Internal-combustion engines – Spark ignition timing control – Electronic control
Reexamination Certificate
2005-01-18
2005-01-18
Argenbright, Tony M. (Department: 3747)
Internal-combustion engines
Spark ignition timing control
Electronic control
C123S090150, C123S090160, C123S406470, C123S492000, C123S493000
Reexamination Certificate
active
06843230
ABSTRACT:
In an internal combustion engine provided with a variable valve mechanism that varies a valve operating characteristic (valve lift amount and valve operating angle) of an intake valve, the valve operating characteristic of the intake valve is detected and an intake air amount controlled by the intake valve is calculated based on the detected valve operating characteristic. Then, a change (change rate, change amount) between the newest intake air amount calculation value and a past intake air amount calculation value is calculated, and the newest engine controlled variable is calculated based on the change and engine controlled variable (basic fuel injection quantity and the like) set in the past, and then the calculated newest engine controlled variable is output for executing an engine control.
REFERENCES:
patent: 5832901 (1998-11-01), Yoshida et al.
patent: 6688287 (2004-02-01), Machida
patent: 6725842 (2004-04-01), Matsumoto
patent: 6792927 (2004-09-01), Kobayashi
patent: 11-062639 (1999-03-01), None
Iizuka Isamu
Machida Kenichi
Argenbright Tony M.
Hitachi Unisia Automotive Ltd.
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