![]() ![]() Nikolaus august otto encountered the internal combustion engine built in Paris by Belgian expatriate Jean Joseph Etienne Lenoir. Read more: Things you must know about connecting rod Read more: Understanding how car engine works Watch the video below to learn the working of four-stroke engines: ![]() As the valve opens, the exhaust gas is pushed out by the piston when it moves back upwards. Exhaust stroke : this is the final stage of the combustion cycle it occurs when the piston moves back downward, and the exhaust valve opens.Power stroke: after the combustion takes place, the heat obtained from the combusting hydrocarbon increases the pressure, giving enough energy to push down the piston and create the power output.At the end of the stroke, the availability of a spark plug allows the ignition of the air-fuel mixture, providing the energy required for the combustion. ![]() The piston moves up the chamber, making the air and fuel compressed. Compression stroke : at this stage, the intake valve is closed, blocking the air-fuel mixture from escaping.intake/inlet stroke : this is the first stage of the combustion cycle at this stage, the piston moves downward in order to allow the fuel and air to enter into the chamber.That is, all these processes must be accomplished before a vehicle can move. The following explained below is the combustion cycle of the four-stroke engine. ![]()
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