Internal-combustion engines – Poppet valve operating mechanism – With means for varying timing
Reexamination Certificate
2005-07-26
2005-07-26
Denion, Thomas (Department: 3748)
Internal-combustion engines
Poppet valve operating mechanism
With means for varying timing
C123S090150, C123S090170, C701S105000
Reexamination Certificate
active
06920852
ABSTRACT:
The present invention is constructed such that there is provided a variable valve opening mechanism which varies an opening of an engine valve continuously, the opening of the engine valve is feedback controlled to a target opening and at the same time, at least the opening of the engine valve relative to controlled variable of a first reference opening is detected to be learned at an initial time, and after the initial learning, the opening of the engine valve relative to controlled variable of a second reference opening different from the first reference opening is detected to be learned, and based on the initial learning result and a newest learning result of the second reference opening, an opening detection characteristic of an opening sensor is learned.
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patent: 5715779 (1998-02-01), Kato et al.
patent: 6301543 (2001-10-01), Fujiwara et al.
patent: 6776130 (2004-08-01), Miyakoshi et al.
patent: 04350347 (1992-12-01), None
patent: 2000-41955 (2003-02-01), None
Denion Thomas
Riddle Kyle M.
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