What is the working principle of a petrol engine?

The engine converts Heat Energy into Kinetic Energy in the form of ‘Reciprocating Motion’. The expansion of heated gases and their forces act on the engine pistons. The gases push the pistons downwards which results in reciprocating motion of pistons. This motion of the piston enables the crank-shaft to rotate.

What is 4 stroke engine PDF?

A four-stroke engine is an Internal combustion engine, where four successive strokes (i.e. Suction-Compression-Power-Exhaust) completes in two revolutions of the crankshaft. Therefore, the engine is called a Four-stroke engine. In recent days the majority of automobile runs on a four-stroke cycle.

How does petrol work as a fuel?

Power: The spark ignites the mixture causing a small explosion. It’s the hot gas created by this explosion that pushes the piston back down, thus driving the crankshaft and, therefore, the wheels. Outlet: Following the explosion, the crankshaft forces the piston back to the top of the once again.

What is the working principle of 4 stroke petrol engine?

The principle used in a four stroke petrol engine is commonly known as Otto Cycle. It states that there would be one power stroke for every four strokes. Such engines use a spark plug which is used for the ignition of the combustible fuel used in the engine.

What are the main components of petrol engine?

Components of the Petrol Engine

  • Spark plug.
  • Cylinder or Combustion chamber.
  • Carburetor.
  • Piston.
  • Inlet or Suction valve.
  • Connecting rod.
  • Exhaust valve.

Which cycle is used in petrol engine?

Otto cycle The Otto Cycle is named after Nikolaus Otto (1832–1891, German) who is credited as the first creator of a petroleum fuel based internal combustion engine operating under a four stroke cycle.

What is valve timing diagram?

A valve timing diagram is a graphical representation of the opening and closing of the intake and exhaust valve of the engine, The opening and closing of the valves of the engine depend upon the movement of piston from TDC to BDC, This relation between piston and valves is controlled by setting a graphical …

What is the working principle of 2 stroke petrol engine?

As the name implies, the two stroke engine only requires two piston movements (one cycle) in order to generate power. The engine is able do produce power after one cycle because the exhaust and intake of the gas occurs simultaneously, as seen in Figure 1.

What type of engine is petrol engine?

Piston-and-cylinder engines Most gasoline engines are of the reciprocating piston-and-cylinder type. The essential components of the piston-and-cylinder engine are shown in the figure. Almost all engines of this type follow either the four-stroke cycle or the two-stroke cycle.