초록 ▼

A vehicle constant speed control system including a vehicle speed detector and a controller for controlling the engine throttle valve so that the engine output is controlled to make the vehicle speed approach a target speed. The controller compares the actual vehicle speed with the target speed and

A vehicle constant speed control system including a vehicle speed detector and a controller for controlling the engine throttle valve so that the engine output is controlled to make the vehicle speed approach a target speed. The controller compares the actual vehicle speed with the target speed and calculates a required driving torque for driving the vehicle at the target speed and a target throttle valve position which is required for producing the required driving torque. The controller then produces a driving signal to actuate the engine throttle valve so that the required driving torque is produced and the target speed is attained.

대표청구항 ▼

A speed control system for a motor vehicle having an engine provided with throttle valve means in intake passage means for controlling intake air flow to the engine, actuator means for actuating said throttle valve means, vehicle speed detecting means for detecting an actual speed of the vehicle, ta

A speed control system for a motor vehicle having an engine provided with throttle valve means in intake passage means for controlling intake air flow to the engine, actuator means for actuating said throttle valve means, vehicle speed detecting means for detecting an actual speed of the vehicle, target speed setting means for setting a target vehicle speed, speed difference detecting means for detecting a speed difference between the actual vehicle speed and the target speed and producing a speed difference signal denoting the speed difference between the actual vehicle speed and the target speed, required torque determining means for determining a required traction torque which is required for establishing the target speed in accordance with said speed difference signal, throttle valve position determining means for determining a target throttle valve position of the throttle valve means required for establishing the required traction torque in accordance with the required traction torque and an output from the vehicle speed detecting means, and control means responsive to an output from said throttle valve position determining means for controlling said actuator means so that the throttle valve means is operated to make the actual vehicle speed approach the target speed.