Internal combustion engine having variable valve actuation...

Details Internal combustion engine having variable valve actuation... Internal combustion engine having variable valve actuation...

2006-01-17

2006-01-17

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090170, C123S090160, C701S114000

Reexamination Certificate

active

06986330

ABSTRACT:
An internal combustion engine has a variable valve actuation device for lifting an intake valve. The device is capable of changing the amount of opening of the intake valve. The device is configured to calculate a first estimated value Gao of the amount of intake air from a parameter regarding the operation state of the engine at the time of opening the intake valve; calculate a second estimated value Gac of the amount of intake air from a parameter regarding the operation state of the engine at the time of closing the intake valve; and calculate an actual amount of intake air Ga based on the first estimated value and the second estimated value.

REFERENCES:
patent: 6328007 (2001-12-01), Hirasawa et al.
patent: 6792901 (2004-09-01), Sugiyama et al.
patent: 2002/0107633 (2002-08-01), Iwaski et al.
patent: 101 57 659 (2001-11-01), None
patent: 04166633 (1992-06-01), None
patent: A 2000-80952 (2000-03-01), None
patent: A 2001-159323 (2001-06-01), None

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