Translations:Engine & Compression Brake/2/en

Disengaging throttle of an engine naturally leads it to drop RPM. However, because the mechanical transmission has such a firm link between the engine and the wheels, slowing down of the engine causes the vehicle to slow down too, if the reverser is set in the direction of travel. Selecting a gear where RPM is high gets the most out of an engine brake, and if a train is light enough it will slow down from mere disengagement of the throttle.