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公开(公告)号：US4728074A
公开(公告)日：1988-03-01
申请号：US925251
申请日：1986-10-31
IPC分类号： F02M51/06 , F02D41/20 , F02D41/24 , F02D41/40 , F02M45/06 , F02M47/02 , F02M51/04 , F02M63/00 , F02M63/04 , F16K21/12 , H02N2/02
CPC分类号： F02D41/2096 , F02D41/2406 , F02D41/40 , F02M45/06 , F02M51/04 , F02M63/04 , F02M2200/21 , Y02T10/44
摘要： A piezoelectric flow control valve comprising a slidable closure member (22) for controlling a flow of fluid through a fluid passage (42) between a fluid inlet (40) and a fluid outlet (32). The closure member (22) is biased toward a normally closed position by a plunger (70) responsive to a hydraulic pressure in a pressure chamber (78) which is in fluid communication with the fluid inlet (40) through a restriction and with a pumping chamber (96) of a piezoelectric pump (72). In order to prevent fluid leakage under situations wherein the fluid pressure at the fluid inlet (40) is not high enough to ensure closure of the member (22), the present invention provides spring biased pressure mechanism (106) for biasing the closure member (22) toward the normally closed position and override means (130) for overriding the pressure mechanism (106) in response to a predetermined pressure at the fluid inlet (40).
摘要翻译： 一种压电流量控制阀，包括用于控制流体流过流体入口（40）和流体出口（32）之间的流体通道（42）的可滑动闭合构件（22）。 响应于压力室（78）中的液压，封闭构件（22）通过柱塞（70）被朝向常闭位置偏置，压力室（78）通过限制和泵送与流体入口（40）流体连通 压电泵（72）的室（96）。 为了在流体入口（40）处的流体压力不足以确保构件（22）的闭合的情况下防止流体泄漏，本发明提供了用于偏压闭合构件的弹簧偏置压力机构（106） 22）朝向常闭位置，并且用于响应于流体入口（40）处的预定压力来超压压力机构（106）的超驰装置（130）。
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2.发明授权Control apparatus for electroexpansive actuator enabling variation of stroke 失效用于电动膨胀致动器的控制装置，能够改变行程
公开(公告)号：US4732129A
公开(公告)日：1988-03-22
申请号：US850696
申请日：1986-04-11
CPC分类号： F02M47/06 , F02D41/2096 , F02B1/04 , F02B2075/027 , F02D2041/2003 , F02D2041/2006 , F02D2041/201 , F02D2041/2013 , F02D2041/2075 , F02M2200/21 , H02N2/06 , H02N2/067
摘要： A color apparatus includes an electroexpansive actuator, a unit for supplying a charge to the electroexpansive actuator, and a unit for controlling an amount of charge discharged from the electroexpansive actuator, and a stroke of the electroexpansive actuator is controlled in accordance with the amount of charge discharged therefrom. When such an electroexpansive actuator is applied to a control apparatus for a fuel injection valve, a fuel injection amount per ON/OFF operation of the fuel injection valve or a fuel injection rate can be freely controlled.
摘要翻译： 彩色装置包括电膨胀致动器，用于向电膨胀致动器提供电荷的单元和用于控制从电膨胀致动器排出的电荷量的单元，并且电膨胀致动器的行程根据电荷量来控制 从中排出。 当这种电膨胀式致动器被施加到用于燃料喷射阀的控制装置时，可以自由地控制燃料喷射阀的每次ON / OFF操作的燃料喷射量或燃料喷射速率。
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公开(公告)号：US4784102A
公开(公告)日：1988-11-15
申请号：US813463
申请日：1985-12-24
申请人： Toshihiko Igashira , Yasuyuki Sakakibara , Kazuhide Watanabe , Masahiro Takigawa , Toru Yoshinaga , Yukihiro Natsuyama , Shigeki Daido
发明人： Toshihiko Igashira , Yasuyuki Sakakibara , Kazuhide Watanabe , Masahiro Takigawa , Toru Yoshinaga , Yukihiro Natsuyama , Shigeki Daido
IPC分类号： F02B1/04 , F02B3/06 , F02B75/12 , F02D41/20 , F02M41/12 , F02M47/02 , F02M59/22 , F02M63/00 , F02M63/02 , H01L41/04 , F02M39/00
CPC分类号： F02M63/0225 , F02D41/2096 , F02M41/123 , F02M47/02 , F02M59/22 , F02B1/04 , F02B2075/125 , F02B3/06 , F02D41/408 , F02M2200/21 , Y02T10/123
摘要： A fuel injection system in which a fuel injector having a fuel pressure control chamber formed therein to create a pressure which forces a needle valve in the closing direction to open and close the nozzle hole, an accumulator to retain fuel discharged from the nozzle hole, and a fuel injector provided at each of the cylinders of the engine, are connected to the fuel injection pump by a single piping system without utilizing a special distribution mechanism. The volume of the fuel pressure control chamber in the fuel injector can be changed by a piezo-actuator. A check valve is provided at a half way point of the piping which leads the fuel fed under pressure from the fuel injection pump to the fuel injector into the fuel pressure control chamber and the accumulator, so that the fuel is fed through the check valve into the fuel pressure control chamber and the accumulator.
摘要翻译： 一种燃料喷射系统，其中燃料喷射器具有形成在其中的燃料压力控制室，以产生迫使针阀在关闭方向上打开和关闭喷嘴孔的压力，用于保持从喷嘴孔排出的燃料的蓄能器，以及 设置在发动机的每个气缸处的燃料喷射器通过单个管道系统连接到燃料喷射泵，而不使用特殊的分配机构。 燃料喷射器中的燃料压力控制室的体积可以通过压电致动器来改变。 在管道的一半点处设置止回阀，其将燃料供给的燃料从燃料喷射泵引导到燃料喷射器进入燃料压力控制室和蓄能器，使得燃料通过止回阀进入 燃料压力控制室和蓄能器。
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公开(公告)号：US4579283A
公开(公告)日：1986-04-01
申请号：US619193
申请日：1984-06-11
CPC分类号： F02M51/0603 , F02M2200/21 , F02M2200/703
摘要： A fuel injector for an internal combustion engine, the injector being actuated by a piezoelectric actuator. The piezoelectric actuator operates a piston, which changes the volume of a pump chamber formed between the piston and a nozzle needle. The nozzle needle moves up and down in response to a pressure in the pump chamber to open and close a port for injecting fuel. The piston is pressed toward the pump chamber by a fluidic force or a spring force and so on.
摘要翻译： 一种用于内燃机的燃料喷射器，所述喷射器由压电致动器致动。 压电致动器操作活塞，其改变形成在活塞和喷嘴针之间的泵室的容积。 喷嘴针响应于泵室中的压力而上下移动以打开和关闭用于喷射燃料的端口。 活塞通过流体力或弹簧力等压向泵室。
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公开(公告)号：US5638791A
公开(公告)日：1997-06-17
申请号：US561067
申请日：1995-11-22
CPC分类号： F02M47/02 , F02M47/025 , F02M47/027
摘要： A common-rail fuel injection system for an engine includes a fuel injector having a nozzle hole. A common rail stores high-pressure fuel. The common rail is connected to the fuel injector to feed the high-pressure fuel thereto. A movable nozzle needle disposed in the fuel injector blocks and unblocks the nozzle hole in accordance with movement thereof. A back pressure control chamber defined in the fuel injector is connected to the common rail to receive the high-pressure fuel therefrom. The nozzle needle is urged in a direction of blocking the nozzle hole in response to a pressure in the back pressure control chamber. A fuel chamber defined in the fuel injector is connected to the common rail to receive the high-pressure fuel therefrom. The nozzle needle is urged in a direction of unblocking the nozzle hole in response to a pressure in the fuel chamber. A fuel-pressure-responsive 2-way valve controls the pressure in the back pressure control chamber. An electromagnetic valve changes a state of the fuel-pressure-responsive 2-way valve. The fuel injector and the fuel-pressure-responsive 2-way valve are combined into a single unit. The electromagnetic valve is separate from the fuel injector.
摘要翻译： 用于发动机的共轨燃料喷射系统包括具有喷嘴孔的燃料喷射器。 共轨铁路存储高压燃油。 共轨连接到燃料喷射器以将高压燃料供给到燃料喷射器。 设置在燃料喷射器块中的可动喷嘴针，并且根据其移动来解除喷嘴孔的阻塞。 限定在燃料喷射器中的背压控制室连接到共轨以从其接收高压燃料。 响应于背压控制室中的压力，喷嘴针沿着堵塞喷嘴孔的方向被推动。 限定在燃料喷射器中的燃料室连接到共轨以从其接收高压燃料。 喷嘴针沿着在燃料室中的压力下解除喷嘴孔的方向被推动。 燃料压力响应二通阀控制背压控制室中的压力。 电磁阀改变了燃料压力响应二通阀的状态。 燃料喷射器和燃料压力响应二通阀组合成单个单元。 电磁阀与燃油喷射器分开。
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公开(公告)号：US5452858A
公开(公告)日：1995-09-26
申请号：US209104
申请日：1994-03-11
申请人： Yoshihiro Tsuzuki , Toshihiko Igashira , Yasuyuki Sakakibara , Kazuhide Watanabe , Takehiko Kato , Terutoshi Tomoda
发明人： Yoshihiro Tsuzuki , Toshihiko Igashira , Yasuyuki Sakakibara , Kazuhide Watanabe , Takehiko Kato , Terutoshi Tomoda
CPC分类号： F02M51/0603 , F02M2200/21 , F02M2200/703
摘要： A fuel injector wherein a piston driven by the extension and contraction of a piezoelectric actuator changes the pressure of a working fluid in a variable pressure chamber and back pressure chamber so as to drive a needle valve to open and close a fuel injection hole, wherein undesirable secondary injection after a main injection in prevented by providing a throttle portion for narrowing the communicating passage between the variable pressure chamber and back pressure chamber when the piston moves forward and the needle valve closes the fuel injection hole.
摘要翻译： 一种燃料喷射器，其中由压电致动器的伸缩驱动的活塞改变可变压力室和背压室中的工作流体的压力，以驱动针阀来打开和关闭燃料喷射孔，其中不期望的 通过在活塞向前移动并且针阀关闭燃料喷射孔时，通过设置用于使可变压力室和背压室之间的连通通道变窄的节流部来防止主喷射后的二次喷射。
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公开(公告)号：US4550744A
公开(公告)日：1985-11-05
申请号：US551693
申请日：1983-11-14
CPC分类号： F02M63/0007 , F02M59/105 , F02M59/468 , F16K31/007 , Y10T137/1987 , Y10T137/87981 , Y10T137/88046
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。
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公开(公告)号：US4480619A
公开(公告)日：1984-11-06
申请号：US501788
申请日：1983-06-07
CPC分类号： F02M41/125 , F02M59/105 , F02M59/36 , F02M59/366 , F02B3/06 , F02M2200/24
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。
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公开(公告)号：US5363816A
公开(公告)日：1994-11-15
申请号：US184060
申请日：1994-01-21
CPC分类号： F01L9/02 , F01L2001/34446 , F02B3/06
摘要： A hydraulic valve drive device for intake/exhaust valves of an internal combustion engine using an oil pump similar to a distributor type injection pump. A plunger rotates and engages in reciprocating motion to pressurize hydraulic fluid taken into a pressure chamber and opens to discharge the same into a hydraulic cylinder of a specific intake/exhaust valve in register with the passage. The intake/exhaust valve maintains its valve lift to continue remaining open when the supply of the hydraulic fluid is stopped, but closes when the plunger rotates so that the passage is communicated with a relief channel and the relief valve opens.
摘要翻译： 一种使用类似于分配器型注射泵的油泵的内燃机的进气/排气阀的液压阀驱动装置。 柱塞旋转并接合往复运动，以将进入压力室的液压流体加压并打开以将其排放到与通道对准的特定进气/排气阀的液压缸中。 当液压油的供给停止时，进气/排气阀保持其气门升程继续保持打开，而当柱塞旋转时关闭，使得通道与释放通道连通并且安全阀打开。
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公开(公告)号：US4529164A
公开(公告)日：1985-07-16
申请号：US470540
申请日：1983-02-28
CPC分类号： F02M63/0007 , F02M59/366 , F02M63/0026
摘要： A piezo-type valve with piezo-elements as a valve actuator. The piezo-elements are interposed by two freely movable pistons. A pressure chamber is formed on the outer side of one of the pistons to limit its outward movement. Thus, the substantial part of the expansion of the piezo-elements is transmitted to the other piston. The other piston is connected to a valve element. At least one flow port and a relief port are formed in the valve body. When voltage is applied to the piezo-elements, the at least one flow port and the relief port are communicated.
摘要翻译： 具有压电元件作为阀门执行器的压电式阀。 压电元件由两个可自由移动的活塞插入。 在一个活塞的外侧形成有压力室，以限制其向外运动。 因此，压电元件的大部分膨胀传递到另一个活塞。 另一个活塞连接到阀元件。 在阀体中形成至少一个流动口和释放口。 当电压施加到压电元件时，至少一个流动端口和释放端口被连通。
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