6D107 Diesel Engine Piston 6754-31-2110 6754-31-2110 For KOMATSU

 The piston head is machined with several ring grooves for installing piston ring. The number of piston ring depends on the sealing requirements and is related to the engine speed and cylinder pressure. High speed engines have fewer rings than low speed engines, and gasoline engines have fewer rings than diesel engines. Generally, gasoline engines use two gas rings and one oil ring; The diesel engine has three gas rings and one oil ring; Low speed diesel engines use 3-4 valve rings. To reduce friction loss, the height of the ring should be minimized as much as possible, and efforts should be made to reduce the number of rings while ensuring sealing.

Due to the fact that internal combustion engine pistons work under high temperature, high pressure, and high load conditions, the requirements for pistons are relatively high. Therefore, this article mainly discusses the classification of internal combustion engine pistons.

1. According to the fuel used, it can be divided into gasoline engine pistons, diesel engine pistons, and natural gas pistons.

2. According to the material used to manufacture pistons, they can be divided into cast iron pistons, steel pistons, aluminum alloy pistons, and combination pistons.

3. According to the manufacturing process of piston blanks, they can be divided into gravity cast pistons, squeeze cast pistons, and forged pistons.

4. According to the working condition of the piston, it can be divided into two categories: non pressurized piston and pressurized piston.

5. According to the purpose of the piston, it can be divided into car piston, truck piston, motorcycle piston, marine piston, tank piston, tractor piston, lawn mower piston, etc.

Technical Requirements Editing Broadcast

1. It should have sufficient strength, stiffness, small mass, and light weight to ensure the minimum inertial force.

2. Good thermal conductivity, high temperature resistance, high pressure, corrosion resistance, sufficient heat dissipation ability, and small heating area.

3. There should be a small coefficient of friction between the piston and the piston wall.

4. When the temperature changes, the size and shape changes should be small, and the minimum gap between them and the cylinder wall should be maintained.

5. Small coefficient of thermal expansion, small specific gravity, good antiwear property and thermal strength. [2]