Patent ID: 6334834
Filing Date: 2002-01-01
Classification: B60T,F02D,F02N,Y02T,Y10T

Abstract:
An automatic engine stop control system for a vehicle, which has: an engine to be activated when fed with a fuel; and a brake booster for assisting a braking force which has an action content influenced by a rotating state of the engine, and in which the fuel feed to the engine is stopped when predetermined conditions are satisfied during a running of the vehicle, comprising:rotating state deciding means for deciding that the engine is forced to rotate by a running inertia force owned by the vehicle while the vehicle is coasting; action state deciding means for deciding that the action content of the brake booster is insufficient when a pressure difference between a vacuum in the brake booster and an atmospheric pressure drops to a lower level than a predetermined value, in a state where the engine is forced to rotate by the running inertia force of the vehicle; and automatic stop inhibition means for inhibiting the stop of the fuel feed to the engine when it is decided by the action state deciding means that the pressure difference between the vacuum in the brake booster and the atmospheric pressure drops to a lower level than the predetermined value.