| 摘要 |
<p>PROBLEM TO BE SOLVED: To control a fuel with an ideal air-fuel ratio even when properties of used fuel change, in a fuel injection system of a gasoline alternative fuel engine using a non-gasoline fuel.SOLUTION: An auxiliary device 10 for calculating an offset targetλvalue obtained by adding the difference between a targetλvalue for non-gasoline fuel output from an electronic control device 7 for non-gasoline fuel and a targetλvalue for gasoline output from an electronic control device for gasoline, to aλvalue (excess air ratio) in an exhaust gas detected by aλsensor 3 disposed in an exhaust pipe 2, is disposed among theλsensor 3, the electronic control device 4 for gasoline, and the electronic control device 7 for non-gasoline fuel. The electronic control device 7 for non-gasoline receiving an amount of gasoline injection calculated by comparing an offset oxygen concentration output from the auxiliary device 10 with the targetλvalue for gasoline theoretically necessary in the electronic control device for gasoline, outputs a non-gasoline fuel injection signal to a non-gasoline fuel injection valve 8 by inputting a gasoline injection signal.</p> |
