修后发动机功率应不低于额定值的95%,耗油率则不得大于额定值的2%.我厂大修后一次试验合格率(经气门间隙、供油时间等常规调整)仅占40%左右,而多一半发动机则要排除各种故障后,才能达到合格或接近合格.我们认为关键要紧紧抓住供给、压缩及配气大三系统,进行认真分析,就可掌握一些规律. 在测功时功率不足的普遍现象是:加负荷时转速跌落快、达不到规定扭矩;功率相差不太多,多数是 Repair engine power should be not less than 95% of the rated fuel consumption rate of not more than 2% of the rated after the overhaul of a test pass rate (by the valve clearance, fuel supply and other conventional adjustments) only 40% About half of the engine will have to rule out a variety of faults, in order to achieve or close to qualified .We think the key should firmly grasp the supply, compression and gas distribution system, careful analysis, you can grasp some of the rules in the test Power when the power shortage of the common phenomenon is: plus load speed drop quickly, less than the prescribed torque; power difference is not too much, most are