Upping the pressure: A US company has developed a bushing-less piston that it says is able to meet the demands of low-emission engine manufacturers

摘要

Internal combustion engine manufacturers are using a variety of techniques to meet new-global legislation aimed at lowering CO_2 emissions, one of which is to increase the pressure at which the cylinders operate. Although effective, this technique also increases the pressure on engineers, who must make pistons that can perform under more arduous conditions.