针对某汽车空调用斜盘式压缩机在怠速工况下运转时引起的车内噪声的问题进行了试验研究。
In this paper, an experimental research is carried out on the car interior noise caused by air conditioning compressor during idling condition.
针对某汽车空调用斜盘式压缩机在怠速工况下运转时引起的车内噪声的问题进行了试验研究。
On this paper, an experimental research is carried out on the car interior noise caused by air conditioning compressor during idling condition.
针对怠速工况分别设计了变参数PID控制系统和模糊控制系统，并进行了实车试验对比。
In this paper, both PID controller with variable parameters and fuzzy logic controller for idling model are designed and evaluated by field tests on a production vehicle.
同时，在发动机台架试验台上研究了该系统的怠速启停控制功能和控制器输入输出响应性能。
Meanwhile, this paper verifies the function of engine idling start-stop control system and the performance of controller IO response using the engine testing bench.
试验表明，该预测控制方法能够较好地克服各种不确定性因素和复杂变化对怠速稳定性的影响。
It is proved by tests that this control method can effectively prevent idling stability from various uncertain factors and complicated change.
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.
怠速工况试验表明，优化后的挂钩不仅降低了车内驾驶员右耳侧噪声，而且减小了排气系统传到车身地板的振动。
Test result shows that vibration from exhaust system to floor and sound pressure to driver's right ear on idle running are reduced with the optimized hanger systems.
试验结果表明，催化转化器的位置距排气口近可提高排气温度，大大提高催化转化器的转化效率；推迟点火提前角和提高怠速转速均有利于使催化转化器进入快速起燃状态。
Experimental results show that the position of the converter nearer to the exhaust port, the retard ignition timing and the higher idle speed can promote the catalytic converter light-off.
试验结果表明，催化转化器的位置距排气口近可提高排气温度，大大提高催化转化器的转化效率；推迟点火提前角和提高怠速转速均有利于使催化转化器进入快速起燃状态。
Experimental results show that the position of the converter nearer to the exhaust port, the retard ignition timing and the higher idle speed can promote the catalytic converter light-off.
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