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一、引言 近年来,高速柴油机的发展以及它作为车用动力装置与汽油机的竞争一直是基于其制动热效率高(特别是部分负荷时),可靠性好和不采用电火花点火。 虽然从来没有明确地规定柴油机和汽油机的使用范围,但在欧洲和北美其使用情况却截然不同。在欧洲,大约1.5吨(全车总重)以上的运输车辆通常都选用柴油机,而在北美约3.5吨(全车总重)以上的车辆才选用柴油机。在欧洲,柴油机用于出租汽车和私人汽车已
I. INTRODUCTION In recent years, the development of high-speed diesel engines and their competition with gasoline engines as vehicle power plants have always been based on their high thermal braking efficiency (especially at partial load), good reliability and no spark ignition. Although the scope of use of diesel and gasoline engines has never been clearly defined, their use is quite different in Europe and North America. In Europe, about 1.5 tons (gross vehicle weight) or more of the transport vehicles are usually selected diesel engines, while in North America about 3.5 tons (total weight of vehicles) above the vehicle only use diesel engine. In Europe, diesel engines are used for taxis and private cars