| 摘要 |
PROBLEM TO BE SOLVED: To precisely prevent the engine stalling resulted from sudden deceleration or the like even in a medium and large-sized vehicle such as truck, bus or the like with a large load on an engine. SOLUTION: In an Otto cycle engine equipped with means (12 etc.), for supplying a fuel quantity according to the intake air quantity adjusted by the opening of a throttle valve to an intake passage, this device comprises an intake bypass passage 17 for bypassing the fuel supply part of the throttle valve 11 and intake passage 10, an intake bypass valve 20 for opening and closing the intake bypass passage 17, means (21 etc.), for supplying the fuel quantity according to the bypass quantity adjusted by the opening of the intake bypass valve 20 to the intake bypass passage 17 or the intake passage 10 in the downstream of the throttle valve, and a means 25 for controlling the opening and closing of the intake bypass valve 20 on the basis of the detected value of the engine speed. |
