Which three filters are the three filters of automobiles? How to grasp the replacement time?

Replacing the car's three filters is one of the most common maintenance contents, and it is necessary to replace the three filters every time the car travels a certain distance. As the name suggests, the function of the three filters is to filter things that should not enter the engine outside, so as not to damage the engine. The so-called three filters and one oil in car maintenance refer to:

Machine filter, steam filter, air filter, engine lubricating oil, this is the item that should be replaced for routine maintenance.

The full name of the machine filter is called the oil filter, also known as the oil grid, the function is to filter out the return stroke, metal particles, precipitation caused by combustion and other impurities in the oil, the machine filter needs to be replaced regularly to ensure the purity and good working condition of the oil, it is recommended to replace it every time it is maintained.

The full name of the steam filter is called the gasoline filter, the position is at the outlet of the oil pump, the main function is to filter out the impurities in the gasoline, as we all know, our gasoline oil is not very good, if the direct combustion will lead to the failure of the oil system, so the role of the steam filter is very important. If the steam filter is blocked, it will cause power attenuation and difficulty in starting, so it also needs to be replaced regularly, and it is recommended to replace it every two minor maintenances.

The full name of the air filter is called the air filter, which is located in the box in the air intake, and its function is to clear the particles and impurities in the air, so as to ensure that the air entering the combustion chamber of the engine is pure enough and will not cause harm to the engine. The air filter** is very low, and it is recommended to replace it once per maintenance, or take it out regularly and clean it with high-pressure gas.

Because the filter device is generally a consumable, after a certain period of use, as more and more impurities are filtered out, the role of the filter gradually decreases or even fails, which will bring damage to the engine. So follow the instructions on the user manual to replace. For different models, the replacement time and kilometers will vary.

As little as 5,000 kilometers and as many as 15,000 kilometers, the user can decide whether to replace the three filters during maintenance according to the manual.

Now some repair manufacturers or 4S shops in order to make money, always "suggest" car owners to replace the three filters in advance, which will undoubtedly cause unnecessary waste, here it is recommended that car owners in accordance with the vehicle user manual recommended cycle to replace, no need to blindly follow the advice of the 4S shop.

The three filters on the car refer to: air filter, oil filter and gasoline filter, the air filter is generally cleaned once after 5,000 kilometers, and the vehicle is about 10,000 kilometers.

Air filters, gasoline filters and oil filters can be replaced in half a year or 7,000 kilometers.

Hello. Automobile three filters: (oil filter + air filter + cabin air filter).

Replacement cycle: half a year or one year.

The replacement of the three filters is relatively frequent, generally with the oil maintenance when the three filters need to be replaced, of which the oil filter must be replaced at each maintenance, the usual replacement cycle is 5000-10000 kilometers. The replacement cycle of air filter and cabin air filter is about 1 year or 20,000 kilometers, but this replacement cycle is not fixed, if you drive in a dusty and poor air quality environment for a long time, then the replacement cycle needs to be advanced as soon as possible.

The three filters of the car are:

1. Oil filter.

The oil filter is the most important filter in the car, also known as the "kidney of the engine". The function of engine oil is mainly to filter most of the impurities in the engine oil, ensure the cleanliness of the engine oil, and prolong the service life of the engine.

In an engine lubrication system, there are generally three types of filters. The first is the oil collector, which is installed before the oil pump to prevent large particles of impurities from entering the oil pump, and can also prevent the early wear of the oil pump, which is installed in the oil pan and generally does not need to be replaced.

The second is the oil coarse filter, which is used to filter out most of the impurities in the oil, which is generally connected in series between the oil pump and the main oil channel.

The third is the oil fine filter, which is used to remove the fine impurities in the oil, which is generally only equipped on large diesel engines, and is not available in cars, and most of them use centrifugal filtration. The oil filter is generally changed synchronously with the oil, and some people want to reduce maintenance costs, so they change the oil twice before changing the oil filter once, which is not allowed.

Because the dirt holding capacity of the oil filter element is limited, if it is not changed for a long time, the dirt will block the filter element, and the oil will flow through the bypass valve, which is equivalent to no filtration, and the engine will be damaged for a long time.

2. Fuel filter.

There are two types of fuel filters, one is a gasoline filter and the other is a diesel filter, and their function is the same, both of which filter out impurities and water contained in the fuel. The average family car is a gasoline car, so today we will only talk about the gasoline filter.

The gasoline filter is connected in series in the fuel supply pipeline of the fuel supply system of the gasoline engine, which is divided into two types, one is external, which is generally installed at the bottom of the car; One is built-in and is installed in the gas tank along with the gasoline pump. Generally, there is a filter screen before the gasoline pump, which is used to filter some larger particles to prevent the gasoline pump from being sucked in and protect the gasoline pump.

External petrol filters are usually replaced every 2 to 30,000 kilometers driven by the vehicle. Built-in fuel filters can be used for a longer period of time, typically replacing them at more than 60,000 km. The quality of gasoline will affect its service life, if you feel that the car accelerates weakly and the exhaust has a "sudden" sound, you must first suspect whether the gasoline filter is blocked.

3. Air filter.

The air filter is like a gas mask for the engine, isolating the dust, sand and other harmful substances suspended in the air, so that the engine can breathe cleaner. If air is sucked into the cylinder without being filtered, it will accelerate the wear of the piston group and cylinder. Larger particles enter between the piston and the cylinder, causing a severe "cylinder pull" phenomenon that can lead to early engine damage.

First of all, the three filters refer to the filtering effect of air, oil and gasoline on the automobile engine, so as to protect the engine and improve the working efficiency of the engine. The air filter is to ensure that the air entering the engine is clean, the gasoline filter is to ensure that the fuel is clean and prevent air resistance, and the oil filter is to filter the oil to ensure the normal operation of the engine. is the most important of the three filters.

During the use of internal combustion engines, mechanical impurities such as dust, metal shards, and carbon deposits will be constantly mixed into the oil.

The second is the oil filter, which is replaced every six months or 5000 kilometers in general models. Although the oil filter is inconspicuous, it is very useful, so pay attention to whether the oil filter needs to be replaced during minor maintenance. However, the specific model should be carried out in accordance with the car's maintenance manual.

In general, when the oil is changed, the filter is also replaced. The shape of the filter is a cylindrical object. Some models need to be replaced from the bottom with the roof, but the oil needs to be drained before replacement, so when I went to the 4S shop for maintenance, I saw that the master was changing the cylindrical object, that is, changing the filter.

In addition, it is recommended to replace the fuel filter every 30,000-40,000 km. A gasoline filter is called a vapor filter. The gasoline filter of the EFI engine is located on the outlet side of the fuel transfer pump, which has a high operating pressure and is usually in a metal housing.

The filter element of the gasoline filter is mostly made of filter paper, and some also use nylon cloth and polymer materials. The main function of a gasoline filter is to remove impurities from gasoline. The specific replacement cycle is subject to the actual working conditions of the vehicle and its own maintenance manual.

Finally, the air filter is generally replaced every 20,000 kilometers. The main accessories, such as masks worn by people, mainly filter air, dust, leaves, locust insects, particulate matter, etc. To replace the air filter, it is necessary to judge whether to replace it according to the amount of dusty climate.

The driving area of the car and observe the condition of the air filter. If it is a long-term dusty area or a place with dusty weather, it is best to walk 10,000 kilometers to check it and replace it in advance according to the condition of the filter element.

It refers to the engine oil filter, air filter, gasoline filter, air filter is generally replaced by 10,000 kilometers, 20,000 kilometers when the oil filter is replaced, and the oil filter is replaced at 40,000 kilometers.

The three filters refer to the gasoline filter, the air filter and the oil filter, which can purify the air and liquid inside the engine. Generally, it is changed once every 20,000 kilometers.

The three filters of automobiles refer to air filters, vapor oil filters and oil filters; I think that the three filters of the car need to be replaced once every six months, or once a year.

Replacing the oil filter is the most common car maintenance, and the three filters include: air filter, oil filter, and gasoline filter. Usually the conventional maintenance is divided into major maintenance and small maintenance, major maintenance refers to the replacement of oil filter, small maintenance refers to the replacement of oil filter.

The air filter is installed in the engine intake control device to reduce the wear of airborne particles on cylinders, pistons and other components. Generally, every time you change the oil, you can clean the air filter by the way. Because this air filter is relatively low, if it is not too dirty during maintenance, you can continue to use it if you blow it, and if you have the conditions, you can change it once a year.

The oil filter is installed in the lubrication system of the engine to ensure the cleanliness of the oil, avoid dust, metal wear debris, carbon deposits and other impurities, accelerate the wear of parts and cause oil blockage. The oil filter replacement cycle varies according to the driving situation of the vehicle and the quality of the oil, the oil quality is not high (the oil impurities are slightly more), it is recommended to change it every 5000 8000 kilometers; If the oil quality is relatively good, it is recommended to change it every 7500 to 12000 kilometers.

The replacement interval of a gasoline filter varies according to its own structure, performance, and use, and cannot be generalized. It is slightly complicated to say one by one, and in general, it is recommended to replace it once every 30,000 kilometers, and for areas with better oil quality, it can be extended to about 50,000 kilometers.

The three filters refer to: 1. Air filter.

2. Oil filter.

3. Fuel filter.

Three filters"It filters air, oil and gasoline on the automobile engine, thereby protecting the engine and improving the efficiency of the engine.

Three filters"Timely cleaning and maintenance can fully realize the performance of the engine, reduce the engine failure rate, and prolong the service life of the engine.

<> "Its function is to filter the air before it enters the cylinder, and remove the impurities, dust, sand particles and other foreign substances entrained in it. Typically, air filters are cleaned and serviced at intervals of 6000 8000 km.

Sometimes, however, the inside of the filter is covered with dust or oil and must be replaced immediately, even though the replacement time or mileage has not yet arrived. There are two types of air filters: dry and wet, and most cars use dry air filters.

It can remove all kinds of impurities in the oil and ensure the normal operation of the lubrication system. The oil filter can be changed at the same time as the oil is changed.

Note: When installing a new filter, do not overtighten the car key with a filter wrench to prevent damage. The oil filter is clogged and can be replaced, or the dirty filter can be washed and dried before reuse.

If the filter gasket is damaged and leaking, it needs to be replaced, or a cloth of comparable thickness can be cut out to shape a round pad instead.

The water and sediment of the filter should be discharged once a week, and the cleaning and replacement interval is generally 2000-3000km.

how to maintain the fuel filter; The role of the fuel filter is to filter out impurities in the fuel and make the fuel supplied to the engine for combustion purer. Generally, the gasoline filter is replaced every 20,000 km.

The three filters of automobiles refer to air filters, fuel filters, and oil filters, and under normal circumstances, the service life of air filters is 1-20,000 kilometers; The general service life of the fuel filter is also 1-20,000 kilometers; The service life of the oil filter is 5000-8000 km and up to 25000 km.

These are the service cycles of the three filters, but they are only used as a reference, and the specific decision should be made in combination with the actual situation. However, it is necessary to replace it regularly, and if it is not replaced for a long time, it will have a certain impact.

The role of three filters

1. Air filter: Filter the dust loss gas to enter the engine to remove impurities in the air, because impurities entering the cylinder will cause abnormal wear of the cylinder and shorten the life of the engine;

2. Fuel filter: filter the gasoline that is about to participate in the combustion, remove the impurities inside, let the gasoline better participate in the combustion, and increase the power.

3. Oil filter: installed in the oil channel, the oil is filtered through the filter element during the circulation process, and then flows to each part that needs to be lubricated, and the filtration can better lubricate the surface of the parts and reduce friction in order to remove the impurities in the oil.

In addition to the three filters, there is also a core, one core refers to the air conditioning filter, if the air conditioning filter is dirty, it will affect the air outlet of the air conditioner, it is not cool in summer or not warm in winter, and it may even breed bacteria, affecting the people in the car, and the air conditioning filter also needs to be replaced regularly.