Automobile maintenance is a preventive work to inspect, clean, supplement, lubricate, adjust or replace some parts of the automobile within a specified period, which is also called automobile maintenance. Modern automobile maintenance mainly includes the maintenance scope of engine system (engine), gearbox system, air conditioning system, cooling system, fuel system and power steering system. The purpose of automobile maintenance is to keep the automobile clean and in normal technical condition, eliminate hidden dangers, prevent faults, slow down the deterioration process and prolong its service life.
Project 1, minor repairs
Content of minor maintenance: minor maintenance generally refers to routine maintenance items to ensure vehicle performance within the time or mileage specified by the manufacturer after the vehicle travels a certain distance. It mainly includes replacing oil and oil filter.
Interval of minor maintenance: The time of minor maintenance depends on the effective time or mileage of the oil and oil filter used. Different brands of mineral engine oil, semi-synthetic engine oil and whole synthetic engine oil have different validity periods, please refer to the manufacturer's recommendation. Oil filters are generally divided into conventional oil filters and long-acting oil filters. The conventional oil filter is replaced by oil, and the long-acting oil filter has a longer service life.
1, engine oil is the lubricating oil for engine operation. It can play the role of lubrication, cleaning, cooling, sealing and reducing engine wear. It is of great significance to reduce the wear of engine parts and prolong the service life.
2. The oil filter is a component used to filter oil. Engine oil contains a certain amount of colloid, impurities, moisture and additives; In the process of engine operation, metal chips, impurities in the inhaled air, oil oxides, etc. generated by the friction of various components. Are the targets of oil filter. If the oil directly enters the oil circuit without filtering, it will have an adverse impact on the performance and life of the engine.
Item 2, Major Maintenance
Content of major maintenance: major maintenance refers to the routine maintenance of replacing oil and oil filter, air filter and gasoline filter according to the time or mileage specified by the manufacturer.
Interval of major maintenance: major maintenance is based on the existence of minor maintenance. Generally, these two kinds of maintenance are carried out alternately. Different car brands have different intervals. Please refer to the manufacturer's suggestion for details.
In addition to changing the oil and oil filter during major maintenance, there are the following two items:
1. air filter: the engine will inhale a lot of air when working. If the air is unfiltered, the dust in it will accelerate the wear of piston group and cylinder. Larger particles entering between the piston and the cylinder will also cause serious "cylinder pulling" phenomenon. The function of the air filter element is to filter out the dust and particles in the air and ensure that enough clean air enters the cylinder.
2. Gasoline filter: The function of the gasoline filter element is to provide clean fuel for the engine and filter out moisture and impurities in gasoline. So as to optimize the performance of the engine and provide the best protection for the engine.