Techniques for monitoring powertrain propulsive torque in battery electric and plug-in hybrid electric vehicles

An electrified vehicle, comprising:

• an electrified powertrain comprising:
• an engine;
• and
• a hybrid transmission comprising two electric propulsion motors,
• wherein the engine and the hybrid transmission operate collectively or independently to generate and output a drive torque to a driveline of the vehicle;
• a set of input devices/sensors configured to receive a set of inputs indicative of a driver torque request to be generated and output by the electrified powertrain;
• and
• a control system comprising a main control system, a first monitoring system, and a second monitoring system that are distinct from each other, wherein:
• the main control system is configured to (i) determine a first distribution of the driver torque request to the electrified powertrain and (ii) take first remedial action when commanded by the first monitoring system, the first remedial action involving reducing a torque output of the electrified powertrain for a period and the electrified powertrain remaining operational;
• the first monitoring system is configured to (i) determine a second distribution of the driver torque request to electrified powertrain, (ii) determine an error indicative of a difference between the first and second distributions, and (iii) command the main control system to take the first remedial action based on the error and a set of thresholds;
• and
• the second monitoring system is configured to (i) detect unintended propulsive torque being generated by the electrified powertrain after the first remedial action has been taken and (ii) in response, take a second remedial action by disabling the electrified powertrain.