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    • 1. 发明授权
    • Multi-gap spark ignition device for engine
    • 发动机多间隙火花点火装置
    • US4470392A
    • 1984-09-11
    • US482707
    • 1983-04-06
    • Toru YoshinagaToshihiko IgashiraHisasi KawaiSeiji MorinoNorihiko Nakamura
    • Toru YoshinagaToshihiko IgashiraHisasi KawaiSeiji MorinoNorihiko Nakamura
    • F02P15/08F02P15/02F02M25/06
    • F02P15/08
    • A multi-gap spark ignition device to be installed in a spark ignition engine, is disclosed. The device comprises a metallic base member provided with a hole which forms one portion of the combustion chamber of the engine. Within the wall defining the hole, a high voltage electrode, a plurality of intermediate electrodes and an earth electrode are embedded at regular intervals so that each end of the electrodes project into the hole to form a plurality of spark gaps between the adjacent ends of the electrodes. Each of the intermediate electrodes is composed of an electrode member and an insulating member for covering one end of the electrode member, and is closely inserted into a groove formed in one end surface of the base member along the hole thereof at regular intervals. By making the stray electrostatic capacity between the base member and the opposed electrode member of each intermediate electrode larger than the electrostatic capacity between the adjacent electrode members, the required voltage can be maintained small irrespective of the number of the intermediate electrodes.
    • 公开了一种安装在火花点火发动机中的多间隙火花点火装置。 该装置包括设置有形成发动机的燃烧室的一部分的孔的金属基座构件。 在限定孔的壁内,以规则的间隔嵌入高电压电极,多个中间电极和接地电极,使得电极的两端突出到孔中,以在相邻的端部之间形成多个火花隙 电极。 每个中间电极由电极构件和用于覆盖电极构件的一端的绝缘构件组成,并且以规则的间隔沿其孔紧密地插入形成在基底构件的一个端面中的凹槽中。 通过使基部构件与各中间电极的对置电极构件之间的杂散静电电容大于相邻的电极构件之间的静电电容,不管中间电极的数量如何,所需的电压可以保持较小。
    • 8. 发明授权
    • Fuel injection pump for an internal combustion engine
    • 用于内燃机的燃油喷射泵
    • US4793314A
    • 1988-12-27
    • US92204
    • 1987-09-02
    • Toru YoshinagaToshihiko IgashiraYasuyuki SakakibaraSeiko AbeYukihiro Natsuyama
    • Toru YoshinagaToshihiko IgashiraYasuyuki SakakibaraSeiko AbeYukihiro Natsuyama
    • F02D1/02F02D1/18F02M41/12F02M59/36F02M59/46F16K31/02F02M39/00
    • F02M59/366F02M41/125F02M59/468
    • 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.
    • 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)。
    • 9. 发明授权
    • Piezoelectric control valve for fuel injector of internal combustion
engine
    • 内燃机燃油喷射器用压电控制阀
    • US4610427A
    • 1986-09-09
    • US723896
    • 1985-04-16
    • Toshihiko IgashiraYasuyuki SakakibaraToru YoshinagaSeiko AbeYukihiro Natsuyama
    • Toshihiko IgashiraYasuyuki SakakibaraToru YoshinagaSeiko AbeYukihiro Natsuyama
    • F02B3/06F02D41/20F02D41/40F02M41/12F02M59/36F02M59/46F16K31/02
    • F02D41/2096F02D41/403F02M41/125F02M59/366F02M59/468F02B3/06F02D41/402F02D41/408Y02T10/44
    • 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.
    • 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。
    • 10. 发明授权
    • Piezoelectric hydraulic control valve
    • 压电式液压控制阀
    • US4550744A
    • 1985-11-05
    • US551693
    • 1983-11-14
    • Toshihiko IgashiraYasuyuki SakakibaraToru YoshinagaSeiko AbeKazuhide Watanabe
    • Toshihiko IgashiraYasuyuki SakakibaraToru YoshinagaSeiko AbeKazuhide Watanabe
    • F02M59/10F02M59/46F02M63/00F16K31/00F16K17/38
    • F02M63/0007F02M59/105F02M59/468F16K31/007Y10T137/1987Y10T137/87981Y10T137/88046
    • 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.
    • 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。