一、改善旧机性能的必要性长江195—12型柴油机是我省主要的小型动力机,全省保有量约20万台,(拖拉机用约16万台)在发展我省农业生产、实现农业机械化中起着重要作用。八十年代初期出厂的柴油机燃油消耗率为258.3～266.5克/千瓦·小时(190～195克/马力·小时)。经过几年使用后,其技术性能急剧恶化。1985年全省检测2.4万台,平均功率只有6.25千瓦(8.5马力),燃油消 First, the need to improve the performance of the old machine The Yangtze 195-12 diesel engine is the province’s main small power machine, the province holds about 200000 units (about 160,000 tractors) in the development of agricultural production in our province to achieve agricultural mechanization Plays an important role. The diesel engine fuel consumption rate of the early 1980s was 258.3 ~ 266.5 g / kWh (190 ~ 195 g / hh). After several years of use, its technical performance has deteriorated drastically. In 1985, the province tested 24,000 units with an average power of only 6.25 kilowatts (8.5 horsepower) and fuel consumption