دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a device installed on a diesel engine to reduce the amount of smoke coming out of the engines exhaust. If the engines governor delivers more fuel than air to the engine, the engine smokes too much. A fuel modulator makes the governor increase the fuel supply only at the same rate as the air increase. Such rate control holds down the black smoke from the engine exhaust during acceleration or sudden loading. See governor.