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.
Mechanical Efficiency
Basically this is the ratio of output work to input work on any machine but for engine performance considerations it is taken as the ratio of Brake power to Indicated power (bmep to imep) and varies with speed and load.
