It is unknown who invented the filter. We only know that he was sandy and was used for water treatment four millennia ago in India.AFFILIATE MATERIAL
The first cars to live at all without filters. About online speech did not go — if only went. Now without a filter can not do any single automaker. And since the filters must be changed periodically, inevitably talk about how we should do it, and if they do, then why so often. Understand the main filtration myths.
1. The engine oil filter is more important air
Not at all. Each of the filters has its own work — this is true. The difference is that the oil filter works in a confined space of the engine, where from the outside do not penetrate the dirt and abrasive particles, and the air stands in the way of all that may fall with the air in the cylinders continue with washing the cylinder walls with oil in the system. Unlike oil filters, through which contaminated oil in the cleaning process may be repeated several times, the air filter needs to correctly remove dangerous contamination once and for all.
The word “filter” is coming from Rome: filtrum is “felt” in Latin. Compacted fleece Romans used to clean wine, water, olive oil. In contemporary cars, no sand, no felt filters to find the main filter element acts paper.
2. All filters are made from the same filter paper. Then why buy expensive?
Real filter paper, make a few. The most famous manufacturers Ahlstrom and Neenah Gessner. But every manufacturer makes filters part of the filter element adjustments depending on the characteristics of a particular engine. Some add synthetic fiber, others paper from a special tree species. Manufacturer of fiber does not disclose the technology to other manufacturers. Cheap the filters are made with the use of low-grade basic varieties of filter paper.
3. Instead of expensive filter you can put cheap, which only needs to be changed frequently
This is one of the most dangerous misconceptions: it is not necessary to replace the concept of “life” and “filter settings”. It is not the same thing. Cheap air filters as missed particles is twice or even three times larger than required by the plant, and will miss them, as the filters don’t change! Therefore, the installation of two, three or even four cheap filters on short intervals does not equal one of the authorized filter for the whole maintenance period.
4. All air filters are the same, you just pick the suitable size
Yes, all filters are identical in principle of operation but differ from one another by how well they do their job. Air filters are a specific type of engine based on its characteristics, frequency of service and locations under the hood. For each engine and model of car the filter is in accordance with the technical specifications of the manufacturer, which determines the interchangeability of filters. So external similarity does not mean equality.
5. The need for filter replacement can be identified by its appearance
Alas, it is not. To determine the threshold filter replacement is impossible neither in appearance nor smell, nor hearing, nor touch. The only criterion set by the manufacturer of the vehicle service life in kilometers. With the amendment, again the factory, for operation in heavy dusty conditions.
6. The air filter is the famous company is expensive, and cleans better cheap
Approval of Amateurs. First, the degree of purification on their own, without instruments cannot be checked. Second, none of the automakers sets cheap filters obscure companies. No one wants to take risks when it comes to such a crucial and expensive parts of the car as the engine. Thirdly, only filters authorized manufacturers provide the necessary degree of purification, because it was created by order of the automakers. Finally, the quality may not be worth a penny.
7. The air filter can be recovered by purge and to continue its operation on the car
Indeed, when flushing the filter is cleaned. But just as it is. Actually removes only the larger particles on the outer portion thereof. The fact that modern automotive filters operate on the principle of depth filtration. There, in the depth of the filtering material, and there is the subtle cleaning. Therefore, no venting will not restore the filter options, which came up for replacement.
8. On the fuel efficiency of the engine affects not the air filter, and only the sensor mass air flow
This is one of the biggest myths about filters. The main element of the detector MRV — wire of a noble metal to which voltage is applied. It heats up and depending on the air flowing around it more or less cold. The temperature change causes a change in its resistance. Depending on this, and generates a control signal on the number entering the engine air.
The MRV sensor need clean air which can provide only a high-quality filter. Cheap filter allows for contamination, which, settling on wires, breaking the heat transfer, the control unit receives distorted information. According to the calculations of MANN+HUMMEL, an error leads to increased 3-5% fuel consumption.
9. Some of the best quality filters MANN-FILTER. But they are too expensive because they are made in Germany where workers have a high salary
Yes, the filters MANN-FILTER is more expensive than the cheapest noname, but not because they are made in Germany, but because today it is one of the best quality filters for the car. The high wages of German workers — can’t argue with that, but the filters MANN-FILTER are manufactured not by hand. The process is almost completely automated: 80% of the cost of the filter is necessary for source materials, and only 20% is spent on labor. Given the output of these filters to get a cheaper sample is possible only by applying low quality materials and outdated technology of the Assembly. Buying filters MANN-FILTER, you pay mostly for the quality of the item.
10. Cabin air filters can only filter out dust and smaller particles, like pollen, is still missing
Among all automotive filters, the highest degree of filtering has a cabin filter. On average, it starts a particle size of 0.5 µm (for comparison, the thickness of a human hair is 70 microns). This size is the pollen of plants and many viruses. So installing a quality cabin air filter can prevent allergic and other diseases.
11. In the automotive filter is not used chemical cleaning air
Actually uses both chemical and electrostatic methods of struggle for the purity. Quality cabin air filters have an antibacterial impregnation that prevents the multiplication of the filter element of micro-organisms, fungi and mold. The validity of the impregnation is limited, so cabin air filters require annual replacement.
As for electrostatics, it is thus possible to capture particles of virtually molecular level. The filter draws them to himself and not let into the cabin.
11 myths about air filters: expose everything!11 myths about air filters: expose everything!
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