Acceleration enrichment based on a fuel modifier

Details Acceleration enrichment based on a fuel modifier Acceleration enrichment based on a fuel modifier

1998-08-31

1999-09-07

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Including means responsive to instantaneous change in engine...

123486, 123492, F02D 4110

Patent

active

059470887

ABSTRACT:
A method is provided for enriching a fuel to air ratio in an engine during acceleration based on a known fuel multiplier. Initially, the method retrieves the fuel multiplier from a dynamic crankshaft fuel control (DCFC) system. This system uses the fuel multiplier to reduce the amount of fuel delivered to the engine. When acceleration is desired, the method increases the overall acceleration enrichment values as a function of the DCFC fuel multiplier. Thus, when the vehicle is launched via a throttle tip-in while the DCFC system is active, the acceleration enrichment values are increased thereby improving drivability by having combustion taking place in a richer environment.

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