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1.发明授权
公开(公告)号：US5954032A
公开(公告)日：1999-09-21
申请号：US989242
申请日：1997-12-12
CPC分类号： F02D41/22 , F02D41/0087 , F02D41/36 , F02D41/3836 , F02M63/0205 , F02D2041/224 , F02D2041/3881 , F02D2200/0602 , F02D2250/31 , Y02T10/44
摘要： A control for an injection system of a multicylinder internal combustion engine has a high pressure pump connected to a distributor element provided with outlet openings from which branch lines lead separately to groups of injection valves. The distributor element has first and second spring biased pistons that are operable to block selectively fuel to the branch lines, each of the pistons having a throttle point situated therein. When a major leak develops downstream from the distributor element, the branch line in which the leak has occurred is automatically shut off by the associated piston in the distributor element, due to the imbalance in pressure which results. When a minor leak develops, one of the branch lines is automatically closed by a control unit shutting off the injection valves associated with the other branch line, while the high pressure pump continues to deliver for at least one operating cycle. The other branch line and associate injection valves operate once again, with an adjustment of the fuel volume supplied when elimination of the leak is detected. When, however, it is determined that the leak still exists, injection valves that have been shut off are activated once again without delivering new fuel, and one branch line and associated injection valves continues to operate while adjusting the amount of fuel delivered.
摘要翻译： 用于多缸内燃机的喷射系统的控制器具有连接到分配器元件的高压泵，所述分配器元件设置有出口开口，分支管线从该分配器元件分别引导到喷射阀组。 分配器元件具有第一和第二弹簧偏置的活塞，其可操作以选择性地阻挡分支管线的燃料，每个活塞具有位于其中的节流点。 当分配器元件的下游发生主要泄漏时，由于压力的不平衡导致发生泄漏的分支管线被分配器元件中的相关活塞自动切断。 当微小的泄漏发生时，其中一条分支管线由控制单元自动关闭，该控制单元关闭与另一个分支管线相关联的注入阀，而高压泵继续输送至少一个操作循环。 另一个分支管线和辅助进样阀再次操作，当检测到泄漏的消除时调节供应的燃料量。 然而，当确定泄漏仍然存在时，已经关闭的喷射阀再次被激活而不输送新燃料，并且一个分支管线和相关联的喷射阀在调节输送的燃料量的同时继续运行。
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