The first is the displacement, displacement is directly linked to the engine of the whole vehicle, the engine as the heart of the locomotive, is to treat the car must pay attention to the place. The displacement of the simple point is the lung capacity of the engine, that is to say, the larger the displacement of the engine power will be stronger, the higher the fuel consumption, resulting in a natural price is the more expensive.
The number of two strokes, the former motorcycle for two strokes, and now the motorcycle, no matter how big the displacement, most of the four strokes. In fact, the only difference between the two is the number of times a cycle is in the engine bay. It takes two steps for a two-stroke engine to complete from ignition to power-assisted completion, and four steps for a four-stroke engine to complete the entire process. I'm sure you may have a better understanding of this explanation. The advantages of a four-stroke equivalent to a two-stroke are low fuel consumption and low pollution. So four-stroke engines are more popular than two-stroke engines. At the same time, the number of valves in each cylinder is different. At present, there are generally two valves, three valves and four valves. The more valves, the better the intake and exhaust efficiency.
The third compression ratio, generally speaking, the higher the compression ratio, the greater the engine power, power or horsepower refers to the output capacity of the engine, the greater the power indicates that the engine is stronger.
In terms of torque, you can understand the strength of the engine, the greater the torque, the faster the motorcycle will start and accelerate. Of course, we do not need to pursue higher motion parameters, suitable for their own needs is the best.