What is the working cycle mode of a gasoline engine?

[VonAlice]

The working cycle process of a gasoline engine consists of four strokes: intake, compression, combustion expansion, and exhaust. The following is a related introduction: 1. Intake stroke: At this time, the piston is driven by the crankshaft to move from the top dead center to the bottom dead center, while the intake valve opens and the exhaust valve closes. When the piston moves from the top dead center to the bottom dead center, the volume above the piston increases, the gas pressure in the cylinder decreases, forming a certain degree of vacuum. Since the intake valve is open, the cylinder is connected to the intake pipe, and the mixture is sucked into the cylinder. When the piston moves to the bottom dead center, the cylinder is filled with fresh mixture and the exhaust gas that was not discharged in the previous working cycle. 2. Compression stroke: The piston moves from the bottom dead center to the top dead center, and the intake and exhaust valves close. The crankshaft rotates under the inertia force of the flywheel, pushing the piston upward through the connecting rod, the gas volume in the cylinder gradually decreases, the gas is compressed, and the pressure and temperature of the mixture in the cylinder increase accordingly.