公开(公告)号：US20090254261A1

公开(公告)日：2009-10-08

申请号：US12065554

申请日：2006-09-01

申请人： Mikio Inoue ,  Yasuyuki Terada

发明人： Mikio Inoue ,  Yasuyuki Terada

IPC分类号： F02D41/30

CPC分类号： F02D41/405 ,  F02D41/08 ,  F02D41/1498 ,  F02D41/16 ,  F02D41/2438 ,  F02D41/2467 ,  F02D41/3827 ,  F02D41/3836 ,  F02D41/403 ,  F02D2200/0602 ,  Y02T10/44

摘要： An electronic control unit 30 of a diesel engine 10 stores a relationship between a required fuel injection amount and a corresponding injection command signal. The unit 30 generates the injection command signal corresponding to the required fuel injection amount based on the stored relationship, and drives injectors 20 based on the injection command signal to inject fuel. The unit 30 includes a shifting section, which forcibly changes the engine rotational speed by temporarily shifting the fuel injection mode between a first injection mode and a second injection mode. The first injection mode is a mode in which an after injection is executed after a main injection. The after injection has less fuel injection amount than the main injection. The second injection mode is a mode in which the after injection is not executed. The unit 30 includes a correction section, which detects the variation of the engine rotational speed caused by shifting the fuel injection mode, and corrects the relationship based on comparison between the detected variation of the engine rotational speed and a previously determined standard variation of the engine rotational speed.

摘要翻译： 柴油发动机10的电子控制单元30存储所需燃料喷射量与相应的喷射指令信号之间的关系。 单元30基于所存储的关系产生与所需燃料喷射量对应的喷射命令信号，并且基于喷射命令信号驱动喷射器20以喷射燃料。 单元30包括变速部，通过在第一喷射模式和第二喷射模式之间临时移动燃料喷射模式来强制地改变发动机转速。 第一喷射模式是在主喷射之后执行后喷射的模式。 注射后的燃料喷射量比主喷射量少。 第二喷射模式是不执行后喷射的模式。 单元30包括校正部，该校正部检测由变更燃料喷射模式引起的发动机转速的变化，并且根据检测到的发动机转速的变化与先前确定的发动机的标准变化的比较来校正关系 转速。