论文部分内容阅读
火星塞孔镶锆铜套后,由于锆铜的导热系数接近电介铜,且具有耐热和膨胀系数小的优点,铜套外元直接和冷却水接触,使火星塞的冷却条件大大改善,点火孔处的温度降低,缸体在火星塞处的局部热胀突起减少(已有三台发动机在台架试验后如此),改善了燃烧室的密封和缸体刮片之间的润滑条件,且可使点火时间较不镶锆铜套时提前4°—7°,提高了发
Mars plugged zirconium copper sleeve, zirconium copper thermal conductivity close to the dielectric copper, and has the advantages of heat resistance and small expansion coefficient, copper outer directly contact with the cooling water, the Mars plug cooling conditions greatly improved, The temperature at the ignition hole is reduced, the local bulging of the cylinder at the spark plug is reduced (three engines already have been tested on the gantry), improved sealing of the combustion chamber and lubrication conditions between the cylinder blades and Ignition time can be set less zirconium copper sleeve advance 4 ° -7 °, increased hair