Detection of a humidity sensor failure in an internal...

Details Detection of a humidity sensor failure in an internal... Detection of a humidity sensor failure in an internal...

2008-07-15

2008-07-15

Kwon, John T (Department: 3747)

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

C123S690000

Reexamination Certificate

active

07398775

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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