System and method of controlling fuel delivery during...

Details System and method of controlling fuel delivery during... System and method of controlling fuel delivery during...

2006-06-12

2009-10-27

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S348000, C123S491000

Reexamination Certificate

active

07607410

ABSTRACT:
An approach is provided for compensating engine fueling during starting conditions in which positive valve overlap is enabled early in the start. In one example, the valve timing is adjusted to increase positive overlap during cold starting conditions, and fuel adjustments are provided to compensate for the evaporation effects of the increased residual push-back.

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Kidokoro, et al., “Development of PZEV Exhaust Emission Control System”, SAE Technical Paper No. 2003-01-0817, Mar. 3-6, 2003, Detroit, Michigan.

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