The hot summer is a season of vehicle faults. It is often seen that vehicles are anchored on the roadside. The root cause lies in high temperature weather, which can cause the following accidents.
① The radiator is easy to \\\"open the pot\\\" to damage the cylinder pad. The high temperature of the pavement, the high temperature of the engine and the high temperature of the air -conditioning condenser will increase the temperature of the coolant. Ascend to the boiling point, causing the cylinder pad to damage.
② Oil is easy to deteriorate and burn. When the engine is running in an overheated environment, the viscosity of the oil is reduced, the antioxidant becomes poor, and the heat decomposition and oxidation are exacerbated. At the same time, the dust and moisture in the humid air in high temperature air enter the engine oil bottom shell pollution oil through the air intake system and crankshaft box ventilation, causing the oil to deteriorate. In addition, excessive temperatures will cause oil to enter the combustion room through the cylinder wall, valve oil seal and other parts to participate in the combustion, which can easily cause evaporation and burning.
③Stida wear. The engine is running at high temperature. The thermal expansion of the metal parts is large, and the normal coordination between the parts becomes smaller and the wear is intensified. At the same time, high -temperature operating engines are adhered to charcoal and glue on the piston top, burning room wall, valve and other parts, which will accelerate the damage of the parts. In addition, due to the heat of the engine, the oil becomes thinner, the oil pressure is reduced, and the lubricating oil film is not easy t
The hot summer is a season of vehicle faults. It is often seen that vehicles are anchored on the roadside. The root cause lies in high temperature weather, which can cause the following accidents.
① The radiator is easy to \\\"open the pot\\\" to damage the cylinder pad. The high temperature of the pavement, the high temperature of the engine and the high temperature of the air -conditioning condenser will increase the temperature of the coolant. Ascend to the boiling point, causing the cylinder pad to damage.
② Oil is easy to deteriorate and burn. When the engine is running in an overheated environment, the viscosity of the oil is reduced, the antioxidant becomes poor, and the heat decomposition and oxidation are exacerbated. At the same time, the dust and moisture in the humid air in high temperature air enter the engine oil bottom shell pollution oil through the air intake system and crankshaft box ventilation, causing the oil to deteriorate. In addition, excessive temperatures will cause oil to enter the combustion room through the cylinder wall, valve oil seal and other parts to participate in the combustion, which can easily cause evaporation and burning.
③Stida wear. The engine is running at high temperature. The thermal expansion of the metal parts is large, and the normal coordination between the parts becomes smaller and the wear is intensified. At the same time, high -temperature operating engines are adhered to charcoal and glue on the piston top, burning room wall, valve and other parts, which will accelerate the damage of the parts. In addition, due to the heat of the engine, the oil becomes thinner, the oil pressure is reduced, and the lubricating oil film is not easy to form. It also accelerates the wear of the machine.
④ The braking performance is worse. The cooling capacity of brake sheets and brake disc decreases, and frequently brakes. The braking force fell quickly. Especially under complex conditions such as steep slopes in mountainous areas, the number of times of Bo production is increased, and the temperature of the braking system will increase sharply, making the braking performance worse.
⑤ The fuel supply system is prone to gas resistance. After the oil supply system is heated, some fuels are stored in the oil pipe and oil pump in the gas state, which not only increases the resistance of fuel flow, but also causes the steam in the oil supply pipe to continue to be compressed and swollen with the pressure of the oil pump. The vacuum in the process causes insufficient oil supply or interruption of the engine, which will generate fuel to the qi resistance.
⑥ Mixed gas burning is abnormal. With the increase of the atmospheric temperature, the mixed air temperature of entering the cylinder has also increased, and the temperature of the engine will be higher, so that the lubricating oil in the cylinder will generate glue and charcoal under high temperature and hypoxia. There are hot spots on the top of the piston, the wall of the burning chamber, the top of the valve, and the spark plug. Causes the engine to ignite the hot spot, and spontaneously combust or blast.
The load of the air -conditioning pump is worse, and the refrigeration effect becomes worse. High temperature keeps the air -conditioning pump continuously running, the heat dissipation capacity of the air conditioner decreases, and the refrigeration effect will deteriorate.
⑧ Easy to explode. The high temperature on the pavement will increase the temperature inside the tire, and the tire willInternal gas pressure increases. Tire deformation frequency is accelerated, which makes rubber accelerate and prone to explosive accidents, especially tires with severe wear.
Vehicle summer maintenance focus:
① Do a good job of maintenance of the cooling system. Clean the heat sink and engine cooling pipes, completely remove the scale of the scale, and replace the standard coolant; clean the surface of the radiator; check the operation of the electronic fan, replace the electronic fan if necessary; check the wear of the pump.
② Cleaning the lubrication system, replace the engine oil that meets the operating conditions of the engine, and it is recommended to use synthetic motor oil with strong anti -high temperature and antioxidant capacity.
③ Cleaning the fuel supply system, including cleaning injector and oil pump filter, replaced the fuel filter, and check the operation of spark plugs, air flow meters and oxygen sensors.
④ Check and clear the carbon accumulation in the engine cylinder and inlet.
⑤ Check whether the air -conditioning refrigerant is leaked, and inadequate timely supplement; check the operation of the dryer and expansion valve, and replace it if necessary.
⑥ Keep the standard air pressure of the tire and perform a regular inspection, including checking the air pressure, nailing, abnormal wear, cracking, drum bags, etc., pay attention to clearing the gravel mixed in the tire pattern.
Check whether the brake assisting vacuum tube is leaked and replace the brake solution on time.
