-
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。
-
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。
-
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。
-
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。
-
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。
-
6.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
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。
-
公开(公告)号：US4793314A
公开(公告)日：1988-12-27
申请号：US92204
申请日：1987-09-02
CPC分类号： F02M59/366 , F02M41/125 , F02M59/468
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）。
-
8.发明授权
公开(公告)号：US4610427A
公开(公告)日：1986-09-09
申请号：US723896
申请日：1985-04-16
CPC分类号： F02D41/2096 , F02D41/403 , F02M41/125 , F02M59/366 , F02M59/468 , F02B3/06 , F02D41/402 , F02D41/408 , Y02T10/44
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。
-
公开(公告)号：US4590908A
公开(公告)日：1986-05-27
申请号：US667344
申请日：1984-11-01
CPC分类号： F02M41/125 , F02D41/408 , F02M59/366 , F02B3/06 , Y02T10/44
摘要： A system for control of the amount of fuel to be injected in an internal combustion engine uses a high-pressure pump and a fuel control valve mechanism for spill having an electromagnetic valve and an oil-pressure valve. A predetermined delay time is added to the control timing of the current supply to the fuel control valve mechanism for spill, thus achieving the injection of the required amount of fuel at the most appropriate timing.
摘要翻译： 用于控制在内燃机中喷射的燃料量的系统使用具有电磁阀和油压阀的溢流的高压泵和燃料控制阀机构。 将预定的延迟时间添加到向燃料控制阀机构供电的控制定时，从而在最合适的时刻实现所需量的燃料喷射。
-
公开(公告)号：US4603671A
公开(公告)日：1986-08-05
申请号：US639433
申请日：1984-08-10
CPC分类号： F02M59/105 , F02M47/027 , F02M47/043
摘要： An electronically controllable, ultra-high pressure fuel injector comprises a differential pressure type injection nozzle which is opened and closed by an actuating element operated by a hydraulic power cylinder including a piston received in a working chamber. Working fuel to the working chamber of the power cylinder is ON/OFF controlled by an electronically controllable solenoid valve which when energized releases the pressure in the working chamber to open the injection nozzle. In order to ensure that the power cylinder is controlled by a compact, high response solenoid valve, the construction of the power cylinder and the injection nozzle is such that the force applied to the power cylinder piston by the working fuel pressure in the working chamber is substantially greater than the force applied to the actuating element by the fuel pressure in the pressure chamber in the injection nozzle or the fuel pressure in the passage for supplying the working fuel. Preferably, the fuel injector is provided with an injection rate control arrangement such as a flow control arrangement for limiting the flow rate of working fuel as it enters the working chamber and for increasing the flow rate of the working fuel as it is released therefrom, so that the rate of injection increases gradually at the outset of fuel injection but rapidly drops at the completion of the injection.
摘要翻译： 电子可控的超高压燃料喷射器包括压差式喷射喷嘴，其通过由包括接收在工作室中的活塞的液压动力油缸操作的致动元件而打开和关闭。 通过电子可控电磁阀控制动力缸工作室的工作燃油，当通电时释放工作室中的压力以打开喷嘴。 为了确保动力缸由紧凑，高响应的电磁阀控制，动力缸和注射喷嘴的结构使得通过工作室中的工作燃料压力施加到动力缸活塞的力是 明显大于通过喷射喷嘴中的压力室中的燃料压力或用于供应工作燃料的通道中的燃料压力施加到致动元件的力。 优选地，燃料喷射器设置有喷射速率控制装置，例如用于限制工作燃料进入工作室的流量的流量控制装置，并且用于当工作燃料从其释放时增加工作燃料的流量，因此 注射速率在燃料喷射开始时逐渐增加，但在注射完成时迅速下降。
-
-
-
-
-
-
-
-
-
搜索结果
61 条记录 (耗时 0.022 秒)