发明名称 |
Combustion state-detecting system for internal combustion engines |
摘要 |
A combustion state-detecting system, for internal combustion engines, has a crank angle sensor. The crank angle sensor generates a crank angle signal with a predetermined period shorter than a firing period of the engine whenever the crankshaft rotates through a predetermined angle. A value of the rotational speed of the engine is detected whenever the crank angle signal is generated. A first average value of the detected engine rotational speed is calculated over a period of one rotation of the crankshaft, followed by calculating a second average value of the first average value over every firing period, to thereby calculate a rate of variation in the second average value over every firing period. The rate of variation is compared with a predetermined value, to determine whether or not the engine is in a degraded state of combustion.
|
申请公布号 |
US5415035(A) |
申请公布日期 |
1995.05.16 |
申请号 |
US19930118679 |
申请日期 |
1993.09.10 |
申请人 |
HONDA GIKEN KOGYO KABUSHIKI KAISHA |
发明人 |
SHIMASAKI, YUICHI;SAWAMURA, KAZUTOMO;MAEDA, KENICHI;KURODA, SHIGETAKA |
分类号 |
F02D45/00;F02B75/02;G01M15/11;(IPC1-7):F02D45/00;G01M15/00 |
主分类号 |
F02D45/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|