Auto drive system for a vehicle

An auto drive system for a vehicle, comprising:

• a throttle valve for adjusting a vehicle driving power;
• an accelerator pedal being mechanically separate from the throttle valve and being movable between an undepressed position and a fully-depressed position;
• detecting means for detecting a displacement of the accelerator pedal from its undepressed position, and outputting an accelerator pedal position signal representative thereof;
• determining means for determining whether auto drive is executed or unexecuted;
• first controlling means for controlling the throttle valve in response to the accelerator pedal position signal when the determining means determines auto drive to be unexecuted;
• second controlling means for controlling the throttle valve in accordance with a desired position of the throttle valve when the determining means determines auto drive to be executed;
• and
• changing means for changing the undepressed position of the accelerator pedal in response to a result of said determining by the determining means.

An auto drive system for a vehicle, comprising:

• a first throttle valve for adjusting a vehicle driving power;
• a second throttle valve for adjusting the vehicle driving power;
• an accelerator pedal movable between an undepressed position and a fully-depressed position;
• connecting means for mechanically connecting the accelerator pedal and the second throttle valve so that the second throttle valve will be controlled by the accelerator pedal;
• determining means for determining whether auto drive is executed or unexecuted;
• first controlling means for controlling the first throttle valve in accordance with a desired position of the first throttle valve when the determining means determines auto drive to be executed;
• and
• changing means for changing the undepressed position of the accelerator pedal in response to a result of said determining by the determining means.