公开(公告)号：US20050098158A1

公开(公告)日：2005-05-12

申请号：US10980800

申请日：2004-11-04

申请人： Nasahiro Asano ,  Eiji Takemoto ,  Hiroshi Haraguchi

发明人： Nasahiro Asano ,  Eiji Takemoto ,  Hiroshi Haraguchi

IPC分类号： F02D45/00 ,  F02D41/04 ,  F02D41/12 ,  F02D41/14 ,  F02D41/24 ,  F02D41/38 ,  F02M59/36 ,  F02M63/02 ,  F02D31/00 ,  F02M7/00

CPC分类号： F02D41/3845 ,  F02D41/1497 ,  F02D41/2438 ,  F02D41/2441 ,  F02D41/247 ,  F02M59/34 ,  F02M63/0225

摘要： An electronic control unit (ECU) of an injection control system of an internal combustion engine determines that a load of a fuel pump is stabilized when a pressure-feeding operation delay elapses since a command pressure-feeding quantity outputted to the fuel pump reaches a certain pressure-feeding quantity necessary to maintain a target injection pressure. The ECU permits a single injection when a waiting period necessary to measure rotation speeds once for each cylinder before the single injection is performed elapses since the load of the fuel pump is stabilized. Thus, the single injection timing is determined based on the time point when the command pressure-feeding quantity is stabilized, the pressure-feeding operation delay, and the waiting period. Therefore, an injection quantity learning operation can be performed highly accurately in a short period.

摘要翻译： 内燃机的喷射控制系统的电子控制单元（ECU），由于输出到燃料泵的指令压力供给量达到一定程度，因此当经过供压运转延迟时，燃料泵的负荷稳定 保持目标注射压力所需的加压量。 当燃料泵的负载稳定时，在执行单次喷射之前，在经过了每个气缸一次测量转速所需的等待时间之后，ECU允许单次喷射。 因此，基于指令加压量稳定的时间点，加压运转延迟和等待期间来确定单次喷射正时。 因此，可以在短时间内高精度地执行喷射量学习操作。