TRACTION CONTROL FOR A HYBRID ELECTRIC POWERTRAIN

摘要

An electric machine and internal combustion engine are coordinated to provide traction control for an automotive vehicle. A propulsive torque limit is set by a controller during a loss of traction. When the machine torque limit is greater than the propulsive torque limit, the engine is pulled down. When the machine torque is less than the propulsive torque limit, the engine is pulled up. The controller coordinates the pulled up engine with the machine such that the engine is subordinated to the machine.

主权项

1. A method of controlling an automotive powertrain comprising:
controlling an engine and electric machine based on a propulsive torque limit that is a function of a loss of traction; stopping the engine when a machine torque limit exceeds the propulsive limit; restarting the engine when the propulsive limit exceeds a future machine torque limit.