论文部分内容阅读
本文介绍云南公路的海拔高度等情况,和提高东风EQ-140型货车性能的途径。首先在海拔高度1500米进行发动机台架试验以确定较好的压缩比、凸轮轴夹角、与化油器型式,最后确定当使用66汽油时,压缩比为7.2,凸轮轴夹角为106°45′,和H201型双腔差动式化油器为较好。按上述参数改进的发动机与原型发动机进行了装车整车性能与使用试验。并有后桥减速比原车的6.33和增加到6.83两种速比,试验时测出时间、距离、油耗量以及发动机冷却液,机油,变速器和后桥润滑剂的温度等,证明上述改进有较好的效果。用较大的减速比也有利,但尚需进行更长期的使用观察对比。
This article describes the altitude of Yunnan Highway, etc., and improve the performance of Dongfeng EQ-140 truck approach. Engine bench test was first carried out at an altitude of 1500 meters to determine better compression ratio, camshaft angle, and carburetor type. Finally, when 66 petrol was used, the compression ratio was 7.2 and the camshaft angle was 106 ° 45 ’, and H201 double-chamber differential carburetor is better. According to the above parameters improved engine and the prototype engine was loaded vehicle performance and use test. And the rear axle deceleration than the original car 6.33 and increased to 6.83 two speed ratio, the test measured time, distance, fuel consumption and engine coolant, oil, transmission and rear axle lubricant temperature, etc., to prove that the above improvements Better effect. With a larger reduction ratio is also beneficial, but still need more long-term observation of the use of contrast.