Engine stall protection with vehicle hold and trailer/payload compensation on grades using engine propulsion torque

A method of controlling a powertrain of a vehicle to hold a vehicle stationary via engine propulsion torque, the powertrain comprising an engine having a crankshaft selectively coupled to an input shaft of a transmission via a torque converter, the method comprising:

• monitoring, by a set of sensors, a set of operating parameters of the vehicle indicative of at least (i) whether a driver of the vehicle is in control of the vehicle, (ii) an intended direction of motion of the vehicle, and (iii) actual motion of the vehicle;
• and
• based on the set of operating parameters:
• determining, by a controller of the vehicle, whether the driver of the vehicle is in control of the vehicle;
• and
• when the driver is determined not to be in control of the vehicle:
• determining, by the controller, whether the actual motion of the vehicle is in the intended direction of motion of the vehicle,
• when the actual motion of the vehicle is in the intended direction of motion of the vehicle, temporarily allowing, by the controller, the vehicle to move while the driver is not in control of the vehicle for a period or distance, and
• when the actual motion of the vehicle is not in the intended direction of motion of the vehicle, controlling, by the controller, a torque output of the engine to hold the vehicle stationary.