Patent ID: 8352136

Claim:
A vehicle control system for a vehicle equipped with an engine and an automatic transmission in which a clutch is disposed to establish mechanical connection between an input shaft leading to the engine and an output shaft leading to a wheel of the vehicle when the automatic transmission is placed in a travel gear range, comprising: a vehicle speed sensor which measures a speed of a vehicle; and a controller which operates in a stop mode and a restart mode, selectively, when a given engine stop requirement is met during running of an engine of the vehicle, said controller entering the stop mode to stop the engine automatically, when a given engine restart requirement is met after stop of the engine, said controller entering the restart mode to restart the engine and also entering a clutch control mode to bring the clutch in the automatic transmission into a slippable state in which the clutch is permitted to slip based on the speed of the vehicle, as measured by said vehicle speed sensor, wherein when the speed of the vehicle, as measured by said vehicle speed sensor. is lower than a given speed value upon restart of the engine, said controller places the clutch in the slippable state, and wherein said controller calculates a peak of speed of the engine elevated by restart of the engine and determines the given speed value based on the calculated peak.