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...

2005-07-19

2005-07-19

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090190, C123S090160, C123S677000, C123S678000, C123S679000, C123S568220, C701S109000, C701S105000, C701S102000

Reexamination Certificate

active

06918362

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.

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