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1.陶瓷发动机研究的蓬勃兴起为什么目前国际上对陶瓷发动机的研制如此感兴趣并投入大量人力物力竞相研究和开发呢?这个问题得从内燃机的热效率谈起。我们知道,发动机的热效率是进入发动机的燃料的含热量转变为机械能的热量之比。汽车和拖拉机发动机的热效率在26％到37%之间。对于汽油机,它趋向于下限,而柴油机是偏向上限。在正常工作状态下,燃
1. The rise of the research of ceramic engines Why is the current international development of ceramic engines so interested in and put a lot of manpower and resources competing research and development it? This question has to talk about the thermal efficiency of internal combustion engines. We know that the thermal efficiency of an engine is the ratio of the amount of heat converted into mechanical energy of the fuel entering the engine. Automotive and tractor engines have thermal efficiencies between 26% and 37%. For gasoline engines, it tends to the lower limit, while the diesel engine is biased towards the upper limit. In normal working conditions, burning