دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: the percentage of gases that escape past the piston rings from the combustion chamber into the crankcase of an engine.

n: die housing that encloses the crankshaft of an engine.

n: on an engine, one of usually several spring-loaded, lightweight metal plates placed over openings in the engines crankcase. Oxygen in the air entering the base of an engine mixes with the oil there. A hot spot could cause the oil and oxygen to explode and damage the crank- case. To prevent such damage, the spring- operated explosion covers (doors) open to release the pressure from the explosion. They then slam closed to prevent more air from entering. Also called explosion cover.

n: in an engine, a large circular friction-reducing device installed on the engines crankshaft. Main bearings are mounted in the engines crankcase and the crankshaft rotates on them. Engine oil lubricates them as the engine runs. Most main bearings are plain bearings, in that their wear surface is flat or plain and do not have balls or rollers. Compare ball bearing, roller bearing.

n: the bearing in rotary , it main function is to bearing or forwarding.

n: on an engine, a steel trough-like attachment fitted to the bottom of the engines crankcase. The engines oil pump picks up oil from the pan and circulates it through the engine.

n: on an engine, a device, powered by the engine, that moves coolant (water) through openings in the engine crankcase, through the radiator or heat exchanger, and back into the crankcase.