1. The fuel supply system provides mechanically controlled or electronically controlled, timely and appropriate fuel for the tanker engine, which contains no or little impurities and moisture.

2. The intake system should provide sufficient and filtered clean air for the tanker engine to make the ratio of air and fuel close to and complete combustion; the exhaust system should make the exhaust gas as timely and as complete as possible. Discharge into the atmosphere;

3. The piston connecting rod mechanism and the gas distribution mechanism should be coordinated and coordinated. The inlet and exhaust valves should be opened and closed in time to ensure good sealing performance of the cylinder and valve. At the end of the compression stroke, the pressure and temperature reach the best fuel combustion. value.