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公开(公告)号：US4750462A
公开(公告)日：1988-06-14
申请号：US873002
申请日：1986-06-11
申请人： Walter Egler , Jean Leblanc , Helmut Pfeifle , Jean Pigeroulet , Francois Rossignol , Dietrich Trachte
发明人： Walter Egler , Jean Leblanc , Helmut Pfeifle , Jean Pigeroulet , Francois Rossignol , Dietrich Trachte
CPC分类号： F02M55/04 , F02M57/02 , F02M59/462 , F02B2275/14 , Y02T10/123
摘要： A fuel injection apparatus which the termination of the effective pump supply stroke is effected by exposing a relief conduit with the aid of a valve having for instance a control edge, whereupon a highly pressurized fuel flows out via the relief conduit and is directed into a pressure chamber defined by a rear face of a pressure valve closing member. The pressure valve closing member is located in a connection with a fuel injection line that leads from the pump work chamber to the fuel injection valve and is acted upon by a valve spring to effect closing of this injection line. The impact of fuel that reaches the pressure chamber via the releif conduit reinforces a fast closure of the pressure valve closing member at the end of injection, which leads to an abrupt termination of an injection cycle. In addition, or altenatively, the fuel injection valve closing member can also be acted upon by the impact of fuel diversion.
摘要翻译： 通过借助于具有例如控制边缘的阀暴露释放管道来实现有效泵供给冲程的终止的燃料喷射装置，于是高压燃料经由泄压管流出并被引导到压力 室由压力阀关闭构件的后表面限定。 压力阀关闭构件位于与从泵工作室引导到燃料喷射阀的燃料喷射管的连接处，并且由阀弹簧作用，以实现该注入管线的闭合。 通过相关管道到达压力室的燃料的影响加强了注射结束时压力阀关闭件的快速关闭，这导致喷射循环的突然终止。 此外，或者说，燃油喷射阀关闭部件也可以通过燃料分流的影响而起作用。
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公开(公告)号：US4805580A
公开(公告)日：1989-02-21
申请号：US870468
申请日：1986-06-04
CPC分类号： F02M57/02 , F02M55/04 , F02M59/366 , F02M59/462 , F02B2275/14 , Y02T10/123
摘要： A fuel injection device having a pump piston which during the supply stroke pumps fuel from a pump work chamber into an injection line which leads to a fuel injection valve. Directly adjacent to the branching off of the injection line from the pump work chamber, at the diameter of the injection line, a valve seat is provided, at which the injection line then merges with a chamber into which a pressure valve closing member plunges. The valve closing member is tightly guided in a guide bore, loaded by a valve spring, and in the chamber has a pressure shoulder adjoining the sealing surface that cooperates with the valve seat. The rear side of the pressure valve closing member communicates with a continuously open relief line. Because of this construction, the pressure valve closing member operates as an equal-pressure valve and simultaneously as a deflecting piston as well, with the aid of which a pressure rise in the pump work chamber is built up in a retarded manner until such time as the pressure valve closing member comes to rest on a stop. A pressure rise of this type is particularly advantageous in connection with control of the injection phase by means of a magnetic valve subjected to the high pressure.
摘要翻译： 具有泵活塞的燃料喷射装置，其在供给冲程期间将来自泵工作室的燃料泵送到通向燃料喷射阀的喷射管线。 在喷射管直径处，直接与喷射管路分离出的离开泵入口管线的直径相同，设置有一个阀座，在该阀座处，注射管线与压力阀关闭件所在的腔室合并。 阀关闭构件被紧密地引导在由阀弹簧加载的引导孔中，并且在腔室中具有邻接与阀座配合的密封表面的压力肩部。 压力阀关闭构件的后侧与连续打开的浮雕线连通。 由于这种结构，压力阀关闭部件作为等压阀工作，同时作为偏转活塞，借助于此，泵工作室中的压力上升以延迟的方式被建立，直到 压力阀关闭件在停止时停止。 这种类型的压力上升与通过经受高压的电磁阀控制喷射相相关是特别有利的。
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公开(公告)号：US4903666A
公开(公告)日：1990-02-27
申请号：US281144
申请日：1988-12-06
CPC分类号： F02M57/02 , F02M55/04 , F02M59/366 , F02M59/462 , F02B2275/14 , Y02T10/123
摘要： A fuel injection device having a pump piston which during the supply stroke pumps fuel from a pump work chamber into an injection line which leads to a fuel injection valve. Directly adjacent to the branching off of the injection line from the pump work chamber, at the diameter of the injection line, a valve seat is provided, at which the injection line then merges with a chamber into which a pressure valve closing member plunges. The valve closing member is tightly guided in a guide bore, loaded by a valve spring, and in the chamber has a pressure shoulder adjoining the sealing surface that cooperates with the valve seat. The rear side of the pressure valve closing member communicates with a continuously open relief line. Because of this construction, the pressure valve closing member operates as an equal-pressure valve and simultaneously as a deflecting piston as well, with the aid of which a pressure rise in the pump work chamber is built up in a retarded manner until such time as the pressure valve closing member comes to rest on a stop. A pressure rise of this type is particularly advantageous in connection with control of the injection phase by means of a magnetic valve subjected to the high pressure.
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公开(公告)号：US4571161A
公开(公告)日：1986-02-18
申请号：US714233
申请日：1985-03-21
CPC分类号： F02M57/023 , F02M57/02 , F02M59/28 , F02M61/14
摘要： The pump/nozzle unit for a fuel injection system is disclosed which has a pump piston that is driven via a drive tappet and is rotatable by means of a regulating sleeve. The regulating sleeve, provided with a radially protruding control lever arm, is axially secured in its installed position by means of a guide bushing. The guide bushing includes a guide part for the drive tappet and a radially protruding flange, which is secured to the pump housing by at least one holder passing through an oblong slot on the flange of the guide bushing. A recess in the form of a circular segmented ring is cut out of the guide bushing for the passage therethrough of the control lever arm. By rotating the guide bushing within a range limited by the oblong slot a lateral limiting edge of the recess is adjustable into a position in which the pump piston, with the control lever arm resting on the limiting edge assumes a rotational position associated with a fixed supply quantity. As a result, no further additional or full-load stop device is necessary and mounting of the drive unit and pump assembly on the engine are facilitated.
摘要翻译： 公开了一种用于燃料喷射系统的泵/喷嘴单元，其具有通过驱动挺杆驱动并且可通过调节套筒旋转的泵活塞。 设置有径向突出的控制杆臂的调节套筒通过导向轴套轴向固定在其安装位置。 引导衬套包括用于驱动挺杆的引导部件和径向突出的凸缘，其通过穿过引导衬套的凸缘上的长方形槽的至少一个保持件固定到泵壳体。 从导向衬套中切出圆形分段环形式的凹槽，用于通过控制杆臂的通道。 通过在由长方形狭缝限制的范围内旋转引导衬套，凹部的侧向限制边缘可调节到这样的位置，其中控制杆臂搁置在限制边缘上的泵活动呈现与固定供给相关联的旋转位置 数量。 因此，不需要进一步的附加或全负载停止装置，并且促进驱动单元和泵组件安装在发动机上。
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公开(公告)号：US4648556A
公开(公告)日：1987-03-10
申请号：US630908
申请日：1984-07-13
CPC分类号： F02M59/48 , F02M57/02 , F02M57/023 , F02M59/28
摘要： A pump/nozzle unit having a piston injection pump and an injection nozzle which includes a pump piston that is driven via a drive tappet and is rotatable via a regulating sleeve. The regulating sleeve is inserted into a recess on the end face of the pump housing and is axially secured in its installed state by means of a guide bushing. The guide bushing comprises a guide part for the drive tappet and a flange radially protruding beyond the outer diameter of the tappet spring, the flange being secured on the pump housing by a holder mechanism. The forces exerted upon the pump/nozzle unit during operation are absorbed by a securing arrangement. The drive assembly unit, including the drive tappet, tappet spring, guide bushing and pump piston, which is held together by a loss-preventing device, can be mounted outside the pump/nozzle unit and removed as a unit for purposes of mounting and inspecting the regulating sleeve, and even in the demounted or disassembled state of the pump/nozzle unit this drive assembly unit remains joined to the pump/nozzle unit by the holder mechanism.
摘要翻译： 一种具有活塞注射泵和注射喷嘴的泵/喷嘴单元，其包括经由驱动挺杆驱动并且可经由调节套筒旋转的泵活塞。 调节套筒插入泵壳体的端面上的凹槽中，并通过导向套筒轴向固定在其安装状态。 引导衬套包括用于驱动挺杆的引导部分和径向突出超过挺杆弹簧的外径的凸缘，凸缘通过保持器机构固定在泵壳体上。 在操作期间施加在泵/喷嘴单元上的力被固定装置吸收。 驱动组件单元，包括驱动挺杆，挺杆弹簧，引导衬套和泵活塞，其由防损装置保持在一起，可以安装在泵/喷嘴单元的外部，并作为一个单元被移除以用于安装和检查 调节套筒，甚至在泵/喷嘴单元的拆卸或拆卸状态下，该驱动组件单元通过保持器机构保持接合到泵/喷嘴单元。
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6.发明授权Electrically controlled unit fuel injector for fuel injection in diesel engines 失效用于柴油发动机燃料喷射的电控单元燃油喷射器
公开(公告)号：US4669659A
公开(公告)日：1987-06-02
申请号：US775866
申请日：1985-09-13
CPC分类号： F02M59/44 , F02M57/02 , F02M57/023 , F02M59/366
摘要： The unit fuel injector has a pump piston driven at a constant stroke length, which pumps fuel at injection pressure to an injection nozzle as long as an electrically actuated overflow valve blocks the flow of the fuel flowing from the pump work chamber to a low-pressure chamber via an overflow conduit. The overflow valve is inserted between a first section which communicates continuously with the pump work chamber and a second section leading to the low-pressure chamber of the overflow conduit and is secured to a housing part laterally projecting from the pump housing. The first section of the overflow conduit comprises a connecting bore leading away from the pump work chamber, a control conduit controlled by the overflow valve, and a transverse conduit connecting these two. The transverse conduit extends from the housing side remote from the projecting housing part to the control conduit, crossing through the cylinder bore and in every stroke position of the pump piston is sealed off, without additional sealing means, by the jacket face of the pump piston. The unit fuel injector is particularly suitable for high-pressure injection in Diesel engines.
摘要翻译： 单元燃料喷射器具有以恒定的行程长度驱动的泵活塞，其将注射压力的燃料泵送到喷射喷嘴，只要电致动的溢流阀阻止从泵工作室流动的燃料的流动到低压 通过溢流管道。 溢流阀插入在与泵工作室连续连通的第一部分和通向溢流导管的低压室的第二部分之间，并且固定到从泵壳侧向突出的壳体部分。 溢流管道的第一部分包括远离泵工作室的连接孔，由溢流阀控制的控制管道和连接这两个的横向管道。 横向导管从壳体侧远离突出壳体部分延伸到控制管道，穿过气缸孔，并且在泵活塞的每个行程位置中，泵活塞的护套面没有额外的密封装置而被密封 。 单元燃油喷射器特别适用于柴油发动机的高压喷射。
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7.发明授权Fuel injection apparatus for internal combustion engines, in particular for diesel engines 失效用于内燃机的燃料喷射装置，特别是柴油发动机
公开(公告)号：US4387686A
公开(公告)日：1983-06-14
申请号：US223954
申请日：1981-01-27
申请人： Jean Leblanc , Jean Pigeroulet , Max Straubel , Konrad Eckert
发明人： Jean Leblanc , Jean Pigeroulet , Max Straubel , Konrad Eckert
CPC分类号： F02M59/365 , F02M59/36 , F02B3/06
摘要： A fuel injection apparatus (FIG. 1) for internal combustion engines is proposed, in which the onset and end of injection are determined by means of a hydraulically actuated control slide. The injection pumps of the apparatus, preferably combined with an injection nozzle to make a pump/nozzle unit, have a central control fuel source represented by a supply pump and a first pressure limitation valve, which generates a control pressure (p.sub.S) actuating the control slide which is several times greater than the supply pressure (p.sub.V) determined by a second pressure limitation valve. In order to initiate the onset of injection, the control slide is placed under control pressure (p.sub.S) by a valve assembly via a distributor apparatus and closes an overflow channel leading out of the pump work chamber. In order to control the end of injection, the control slide during its return stroke again relieves this overflow channel toward a low-pressure line. The control pressure (p.sub.S) in the control pressure line required for actuating the stroke movement of the control slide is established by means of blocking the outflow out of this line by means of the valve assembly.
摘要翻译： 提出了一种用于内燃机的燃料喷射装置（图1），其中喷射的开始和结束通过液压致动的控制滑块来确定。 设备的注射泵优选地与注射喷嘴组合以制造泵/喷嘴单元，具有由供应泵和第一压力限制阀表示的中央控制燃料源，其产生致动控制器的控制压力（pS） 滑动比由第二压力限制阀确定的供给压力（pV）大几倍。 为了启动喷射开始，控制滑块经由分配器装置通过阀组件置于控制压力（pS）下，并且关闭从泵工作室引出的溢流通道。 为了控制注射的结束，控制滑块在其返回行程中再次将该溢流通道朝向低压管线释放。 通过借助于阀组件将流出物从该管路阻断出来，来建立用于致动控制滑块的行程运动所需的控制压力线中的控制压力（pS）。
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公开(公告)号：US4538580A
公开(公告)日：1985-09-03
申请号：US543660
申请日：1983-10-19
申请人： Max Straubel , Hermann Eisele , Jean Leblanc , Jean Pigeroulet
发明人： Max Straubel , Hermann Eisele , Jean Leblanc , Jean Pigeroulet
CPC分类号： F02M41/063 , F02M59/366
摘要： A fuel injection pump for internal combustion engines in which by means of an obliquely extending control groove on the jacket face of a distributor, the end of injection can be varied by opening a relief conduit during the displacement of the distributor. The injection onset is made to follow this variable end of injection by providing that the stroke position of the pump pistons of the fuel injection pump is ascertained at the end of injection by a transducer, by means of which at the same time a metering duration of a magnetic valve that has already been opened at the time of the end of the injection stroke is controlled. In this manner, with a radial piston pump so embodied, the opportunity is afforded of accurately adjusting the quantity of fuel to be metered by means of a magnetic valve, even with variable injection times. All that needs to be done is that the magnetic valve be closed exactly and rapidly at the end of metering, while an error in opening on the part of the magnetic valve does not occur. In this manner, a very precise metering of the fuel to be injected is attained with simple means.
摘要翻译： 一种用于内燃机的燃料喷射泵，其中通过在分配器的护套面上的倾斜延伸的控制槽，可以通过在分配器移位期间打开释放导管来改变喷射端。 通过提供在注射结束时确定燃料喷射泵的泵活塞的冲程位置，通过换能器来确定注射开始跟随该可变的注射端，同时通过该换能器的计量持续时间 控制在注射冲程结束时已经打开的电磁阀。 以这种方式，通过如此体现的径向活塞泵，即使具有可变的喷射时间，也可以通过电磁阀精确地调节待计量的燃料的量。 所有这些都需要做的是在计量结束时，电磁阀被精确而快速地关闭，而不会发生磁阀部分的打开错误。 以这种方式，通过简单的方法可以获得要注入的燃料的非常精确的计量。
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9.发明授权Fuel injection apparatus for internal combustion engines, in particular for diesel engines 失效用于内燃机的燃料喷射装置，特别是柴油发动机
公开(公告)号：US4398519A
公开(公告)日：1983-08-16
申请号：US276747
申请日：1981-06-24
申请人： Raymond Tissot , Jean Leblanc , Jean Pigeroulet
发明人： Raymond Tissot , Jean Leblanc , Jean Pigeroulet
CPC分类号： F02M59/365 , F02B3/06
摘要： A fuel injection apparatus for internal combustion engines is proposed in which the onset and end of injection are determined by a hydraulically actuated control slide. The injection pumps of the apparatus, which are preferably combined with an injection nozzle to make a pump/nozzle unit have a central control pressure pump supplied with fuel by a supply pump. The control pressure pump creates a control pressure (p.sub.S) which is a multiple increase in comparison to the supply pressure (p.sub.V) of the supply pump and actuates the control slide. Each control slide is placed under control pressure (p.sub.S) to initiate the onset of injection via a control line which is separated from the filling lines of the injection pump and closes an overflow channel which leads away from the pump work chamber. At the end of injection the control slide again relieves this overflow channel to a supply line during its return stroke.
摘要翻译： 提出了一种用于内燃机的燃料喷射装置，其中喷射的开始和结束由液压致动的控制滑块确定。 设备的注射泵优选地与注射喷嘴组合以制造泵/喷嘴单元，其具有由供应泵供应燃料的中央控制压力泵。 控制压力泵产生与供给泵的供给压力（pV）相比多次增加的控制压力（pS）并且致动控制滑块。 每个控制滑块置于控制压力（pS）下，通过与注射泵的填充管线分离的控制管线启动注射开始，并且关闭从泵工作室引出的溢流通道。 在注射结束时，控制滑块在其返回行程期间再次将该溢流通道释放到供应管线。
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公开(公告)号：US4473048A
公开(公告)日：1984-09-25
申请号：US482744
申请日：1983-04-07
申请人： Jean Leblanc , Jean Pigeroulet
发明人： Jean Leblanc , Jean Pigeroulet
CPC分类号： F02M41/066 , F02D41/401 , F02B3/06 , F02D41/408 , Y02T10/44
摘要： A fuel injection pump is proposed which has a distributor in which both the injection quantity and the onset of injection are variable. The distributor is axially displaced via electric servomotors and is rotated relative to the drive shaft.
摘要翻译： 提出了一种燃料喷射泵，其具有注射量和注射开始都可变的分配器。 分配器通过电动伺服电动机轴向移动并相对于驱动轴转动。
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