Variable valve control apparatus for internal combustion...

Details Variable valve control apparatus for internal combustion... Variable valve control apparatus for internal combustion...

2006-06-06

2006-06-06

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090150, C123S090310

Reexamination Certificate

active

07055474

ABSTRACT:
When controlled variable in a variable valve event and lift mechanism is made to be a predetermined value, requested closing timing at which a target air amount can be obtained and requested opening timing at which a target residual gas rate can be obtained are calculated, and the controlled variable is changed in stepwise until an absolute value of a deviation between a requested operating angle at the requested closing timing and the requested opening timing, and an operating angle corresponding to the controlled variable, reaches a predetermined value or less, so that the controlled variable of the time when the absolute value of the deviation reaches the predetermined value or less is set to a desired value.

REFERENCES:
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patent: 6691022 (2004-02-01), Takemura et al.
patent: 2002/0100440 (2002-08-01), Takahashi et al.
patent: 2004/0103887 (2004-06-01), Machida
patent: 100 26 990 (2001-06-01), None
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patent: 9-195840 (1997-07-01), None
patent: 2001-12262 (2001-01-01), None
patent: 2001-41013 (2001-02-01), None
patent: 2001-164951 (2001-06-01), None

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