Gasoline filter.
Gasoline filter for short steam filter. Gasoline filter is divided into carburetor type and electric injection type, the use of carburetor gasoline engine, gasoline filter is located on the import side of the oil pump, the working pressure is small, generally using nylon shell, the gasoline filter of the electric injection engine is located on the export side of the oil pump, the working pressure is higher, usually using metal shell. The filter element of the gasoline filter is mostly filter paper, and the main function of the gasoline filter using nylon cloth and polymer materials is to filter out impurities in the gasoline. If the gasoline filter is too dirty or clogged. Line filter paper Gasoline filter: gasoline filter in this type of gasoline filter, folded filter paper and plastic or metal filter at both ends of the connection, dirty oil into the outer wall of the filter through layers of filter paper filtered to the center, clean fuel flow out.
Main function
The main function of the gasoline filter is to filter out impurities in the gasoline. If the gasoline filter is too dirty or blocked, the main performance is: when the fuel door, the power is slow, or can not get up, the car is difficult to start, and sometimes it is necessary to spark 2-5 times to hit. Most engines are equipped with a one-time non-removable paper filter gasoline filter, the replacement cycle is generally 10,000 kilometers, if you add less gasoline impurities, 15000-20000 kilometers to replace one is not a problem. The filter has the arrow mark of the oil inlet and outlet, do not install the reverse when replacing.
effect
Compared to carburetor vehicles, EIs require cleaner fuel because even the smallest impurities can wear down the precision components in the EFI system. Therefore, the electric injector needs a special gasoline filter, which filters impurities in the fuel to avoid them entering the injection valve and cold start valve. The gasoline filter is an important part of the EFI system, only the original or beyond the quality of the gasoline filter can provide the clean fuel required by the EFI system, so as to optimize the engine performance, but also to provide the best protection for the engine.
Gasoline is as important to the car as food is to the human body. Without the supply of gasoline, the vehicle cannot move. In addition, in terms of gasoline products, if the oil is not very good and the impurities contained in the gasoline are more, it will cause damage to the fuel injection nozzle, fuel pump, fuel pipeline and other components in the engine, thus affecting the normal work of the fuel system. Therefore, at this time, the role of the gasoline filter is fully reflected. Simply put, the role of the gasoline filter is to filter out solid impurities such as iron oxide and dust contained in the gasoline or water, on the one hand, it can reduce the probability of the nozzle being blocked by impurities, and on the other hand, it can also ensure the quality of the gasoline that flows into the fuel system.
Cleaning principle
The function of the gasoline filter is to filter out the moisture and impurities in the gasoline. When the engine is working, the fuel oil enters the settling cup of the filter through the inlet pipe under the action of the gasoline pump. As the volume becomes larger at this time, the flow rate becomes smaller, the water and impurities that are heavier than the oil settle at the bottom of the cup, the light impurities flow with the fuel to the filter, and the clean fuel permeates the inside of the filter from the microhole of the filter, and then flows out through the tubing.
The filter element has two kinds of porous ceramic and paper. Paper filter element is made of resin-treated microporous filter paper, which has high filtration efficiency, low cost and easy replacement, so it is widely used.
Gasoline filter is divided into carburetor type and electric injection type, the use of carburetor gasoline engine, gasoline filter is located on the import side of the oil pump, the working pressure is small, generally using nylon shell, the gasoline filter of the electric injection engine is located on the export side of the oil pump, the working pressure is higher, usually using metal shell. The filter element of the gasoline filter is mostly filter paper, and nylon cloth and polymer materials are also used.
Technical characteristics
Inside the gasoline filter, the folded filter paper and the two ends of the plastic or metal filter are connected, and the dirty oil enters the center after being filtered by the outer wall of the filter through layers of filter paper, and the clean fuel flows out.
Unlike the line type gasoline filter, its filter paper is wrapped around the center tube. After the dirty oil enters, it is filtered out directly through the filter paper. The impurity particles are trapped in the filter paper groove. The performance of this gasoline filter is more excellent, and it is used in middle and high-end cars.
species
There are mainly two kinds: sea spiral filter paper gasoline filter and line filter paper gasoline filter.
Replacement period
Recommended replacement cycle: every 20,000 kilometers of the car, depending on the road conditions and oil products of the car.
Generally, 5000-8000 kilometers will need to replace the three filters, but also combined with the dust situation of the road you are driving
kilometres
5000 Change an air filter (you can also blow with an air gun) If you use general oil, you should replace the oil and oil filter. If you use good oil (0-40 standard), you can change it every 10,000 kilometers.
15000 Replace an air filter to check whether the brake oil and power oil antifreeze are deficient. If you use general oil, replace the oil and oil filter.
Replace an air filter Replace the gasoline filter If you use general oil, you should replace the oil and oil filter. Adjust the front and rear tires, and do four-wheel positioning and tire dynamic balance check to replace the brake pads (whenever the brake pads have been changed 3 times, the brake discs have to be replaced)
25000 Replace an air filter cleaning inlet and nozzle If you use general oil, you should replace the oil and oil filter.
Tire dynamic balance to replace brake oil, booster oil and transmission oil. Replace the spark plug (40000 replacement can also be, it is recommended to upgrade the spark plug, the original factory is very times) replace the antifreeze
35000 Change an air filter If you use general oil, you should replace the oil and oil filter.
Replace an air filter Replace the front and rear tires of the gasoline filter, and do four-wheel positioning and tire dynamic balance. If you use general oil, you should replace the oil and oil filter. Check and replace the brake pads (every time the brake pads have been changed 3 times, the brake disc must be replaced)
45000 Replace an air filter to check whether the liquid level is deficient. If you use general oil, replace the oil and oil filter. Clean inlet
55000 Change an air filter If you use general oil, you should replace the oil and oil filter. Check engine oil pan seal Check steering oil seal for leakage
Popularization of common sense
The engine has three kinds of air, oil and fuel filters, and the air conditioning filter in the car is generally called "four filters". They are responsible for the engine intake system, lubrication system, fuel system, air conditioning system intermediate filtration.
The oil filter is located in the engine lubrication system. Its role is to filter out harmful impurities in the oil from the oil pan, and supply the crankshaft, connecting rod, camshaft, supercharger, piston ring and other moving pairs with clean oil, play the role of lubrication, cooling, cleaning, so as to extend the life of these parts. Although the oil filter is isolated from the outside world, impurities in the surrounding environment are difficult to enter the engine, but there are still impurities in the oil.
First, impurities are divided into two categories
1) One is the metal particles worn down in the operation of the engine parts and the dust and sand from the refueling mouth when the oil is added.
2) The other is organic matter, which is black mud, which is a substance produced by chemical changes in the high temperature state of the oil during the operation of the engine. They deteriorate oil performance, weaken lubrication, and stick to moving parts, increasing resistance. The former type of metal particles will accelerate the engine crankshaft, camshaft and other types of bearings and the lower part of the cylinder and piston ring wear, the consequences are: the component gap increases, the oil demand increases, the oil pressure drops, and the gap between the cylinder liner and the piston ring is large, the oil on the top of the piston ring, resulting in burning oil, increasing the oil volume and forming carbon deposits. At the same time, the fuel drains into the oil pan, making the oil thin and the oil ineffective. These are extremely unfavorable to the performance of the machine, resulting in black smoke from the engine, a serious drop in power, and forcing an overhaul in advance. (Oil filter is the same as human kidney function).
Second, according to the specific driving environment, it is recommended to replace the oil filter once for 5000-10000 kilometers
The air filter is a device for purifying the air, which is composed of a shell and a filter element, and the filter element is arranged in the shell. There are various foreign bodies in the atmosphere, such as dust, sand, etc., which will accelerate the wear of the engine, thereby reducing the service life of the engine. Sometimes the tires can pick up flying rocks, which can cause serious damage to the engine once it enters the engine. The air filter prevents this.
In order to increase the intake volume, the air filter housing is generally larger, and many racing cars even design part of the frame as the air filter housing to increase its volume. When the engine is running, the intake air is intermittent, which causes the air vibration in the air filter housing, and if the air pressure fluctuation is too large, it sometimes affects the intake of the engine. In addition, this time will also increase the intake noise. In order to suppress the intake noise, the volume of the air filter housing can be increased, and some are also arranged in the partition to reduce the resonance.
The filter element of the air filter is divided into dry filter element and wet filter element. Dry filter material is filter paper or non-woven fabric. In order to increase the air passing area, the filter element is mostly processed with many small wrinkles. When the filter element is slightly polluted, it can be blown with compressed air, and when the filter element is seriously polluted, a new core should be replaced in time.
The wet filter element is made of spongy polyurethane material, which should be dripped with some oil and kneaded by hand to absorb foreign matter in the air. If the filter element is soiled, it can be cleaned with cleaning oil, and excessive soiling should also be replaced with a new filter element.
If the filter element is blocked seriously, the intake resistance will increase and the engine power will decrease. At the same time, due to the increase in air resistance, it will also increase the amount of gasoline sucked in, resulting in too strong mixing ratio, thus making the engine running state worse, increasing fuel consumption, and also easy to produce carbon accumulation. Usually should develop the habit of often checking the air filter element, according to the specific driving environment, it is recommended to replace the air filter once 10,000-15,000 kilometers.
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