二冲程发动机,由于结构简单,体积小,油耗低,机械效率高,输出功率大。一问世就受到人们的重视。但因为配气技术落后,导致振动厉害,噪声较大;排黑烟严重等一系列致命弱点,故多年来的进展十分缓慢,人们印象甚为淡薄。 直至本世纪80年代中期,由于汽车技术的进步,尤其是电子技术的飞速发展,电子控制的直接喷射系统在 Two-stroke engine, due to simple structure, small size, low fuel consumption, high mechanical efficiency, output power. As soon as it came out, it received the attention of people. However, the outdated gas distribution technology has led to a series of atrocities such as severe vibration and loud noise; serious black smoke emission and so on. Therefore, the progress made over the years has been very slow and the impression is very weak. Until the mid-80s of this century, due to the progress of automotive technology, especially the rapid development of electronic technology, electronically controlled direct injection system