Maintaining the engine is the most important task in maintaining the car.

Weichai http:// The engine is the heart of the car. Once the engine fails, the car often has to be in the armpit. The economy, power, and environmental protection of the entire car are all related to the operation of the engine. Therefore, maintaining the engine is the most important task of maintaining the car. The engine is the most complex part of the car, costing about 25% to 35% of the price of the entire car. In particular, modern cars use EFI engines, and the structure is more complicated. When we open the car hood, we often see only a variety of complicated pipelines and electrical circuits. Many engines are covered with soundproof and heat-insulating plastic covers. The parts inside are invisible. The old carburetor engine can be seen and touched, and can be properly adjusted and repaired with tools. The computer-controlled EFI engine uses various sensors to receive data information. After a complicated calculation, the preset computer chip issues an operation command to each actuator, and finally controls the operation of the engine. Therefore, if there is no specific testing instrument and theoretical basis, it is difficult to find out the fault. Automobile manufacturers generally object to the user's own disassembly and repair, emphasizing that the user should send a special repair station to overhaul. What users need to do is to use the operation correctly and maintain it in a timely manner. The so-called "seven-in-one, three-point repair" has improved maintenance to a strategic level. Good car skills and careful observation 1 Avoid low-lying water pavement After the rainstorm, the road often has water accumulation. At this time, do not drive hard to avoid the serious damage of the engine. Because once the engine draws in water, the combustion chamber is filled with water, and the high-speed rotating crankshaft linkage hardly rushes upward, while the water is an incompressible body, and the huge inertial force tends to damage the connecting rod. The high temperature cylinder body suddenly encounters cold water and is also likely to cause cylinder cracking. The electronic control part of the computer-controlled EFI engine will form a short circuit if it penetrates into the water, causing damage to components and even computers, and the loss will be heavy. Therefore, in case of heavy rain, I would like to advise you to wait for the temperament. It is best to drive the car to a higher place and wait for the water to recede. Don't be lucky enough to rush from the water. 2 Insufficient fuel should be added in time There is an electric oil pump in the fuel tank that is responsible for delivering fuel to the engine. The motor will heat up when it is working. When it sinks in the fuel, the heat will be cooled by the surrounding fuel and it will run for a long time. When the fuel in the tank is seriously insufficient, the oil pump is exposed to the air, and the temperature of the motor gradually rises, so that the motor is easily burned out. Therefore, when the fuel gauge pointer reaches the warning zone, fuel should be added in time. 3 The starter can not be used frequently in a short period of time Sometimes, the engine does not catch fire for some reason, and the driver usually starts frequently. In fact, the power consumption of the starter is very large, generally several hundred watts, which seriously consumes the battery's electrical energy reserves. If the engine is not on fire, there is no power to replenish it, and the battery is extremely vulnerable. Therefore, when the engine cannot be started after several ignitions, it is necessary to check the cause, eliminate the fault, and then start again. END Develop a proactive check of maintenance habits and choose the right lubricant 1 Learn more about car performance and promote it yourself Men like to repair or modify their cars in their spare time. Of course, I also engage in some small creations and inventions, and it is convenient to buy spare parts anyway. I assemble my own computer or design and create some electronic products, just like the popular DIY fashion. The boy stole the car when he was 13 or 4 years old. As his father repaired the car and reached the legal age, he drove around and was very familiar with the structure and performance of the car. 2 Check, add and replace oil. The oil is of special importance to the engine, because the current engine speed has reached six or seven thousand revolutions per minute in the car, and even tens of thousands of revolutions in the car. The linear speed of the piston movement is as high as several tens of meters, and it is carried out under high temperature and high pressure. If there is no suitable advanced oil as a lubricant, the engine will soon be damaged. Since the oil will partially evaporate at high temperatures, it is necessary to check the oil quantity frequently through the oil gauge. If it is insufficient, it should be added in time. However, it should be noted that the newly added oil must be the same model. Otherwise, the two oils with different chemical compositions will be mixed, which will cause a chemical reaction, which will deteriorate the performance of the oil. The choice of oil of any size depends on the local temperature conditions and will not be described here. When the engine is running at high speed, some metal chips and impurities will often fall off, and the oil will deteriorate after long-term use. Therefore, it is necessary to replace it in time. Various vehicles have clearly defined the oil change time, usually after the running-in period of 1000 to 1500 km, and after every 5,000 to 8,000 km. In the daily inspection, if the oil is found to be thick and black, the oil has deteriorated and needs to be replaced in time. In areas with large temperature differences, when the summer and winter are coming, it is necessary to replace the oil of the corresponding grade. And in southern China, because of the small temperature difference, you don't have to. With the development of science and technology, oil that can adapt to a large temperature range has been continuously developed, and this tedious work has been gradually omitted. In recent years, some companies have continuously introduced various oil additives, which can greatly improve the performance of the oil, thereby prolonging the service life of the engine and reducing the sewage discharge. This is very beneficial for the general engine, plus one or two hundred yuan, return However, it may be dozens, hundreds of times, and the benefits are significant, and it is worth promoting. However, it should also be noted that some medium and high-end cars, oil has been specially prepared additives in the factory, the instructions will clearly indicate that it is not allowed to add other additives, otherwise it will be wrong, but the effect is counterproductive. END Keeping the engine assembly clean Clean the filter element of the air filter regularly, and replace the three filter in the second guarantee of the car. For every thousand kilometers or so, it is best to remove the filter element of the air filter and use compressed air to blow dust and other dirt from the inside out. Some cars have a dust-integrated cup at the air inlet, and they should be checked frequently to dump the dust. The three filters are: three kinds of filters: fuel, oil and air, and the oil filter generally has two kinds of coarse filter and fine filter, and the car must be replaced when it is guaranteed. Different areas have different road conditions and the cleaning and replacement time varies. Check and replenish coolant If the liquid level of the coolant in the liquid storage tank is lower than the lowest scale line, it is necessary to add the same type of coolant, and if necessary, replace it with distilled water. Be careful, be sure to wait until the temperature drops and then open the cover, otherwise the hot water spray will easily burn people. Adjusting the valve clearance After driving for a period of time, the car sometimes hears a "beep, bang" sound in the engine. This is often because the gap between the valve and the valve lifter is large, and the gap is adjusted. However, modern new car engines have used hydraulic tappets, which automatically eliminate the gap, and the problem is naturally solved. Check and clean platinum contacts The platinum contacts on the distributor will have ablation after a period of use, which will increase the resistance, reduce the ignition energy of the spark plug, and reduce the output of the engine. This will lightly polish the oxide layer with fine sandpaper. . However, it should be noted that the area of ​​the contact should not be less than 80%. If it is exceeded, it must be replaced. Spark plugs should be checked frequently If one finds that the engine power has dropped, one of the possible reasons is that the spark plug has to be overhauled. First check the spark plug ceramic body for cracking, if it is broken, it should be replaced in time. Secondly, check whether the gap between the two electrodes of the spark plug is reasonable. Generally, it should be kept between 0.4 and 0.6 mm (the gap between different grades will often be different). It is best to use a thick gauge when checking the gap size, but you can also experience it. Use a visual inspection or remove the spark plug next to it for comparison. The electrode should be kept clean and the carbon and oxide layers on it removed. Check belt The tightness should conform to the regulations on the instructions. If there is cracking, delamination, etc., it should be replaced in time. 7 Ventilation valve to maintain ventilation Ventilation valves are available on engines, transmissions, and other assemblies to facilitate oil and gas leakage at high temperatures. Always remove dirt, dust and keep ventilation. When washing the car, pay attention to the cover on the valve, and do not wash the water in.

Valve Accessories

Valve Accessories,Underwater Limit Switch,Electro Pneumatic Positioner,Smart Regulation Positioner

ZHEJIANG KINKO FLUID EQUIPMENT CO.,LTD , https://www.kinkoflow.com