我厂自1966年开始制造GZ—140型红卫牌3.5吨载重汽车,并于1970年开始生产红卫牌汽车的694Q汽油发动机(1970年前694Q发动机由广州动力机厂生产)。当时使用单位普遍反映发动机气缸体、曲轴等主要易损件不耐磨,大修里程一般只有3万公里左右,机油消耗量大,新车经一万公里行驶后机油耗量达每公里1～2公斤,甚至更多一些。因连杆轴承烧瓦 Since 1966, our factory has started to manufacture GZ-140 Hongwei 3.5-ton truck and started production of Hong-Wei car 694Q gasoline engine in 1970 (the 694Q engine was manufactured by Guangzhou Power Plant in 1970). At that time, units commonly used reflected the engine cylinder block, crankshaft and other major wearing parts are not wear-resistant, overhaul mileage is generally only about 30,000 km, oil consumption, the new car by 10,000 km after driving oil consumption of 1 to 2 kg per kilometer , Even more. Due to connecting rod bearing bush