and contaction of a piezoelectric actuator, and the pressure in the control chamber urges the valve in a direction in which the valve closes the overflow passage. A start and end of a fuel injection period, and a fuel injection ratio (a pilot fuel injection), can be controlled by the opening and closing of the valve.

    摘要翻译: 一种燃料喷射泵,包括阀,其开启和关闭形成在泵的主体中的溢流通道,以将高压室连接到低压室。 为提供低压燃料而设置低压室,高压室用于对从低压室送出的燃料加压并将加压燃料排出到燃料喷射器。 柱塞具有进气槽,该进气槽打开进料通道,以在泵的进气作用下将高压室与低压室连通​​。 泵的主体具有形成在其中的供给通道,其将高压室连接到控制室。 通过压电致动器的膨胀和连接来改变控制室中的压力,并且控制室中的压力在阀关闭溢流通道的方向上推动阀。 可以通过阀的打开和关闭来控制燃料喷射期间的开始和结束以及燃料喷射比(先导燃料喷射)。

    Piezoelectric control valve for fuel injector of internal combustion
engine
    14.
    发明授权
    Piezoelectric control valve for fuel injector of internal combustion engine 失效
    内燃机燃油喷射器用压电控制阀

    公开(公告)号:US4610427A

    公开(公告)日:1986-09-09

    申请号:US723896

    申请日:1985-04-16

    摘要: Disclosed is a piezoelectric control valve which is arranged midway in a passage for supplying a high-pressure fuel to a fuel injection valve, and opens and closes this passage according to expansion and contraction of a piezoelectric element laminate. The valve body of the piezoelectric control valve is slidably held in a bore into which a high-pressure fuel passage connected to the fuel injection valve and a low-pressure fuel passage communicating with a fuel storage portion are opened. An annular groove is formed on the peripheral surface of the valve body, and the high-pressure fuel passage and the low-pressure fuel passage can communicate with each other through this annular groove. A piston moving reciprocatively according to expansion and contraction of the piezoelectric element laminate is provided, and a pressure chamber is formed between the piston and the valve body. The pressure in the pressure chamber is increased and decreased by the reciprocative movement of the piston, and by this increase and decrease of the pressure in the pressure chamber, the valve body is moved to connect the high-pressure fuel passage and the low-pressure passage to each other or to disconnect these passages from each other.

    摘要翻译: 公开了一种压电控制阀,其设置在用于向燃料喷射阀供给高压燃料的通道的中途,并且根据压电元件层压体的膨胀和收缩来打开和关闭该通道。 压电控制阀的阀体可滑动地保持在与燃料喷射阀连接的高压燃料通路和与燃料储存部分连通的低压燃料通道的孔中。 在阀体的周面形成有环状的槽,高压燃料通路和低压燃料通路能够通过该环状槽相互连通。 提供了根据压电元件层压体的膨胀和收缩来往复移动的活塞,并且在活塞和阀体之间形成有压力室。 压力室中的压力由于活塞的往复运动而增加和减小,并且通过压力室中的压力的​​这种增加和减少,阀体被移动以连接高压燃料通道和低压 相互通过或断开这些通道。

    Piezoelectric hydraulic control valve
    15.
    发明授权
    Piezoelectric hydraulic control valve 失效
    压电式液压控制阀

    公开(公告)号:US4550744A

    公开(公告)日:1985-11-05

    申请号:US551693

    申请日:1983-11-14

    摘要: A hydraulic control valve having a piezoelectric actuator comprises an expansible sleeve loosely received within a bore of the valve housing, with one end thereof being fixedly or stationarily mounted relative to the housing and the other end thereof being expansibly mounted within the bore. A slidable first piston is mounted within the bore of the valve housing and is urged against the other end of the expansible sleeve. This first piston floatingly supports one end of the piezoelectric actuator, the other end of which is supported by a second piston which is slidably mounted within the sleeve and is coupled to a valve member operable to cooperate with a valve seat to open and close an inside fuel passage communicating an inlet port with an outlet port. The linear expansion of the sleeve due to a change in the ambient temperature causes the first piston to displace in one direction together with the piezoelectric actuator supported thereby so that the linear expansion of the piezoelectric actuator occurring in the opposite direction due to a similar ambient temperature change is counterbalanced whereby the second piston, serving as an output member of the piezoelectric actuator, is maintained at a constant distance with respect to the valve member regardless of change in the ambient temperature. Such a temperature compensation structure enabling precise positioning of the second piston ensures improved injection timing and injection quantity control of a fuel injection system for an internal combustion engine.

    摘要翻译: 具有压电致动器的液压控制阀包括松动地容纳在阀壳体的孔内的可膨胀套管,其一端相对于壳体固定地或固定地安装,并且其另一端可膨胀地安装在孔内。 可滑动的第一活塞安装在阀壳体的孔内并被推靠在可膨胀套管的另一端。 该第一活塞浮动地支撑压电致动器的一端,其另一端由第二活塞支撑,第二活塞可滑动地安装在套筒内并联接到可与阀座配合以打开和关闭内部的阀构件 燃料通道将入口与出口连通。 由于环境温度的变化,套筒的线性膨胀导致第一活塞与由其支撑的压电致动器一起在一个方向上移位,使得压电致动器的线性膨胀由于相似的环境温度而发生在相反方向 变化是平衡的,由此作为压电致动器的输出构件的第二活塞相对于阀构件保持恒定的距离,而与环境温度的变化无关。 这种能够精确定位第二活塞的温度补偿结构确保了用于内燃机的燃料喷射系统的改进的喷射正时和喷射量控制。

    Flow control device
    16.
    发明授权
    Flow control device 失效
    流量控制装置

    公开(公告)号:US4480619A

    公开(公告)日:1984-11-06

    申请号:US501788

    申请日:1983-06-07

    摘要: A flow control device advantageously used in a fuel injection system for a diesel engine. The flow control device includes a spool valve defining on its sides first and second chambers which are connected with each other by means of a throttle. The second chamber is connected to a high pressure pipeline connecting a fuel pump with a fuel injector, while the first chamber is selectively opened to a relief line by means of an electrically operated valve. A cylinder has an annular groove opened to the relief line. When the valve is opened, the first chamber is opened to the relief line. A pressure difference is thus created between the first and the second chambers so as to move the spool valve to open. Thus fuel injection is stopped.

    摘要翻译: 一种有利地用于柴油发动机的燃料喷射系统中的流量控制装置。 流量控制装置包括滑阀,其在其侧面限定通过节气门彼此连接的第一和第二腔室。 第二室连接到连接燃料泵与燃料喷射器的高压管道,同时第一室通过电动阀选择性地打开到溢流管线。 圆柱体具有通向浮雕线的环形槽。 当阀门打开时,第一个室被打开到救生线。 因此,在第一和第二室之间产生压力差,以使滑阀移动打开。 因此燃料喷射停止。

    Flexible ceramic PTC electric heater assembly
    17.
    发明授权
    Flexible ceramic PTC electric heater assembly 失效
    柔性陶瓷PTC电加热器总成

    公开(公告)号:US4368380A

    公开(公告)日:1983-01-11

    申请号:US187941

    申请日:1980-09-16

    摘要: A flexible barium titanate ceramic PTC heater for use in, for example, an intake pipe of an internal combustion engine to heat the air-fuel gas mixture is formed as a thin disc-shaped ceramic sheet constituted by a plurality of individual coplanar ceramic segments having interior edges positioned in spaced side-by-side relationship. The juxtaposed edges of the ceramic segments are united to each other by a flexible, heat-resistant, electrically non-conductive rubber band disposed in the space between the segments and bonded thereto by an electrically non-conductive adhesive to form the segments into a thin disc-shaped sheet which can be flexed without causing flexing of any of the individual segments. The ceramic heater is positioned in a metallic casing with one planar face thereof bonded to the inner surface of the casing by an electrically conductive adhesive. A stainless steel wool cushioning member engages the other planar face of the ceramic heater to support the heater in the metallic casing.

    摘要翻译: 形成用于例如用于加热空气 - 燃料气体混合物的内燃机的进气管的柔性钛酸钡陶瓷PTC加热器作为由多个单独的共面陶瓷部件构成的薄盘形陶瓷片,所述多个单独的共面陶瓷片段具有 内部边缘以并排的关系定位。 陶瓷片段的并列边缘通过设置在片段之间的空间中的柔性,耐热,不导电的橡胶带彼此结合,并通过非导电粘合剂将其结合到其上,以将片段形成为薄的 盘形片材可以弯曲而不引起任何单个片段的弯曲。 陶瓷加热器位于金属壳体中,其一个平面通过导电粘合剂结合到壳体的内表面。 不锈钢棉绒缓冲构件与陶瓷加热器的另一个平面接合,以支撑金属外壳中的加热器。

    Fuel evaporator for internal combustion engine
    19.
    发明授权
    Fuel evaporator for internal combustion engine 失效
    内燃机燃油蒸发器

    公开(公告)号:US4450823A

    公开(公告)日:1984-05-29

    申请号:US491644

    申请日:1983-05-04

    IPC分类号: F02M31/135 H05B3/14 F02M31/00

    摘要: A fuel evaporator for an internal combustion engine, which is provided with a ceramic heater, is disclosed. The fuel evaporator comprises a plurality of layered thin PTC ceramic plates, each of which has a plurality of open holes, electrodes which are provided on an upper surface, an under surface and between adjacent ceramic plates, and an insulator for securing the outer periphery of the layered PTC ceramic plates to the wall defining an air-fuel passage of an engine. The ceramic plates are electrically connected to one another in parallel so that each ceramic plate is rapidly heated by consuming only a small amount of electric power.

    摘要翻译: 公开了一种用于内燃机的燃料蒸发器,其具有陶瓷加热器。 燃料蒸发器包括多个分层的薄PTC陶瓷板,每个均具有多个开孔,设置在上表面,下表面和相邻的陶瓷板之间的电极和用于固定外壳的绝缘体 层叠的PTC陶瓷板到限定发动机的空气燃料通道的壁。 陶瓷板彼此并联地电连接,使得每个陶瓷板通过仅消耗少量的电力而被快速加热。

    Intake manifold for multicylinder internal combustion engine
    20.
    发明授权
    Intake manifold for multicylinder internal combustion engine 失效
    多缸内燃机进气歧管

    公开(公告)号:US4359974A

    公开(公告)日:1982-11-23

    申请号:US173354

    申请日:1980-07-29

    摘要: An intake manifold for a multicylinder internal combustion engine having fuel supplying means such as a fuel injection device or a carburetor includes a branch intake conduits each communicating with one of the cylinders of the engine, an extension tube connected to a primary suction conduit of the carburetor, and an incoming fuel charge heating device mounted on the bottom of the intake manifold. The extension tube has a curved portion in its wall directed toward a part of the surface of the bottom of the intake manifold at which the axial center lines of the branch intake conduits gather together and cut to form an open end of the extension tube. The incoming fuel charge heating device has a heating surface disposed near the open end of the extension tube, which is smoothly curved toward the bottom of the intake manifold. The open end of the extension tube is disposed on a plane forming an acute angle with the wall of the tube at the outermost edge of the open end and contiguous at the innermost edge thereof with a straight portion of the wall of the tube, as viewed in cross section. The incoming fuel charge heating device may include positive-temperature-coefficient thermistors.

    摘要翻译: 具有诸如燃料喷射装置或化油器的燃料供给装置的多缸内燃机的进气歧管包括分别与发动机的气缸中的一个连通的分支进气管道,连接到化油器的主吸入管道的延伸管 ,以及安装在进气歧管底部的输入燃料加料装置。 延伸管在其壁中具有弯曲部分,其指向进气歧管底部的表面的一部分,在该部分处,分支进气管道的轴向中心线聚集在一起并切割以形成延伸管的开口端。 进料燃料加料装置具有设置在延伸管的开口端附近的加热面,该加热面朝向进气歧管的底部平滑弯曲。 延伸管的开口端设置在与开口端的最外边缘处的管的壁成锐角并且在其最内边缘处与管的壁的直线部分邻接的平面 在横截面。 输入燃料充电加热装置可以包括正温度系数热敏电阻。