Method of throttle fuel lean-out for internal combustion engines

Details Method of throttle fuel lean-out for internal combustion engines Method of throttle fuel lean-out for internal combustion engines

1994-05-04

1996-02-20

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Fuel injection system

F02D 4112

Patent

active

054921023

ABSTRACT:
A method of throttle fuel lean-out for an internal combustion engine including the steps of sensing a throttle position of a throttle for the engine with a throttle position sensor, calculating a delta throttle value based on the sensed throttle position, determining whether the engine is in a throttle deceleration condition based on the calculated delta throttle value, linearizing the change in throttle position with respect to absolute throttle position and engine speed if the engine is in a throttle deceleration condition, calculating a throttle deceleration fuel lean-out multiplier value based on the linearized change in throttle position, and applying the calculated throttle deceleration fuel lean-out multiplier value to a fuel pulsewidth value of fuel injectors for the engine and reducing the amount of fuel injected into the engine by the fuel injectors.

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