What is the four stroke engine?
The gasoline engine mixes the gasoline with the air into a combustible mixture, then enters the cylinder and ignites with an electric spark. Each cycle of the four stroke gasoline engine runs through the following four strokes, as shown in Figure 1 - 3.
The gasoline engine runs through a cycle of four processes: intake, compression, combustion, service, and exhaust. During this period, the piston moved four strokes reciprocating between the upper and lower dead centers. Accordingly, the crankshaft rotated for two weeks
