Fuel control system with compensation for intake valve and engine coolant temperature warm-up rates

摘要

An electronic engine controller (EEC) controls the delivery of fuel to an internal combustion engine via one or more fuel injectors by generating a base fuel value and modifying it with a transient fuel compensation value. The EEC determines the transient fuel compensation value by measuring a temperature value indicative of the temperature of the induction system of the engine and determining a valve effect value indicative of the effect of intake valve temperature on the vaporization of fuel in the induction system. A transient fuel compensation value is then generated in response to the temperature value and the valve effect value. The base fuel value, generated under any of a variety of known engine control methods, including open-loop control and closed-loop control, is altered in response to the transient fuel compensation value to generate a fuel injector control signal for controlling the amount of fuel delivered by the fuel injectors.