公开(公告)号：US4549515A

公开(公告)日：1985-10-29

申请号：US687899

申请日：1984-12-31

申请人： Wolfgang Maisch

发明人： Wolfgang Maisch

IPC分类号： F02D3/00 ,  F02M69/00 ,  F02M69/26 ,  F02M69/38

CPC分类号： F02M69/26 ,  F02M69/386

摘要： A fuel injection system for internal combustion engines which has a metering valve disposed in a fuel supply line, in which adjusting characteristics for controlling the metering valve are strictly linear, thereby enabling a predictable, flexible fuel metering using simple and inexpensive control circuits. To this end, metering slits in the metering valve, which cooperate with a control piston in a known manner, are each connected to a respective differential pressure valve, which is adjusted such that the pressure differential (p.sub.1,2) before and after the metering slits is constant, regardless of the size of the uncovered cross section of the metering slits. Thus the cross section of the metering slits uncovered at a given time is linearly dependent solely on the displacement travel (h) of the control piston, which in turn is proportional to a control pressure (p.sub.4) exerted upon the control piston and generated by a pressure adjuster which operates in accordance with the operating characteristics of the engine.

摘要翻译： 一种用于内燃机的燃料喷射系统，其具有设置在燃料供应管线中的计量阀，其中用于控制计量阀的调节特性是严格线性的，由此使用简单且便宜的控制电路实现可预测的，柔性的燃料计量。 为此，以已知方式与控制活塞配合的计量阀中的计量狭缝各自连接到相应的差压阀，调节阀使计量前后的压力差（p1,2） 狭缝是恒定的，不管计量狭缝的未覆盖的横截面的尺寸如何。 因此，在给定时间未被覆盖的计量狭缝的横截面仅依赖于控制活塞的位移行程（h）而线性地依赖于控制活塞的位移行程（h），而控制活塞又与控制活塞上施加的控制压力（p4）成比例，并由 压力调节器，其根据发动机的操作特性进行操作。