Chlorinated Polyethylene(CPE) 1. CPE is a kind of saturated rubber, which has excellent heat-resistant oxygen aging, ozone aging, acid and alkali resistance, and chemical resistance.
2. CPE has general oil resistance. Among them, it has excellent resistance to ASTM No. 1 oil and ASTM No. 2 oil, which is equivalent to NBR; and it has excellent resistance to ASTM No. 3 oil, which is better than CR and is equivalent to CSM.
3. CPE contains chlorine element, has excellent flame retardant performance, and has the characteristics of burning and dripping. It can be combined with antimony flame retardant, chlorinated paraffin, and Al(OH)3 in an appropriate ratio to obtain a flame retardant material with excellent flame retardancy and low cost.
4. CPE is non-toxic, does not contain heavy metals and PAHs, and it fully meets environmental protection requirements.
5. CPE has high filling performance and can be manufactured to meet various performance requirements. The processing performance of CPE is good, and the Mooney viscosity is available in a variety of grades between 50-100.
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An engine is worn. One situation is that a cold start (ie, an engine shutdown of more than 6 hours) produces dry wear at the moment of start-up, which is the greatest damage to the engine. In another case, the engine generates high temperature at high speed, and the oil is relatively thin. At this time, the engine is in a semi-wear state, and this situation cannot be ignored.
Second, the phenomenon of oil loss. This situation is caused by a gap between the combustion chamber and the cylinder, causing the oil to enter the combustion chamber. The way to find that the engine has a phenomenon of losing oil is to first check whether the exhaust pipe emits blue smoke. When the hand reaches the exhaust pipe and probes it, it smells if the finger has organic oil. If there is taste, it proves that the organic oil in the engine is 窜. Into the combustion chamber.
The three oil seals are aging. When the oil seal ring ages, the oil is slowly leaked out. For the phenomenon of slightly burning the oil, adding a certain amount of repair agent when changing the oil can be solved. If the situation is serious, the engine needs to be disassembled.
To maintain the engine, it is necessary to change the oil regularly and change the three filters. In addition, it is necessary to observe and check frequently, and find out the faults in time to ensure that the engine is always in good technical operation:
1 Always adhere to the fastening parts. Diesel engine or gasoline engine is affected by vibration shock and uneven load during use. Bolts and nuts are easy to loosen, and adjustment bolts of various parts should be carefully checked to avoid damage to the machine due to loosening. The valve clearance, fuel supply advance angle, fuel injection pressure and ignition timing should be checked and adjusted in time to ensure that the engine is always in good technical condition. This will save fuel and extend the life of the engine.
2 Keep the oil clean, clean, clean and clean. The fuel is not pure, which can make the precision matching parts wear, and the gap is increased, causing oil leakage, dripping oil, power supply pressure to decrease, the gap to become large, and even causing serious troubles such as oil blockage and shaft burning; if the air contains A large amount of dust will accelerate the wear of the cylinder liner, piston and piston ring; if the cooling water is not pure, it will increase the scale after cooling, hinder the engine heat dissipation, the lubrication condition will be worse, the machine parts will be seriously worn; if the muscle surface is not clean, it will Allow the body to corrode and shorten the service life.
3 Ensure oil, water and air. If the supply of gasoline and air is not timely or interrupted, there will be problems such as difficulty in starting, poor combustion, power drop, and engine failure to operate. If the oil supply is insufficient or interrupted, the engine will be poorly lubricated, the parts will be worn seriously, and even burned. Tile phenomenon; if the cold water is insufficient, the machine temperature will be too high, the power will decrease, the wear will be intensified, and the service life will be reduced.
Method of extending engine life
The engine is the heart of the vehicle. How to keep the engine youthful is the key to vehicle maintenance. First of all, pay attention to running-in maintenance, which is the basis for extending the life of the engine. In addition, be careful of the three common diseases of the engine: