| 摘要 |
PURPOSE:To aim at enhancing the fuel economy, reducing the cost, reducing failures, etc., in a fuel preference type electronic-controlled fuel supply device, by heightening the idling rotational speed of the engine upon operation of an air- conditioning system in accordance with the temperature of the passenger compartment of the vehicle. CONSTITUTION:A fuel preference type electronic-controlled fuel supply devide includes a position sensor 20 for an accelerator pedal 20, a pressure sensor 24 for detecting the pressure upstream of the throttle valve 12, and a pressure sensor 26 for detecting the pressure downstream of the throttle valve 12, a computer 28, etc., and controls the air-fuel ratio in accordance with various data of the engine 10. Upon controlling of the idling rotational speed, the idling rotational speed is controlled to become the reference rotational speed when an air- conditioning system is turned off. Meanwhile, the temperature of the passanger compartment of the vehicle is detected by a compartment temperature sensor 32 when the air-conditioning system is turned on, and the idling rotational speed is set in accordance with the detected temperature. With this arrangement, the idling rotational speed is suitably raised in accordance with the temperature of the passanger compartment. |
