Patent ID: 8738248

Claim:
A transmission control circuit operable to control a transmission of a vehicle, and to control overspeeding of the vehicle, by: determining a vehicle speed based on an input received by the transmission control circuit, the vehicle speed indicating a current road speed of the vehicle; determining a desired speed based on at least one other input received by the transmission control circuit, the desired speed specifying a desired road speed of the vehicle; determining a difference between the vehicle speed and the desired speed; detecting a vehicle overspeed condition based on the difference between the vehicle speed and the desired speed; determining a target brake torque to respond to the vehicle overspeed condition, the target brake torque being usable by an engine control circuit of the vehicle to control one or more exhaust brake devices, the one or more exhaust brake devices configured to apply a retarding force to an engine of the vehicle; and communicating the target brake torque to the engine control circuit.