Two stroke and four petrol engine pdf

Such combustion is called constant volume combustion. Comparison between twostroke and fourstroke engines can be done in aspects like strokes required for thermodynamic cycle completion, weight of flywheel used, engine size for producing the same power, rate of wear and tear in engine, by identifying valves are present or not, engine cost, volumetric efficiency and thermal efficiency. In this project work, we have successfully designed and fabricated a two stroke petrol engine. Four stroke cycle engine when the cycle is completed in two revolutions of the crankshaft, it is called four stroke cycle engine. Pdf two stroke and four stroke cycle engine researchgate. The spark plug produces a spark and ignites the air fuel mixture. Be it a motorcycle or a car, everything contains an engine. Two stroke and four stroke petrol engines engg tutorials. Engines can come in either the fourstroke or the twostroke version. The ignition of the mixture is caused by an electric spark and is known as spark ignition. Fourstroke and twostroke marine engines comparison ijera. In fourstroke engines, valves are used instead of ports. Two stroke engines still have their applications where high power is required in string trimmers and chainsaws.

A four stroke engine consumes less fuel than a two stroke engine. Comparison between two stroke and four stroke cycle. As the name suggests two stroke engine has only two cycles. Pdf an engine is a machine that we use in our daily life. A stroke refers to the full travel of the piston along the cylinder, in either direction. Twostroke or twocycle engine is a type of internal combustion engine which completes a power cycle with two strokes up and down movements of the piston during only one crankshaft revolution. Two stroke engine can be of either petrol or diesel type. In this engine liquid fuel is atomised, vaporized and mixed with air in correct. Two stroke four stroke two stroke four stroke spark ignition carburettor type ic engine in this engine liquid fuel is atomised, vaporized and mixed with air in correct proportion before being taken to the engine cylinder through the intake manifolds. Comparison between twostroke and fourstroke engines. The various strokes in the operation of a fourstroke cycle petrol engine are described below. The engine which converts the heat energy into mechanical energy is known as heat engine. A fourstroke engine also known as fourcycle is an internal combustion engine in which the piston completes four separate strokes which comprise a single thermodynamic cycle.