Intake air amount control apparatus for vehicle engine and...

Details Intake air amount control apparatus for vehicle engine and... Intake air amount control apparatus for vehicle engine and...

2005-09-20

2005-09-20

Huynh, Hai (Department: 3747)

Internal-combustion engines

Engine speed regulator

By changing valve lift

C123S321000, C123S090150

Reexamination Certificate

active

06945224

ABSTRACT:
In a control apparatus for controlling an intake air amount of an engine by variably controlling a lift amount of an intake valve, when a variable valve lift mechanism is failed, the control is switched to a control of the intake air amount based on an opening degree of a throttle valve, and also the opening degree of the throttle valve is restricted within an upper limit value in order to ensure a negative pressure utilized by a brake booster.

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patent: 2003/0019475 (2003-01-01), Machida et al.
patent: 2004/0244473 (2004-12-01), Tamura et al.
patent: JP 4-362245 (1992-12-01), None
patent: JP 2001-130248 (2001-05-01), None
patent: 2001-254637 (2001-09-01), None

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