Motorcycles under normal maintenance conditions, piston rings and pistons are not so easy to wear, and wear and tear generally work in an abnormal state.
Commuter cars are generally less worn than long-term, mainly because some heavy-duty motorcycles (such as three-wheeled motorcycles) are prone to piston ring wear and sometimes wear out after a short change.
Piston rings are usually cast in grey cast iron. To improve wear resistance, the torus is mostly chrome-plated or copper-sprayed. Tests have shown that chrome plating can increase the wear resistance of the ring by 2-3 times and the maximum wear of the cylinder can be reduced by 20%-30%.
As mentioned earlier, wear and tear generally occur in an abnormal state. If this problem occurs repeatedly, the owner should review his driving habits and maintenance methods. The main form of piston ring wear is described below.
First, abrasive wear
Abrasive wear is mainly caused by dust, mechanical impurities, etc. entering the cylinder. These sharp impurities are attached to the cylinder wall, causing abrasive wear of the piston ring and piston and passing through the lubricating oil. The first gas ring has a larger ring pressure and the fastest wear.
It is known from the wear principle that the reason is that the impurities have entered, which indicates that the air filter is ineffective, and the air filter is not replaced or cleaned in time, resulting in small loss. In the maintenance practice, some car air filter can be blocked by dust. How can you guarantee that your car will serve you well?
Second, the hair wear
Pulling is a welding process, that is, the high part of the moving surface is high in temperature, the gap is small, and the two sides of the piston ring are temporarily melted, and the metal of the piston ring is temporarily melted, causing welding and pulling.
The pulling of the piston ring usually occurs when the first gas ring reaches the top dead center of the cylinder, because the temperature here is the highest, the lubrication is the worst, and the ring has a short pause with respect to the cylinder wall, so the hair is most likely to occur.
As soon as the napped hair is produced, it expands rapidly. When the napping continues to expand, the sealing action of the gas ring and the oil ring is destroyed, and the gas leakage and the consumption of lubricating oil increase.
The straightforward way to solve or alleviate this kind of wear and tear is to regularly replace the genuine oil with the correct label, and only to ensure sufficient lubrication can alleviate the abrasion of the brush. When I was repairing the car, some of the riders were complaining. How much time did the engine oil change? How could it wear out? I showed him the changed oil, and I lost my lubricity. I bought fake oil and it hurts people!
In addition, some car friends use the car habits, such as the high-speed bombing of the throttle after the cold car starts, this situation is also very easy to cause wear, because the engine oil has not fully lubricated the friction surface, this habit has to be changed!
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