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1.内燃机节能的重要意义动力机械的发明与发展与能源的开发与发展息息相关。如果说十八世纪蒸汽机的问世及其发展的基础是煤,那么十九世纪内燃机的发明及其发展的基础便是石油。1876年由德国发明家奥托研制成功的第一台四冲程往复式内燃机是煤气机,当时照明煤气是容易得到的能源。但煤气机的热效率低(当时只有10～12％),煤气发生装置又大大束缚了煤气机应用的发展。正在那个年代,石油开采迅速发展,热值高的汽油、柴油产品引人注目,这就导致了
1. The significance of energy-saving internal combustion engine The invention and development of power machinery and energy development and development are closely related. If the advent of the 18th century steam engine and its development were based on coal, then the invention of the nineteenth century internal combustion engine and its development was based on oil. The first four-stroke reciprocating internal combustion engine developed by the German inventor Otto in 1876 was a gas engine, when lighting the gas was readily available. However, the thermal efficiency of the gas engine is low (only 10 to 12% at the time) and the gas generator greatly limits the development of the gas engine application. At that time, the rapid development of oil extraction, high-value gasoline, diesel products attract the attention, which led to