Engine air-fuel control for an engine with valves that may...

Details Engine air-fuel control for an engine with valves that may... Engine air-fuel control for an engine with valves that may...

2006-04-25

2006-04-25

Solis, Erick (Department: 3747)

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

Reexamination Certificate

active

07032581

ABSTRACT:
A system and method to control engine valve timing to improve air-fuel control in an engine with valves that may be deactivated. Valves that may be deactivated are controlled in a manner to improve detection of individual cylinder air-fuel ratios.

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