保时捷将多孔硅预成型体集成到铝锭中，采用MMC制作气缸套;本田使用类似

Porsche porous silicon ingots integrated into the preform, the use of MMC making cylinder liner; Honda using similar methods to aluminum and carbon fiber combined into aperture die-cast aluminum. These measures to improve the wear characteristics and the cooling efficiency of the cast iron sleeve (vellingiri, 2018). Graphite, aluminum pistons and the liner reduces the coefficient of friction and wear rate of gasoline and diesel engines. Found friction coefficient of aluminum graphite composite up to 0.2 (vellingiri, 2018). Using lightweight aluminum engine block cylinder liner of such a material, the engine can quickly reach the operating temperature, while providing excellent abrasion resistance, improved cold start emissions and weight.

Porsche integrates porous silicon preformed bodies into aluminum ingots and uses MMC to make cylinder liners, while Honda uses a similar method to combine aluminum and carbon fiber into die-cast aluminum holes. These measures improve the wear characteristics and cooling efficiency of cast iron bushings (vellingiri, 2018). Aluminum graphite pistons and bushings reduce the coefficient of friction and wear in gasoline and diesel engines. The measured coefficient of friction of aluminum graphite composites is as low as 0.2 (vellingiri, 2018). The use of this material in the lightweight aluminum engine block of the cylinderliner allows the engine to reach operating temperature faster while providing excellent wear resistance, improved cold start emissions and reduced weight.

Porsche integrates the porous silicon preform into the aluminum ingot and uses MMC to make the cylinder sleeve; Honda uses a similar method to combine the aluminum and carbon fiber into the die-casting aluminum hole. These measures have improved the wear characteristics and cooling efficiency of cast iron bushings (vellingiri, 2018). The aluminum graphite piston and bushing reduce the friction coefficient and wear rate of gasoline and diesel engines. The measured friction coefficient of the aluminum graphite composite is as low as 0.2 (vellingiri, 2018). Using this material in the light aluminum engine block of the cylinder liner can make the engine reach the working temperature faster, meanwhile, it can provide excellent wear resistance, improve the emission of cold start and reduce the weight.