Patent ID: 8175785
Filing Date: 2012-05-08
Classification: B60T,B60W

Abstract:
1. A method for performance launch control of a vehicle having an engine and a clutch, the method comprising: receiving a user-selected driving condition setting; calculating an engine speed limit in response to the user-selected driving condition setting, the engine speed limit representing a maximum speed for the engine during initial launch conditions; calculating a total available tire traction value from the user-selected driving condition setting; collecting real-time vehicle status data during operation of the vehicle; generating a baseline target wheel slip profile from the vehicle status data; adjusting the baseline target wheel slip profile, using the user-selected driving condition setting, to obtain an adjusted target wheel slip profile; and estimating, based on the real-time vehicle status data, a real-time tire traction value corresponding to lateral force tire traction potential; computing a remaining tire traction value by subtracting the estimated real-time tire traction value from the calculated total available tire traction value, to obtain a surplus tire traction capacity for current real-time operating conditions; calculating a torque limit for the engine, based on the remaining tire traction value; detecting initial launch conditions for the vehicle; enabling the engine speed limit until subsequent engagement of the clutch; and limiting actual engine torque of the vehicle using the torque limit.