Weichai http:// The hot summer season is a troublesome season for car owners. In addition to long-term open-air parking, the car is hot and difficult to handle. In the summer, the engine is also a problem that is prone to problems. "Open the pot" and do not immediately turn off the fire 1 Hot weather often occurs in the summer, and the high temperature of about 40 degrees not only makes the people who feel out of the heat feel unbearable, but also increases the chance of the car "opening the pot". For the car, "opening the pot" means that the temperature of the water tank in the car reaches the boiling point. This can be seen from the indication reading of the water temperature meter of the car. According to the general requirements, the indication of the water temperature gauge of the car cannot exceed 95 ° C. When the water temperature exceeds 100 ° C, the car will be Never open again. Because the engine temperature is too high, the expansion of the components will reduce the clearance of the components, and on the other hand, the viscosity of the oil will decrease. In this case, the wear of the components is increased and the engine life is reduced. 2 In daily life, many car owners often choose to immediately turn off the fire when they encounter the "opening" of the car, and even open the hood immediately to add water to the water tank. In fact, this practice not only damages the engine, but is also more likely to be burnt by boiling hot water in the tank. 3 “After discovering that the vehicle is turned on, do not turn off the flame immediately, and keep it running at an idle speed.” The reason why the engine is opened is because the water temperature in the water jacket is too high, that is, the temperature of the cylinder liner, cylinder wall and cylinder head is too high. If the flame is turned off at this time, the parts are in an expanded state, and the clearance is small. When the machine is stopped, some soft metal will fall off, and some may even cause the cylinder to stick. 4 If you find that the vehicle is “opening” during driving, avoid cooling the engine block and cylinder head with cool water. This practice may cause the engine block to burst due to quenching, resulting in irreparable consequences. 5 Expert advice: In order to prevent the "opening" of the vehicle during the summer, the owner should always check the cooling system, especially if the thermostat is working properly. Check if the water tank is short of water before getting out of the car every day. If it is short of water, it should be filled up in time. Always pay attention to the reading of the water temperature gauge when driving long distances or driving for a long time. If the water temperature is too high, it is best to stop and rest. When the traffic jams, turn off the air conditioner. END Do not blindly remove the thermostat 1 In addition to encountering the vehicle "opening the pot" should pay attention to proper handling, in the summer for the maintenance of the vehicle engine, the owner must not blindly remove the thermostat. 2 Some car owners have not only cleaned the water tank for the car, but also replaced the coolant. They also 'goodly' dismantled the thermostat, but this actually caused a hidden injury to the engine. The thermostat is a switch that controls the circulation of the coolant in the vehicle cooling system. When it is opened, the coolant is circulated under the action of the water pump and flows through the external radiator to achieve a stronger cooling effect. When the thermostat is turned off, the coolant undergoes a small circulation, does not flow through the external radiator, but only circulates and cools in the internal water passage of the engine. 3 Expert advice: For the hot summer season, check and maintain the performance of the thermostat, and adjust the tension of the pump belt to allow the vehicle's coolant to be fully cooled in the large circulation system to cool the engine. For better results. END Lubricating oil and coolant are not vague Lubrication systems are also a critical aspect of summer engine maintenance. Especially for high-class cars, the engine temperature is generally higher. In the summer, in the choice of engine lubricants, should use high-viscosity grades of lubricants, and shorten the oil change cycle properly, the hub bearings use higher grease points, the transmission and differential switch to summer heavy gear oil, The brake fluid uses a brake fluid with a higher boiling point. In addition, the choice of coolant is also an aspect that needs to be taken care of by the owner of the summer. In summer, the probability of engine failure is significantly higher than that of weekdays, and more than half of them are caused by excessive engine operating temperatures. In daily life, some car owners are cheap, taking tap water as a coolant, but the boiling point of water is only 100 ° C, which can not meet the normal heat dissipation requirements of the engine in summer. 3 Expert advice: A good practice is to add a waterless coolant to the car. This type of coolant does not contain water, avoids the formation of a gas barrier layer, and fundamentally overcomes damage to the engine caused by water or water-cooled cooling media. In addition, the boiling point of up to 191 °C can quickly remove excess heat generated by the engine and balance the engine temperature. According to experience, adding anhydrous coolant can save fuel consumption by about 10% and extend engine life by more than 50%, greatly reducing engine failure. ”

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