| 摘要 |
Intake throttle valves 21 a to 21 d disposed on the intake pipes 15 a to 15 d for each cylinder of a multi-cylinder engine 10 are provided with motors 20 a to 20 d for controlling valve opening of the intake throttle valves. The microprocessor 31 controls throttle valve opening in response to a degree of stepping on an accelerator pedal 42 in cooperation with a program memory 32 A. The control of valve opening by each motor is sequentially subject to time division processing in the exhaust stroke of each cylinder, and a current valve opening is stored and held by a feedback control circuit section 39, 69 B, 69 C in the other strokes, thereby the control burden on the microprocessor being reduced.
|
