How to make Weichai engine safe for summer
The hot summer is a troublesome time for car owners. In addition to long periods of open parking, the car was hot and difficult to handle. The engine is also a problem prone to problems in the summer.
Don't turn off the heat right away
1. Hot weather often appears in summer. The high temperature of about 40 degrees Celsius not only makes people feel unbearable, but also increases the chance of the car "boiling". For a car, "boiling" is when the temperature of the water tank in the car reaches boiling point. This can be seen from the indicated reading of the car's water temperature meter. According to the general requirements, the water temperature indicator of the car can not exceed 95℃.
2. In daily life, many owners often choose to immediately turn off the engine when they encounter the car "boiling", or even immediately open the hood to add water to the water tank. In fact, this practice will not only damage the engine, but also more likely to be scalded by the boiling water in the tank.
3, "When the engine is found boiling, do not immediately turn off the engine and keep it running at idle speed. The reason why the engine is boiling is that the water temperature in the water jacket is too high, that is, the temperature of the Piston and cylinder liner kit Weichai four matching and cylinder head，Engine turbocharger is too high. If the fire is extinguished at this time, the parts are in the expansion state and the gap is small. When the machine stops, some soft metals will fall off, and some will even cause the cylinder to get stuck.
Weichai engine maintenance needs to pay attention to what aspects
4, if the vehicle is found to be "boiling" in the process of driving, avoid cooling the engine cylinder block and cylinder head with cold water. This practice can cause the engine block to burst due to quenching, with irreversible consequences.
5, experts suggest: in order to prevent the vehicle in the summer "boiling", the owner should often check the cooling system, especially whether the thermostat is working normally. Check the water tank every day before getting off the bus. If water is scarce, it should be made up in time. When driving long distances or for a long time, always pay attention to the reading of the water temperature meter. If the water temperature is too high, you'd better stop and have a rest. When stuck in traffic, turn off the air conditioner.
Don't blindly remove the thermostat
1, in addition to the vehicle "boiling" should pay attention to proper treatment, summer for the maintenance of the vehicle engine, the owner must not blindly remove the thermostat.
2, some owners not only clean the water tank for their car, but also replace the coolant. They also "did a good job" of removing the thermostat, but this actually caused hidden damage to the engine. The thermostat is the switch that controls the circulation of coolant in the vehicle's cooling system. When opened, the coolant circulates 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 circulates in a small way, not through the external radiator, but only through the internal channel of the engine.
3, experts suggest: for hot summer, to check and maintain the performance of the thermostat, and adjust the tension of the water pump belt, so that the vehicle coolant in the large circulation system to be fully cooled, to cool the engine. For better results.
Lubricating oil and coolant are not ambiguous
Lubrication systems are also an important aspect of engine maintenance in summer. Especially senior cars, the engine temperature is generally higher. Summer, in the selection of engine lubricating oil, should choose high viscosity grade lubricating oil, and shorten the oil change period, the hub bearing with higher grease point, transmission and differential to summer heavy gear oil, brake fluid with higher boiling point brake fluid.
In addition, coolant selection is also an aspect of summer owners need to take care of. In summer, the probability of engine failure is significantly higher than that in weekdays, and more than half of them are caused by excessive engine operating temperature. In daily life, some owners, in order to be cheap, use tap water as coolant, but the boiling point of water is only 100℃, which can not meet the normal heat dissipation requirements of the engine in summer.
Expert advice: A good practice is to add waterless cooling fluid to your car. This kind of coolant does not contain water, avoids the gas barrier layer formation, fundamentally overcomes the water or water cooled cooling medium to the engine damage. In addition, the boiling point of up to 191°C quickly takes away excess heat generated by the engine and equalizes the engine temperature. According to experience, adding water-free cooling liquid can save about 10% fuel consumption, prolong engine life by more than 50%, and greatly reduce engine failure
