车用空调膨胀阀结冰故障分析

译文:
问:本人单位的一台1989年款式的三菱帕杰罗的空调出现以下症状:当时速在40公里以下时,制冷效果相当好,超过这个速度,效果则直线下降,60公里以上时基本上无制冷了,请师傅给予指点。 答:首先确定60公里/小时以后空调压缩机是否工作,如果压缩机不工作,必须检查空调线路,包括检查空调压缩机、继电器、压力开关、水温开关和空调控制器,假如压缩机工作正常,但不制冷,有可能是压缩机不停地工作,造成膨胀阀结冰,从而不制冷。 我们要明白当汽车室内达到一定的温度(如5℃)时,压缩机、控制器就切断压缩机的控制电源,从而防止膨胀阀结冰,控制器主要根据蒸发器出风口的温控开关来切断压缩机电源的,所以最方便检查温控开关好坏的方法是:将温控开关接头拔掉,然后查看压缩机是否工作。如果压缩机还工作,可能是空调控制器损坏,或是温控开关和空调进气温度传感器位置装错。否则,温控开关损坏。 君威2.0磨合期注意事项 问:能不能介绍一些君威2.0的磨合期注意事项? 答:君威2.0磨合期注意事项: ①尽量避免急加速,猛踩油门,限制车速,一般情况下车速不要超过100公里/小时,尽量采用中速行驶; ②起动发动机后,{zh0}使发动机怠速工作几分钟,让水温升至正常工作温度后,再开动车辆; ③平时,注意观察有无漏油、漏水、漏电情况; ④行驶3000公里左右,应更换机油、机油格,对车辆做强保。 广州汽车装饰品集中地 问:广州市什么地点买汽车装饰品又便宜又好?多谢! 答:以下提供三个大型汽车装饰品广场,东西又便宜又好: ①永福路,福怡汽车用品城; ②永福路,倚云汽车用品广场; ③白云区黄石东路,安华汽车装饰城。 POLO换宽胎油耗增加正常 问:我的爱驹:POLO手波1.4升刚换了195.55.15(固特异)宽胎,全程空调原耗油8L/100KM,现耗油10L/100KM,请问正常吗? 答:POLO手波1.4升更换宽胎后,油耗比原来大是正常的,因为使用宽胎后,与地的接触面积增大,阻力增大,相应地增加一些耗油是正常的。 防爆太阳膜简介 问:请介绍两款物美价廉的防爆膜? 答:早期的太阳膜纯粹只有遮光作用,现在出现的防爆太阳膜,国外称为金属膜。称“防爆”并非有防弹作用,而是因为汽车出事后,玻璃爆裂,贴在玻璃上的这层膜,防止玻璃片四处飞溅,降低对人体伤害;另一方面可以隔热,防紫外线等。 目前市面上各方面性能较好的有3M、雷朋,但价格较高;其他的品牌也较多,列举2例,如加丽、太阳宝,价格较便宜。

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原文:
Q: I have a unit of Mitsubishi Pajero 1989 models of air-conditioning the following symptoms: At that time, when speed of 40 km or less, very good cooling effect, more than this rate, the effect is plummeting, 60 kilometers above is basically no refrigeration, please teacher for pointing. A: First determine the 60 km / h after the air conditioner compressor is working, if the compressor does not work, you must check the air conditioning lines, including inspection air-conditioning compressors, relays, pressure switches, temperature switches and air-conditioning controller, if the compressor is working correctly , but not cooling, compressor may be non-stop work, resulting in expansion valve freezing, so as not to cooling. We have to understand when the vehicle interior reaches a certain temperature (eg 5 ℃), the compressor, the controller will cut off the compressor control power supply in order to prevent freezing expansion valve, the controller mainly based on the evaporator outlet temperature control switch out of cut off the compressor power, so the most convenient way to check the temperature switch is good and bad: The temperature control switch connector disconnected, and then view the compressor is working. If the compressor has to work may be air-conditioning controller is damaged, or the temperature-controlled switches and air-conditioning intake air temperature sensor location loaded wrong. Otherwise, the thermostat switch is damaged. Regal 2.0 run-in period Note Q: Can you introduce some breaking-in period Regal 2.0 Notes? A: The Regal 2.0 run-in period Note: ① try to avoid hard phases of acceleration, Meng stepped on the accelerator, speed limits, under normal circumstances the speed should not exceed 100 km / h, maximize the use of medium-speed traffic; ② After starting the engine, it is best to make the engine idle a few minutes of work, so that the water temperature rose to normal operating temperature, the re-starting vehicles; ③ In peacetime, to observe whether the oil spills, leakage, leakage situation; ④ travel 3,000 km or so, should be replaced oil, oil cells, and stronger protection for vehicles. Concentration of Guangzhou Automobile accessories Q: What locations in Guangzhou City, to buy car accessories and cheap and good? Thank you! A: Here are three large automobile decorations Square, things were cheap and good: ① Yongfu Road, FUYI automotive supplies City; ② Yongfu Road, Forest cloud car supplies Square; ③ Huangshi Road, Baiyun District, Anwar Automotive Trim Castle. POLO limited capabilities for increased fuel consumption and normal Q: I love horse: POLO hand-wave 1.4-liter has just changed 195.55.15 (Goodyear) limited capabilities, full air-conditioning of the original fuel 8L/100KM, the current fuel 10L/100KM, ask normal? Answer: POLO hand-wave 1.4-liter replacement of limited capabilities, the fuel consumption than the original big is normal, because, after limited capabilities, and ground contact area increases, the resistance increases, a corresponding increase in number of fuel consumption is normal. About Taiyang Mo Explosion Q: Please introduce two inexpensive explosion-proof membrane? Answer: In the beginning was merely Taiyang Mo shading effect, and now there's proof Taiyang Mo, known as the metal film abroad. Referred to as "proof" is not a bullet-proof effect, but because the car after the accident, the glass burst, attached to the glass of this layer of film, to prevent the glass flying everywhere, reducing impact on human health; the other hand can be insulated, anti-ultraviolet, etc. . All properties currently on the market are better 3M, Le Pen, but the price is higher; other brands are also more, citing two cases, such as Jia Li, Sun Bao, the price is cheaper.


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