Idle speed controller for internal combustion engine

Details Idle speed controller for internal combustion engine Idle speed controller for internal combustion engine

2007-01-30

2007-01-30

Argenbright, T. M. (Department: 3747)

Internal-combustion engines

Engine speed regulator

Idle speed control

C123S090150, C123S339140, C123S339220

Reexamination Certificate

active

11253550

ABSTRACT:
An idle speed controller for an internal combustion engine provided with an intake variable valve timing mechanism for varying valve timing and a variable working angle for varying a valve working angle of an intake valve. The controller performs idle speed control. When an advancement failure occurs in the intake variable valve timing mechanism, the controller performs idle-up control to increase the target idle speed. When the valve working angle of the intake variable working angle mechanism is less than a predetermined value, the electronic control unit changes an increase amount of the target idle speed to a lower value if an advancement failure occurs when performing the idle-up as compared to when the valve working angle is greater than the predetermined value.

REFERENCES:
patent: 6877468 (2005-04-01), Tsujimura et al.
patent: 2001/0004885 (2001-06-01), Fujiwara et al.
patent: 2001-263015 (2001-09-01), None
patent: 2003-065131 (2003-03-01), None

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