概况在柴油机燃烧室、活塞、气缸盖、气阀等一些重要部件上采用陶瓷材料巳愈来愈引起人们的重视[2]。由于采用陶瓷材料后,允许的工作温度可显著地提高,从而提高了热效率。此外,由于取消了水冷却系统[10],因而彻底解决了冷却水系统方面所产生的漏水和水质问题[1],同时提高了涡轮增压器所回收的排气能量,使整个柴油机的经济性提高30％(一般而言,车用柴油机有效功占输入能量的35％,排气占36％,冷却水占26％[1])。在功率相同 At a Glance Ceramic materials have been attracting more and more attention in some important parts of diesel engine combustion chambers, pistons, cylinder heads and air valves [2]. As the use of ceramic materials, the allowable working temperature can be significantly improved, thereby increasing the thermal efficiency. In addition, due to the abolition of the water cooling system [10], water leakage and water quality problems in the cooling water system are completely solved [1], and the exhaust energy recovered by the turbocharger is increased at the same time, so that the economy of the entire diesel engine In general, the effective use of diesel engine is 35% of input energy, 36% of exhaust gas and 26% of cooling water [1]. At the same power