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本文着重介绍用铝—石墨复合材料制造的活塞在内燃机上试验的结果。由于这种复合材料具有热嘭张系数小、摩擦系数小等一系列优点,因此,用它制造的活塞在内燃机中使用时可减小配缸间隙,从而能提高效率,降低机油消耗,使内燃机超负荷运行能力增强,燃油消耗较原用活塞有明显降低。试验结果表明,铝—石墨复合材料是制作内燃机活塞的较理想材料之一。
This article highlights the results of experiments on internal combustion engines using pistons made of aluminum-graphite composites. The composite material has the advantages of small thermal expansion coefficient and small friction coefficient. Therefore, the piston made of the composite piston can reduce the cylinder clearance when used in an internal combustion engine, so as to improve the efficiency and reduce the oil consumption, so that the internal combustion engine Increased capacity to run overload, the fuel consumption significantly lower than the original piston. The experimental results show that the aluminum-graphite composite material is one of the ideal materials for the production of internal combustion engine pistons.