1.1.1 试验方法Test method
1.1.1.1 操作方法 Operation method
起动加速过程试验：选择一段或几段较长的平直道进行试验，将0~250km/h起动加速试验分为多个速度段进行，后一个速度段的初速低于前一个速度段的末速。分段试验时，保证各速度段内动车组均在平直道上，且司机手柄均保持在牵引满级。
Acceleration process test of starting: conduct the test on one or several sections of long and straight rails, and divide the acceleration test of starting from 0 to 150km/h into several speed sections, and the initial speed of the latter speed section should be less than the terminal speed of the former speed section. During the segmentation test, the MU should be on straight rails in all speed sections, and the driver’s handle should be maintained at full stage of traction.
加速度试验：起动加速度和剩余加速度试验可与起动加速过程试验合并进行，在相同的加速过程测量。测试250km/h剩余加速度时，平直道长度应能覆盖列车加速度计算所需的速度区间。
Acceleration test: the starting acceleration and residual acceleration test can be combined with the acceleration process test of starting, and they can be measured at the same accelerating process. While testing the 250km/h residual acceleration, the length of straight rail should cover the speed range required for the calculation of train acceleration.
部分动力运行试验时，切除1/5动力，验证动车组是否能在平直道上以230km/h的速度运行；切除2/5动力，验证动车组是否能在平直道上以200km/h的速度运行。
During partial power operation test, remove one fifth of the power, verify if the MU is running on straight rail with the speed of 230km/h; remove two fifth of the power, verify if the MU is running on straight rail with the speed of 200km/h.
华译网北京翻译公司翻译过有关动车组加速度试验的技术文件资料,Beijing Chinese Translation Service Company has translated many technical documents of MU Acceleration test
1.1.1.2 计算方法Computation method
列车在平直道上进行加速，测量列车速度和加速时间，平均加速度的计算公式如下：
The train should accelerate on straight rail, measure the speed and accelerating time of the train, and the computational formula of average acceleration is as follows:
式中： Where:
、 运行速度，km/h( > )；
Running speed, km/h ( > );
从 加速到 所用的时间，s；
Time required by accelerating from to , s
加速度，m/s2。
Acceleration, m/s2.
1.1.2 试验评定Test Evaluation
额定载荷时的起动加速度>0.6m/s2( 0～50km/h)；
Starting acceleration under rated load >0.6m/s2( 0～50km/h);
250km/h时的剩余加速度≥ 0.05m/s2；
Residual acceleration when the speed is 250km/h ≥ 0.05m/s2;
切除1/5动力，动车组可满足平直道上230km/h的速度运行；
Remove one fifth of the power, the MU can be running on straight rail with the speed of 230km/h;
切除2/5动力，动车组可满足平直道上200km/h的速度运行。
Remove two fifths of the power, the MU can be running on straight rail with the speed of 200km/h;
