Throughout this site we use many technical terms, and given the breadth of readership our site enjoys, sometimes we are remiss and incorrectly assume everyone knows what we are referring to. For those that do not, here are some explanations of the technical terms use.
Engine Braking
The use of the engine while in a low gear to provide retardation on descending a hill, due to the energy required to turn the engine against compression and with the throttle closed. On some diesel engines this effect is greatly increased by providing a butterfly to close the exhaust outlet.
