公开(公告)号：US20080133108A1

公开(公告)日：2008-06-05

申请号：US11947997

申请日：2007-11-30

申请人： Kazuo KOJIMA ,  Hiroshi HARAGUCHI ,  Youhei MORIMOTO

发明人： Kazuo KOJIMA ,  Hiroshi HARAGUCHI ,  Youhei MORIMOTO

IPC分类号： F02D41/00

CPC分类号： F02D35/023 ,  F02D41/009 ,  F02D2041/281 ,  F02D2250/14

摘要： A control apparatus for a multi-cylinder internal combustion engine includes pressure sensors used for acquiring combustion chamber pressure data for each engine cylinder, during each of a series of selection intervals respectively corresponding to that cylinder, with each selection interval corresponding to a specific angular displacement of the crankshaft and having a timing determined with respect to a reference piston position in the corresponding cylinder. The timing of the selection intervals is adjusted in accordance with current conditions of the engine, such as a fuel injection mode, to be appropriate for monitoring combustion conditions in the cylinders.

摘要翻译： 用于多缸内燃机的控制装置包括用于在分别对应于该气缸的一系列选择间隔中的每一个期间用于获取每个发动机气缸的燃烧室压力数据的压力传感器，其中每个选择间隔对应于特定的角位移 并且具有相对于相应气缸中的基准活塞位置确定的定时。 根据发动机的当前状况（例如燃料喷射模式）来调节选择间隔的时间，以适合于监测气缸中的燃烧条件。

公开(公告)号：US20080147299A1

公开(公告)日：2008-06-19

申请号：US11951105

申请日：2007-12-05

申请人： Hiroshi HARAGUCHI

发明人： Hiroshi HARAGUCHI

IPC分类号： F02D41/30

CPC分类号： F02D41/221 ,  F02D35/023 ,  F02D35/028 ,  F02D41/123 ,  F02D41/1497 ,  F02D41/401 ,  F02D2200/1004 ,  Y02T10/44

摘要： A single fuel injection is performed in either one of cylinders during fuel cut control of a diesel engine to sense torque generated with the single fuel injection based upon an increase amount of rotation speed of a crankshaft at the time. Presence/absence of abnormality in an injection start timing of an injector is determined based on a difference in torque caused when the single fuel injection is performed at multiple command injection start timings. Thus, the presence/absence of the abnormality in the injection start timing can be sensed without using a nozzle lift sensor, whereby inhibiting an increase in the number of components.

摘要翻译： 在柴油发动机的燃料切断控制期间，在单缸燃料喷射中进行单燃料喷射，以基于当时曲轴的转速增加来感测用单次燃料喷射产生的扭矩。 基于在多个指令喷射开始定时执行单次燃料喷射时所引起的转矩差来确定喷射器的喷射开始定时中的异常存在/不存在。 因此，可以在不使用喷嘴升程传感器的情况下感测出喷射开始正时的异常的存在/不存在，由此抑制部件数量的增加。