Patent ID: 7016803

Claim:
An acceleration control device comprising: calculation means for calculating an aimed accelerator opening (Ac) according to an information of a depressing amount (Am) of an accelerator pedal of a motor vehicle and a current vehicle speed (V); accelerator opening difference detection means; means for providing a control output according to which a difference (Δ=Am−Ac) of accelerator opening approaches zero; start means for automatically starting the calculation of the aimed accelerator opening (Ac) when a constant speed running state of said motor vehicle is detected from the information including the vehicle speed (V); and aimed accelerator opening calculation means for calculating the aimed accelerator opening (Ac) according to a vehicle speed difference (δ=Vt−V) between a hypothetic aimed vehicle speed (Vt) and the vehicle speed (V) while sequentially changing the hypothetic aimed vehicle speed (Vt) little by little according to the accelerator opening difference (Δ) and the vehicle speed (V), which is characterized in that said accelerator opening difference detection means includes means for providing a plurality of control maps including a first control map for light load having the insensitive zone, which is provided in the vicinity of a position of the control map at which the accelerator opening difference (Δ) becomes zero (Δ=0) and which outputs the throttle opening difference as constantly zero, and a second control map for heavy load, which has a very narrow insensitive zone in the vicinity of a position of the control map at which the accelerator opening difference (Δ) is zero and selecting one of the plurality of control maps according to an output of the accelerator opening difference detection means.