Patent ID: 8690729
Filing Date: 2014-04-08
Classification: B60W,F02N,Y02T,Y10T

Abstract:
1. A method of controlling idle stop & go (ISG) logic, the method comprising: (a) determining whether a brake pedal becomes ON, with a gear at a D (Drive) state while an ISG vehicle travels; (b) determining whether a road is a downhill, by measuring the inclination of the road with an inclination sensor mounted in the ISG vehicle, when the brake pedal becomes ON in the step (a); (c) internally controlling the vehicle to an N (Neutral) state, regardless of the gear at the D state, when the road is determined as a downhill in the step (b); (d) determining whether the brake pedal becomes OFF, with the gear at the D state; and (e) internally switching the vehicle from the N state to the D state, when the brake pedal becomes OFF in step (d); wherein in step (c), the internally controlling the vehicle to the N state includes keeping a hydraulic pressure of a transmission oil sub-pump at a minimum level to minimize an impact due to the OFF of the brake at the D state.