公开(公告)号：US4691674A

公开(公告)日：1987-09-08

申请号：US783918

申请日：1985-10-03

申请人： Shojiro Otsuka ,  Hideaki Komada

发明人： Shojiro Otsuka ,  Hideaki Komada

IPC分类号： F02M43/04 ,  F02M59/10 ,  F02M43/00

CPC分类号： F02M43/04 ,  F02M59/105

摘要： A multistage fuel injection system for an internal combustion engine has an injection nozzle capable of injecting main and auxiliary fuels into a cylinder of the engine at controlled intervals, thereby completely combusting an unburned fuel-and-air mixture in the cylinder. The injection nozzle includes a main injection passage for the main fuel, a needle valve for opening and closing the main injection passage, an auxiliary injection passage for the auxiliary fuel communicating with the main injection passage through the needle valve at a discharge end of the latter, and a check valve for preventing a reverse flow of the main fuel from the main injection passage to the auxiliary injection passage.

摘要翻译： 用于内燃机的多级燃料喷射系统具有喷射喷嘴，其能够以主要的间隔将主燃料和辅助燃料喷射到发动机的气缸中，从而完全燃烧汽缸中未燃烧的燃料和空气混合物。 注射喷嘴包括用于主燃料的主喷射通道，用于打开和关闭主喷射通道的针阀，用于辅助燃料的辅助喷射通道，该辅助喷射通道在后者的排出端处通过针阀与主喷射通道连通 以及用于防止主燃料从主喷射通道向辅助喷射通道逆流的止回阀。