دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a type of engine governor that prevents hunting (an engines speeding up and slowing down as it seeks to run at the speed dictated by the engine governor.) A compensator on the governor anticipates the engines return to its set speed. When an engines speed goes faster than the set speed, the compensator drops the engines rpm;when engine speed drops below set speed, the compensator increases the engines rpm. Normally, engine operators set the compensator to keep the drop small. With a small speed drop, the governor and compensator quickly make the engine go back to control speed. See govemo1;hunting.

n: a device on a diesel engines governor that increases the engines speed by increasing positive voltage going to the actuator and governor. As the engine needs more fuel to go faster, the direct-acting actuator increases positive voltage to make the governor increase the fuel flowing to the fuel injectors. See electrically actuated governor:

n: a hydraulic governor on an engine that has a reversible electric motor (it runs both clockwise and counterclockwise). By manipulating a remote control, the engine operator can adjust the electric motor to closely control the engines speed. See governor;hydraulic governor.

n: on a mechanical engine governor, one of usually two small metal weights that spin as the engine runs. When the engine speeds up, centrifugal force on the spinning flyweights increases, which causes a spring to compress and slow the engine down. Conversely, when the engine slows down, centrifugal force on the flyweights decreases which causes the spring to expand and speed the engine up.

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.

n: any device that limits or controls the speed of an engine.

n: a surge of engine speed to a higher number of revolutions per minute (rpm),followed by a drop to normal speed without manual movement of the throttle. It is often caused by a faulty or improperly adjusted governor.

n: a governor on an engine that operates by means of oil inside its housing. Unlike a mechanical governor, which is mechanically linked to the engines speed control, a hydraulic governor operates the speed control with oil pressure inside the governor. See governor. Compare mechanical governor.

n: (IOGCC) a commission that comprises governors of oil-producing states. It works cooperatively with the EPA to assist states in improving regulatory programs. Address: Box 53127;Oklahoma City, OK 73152-3127;(405) 525-3556.

n: a governor that maintains a constant speed of the prime mover regardless of the load applied, within the capacity of the prime mover.