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The appearance of small road rollers makes engineering operations more convenient and more efficient. As we all know, the source of mechanical power is gasoline engines, but do you know how the gasoline engine of the Road Roller works? It doesn't matter if you don't know. Let me read this article with me. I believe you will find the answer.
How does a small roller gasoline engine operate?
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Generally, there are four pistons on the gasoline engine. According to its function, the four pistons can be divided into four parts: intake, compression, workmanship and exhaust. The operation of the four strokes will be described in detail below.
1. The intake stroke is driven by the piston crankshaft during the intake stroke activity, and runs from the top dead center to the bottom dead center. At this time, the exhaust valve is closed, and the intake valve is opened. The top-down operation causes the internal volume of the cylinder to gradually increase, and a degree of vacuum is formed between them, so that the mixed gas is drawn into the cylinder through the intake valve. When the piston reaches the bottom dead center, the entire cylinder is filled with the mixture.
2. The compression stroke piston moves from the bottom dead center to the upper dead center under the driving of the crankshaft (this point is opposite to the intake stroke). At this time, the exhaust valve is still closed, and the intake valve begins to gradually close. As the piston moves upward, the internal volume of the cylinder decreases. Since both the intake and exhaust valves are closed, the mixture entering the cylinder is compressed, and the temperature and pressure rise until the piston is compressed to the top dead center. The trip is over.
3. When the piston movement is close to the top dead center of the compression stroke, the spark plug ignites the mixture in the cylinder. At this time, the intake valve and the exhaust valve are both closed, and the temperature and pressure of the gas in the cylinder rise simultaneously. Thereby pushing the piston from the top dead center to the bottom dead center, and pushing the crankshaft to rotate the output mechanical energy through the connecting rod.
4. Exhaust stroke At the end of the power stroke, the gas in the cylinder pushes the piston to the bottom dead center, and the mixture in the cylinder also becomes exhaust gas due to combustion. At this time, the exhaust valve is opened, the intake valve is still closed, and the piston moves from the bottom dead center to the upper dead center under the driving of the crankshaft. The exhaust gas in the cylinder is discharged through the exhaust valve until the piston reaches the top dead center, and the exhaust stroke End.
When using a small roller, keep the machine clean, adjust and tighten the loose parts in time, and carefully exchange the oil. (This article is from Situ Rick)
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