| 摘要 |
A method and system are provided for modifying a control signal of a fuel injector of a fuel delivery system wherein at least one shut-down temperature signal representing the temperature of an internal combustion engine is utilized together with other input signals to calculate a net amount of heat transferred to the fuel delivery system. The signals are utilized to calculate a correction factor, which correction is used to modify the control signal for the fuel injector. Preferably, two shut-down temperature signals are utilized, an engine coolant shut-down temperature signal and an air charge shut-down temperature signal to calculate the net amount of heat transferred. The modified control signal provides accurate control of the fuel injector by compensating for the increased volatility of the heated liquid fuel. When the liquid fuel is a blended fuel such as gasoline/methanol, a blend signal is generated based on the relative amount of one of the liquid fuels in the blended fuel and the step of calculating the correction factor is also based on the blend signal. The method and system provide improved hot start fuel control. |
