Variable valve control system for internal combustion engine

Details Variable valve control system for internal combustion engine Variable valve control system for internal combustion engine

2007-12-18

2007-12-18

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090150, C123S346000

Reexamination Certificate

active

11106448

ABSTRACT:
A variable valve control system for an internal combustion engine, includes a valve to open and close an opening of a combustion chamber of the engine, a variable lift characteristic control mechanism to adjust a valve lift characteristic of the valve, a sensing section to collect information needed to determine an estimated valve lift characteristic of the valve, an input section to receive an externally input calibration-mode command. The variable valve control system is configured to perform: controlling the valve lift characteristic to be a mechanically defined small setting in response to the calibration-mode command; collecting the information when the valve lift characteristic is the small setting; and calibrating the sensing section in accordance with the collected information.

REFERENCES:
patent: 6938593 (2005-09-01), Magner et al.
patent: 11-107725 (1999-04-01), None
patent: 2002-349215 (2002-12-01), None
patent: 2003-41955 (2003-02-01), None
U.S. Appl. No. 11/084,360, filed Mar. 21, 2005, Arai et al.

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