A braking system for the control of vehicle speed, the vehicle including an
engine having a first plurality of engine cylinders, an electronic
throttle, electrical power source and engine brake adapted to provide
engine braking, comprising an electronic control unit in communication
with the engine electrical power source, engine throttle and engine brake,
and a speed sensor adapted to measure the speed of the vehicle and
communicate the measured vehicle speed to the electronic control unit,
wherein when the measured vehicle speed is greater than a pre-determined
vehicle speed threshold, the electronic control unit disables the engine
throttle and applies the engine brake using a second plurality of the
engine cylinders, the second plurality of engine cylinders being less than
the first plurality of engine cylinders.
