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Guangzhou Huangong Machinery Equipment Co.,Ltd

Add:D08-09 ZhuCun International Machinery Market GuangZhou City

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Tel:86-20-32234893

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Engine Spare Parts Skills Requirement

Assembly quality will directly affect the level of diesel economy, reliability and service life. This article describes the key components of the engine assembly points, Engine Spare Parts in order to improve the quality of the engine repair

When the engine overhaul should be disassembled. Repair after assembly is an important task, how to successfully put the parts into a complete diesel engine, Engine Spare Parts which has a very high technical requirements. Especially the quality of the assembly, which directly affects the life of the diesel engine during use, as well as the degree of frequency of repairs.

When the engine is in operation, Engine Spare Parts the inner surface of the cylinder liner is in direct contact with the high temperature gas, and its temperature and pressure are frequently changed, and its instantaneous value is high, giving the cylinder a large heat load and mechanical load. Engine Spare Parts Pistons in the cylinder to do high-speed reciprocating linear motion, the cylinder wall from the guiding role.

Cylinder wall lubrication conditions are poor, the formation of oil film difficult. Engine Spare Parts Wear in the use of faster, especially near the top dead center. In addition, the combustion products are also corrosive to the cylinder. In this harsh working conditions, the cylinder wear is not avoided. Engine Spare Parts Cylinder wear will affect the performance of the engine, the cylinder liner is also a consumable parts of the diesel engine.

After installation, the amount of deformation (size reduction and roundabout) of the water stop is not greater than 0. 02 mm. Deformation, should be pulled out of the cylinder liner repair water ring after reloading. After the cylinder liner is inserted, the cylinder shoulders should protrude from the cylinder plane 0.06 to 0.12 mm. This size should be tested before loading the water stop. Highlight the amount of hours, Engine Spare Parts can be in the cylinder on the shoulder above the appropriate thickness of the copper pad; protruding volume is too large, to turn the cylinder liner on the shoulder.

The piston ring is divided into gas ring and oil ring. 195 diesel engine with Yan Road gas ring and an oil ring, Z1100 diesel engine is used two air ring and an oil ring. Engine Spare Parts They are mounted in the piston ring groove, relying on the elastic force on the cylinder wall, and with the piston up and down movement. Engine Spare Parts The role of the gas ring has two, one is sealed cylinder, as far as possible so that the gas inside the cylinder does not leak into the crankcase; the second is the heat of the piston head to the cylinder wall.

Once the piston ring leaks, a large amount of high temperature gas sprang from the gap between the piston and the cylinder, not only the heat received by the piston from the top can not be passed to the cylinder wall with the piston ring, and the piston outer surface and the piston ring are also heated by gas ,Engine Spare Parts And finally lead to the piston and piston ring burned. The oil ring acts primarily as a scraper to prevent oil from entering the combustion chamber. Piston ring working environment is bad, Engine Spare Parts but also the wearing parts of diesel.

The position of the piston ring end clearance, Engine Spare Parts if it is four rings, the first and second piston ring of the end of the piston pin axis and 45 °, and staggered 180 °; the third, the fourth ring of the end of the gap and The first and second ends are at right angles and are 45 ° to the piston pin axis and offset 180 ° from each other. If it is a three-ring, the end of the first ring should be located at the angle of 30 ° with the piston pin axis, Engine Spare Parts the other ring in turn separated from each other 120 °.

The piston pin of the agricultural small diesel engine is a floating piston pin. When the cold state, the piston pin and the connecting rod small head bushing have the gap to be free to rotate, but the pin and pin hole is the transition fit and can not rotate; when the diesel engine is working, Engine Spare Parts The piston pin is slowly rotated in the pin hole so that the wear is reduced and uniform. Engine Spare Parts In order to prevent the axial movement of the piston pin to damage the cylinder, Engine Spare Parts the piston pin hole at both ends of the ring groove is equipped with a spring ring to fix the piston pin axial position.