| 摘要 |
<p>PROBLEM TO BE SOLVED: To highly quickly control operation of a heater without overheating fuel and the heater by feedforward control for estimating a heating degree of the fuel obtained thereby from heating electric energy inputted to the heater. SOLUTION: Target input electric energy to be inputted to the heater for setting the fuel to a prescribed heating degree is estimated on the basis of an engine starting time fuel injection quantity, a cooling water temperature, an intake air temperature, intake pipe negative pressure, fuel properties, system fuel pressure, atmospheric pressure, an engine speed, a fuel injection valve operation frequency per a crank angle, and heat conductivity around the heater, and when actual input electric energy reaches the target input electric energy, current-carrying to the heater is reduced.</p> |
