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Thread: K&N Air Filter Facts and Benefits

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    Rex
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    K&N Air Filter Facts and Benefits

    Laboratory testing of K&N air filters

    Anyone who has even a basic knowledge of combustion engines know that an air filter is responsible for ensuring supply to the engine as clean air for combustion to limit wear to the dust particles in the air. Logically, therefore, has an engine without the air filter has a much shorter life span than with air filters. If this is true, why we see so many engines, some very expensive racing engines, which are completely equipped even without an air filter? Which factor can be so important that it is above the power of the engine with purified air? The answer to these questions in a short word: air flow.


    Maximum power and torque are in direct dependence on the amount of air that can be supplied to the suction side. In open systems is very conscious decision not to air filter and a more accomplished performance at the expense of engine life.

    In long distance races often raises the engine wear to the fall of an open system gained more power, and for the repair of these engines significant cost. It is not hard to understand why a motor that comes without filter has a very short lifespan. The life of an engine without an air filter of course, depends greatly on the conditions under which is being driven. In dusty off-road conditions, the engine can be destroyed in no time. On the other hand, is a road vehicle that is not run under these conditions, is also not easily damaged? Even under ideal conditions, it is uneconomical to drive without air filter.

    If we assume that normal engines that run on air filters, a life of more than 150,000 km, have engines without air filters are usually broken after only 60,000 km. Performance test of leading Formula 1 teams have proved that K&N Filters have no performance loss compared to an open system. On some vehicles, even a performance gain was measured, which was created by a less turbulent air.
    Last edited by Parth; 03-21-2012 at 03:30 PM.

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    Rex
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    Why the K&N filter has been developed?

    For a moving car in normal traffic, whether tuned or not, it is therefore not very useful to shorten the motor life by half or more, or risking costly repairs. The previous application of an air filter is therefore essential for these engines. K&N filters were originally developed for the needs of vehicles that are used in desert racing. During the desert race, often over a distance of 1000 km or more to go, the cars literally disappeared into their own dust cloud that every conventional filter unusable within a very short time. Thus the first filter change was mostly already announced after 100 km.





    Assistance arrived until the new K&N filter, so that drive today about 90% of all participants with the K&N cotton filter, which not only protect expensive racing engines optimally for wear, but by keeping problems desert race over 1000 km without replacement. It was only logical to make under these extreme conditions and proven advantages to conventional combustion engines accessible. The next and most important phase of development began, therefore the production of replacement filters for cars, trucks, MOTORCYCLE, FLY and BOAT MOTORS and other areas, such as grinders, saws, etc. While in racing engines, only the performance counts, are filter under normal use and a cost factor . K&N is in this little essay on this in more detail back detail.

    Air Filter Design

    An effective air filter unit, two factors are of paramount importance:

    - The filter element
    - The filter box

    Standard air filter and air filter boxes can usually less by air, can be processed as motors. This is mostly due to the noise and emission regulations. Often it is also due to present a larger air box no longer sufficient space was so by design. If you now replace the original filter with a K&N Filter, the potential of the air filter box is optimized. With a K&N air filters to ensure that as much air flow into the intake system, as if you ever have any air filters in the filter box. Nevertheless, you comply with the noise and emission regulations. For engines with fuel injection often results in a performance gain. The improved air flow volume of the mixture is set up quickly and made ​​available. The engine responds more spontaneously to the throttle and sets the faster filling of the cylinder in better acceleration. For engines with fuel injection are commonly used flat panel filters with less filter area than the conventional round filter. A comparison of plate and filter paper from K&N Filters has been found in several types, that K&N panel filter to pass through up to four times more air.




    For motor sports a 360 degree open K&N filter is best. This sport filter boxes, or universal filter replace the original air box and the item. Due to the large air passage and the 360 angle of attack, the motor power can be increased by about 5 to 10%. Some race cars, there were even performance improvements of up to 20%. Of course, such an increase is very rare.

    Note: All K&N Air Filter and Universal boxes are designed exclusively for racing. Use of these air filters in the street use is not permitted. K&N filter, however, are not subject to registration and therefore admissible.

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    Rex
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    Off-Road

    For off-road vehicles is the primary function of an air filter to clean the air. Without air filters, the engine would probably not witness the end of the race. If you want to win, you must first reach the target. Perhaps you're wondering: Why not use a paper filter, which are cheap, good filter, although in many cases, the air flow is reduced. Unfortunately, the principle of filter paper filters not exactly the most suitable person for off-road use. In these filters, a special filter paper works with thousands of tiny holes to trap the dust particles by means of extremely small holes. Be blocked by the particles more and more holes and the air seeks the path of a "still goes through / no longer goes by" system. The filters are then usually pretty quick to make and with almost no air left. During a 800 km race that can mean up to 30% less power and fuel consumption increases dramatically. From the time not to mention that is lost when the filter should be changed 2-4 times during a race. Not so with K&N. For a K&N air filter can increase up to 3 mm dust and dirt without losing much power.




    Street racing

    For normal motor sport is the power of the engine of the utmost importance. A K&N high performance air filter here can be of great importance. If the restriction of air flow is low and the air box is perfectly proportioned, with such a system, more power can be obtained, as compared to an open system. In road racing is often thought that the amount of dirt and dust that comes through the suction line into the engine is very low. This is not the case. You can also do this yourself check by installing an air filter at the next race. When a vehicle moves behind another in the long term, becomes trapped in the filter a lot of dirt, rubber and sand whirled. Without filtering, this would all be drawn directly into the engine. If you consider that air filters are a bit cheaper than racing engines, this is probably an argument for the use of air filters.





    K&N in Motorsport

    In the late 70s and early 80s drove the most competitive vehicles, if they ever used a filter with foam filters. Regarding the filtering they were worse than the original filter. Only with the introduction of K&N filters, there was a dramatic turn. From 1986 won the first Formula 1 cars with K&N filters, the World Cup. In subsequent years, the successes are beginning to develop, so that in 1997 alone went 10 of 13 Formula 1 teams with K&N filters. There were also several victories in different classes are obtained. Whether the rally, autocross, or in the World Touring Car Championship, winning the class went mostly with K&N filters.

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    Rex
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    Why did you change?

    Robust construction, high air flow and optimum engine protection under all conditions. This K&N has made ​​it one of the leading competitive filters. K&N Filters have nearly 40% more air through than conventional filters. This allows a production of smaller filters. Ideal to suit the requirements of the Formula 1 cars. And in addition, more dirt and dust is filtered, it can do as a foam filter. It is no wonder that K&N Filters more competitive than any other manufacturer sells.

    K&N for normal road vehicles

    Modern engines, as they are built today have similar requirements, such as the racing engines. It must, however, some additional factors to be considered. For normal engines, we need air filters that are large enough to provide the required air flow, but also turn small enough so that the filter can be installed in the engine room. The filter should have a long life, be inexpensive and environmentally friendly. K&N filters meet these requirements perfectly. Because the K&N filter pays for itself by itself. You buy it once and it lasts as long as your vehicle. Traditional paper filters need approximately every 20,000 km will be purchased new. In the long run you save with K&N has a significant amount. In most cases, a K&N filter already profitable after 50,000 to 60,000 km. In addition, you get more power and in some cases, you can reduce fuel consumption because of increases in paper filters dirty very quickly. Test trials were in different vehicles a performance increase up to 5%!

    Note well: These are not new HP, but HP, which previously lay hidden through unfavorable intake.

    As the K&N filter is working?

    At first glance falls on the K&N filter, the wide-mesh filter material that is responsible for the high air flow features. The filter material consists of four layers of oiled cotton fabric (how is it used for surgical dressings) and is embedded between two layers of plastic-coated aluminum mesh. The oil held in the tissues affected neither the tissue nor the mesh air flow. But one wonders why the dust particles do not march unhindered through the relatively simple big holes in the fabric? The secret of this unique filter system can be explained as dust and sand particles are carried with the air flow to the filter cloth. Before these parts (negatively charged) can pass through the filter, as they are pulled by a magnet from the air and strike at the oiled cotton fabric (positively charged) down. The clean air flows undisturbed through the filter, however.

    The cleaning process is constantly put on and more and more foreign particles are fixed on the fabric, the holes in the fabric to remain open. Which is the tissue-building layer of dirt is now a secondary filter, which also binds foreign particles. As before, however, cleaned air flows through the open passages. This extremely effective secondary filtering is the secret and the reason for the long life of these filters. She is in many cases up to 10 times the values ​​obtained by conventional filters. Mileage of 250,000 miles without maintenance is not uncommon.

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    Rex
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    The conventional filter systems


    Paper foam oilbath

    PAPER FILTER works here, a special filter paper with thousands of tiny holes to trap the dust particles by means of extremely small holes. Are determined by the particle Locherblockiert more and more and the air seeks the path of a "still goes through / no longer passes through" system.

    Advantages: The filter paper is reliable and of good filtering effect. Its advantage lies in the low cost per piece.

    Disadvantages: Humidity swells paper and reduces the number of flow holes usually permanent. Paper filters must be replaced at regular intervals. If they needed more time, take the air flow decreases rapidly, leading to:

    1) Loss of power, increased fuel consumption and high pollution levels due to increased emissions.

    2) It occurs when clogged filter that through the inevitably increased negative pressure in the intake pipes, dust particles from the air filter is torn into the engine and cause permanent damage.


    FOAM FILTER works as filter paper "goes through / is not" according to the system. They are oiled in some cases to create a sticky surface on the flypaper principle. Oiled filters lose heavily in the air flow.

    Benefits: The costs which usually correspond to the filter paper. Some types are also significantly more expensive. Lightweight and flexible manufacturing help the manufacturers of these filters.

    Disadvantages: airflow is less than the paper filter. In general, low filter efficiency, particularly for non-oiled filters. They are not fire-resistant, resulting in very competitive cars at an increased risk. Regular maintenance and oiling required. Other drawbacks with paper filters as in 1) and 2 listed).

    Hardly oilbath still in use and largely replaced by paper air filter or other air filtration systems.

    Benefits of K&N Filters

    They have the same life as the engine and allow substantial savings in filter purchase, inventory and maintenance time. The unique filter system can extend the life of the engines and provides optimal protection against hazardous dust, sand, etc., can this filter be used again and again without any loss of filter efficiency and air flow with little maintenance. The consistently high air flow, in some cases to reduce fuel consumption.

    Filter paper that will create in higher fuel consumption. K&N Filters are also waterproof (Oiled materials no humidity).

    Disadvantages: None, apart from the slightly higher cost of the investment.

    Why K&N is so environmentally friendly?

    To illustrate the environmental friendliness of K&N better, like K&N will give you an example. Assuming that the average lifespan of a car engine is 250,000 miles and we are currently via a fleet of 40,000,000 have in Germany, this means that 40 million paper filter every year must be disposed of. If this number is now multiplied by 12.5 (as many filters require a vehicle in his life) to get 500 million on paper filters. Altfilter contaminate 500 million in a span of 13 years of our environment. Now, if all cars were equipped with K&N filters, filter only once 40 million would be needed. You see, K&N helps the environment. K&N helps to avoid tons of unnecessary waste.

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