| 摘要 |
PURPOSE:To enable a proper compensation for increase in the amount of fuel to be made in a fuel injection device wherein a basic amount of fuel injection is compensated in accordance with the operating condition of an internal combustion engine by a method wherein a valve obtained by integration in accordance with the amount of change in the pressure in an air intake pipe is used as a compensating factor so that the amount of fuel to be injected may be increased for acceleration in accordance with an increase rate of the pressure in the air intake pipe. CONSTITUTION:In case a control circuit 54 receives an air intake pipe pressure signal transmitted by an air intake pipe pressure sensor 34 and a signal indicative of the number of revolutions of the engine transmitted by a crank angle sensor 44 to find a basic amount of fuel injection to control a fuel injection valve 30, if, during acceleration, the pressure in the air intake pipe increases after the increase in the degree of opening of a throttle valve 18, an incremental compensation in the air intake pipe pressure is made. In brief, a value obtained by integrating preset values corresponding to the amount of changes in the intake pipe pressure every predetermined time is found as a compensating factor. Subsequently, the amount of fuel to be injected in increased for acceleration in accordance with an increase rate of the pressure in the air intake pressure on the basis of the compensating factor so as to achieve consistently improved acceleration performance and exhaust gas cleaning performance. |
