Not only open but also repair engine maintenance minor knowledge

Category:Automobile engine repair - Date:2017-12-26

Since the engine is Car “ heart ” so, what are the main aspects of vehicle maintenance in normal times, the &ldquo of the car, and the heart &rdquo? Steam repair experts suggest that the following seven aspects should be done.

1. Use of the appropriate quality grade of lubricating oil. The gasoline engine should choose SD-SF grade gasoline engine oil according to the additional equipment and use conditions of the intake and exhaust system. The diesel engine should choose CB-CD grade diesel engine oil according to the mechanical load, and the standard is not less than the manufacturer's requirements.

2. Regular replacement of oil and filter cartridges. Any quality grade of oil in the process of use of oil will change, in order to avoid the occurrence of failure, should be combined with the use of regular oil change, and the oil is moderate (generally with the upper limit of the oil scale).

3. Keep the crankcase well ventilated. Most petrol engines now have PCV valves (crankcase forced ventilation), but the pollutants in the gas channeling will deposit around the PCV valve, which may cause the valve to be blocked. Therefore, the pollutants around the PCV valve must be regularly removed.

4. Clean the crankcase on a regular basis. During the operation of the engine, the high pressure uncombustible gas, acid, water, sulfur and nitrogen oxides in the combustion chamber enter the crankcase through the gap between the piston ring and the cylinder wall, and mixed with the metal powder produced by the wear and tear of the parts to form the oil sludge. Therefore, the crankcase should be cleaned regularly to keep the engine clean inside.

5. regular cleaning of fuel system and control of carbon deposition can keep the engine at its best.

6. rust and scaling are the most common problems in engine water tanks. Rust and scale will restrict the flow of coolant cooling system, reduce heat dissipation, cause engine overheating, and even cause engine damage. Therefore, we should regularly clean the water tank and remove the rust and scale.

7. maintenance of three filters: three filters refer to air filters, oil filters and gasoline filters. Three filters are used to filter the air, oil and gasoline on the automobile engine, which can protect the engine and improve the efficiency of the engine.

The danger of the engine being frozen directly to the oil tank

when driving in winter, many drivers' friends have encountered awkward situations that they cannot run because of diesel clogging or even condensation.

Professor Han Yingjian of the atmospheric Institute of the China Academy of Environmental Sciences pointed out that most of the car friends encountered the misunderstandings in the situation of diesel condensing, and the operation method was not standard. It was easy to damage the vehicle and the hidden danger. If blending gasoline in diesel oil, the following problems will arise.

First, it makes the vehicle difficult to start when it starts cold. It needs to start many times, the combustion of the next vehicle is seriously deteriorated, some fuel can not be fully burned, the fuel consumption is increased significantly, the horsepower is reduced, and the tail gas pollution increases sharply. In addition, the life of the engine will also be greatly affected. It is especially necessary to point out that the practice of direct baking of fuel tanks is time-consuming, laborious and dangerous. We should put an end to such wrong practices.

At the same time, consumers also generally have such a misunderstanding that No. 0 diesel can be used as long as the temperature is at 0 C. This is mainly due to the lack of understanding of the antifreeze performance of diesel. There are mainly two indexes to measure the antifreeze performance of diesel, namely cold filter point and condensation point. The freezing point is the highest temperature that the diesel loses its fluidity in the low temperature environment; the cold filter point is the highest temperature of the filter block when the diesel oil supply system is passed through the engine. According to the national standard, the cold filter point of No. 0 diesel is 4 C and its freezing point is 0 C. No matter what type of diesel oil is, as the temperature continues to decrease, it passes through the cold filter point first and then through the condensation point.

Experts suggest that when the temperature drops, the use of diesel anticoagulants is the best solution. When choosing diesel anticoagulants, we should choose the well-known brand with quality assurance, such as the imported brand house diesel oil anticoagulant performance is better.

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