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1.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
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 。
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公开(公告)号：US5284121A
公开(公告)日：1994-02-08
申请号：US917209
申请日：1992-07-22
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。
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3.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。
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公开(公告)号：US4635849A
公开(公告)日：1987-01-13
申请号：US729144
申请日：1985-04-30
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。
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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：US4887569A
公开(公告)日：1989-12-19
申请号：US187638
申请日：1988-04-28
申请人： Toshihiko Igashira , Yasuyuki Sakakibara , Seiko Abe , Kiyonori Sekiguchi , Akihiro Izawa , Hisasi Kawai
发明人： Toshihiko Igashira , Yasuyuki Sakakibara , Seiko Abe , Kiyonori Sekiguchi , Akihiro Izawa , Hisasi Kawai
IPC分类号： F02B3/06 , F02D41/20 , F02D41/40 , F02M41/12 , F02M45/06 , F02M55/02 , F02M59/44 , H01L41/04
CPC分类号： F02D41/40 , F02D41/2096 , F02M41/123 , F02M45/06 , F02M55/02 , F02M59/447 , H02N2/06 , H02N2/062 , H02N2/067 , F02B3/06 , F02D41/408 , Y02T10/44
摘要： An electrostrictive actuator which can be used, e.g., in a distributor type fuel injection device of a diesel engine has an electrostrictive actuator for generating an electric charge upon reception of a load and an electric circuit unit connected to the electrostrictive actuator. The electric circuit unit has an electric charge changing means for changing the electric charge of the electrostrictive actuator in the state of generation of electric charge due to a load exerted on the electrostrictive actuator and thereby constricting the electrostrictive actuator, and an electrical charging means for charging the electrostrictive actuator in the state of constriction due to the operation of the electric charge changing means when the load exerted on the electrostrictive actuator is reduced and thereby extending the electrostrictive actuator.
摘要翻译： 可以使用例如在柴油发动机的分配式燃料喷射装置中的电致伸缩致动器具有用于在接收负载时产生电荷的电致伸缩致动器以及连接到电致伸缩致动器的电路单元。 电路单元具有电荷改变装置，用于在施加在电致伸缩致动器上的负载产生电荷的状态下改变电致伸缩致动器的电荷，从而使电致伸缩致动器收缩，并且充电装置用于充电 当施加在电致伸缩致动器上的负载减小并且由此延伸电致伸缩致动器时，由于电荷改变装置的操作而处于收缩状态的电致伸缩致动器。
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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）。
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公开(公告)号：US4748954A
公开(公告)日：1988-06-07
申请号：US754750
申请日：1985-07-15
申请人： Toshihiko Igashira , Yasuyuki Sakakibara , Seiko Abe , Kiyonori Sekiguchi , Akihiro Izawa , Hisasi Kawai
发明人： Toshihiko Igashira , Yasuyuki Sakakibara , Seiko Abe , Kiyonori Sekiguchi , Akihiro Izawa , Hisasi Kawai
IPC分类号： F02B3/06 , F02D41/20 , F02D41/40 , F02M41/12 , F02M45/06 , F02M55/02 , F02M59/44 , H01L41/04 , F02M39/00
CPC分类号： F02D41/40 , F02D41/2096 , F02M41/123 , F02M45/06 , F02M55/02 , F02M59/447 , H02N2/06 , H02N2/062 , H02N2/067 , F02B3/06 , F02D41/408 , Y02T10/44
摘要： An electrostrictive actuator which can be used, e.g., in a distributor type fuel injection device of a diesel engine has an electrostrictive actuator for generating an electric charge upon reception of a load and an electric circuit unit connected to the electrostrictive actuator. The electric circuit unit has an electric charge changing means for changing the electric charge of the electrostrictive actuator in the state of generation of electric charge due to a load exerted on the electrostrictive actuator and thereby constricting the electrostrictive actuator, and an electrical charging means for charging the electrostrictive actuator in the state of constriction due to the operation of the electric charge changing means when the load exerted on the electrostrictive actuator is reduced and thereby extending the electrostrictive actuator.
摘要翻译： 可以使用例如在柴油发动机的分配式燃料喷射装置中的电致伸缩致动器具有用于在接收负载时产生电荷的电致伸缩致动器以及连接到电致伸缩致动器的电路单元。 电路单元具有电荷改变装置，用于在施加在电致伸缩致动器上的负载产生电荷的状态下改变电致伸缩致动器的电荷，从而使电致伸缩致动器收缩，并且充电装置用于充电 当施加在电致伸缩致动器上的负载减小并且由此延伸电致伸缩致动器时，由于电荷改变装置的操作而处于收缩状态的电致伸缩致动器。
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9.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。
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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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