AUTOMATIC OPERATING SYSTEM OF VEHICLE AND ITS CONTROLLING METHOD, AUTOMATIC OPERATING SYSTEM OF ENGINE AND ITS CONTROLLING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an automatic operating system of vehicle, an automatic operating system of engine and their controlling method in which difference between the actual vehicle speed and the table vehicle speed is reduced by following up the vehicle speed before and after speed change incident to speed change operation and adverse effect of discontinuous acceleration on the measurement of exhaust gas can be prevented. SOLUTION: In the automatic operating system of vehicle where a vehicle is operated automatically according to a table vehicle speed 21, accelerated at a predetermined time before starting speed change according to a pre-acceleration control target vehicle speed indicative of a specified speed increase and then accelerated at a predetermined time after ending speed change according to a post-acceleration control target vehicle speed indicative of a specified speed increase, acceleration 24 at the time of pre- acceleration is increased according to a linear function by increasing the pre- acceleration control target vehicle speed 22 according to a quadratic function with time and acceleration 25 at the time of post-acceleration is decreased according to a linear function by increasing the post-acceleration control target vehicle speed 23 according to a quadratic function.