发明名称 |
Valve timing control system for an internal combustion engine |
摘要 |
A valve timing control system for an internal combustion engine is provided, which includes: a crank angle sensor detecting a crank angle corresponding to an internal combustion engine crank shaft rotational angle; an actuator relatively modifying phases of a cam angle with the crank angle; a cam angle sensor detecting the cam angle modified by the actuator; an oil control valve driving the actuator; a target value detection unit calculating a target value according to the internal combustion engine operation state; a cam angle control unit controlling the detected cam angle to coincide with the calculated target value; a learning unit learning a control signal to the oil control valve when the cam angle substantially coincides with the target value; and a failure detection unit detecting failure of the actuator. The failure detection unit modifies a failure detection condition according to whether learning is performed in the learning unit.
|
申请公布号 |
US2004237916(A1) |
申请公布日期 |
2004.12.02 |
申请号 |
US20030655214 |
申请日期 |
2003.09.05 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
TAKAHASHI TATSUHIKO |
分类号 |
F02D45/00;F02D13/02;F02D41/22;(IPC1-7):F01L1/34 |
主分类号 |
F02D45/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|