公开(公告)号：US4531676A

公开(公告)日：1985-07-30

申请号：US421196

申请日：1982-09-22

Applicant: Kurt Seifert ,  Karl Hofmann

Inventor： Kurt Seifert ,  Karl Hofmann

IPC: F02M61/08 ,  F02M61/20 ,  F02M63/00 ,  F02M61/16

CPC classification number: F02M61/205 ,  F02M61/08 ,  F02M2200/304

Abstract: A fuel injection nozzle for internal combustion engines, having a valve needle arranged to open toward the outside and said valve needle further connected with a piston which defines a fuel-filled damping chamber, which communicates with the flow path of the fuel only via a throttle conduit during the opening stroke of the valve needle. The damping chamber is formed in a cap which is placed onto the piston. As a result, jamming of the elements in the radial direction is avoided. Furthermore, the piston may be embodied by the valve needle per se, resulting in a simple and space-saving construction. By means of the appropriate embodiment and supporting of the cap, the damping effect can be limited dependent on the stroke and/or the travel speed of the valve needle.

Abstract translation: 一种用于内燃机的燃料喷射喷嘴，其具有被设置为朝向外部打开的阀针，并且所述阀针进一步与限定燃料填充阻尼室的活塞连接，该活塞仅通过节气门与燃料的流动路径连通 在阀针的打开行程期间的导管。 阻尼室形成在放置在活塞上的盖中。 结果，避免了元件在径向上的干扰。 此外，活塞可以由阀针本身实现，从而形成简单且节省空间的结构。 通过适当的实施例和支撑盖，根据阀针的行程和/或行进速度可以限制阻尼效果。

公开(公告)号：US4516729A

公开(公告)日：1985-05-14

申请号：US421195

申请日：1982-09-22

Applicant: Paul Fussner ,  Karl Hofmann ,  Iwan Komaroff ,  Katsuoki Itoh ,  Kurt Seifert ,  Dietrich Trachte ,  Wilhelm Vogel ,  Hans-Jorg Vogtmann

Inventor： Paul Fussner ,  Karl Hofmann ,  Iwan Komaroff ,  Katsuoki Itoh ,  Kurt Seifert ,  Dietrich Trachte ,  Wilhelm Vogel ,  Hans-Jorg Vogtmann

IPC: F02M45/08 ,  F02M45/12 ,  F02M61/08 ,  F02M61/10 ,  F02M61/16 ,  B05B1/32

CPC classification number: F02M45/12 ,  F02M45/08 ,  F02M61/08

Abstract: A fuel injection nozzle for internal combustion engines having a valve needle which enters an intermediate position in a retarded fashion and subsequently reaches its final position quickly. The valve needle is coupled in a positively-engaged manner with a supplementary body which as a result of its mass and/or hydraulically damps the movement of the valve needle over the course of a first stroke portion. At the end of this stroke portion, the supplementary body strikes a shoulder attached to the housing, whereupon the valve needle after the attainment of a notably higher fuel pressure, is separated from the supplementary body and translated quickly into its open position. In special cases, it is also possible for two supplementary bodies to be provided, which are uncoupled one after another from the valve needle and then again recoupled to the valve upon the closure of the valve. With an apparatus of this kind, the injection procedure can be adapted more freely than in the case of the known injection nozzles to a desired course.

Abstract translation: 一种用于内燃机的燃料喷射喷嘴，其具有以更迟的方式进入中间位置并随后快速到达其最终位置的阀针。 阀针以正向接合的方式与辅助体联接，辅助体由于其质量和/或液压地阻止阀针在第一冲程部分的运动过程中的运动。 在该行程部分的末端，补充体撞击附接到壳体的肩部，由此获得显着较高的燃料压力之后的阀针与补充体分离并迅速转换到其打开位置。 在特殊情况下，也可以提供两个辅助体，这两个辅助体从阀针一个接一个地分离，然后在阀闭合时再次重新连接到阀上。 使用这种装置，与已知的喷嘴的情况相比，注射程序可以更自由地适应于期望的过程。

公开(公告)号：US4394970A

公开(公告)日：1983-07-26

申请号：US232338

申请日：1981-02-06

Applicant: Karl Hofmann ,  Kurt Seifert ,  Josef Jungbauer

Inventor： Karl Hofmann ,  Kurt Seifert ,  Josef Jungbauer

IPC: F02M61/08 ,  F02M61/18 ,  B05B1/32

CPC classification number: F02M61/08

Abstract: A fuel injection pump provided with an outwardly opening valve needle, on the valve needle head of which there is disposed an injection cone, tapered in the direction of the fuel flow in extension of a cylindrical section of the needle head, for the purpose of shaping the injection jet.

Abstract translation: 一种具有向外打开的阀针的燃料喷射泵，在其针阀头上设置有注射锥体，其在针头的圆柱形部分延伸的燃料流动方向上渐缩，以形成 注射射流。

公开(公告)号：US4096999A

公开(公告)日：1978-06-27

申请号：US745666

申请日：1976-11-29

Applicant: Konrad Eckert ,  Karl Hofmann ,  Kurt Seifert

Inventor： Konrad Eckert ,  Karl Hofmann ,  Kurt Seifert

IPC: F02M45/08 ,  B05B1/30

CPC classification number: F02M45/08

Abstract: A fuel injection valve assembly for supplying a preliminary injection of fuel of a constant amount regardless of engine speed before the main injection of fuel begins comprising a spring biased, fuel supply pressure responsive, preliminary injection piston for the preliminary injection, a fuel supply pressure responsive loading piston for controlling the main injection fuel flow and a needle valve, both of the latter being biased oppositely by a common spring. Separate supply ducts for the preliminary and main fuel injections and the arrangement of the valve surfaces on the loading piston and needle valve enable the loading piston to be held closed and the needle valve to be opened by the pressure imposed on the preliminary injection piston and remain open long enough for the preliminary injection piston to travel its full stroke before closing and before the needle valve is opened for the main injection.

Abstract translation: 用于在主燃料开始之前，不管发动机转速如何，用于提供恒定量的燃料的初步喷射的燃料喷射阀组件包括弹簧偏置的燃料供应压力响应，用于预喷射的预喷射活塞，响应燃料供应压力 装载用于控制主喷射燃料流的活塞和针阀，两者都被公共弹簧相反地偏压。 用于初级和主要燃料喷射的单独的供应管道以及装载活塞和针阀上的阀表面的布置使得装载活塞能够保持关闭，并且针阀由施加在预喷射活塞上的压力打开并保持 打开足够长的时间使预喷射活塞在关闭之前和针阀打开以进行主注射之前行进其全行程。