通过试验找出了诸因素对怠速排放污染物浓度的影响规律，如混合气质量，点火，发动机转速，冷却水温度及燃烧室表面积炭等。
These factors are mixture concentration, ignition advance Angle, engine speed, temperature of cooling water and carbon deposit on the SUrfaces of the combustion chamber, etc.
经5000多小时试验表明，改进结构比其他两组密封部件的性能优越，当注入水温度变化时，泄漏量相当稳定。
More than 5000 hours test showed that the advanced design is superior to the former ones. The leakage flow is fairly stable with the change of the temperature of injection water.
所有蒸汽老化试验机都设有蒸汽温度或水温监测和控制机构，对测试时长进行自动定时控制。
All systems provide complete monitoring and control of steam or water temperature and feature automatic timing of the test duration.
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