一、前言在毛主席“独立自主、自立更生”的伟大方针指引下,通过无产阶级文化大革命战斗洗礼的我厂广大职工,在上级党委的正确领导下,生产了江苏JS—140汽车发动机,但是几年来的使用证明,缸筒耐磨性较差,发动机的大修里程只有五、六万公里,有的甚至更少。曾采用镶入解放汽车所使用的锑合金铸铁缸套,里程也并没有显著增加。这就说明由于发 I. Foreword Guided by the great principle of Chairman Mao’s “independence, independence and self-reliance,” the vast majority of our factory workers, who were baptized through the fighting of the Great Proletarian Cultural Revolution, produced the Jiangsu JS-140 car engine under the correct leadership of the party committee at a higher level. However, Years of use proved that the cylinder wear resistance is poor, the engine overhaul mileage of only 5, 60,000 km, and some even less. Have used the antimony alloy cast iron cylinder liner used in the liberation of cars, mileage did not increase significantly. This shows that due to hair