原文：
          在对车辆进行常规维护时，空气滤清器和压力调节阀PCV容易被忽视。而且，常常是当它们堵塞并危及到发动机正常工作时，才会受到亡羊补牢般的更换维护。为了避免发动机过早的磨损(非正常)和保持最佳的工作状态，对空气滤清器和压力调节阀PCV进行定期的检查和更换便显得至关重要了。

　　我们强调对空气滤清器进行预防性维护并非是夸大其词。在吸入空气与燃油混合之前，空气滤清器滤去空气中灰尘、碳及其它杂物，从而保证了吸入空气的清洁。事实上，每单位体积的燃油燃烧时，约需要有1万单位体积的空气通过滤清器。电动执行器并且再微小的颗粒污垢也会导致发动机相关内部零部件的严重磨损。

　　通常，制造商推荐空气滤清器正常维护的更换周期为4.8万km，且每2.4万km进行一次常规检查；其保守维护的推荐更换周期为2.4万km。　　大气中含有三种密度不同的基本颗粒污染物，即灰尘、疏水阀残渣和碳粒。在开放式高速公路上，其灰尘含量较农村和建筑区低。在灰尘浓度较大的区域，空气滤清器的检验和更换频率要高一些。在高速公路和交通拥挤的区域，因为汽车排放物集中，所以衬里阀门其空气中碳的含量明显偏高。

　　在进行日常的机油更换时，顺带检查一下空气滤清器不失为一种两全其美的好习惯。此时，拿下滤清器，仔细查看其皱褶内部深处。有时，滤清器外部看似清洁，但是其内部已经非常脏了，此时必须立即进行更换。

　　PCV系统将窜漏进曲轴箱的混合气引入进气系统，然后在燃烧室内进行二次燃烧。天长日久，机油、汽油及其它浓缩物在PCV阀内部沉积成油泥胶体，造成PCV阀堵塞，从而提高了曲轴箱内部的气体压力。该压力的提升导致机油特殊阀门从密封圈或密封垫处渗漏，造成额外的机油消耗和发动机泄漏等故障。另外，曲轴箱的压力提高使得PCV蒸气通过粘有机油和HC化合物颗粒的空气滤清器，必然降低了其应有的过滤精度。当沾粘异物的PCV不能完全关闭时，不适量的空气将被引入燃烧室，进而稀释了空气/燃油混合气，最终导致汽车的怠速性能恶化和易熄火。

　　大多数制造商提供的PCV阀正常维护的推荐更换周期为9.6万km；电磁阀保守维护的更换周期为4.8万km。无论如何，在检查空气滤清器的同时，务必检验PCV阀是否发生堵塞和粘结。福特PCV阀的推荐更换周期根据具体车型的不同为9.6～16万km不等；通用公司也根据不同车型提供了相应的PCV阀的推荐更换周期，其数值范围也较宽广。当您对正在进行维修的车辆的PCV阀更换周期存有疑虑时，请及时查阅车主手册或维修资料。

“ Filter and pressure regulator valve to maintain ”是由中国调节阀网提供的国际阀门新闻，译文仅供参考。另外，中国调节阀网还提供相关产品搜索： CV3000调节阀、 电动调节阀、 气动调节阀 水力调节阀、 执行器和附件等。

译文：
          Routine maintenance on vehicles, air filter and pressure control valve PCV easier to ignore. Also, often when they endanger the engine block and normal work, will be subject to remedial maintenance like replacement. In order to avoid premature engine wear (non-normal) and maintain the best working conditions, on the air filter and PCV valve pressure regulator regular inspection and replacement appears to be essential. We emphasize preventive maintenance on the air filter is not an exaggeration. Inhalation of air and fuel mixture before the air filter to filter the air of dust, carbon and other debris, therebyMUD VALVES ensuring clean air inhalation. In fact, per unit volume of fuel burning, some need to have 1 million units of volume of air through the filter. And another small dirt particles can cause serious engine wear and tear related to internal components. Usually, manufacturers recommend regular maintenance of air filter replacement period is 48 000 km, and every 24,000 km for a routine check; its conservative maintaining the recommended replacement cycle for 24 000 km. Density of the atmosphere contains three kinds of basic particles of different pollutants, namely dust, debris and soot. In the open highway, the dust content areas than in rural areas and building low. Dust concentration in the larger region, air filter inspection and replacement frequency is higher. Highways and traffic congestion in the area, because emissions from vehicles concentrated, so the air in the carbon content was high. When conducting routine oil changes,REDUCING VALVES incidentally, check the air filter after all, a best of both worlds for good practice. At this point, won the filter, look carefully inside the depths of its folds. Sometimes, the external filterSAFETY VALVES looks clean, but the interior has been very dirty, and then must be replaced immediately. PCV system into the crankcase blow-by gas mixture into the intake system, and then secondary combustion in the combustion chamber. Over time, engine oil, gasoline and other concentrates, deposition in the PCV valve into the sludge within the gel, resulting in PCV valve plug, thereby increasing the gas pressure inside the crankcase. Enhance the result of the pressure oil from the seal or seals of leaking, causing additionalPLUG VALVES leaks oil consumption and engine failure. In addition, increased pressure on the crankcase vapors through the PCV make a sticky oil and HC compounds, particulate air filter, will certainly lower the accuracy of its proper filtration. When adhesions PCV foreign bodies can not be completely closed, not the right amount of air into the combustion chamber will be, and then diluting the air / fuel mixture, leading to deterioration of the car and easy to turnMULTI-FUNCTIONAL WATER PUMP CONTROL VALVE off idle performance. Most manufacturer's recommended normal maintenance and PCV valve replacement cycle is 96 000 km; conservative replacement cycle for the maintenance of 48,000 km. In any case, check the air filter at the same time, be sure to test whether the PCV valve clogging and binding. Ford PCV valve replacement cycle depending on the recommendation of the different models of 9.6 ~ 160 000 km range; GM also provided according to different models corresponding recommended PCV valve replacement cycle, its value range broader. When you repair vehicles on the ongoing PCV valve replacement cycle when there are concerns, please access the owner's manual or maintenance information.

原文来源：http://www.1tiaojiefa.com/

2010-08-30 07:24

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