2013年3月11日星期一

Automotive engine piston and piston rings BMW GT1 DIS V57

Piston engine is one of the main BMW GT1 DIS V57 components in the engine, piston group, with the cylinder head piston rings, piston pin parts together to form a combustion chamber to withstand the gas force and power to the crankshaft through the piston pin and connecting rodto complete the work of the internal combustion engine process.

As the piston is in a high-speed, high-pressure and high-temperature harsh working environment, but also taking into account the engine runs smooth and durable, thus requiring the piston must have enough strength and stiffness, good thermal conductivity, high heat resistance, expansion coefficient (changes in size and shape to be small), the relatively low density (light weight), the wear-and corrosion resistance, but also low cost.

More high, some BMW GT1 DIS V57 requirements contradict each other, it is difficult to find one able to fully meet the requirements of the piston material. Modern engine piston generally made ​​of aluminum alloy, because the aluminum alloy material has a low density, good thermal conductivity prominent advantages, but also that expansion coefficient is relatively large, relatively poor high temperature strength shortcomings, these shortcomings can only be reasonable structure design in order to meet the requirements. Therefore, the quality of the merits of a car engine, not only depends on the materials used, but also depends on the design of rationality.

General piston is cylindrical
Autocom   body, according to the working conditions and requirements of the different engine piston constructor various general p

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