Four-Stroke Cycle

An engine designed for four-stroke cycle or Otto cycle is called a “four-cycle engine.” The four-stroke cycle includes intake, compression, power, and exhaust. Intake and exhaust valves are mounted in the cylinder head or the block and are actuated by cams and push rods. Technical Data used in the field explained in petroleum courses in Rawalpindi. The crankcase is connected directly to the cylinder, and contamination of the lubricating oil occurs sooner than it does in crosshead-type two-cycle engines.

The four-cycle engine is built in slow- and high-speed versions. Slow-speed engines usually have their cylinders  mounted horizontally, whereas high-speed engine cylinders are mounted vertically.

These engines use trunk pistons fastened to the crankshaft by connecting rods. Intake and exhaust valves are mounted in the cylinder head and actuated by cams and push rods. Some more details of petroleum courses in rawalpindi are as under. Some more details of petroleum courses in rawalpindi are as under.

A slow-speed, four-cycle engine usually is built with a single horizontal cylinder. A large unenclosed flywheel is provided to store energy and deliver at a fairly constant speed to the pumping unit.

High-speed, four-cycle engines are multicylinder and can operate at speeds up to approximately 2,000 rev/min. Normally, four- and six-cylinder engines are not operated at more than 1,400 rev/min to maximize engine life.

A typical four-cycle, high-speed engine used as a prime mover on a beam-type pumping unit is shown in This type of engine can operate on natural gas, LP gases, or gasoline. TSK Training for Skills and Knowledge is the best institute in Rawalpindi Islamabad for Pakistani Students who wants to join oil field after petroleum courses in Islamabad.