Engine with variable cam timing and control advantageously...

Details Engine with variable cam timing and control advantageously... Engine with variable cam timing and control advantageously...

2006-09-12

2006-09-12

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090160, C123S405000, C123S568220, C123S677000, C701S105000, C701S109000

Reexamination Certificate

active

07104228

ABSTRACT:
A system and method for utilizing a humidity sensor with an internal combustion engine of a vehicle is described. Specifically, information from the humidity sensor is used to adjust a desired air-fuel ratio to reduce engine misfire while improving vehicle fuel economy. Further, such information is also used to adjust timing and/or lift of the valve in the engine cylinder. Finally, diagnostic routines are also described.

REFERENCES:
patent: 5241937 (1993-09-01), Kanehiro et al.
patent: 5284116 (1994-02-01), Richeson, Jr.
patent: 5666931 (1997-09-01), Pierik et al.
patent: 6557540 (2003-05-01), Mianzo et al.
patent: 6575148 (2003-06-01), Bhargava et al.
patent: 6728625 (2004-04-01), Strubhar et al.

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