A four-stroke engine requires four distinct piston strokes to complete one operating cycle. It is an internal combustion engine that requires two crankshaft revolutions. Intake, compression, power, and exhaust are all part of one operating cycle. The piston, crankshaft, connecting rod, flywheel, inlet and outlet valves, and spark plug are all components of this engine. A piston can transfer the increasing push of gas to the mechanical rotation of the crankshaft via a connecting rod. A crankshaft aids in the conversion of reciprocating motion to rotational motion. The connecting rod functions as a lever arm, transferring motion from a piston to the crankshaft. The energy is stored in a flywheel, which is nothing more than a mechanical device that rotates. Inlet and outlet valves allow fresh air-containing fuel to enter the cylinder and remove the spent air-fuel mixture.
The suction or intake stroke is the first step in the engine's cycle. In this case, the inlet valve remains open for a few degrees before closing and sealing the air-fuel mixture in the cylinder. The crankshaft rotates 180 degrees in this case. The compression stroke is the next phase of this cycle, in which the inlet and outlet valves remain closed to maintain the compression inside the cylinder. The following step in this operational cycle is the combustion stroke, also known as the power stroke. Various hot expanding gases push the piston away from the cylinder head in this case. Both valves remain closed in this case. The exhaust stroke is the final step in this cycle, in which the cylinder is filled with exhaust gases and combustion is completed. A four-stroke engine is a popular choice among engine parts manufacturers in India. Because the two-stroke engine wears out faster due to its higher RPM, many manufacturers prefer the four-stroke engine.
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