Electronic control unit and method for controlling an...

Details Electronic control unit and method for controlling an... Electronic control unit and method for controlling an...

2003-10-07

2008-05-27

Wolfe, Willis R. (Department: 3747)

Internal-combustion engines

Engine speed regulator

Idle speed control

C123S406190

Reexamination Certificate

active

07377258

ABSTRACT:
An ignition timing value of the internal-combustion engine is calculated by using correction terms including a first correction term that is calculated based on a controlled variable without reflecting a desired value and a second correction term that is calculated based on a difference between the controlled variable and the desired value. The first correction term can be calculated based on the controlled variable with no influence of the desired value. Thus, a sudden change does not occur in the feedback controlled variable even in a situation where the difference between the controlled variable and the desired value changes step-wise. Besides, the first correction term is a proportional term (51) and the second correction term is an integral term (55). The controlled variable is a rotational speed of the internal-combustion engine (NE) that is detected by a detector for detecting the engine rotational speed.

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patent: 1 010 880 (2000-06-01), None
patent: 1 079 089 (2001-02-01), None

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