Intake valve control apparatus and method for an internal...

Details Intake valve control apparatus and method for an internal... Intake valve control apparatus and method for an internal...

2007-01-30

2007-01-30

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090160, C123S090170, C123S090310

Reexamination Certificate

active

11073614

ABSTRACT:
An intake valve control apparatus for an internal combustion engine includes a first variable valve operating mechanism capable of varying an operation angle of an intake valve continuously, a second variable valve operating mechanism capable of varying a maximum lift phase of the intake valve continuously, and a controller that controls an intake air amount mainly by varying the operation angle and the maximum lift phase of the intake valve. The controller is configured to, when one of the first and second variable valve operating mechanisms is at a phase position different from a predetermined start stage phase position at engine start, correct a phase position of the other of the first and second variable valve operating mechanisms in accordance with a present phase position of the one of the first and second variable valve operating mechanisms. An intake valve control method is also provided.

REFERENCES:
patent: 6401675 (2002-06-01), Nakamura et al.
patent: 6513469 (2003-02-01), Nakamura et al.
patent: 6575128 (2003-06-01), Nakamura et al.
patent: 1 164 259 (2001-12-01), None
patent: 1 403 487 (2004-03-01), None
patent: 2002-256905 (2002-09-01), None

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