Working Principle Of Motorcycles

Taking the working principles of four stroke and two stroke engines as examples:
Four stroke engines have a wide range of applications, which means that the cylinder fires once every four reciprocating movements of the piston. The specific working principle is as follows:
1. Intake: At this point, the intake valve opens, the piston goes down, and the mixture of gasoline and air is sucked into the cylinder.
2. Compression: At this point, the intake and exhaust valves close simultaneously, the piston moves up, and the mixture is compressed.
3. Combustion: When the mixer is compressed to the minimum, the spark plug jumps and ignites the mixed gas. The pressure generated by combustion pushes the piston downwards and drives the crankshaft to rotate.
4. Exhaust: When the piston goes down to the lowest point, the exhaust valve opens, and the exhaust gas is discharged. The piston continues to go up to exhaust the excess exhaust gas.
The working principle of a two-stroke engine, as the name suggests, is that the piston moves up and down two strokes, and the spark plug ignites once. The intake process of a two-stroke engine is completely different from that of a four-stroke engine. A two-stroke engine undergoes two compressions. On a two-stroke engine, the mixture first flows into the crankcase and then into the cylinder. Specifically, it should flow into the combustion chamber, while the mixture of a four-stroke engine flows directly into the cylinder. The crankcase of a four-stroke engine is used to store engine oil, Due to the fact that the crankcase is used to store mixture and cannot store oil, the oil used in a two-stroke engine is a non recyclable combustion oil.