What is the compression ratio of the Shadow Leopard?

[StDawson]

The compression ratio of the Shadow Leopard ranges from 4:1 to 10.5:1. Compression ratio and engine performance: When a gasoline engine is running, the intake is usually a mixture of gasoline and air. During the compression process, the piston moves upward, not only compressing the mixture to reduce its volume but also causing two phenomena: vortex and turbulence. When the gas in a sealed container is compressed, the pressure increases as the temperature rises. If the engine's compression ratio is higher, the cylinder pressure and temperature generated during compression will also be relatively higher, allowing the gasoline molecules in the mixture to combine more thoroughly with the air, resulting in finer fuel particles. Additionally, the effects of vortex, turbulence, and the high compression ratio contribute to better sealing, enabling the spark plug to ignite the mixture completely at the moment of ignition in the next stroke, releasing the maximum explosive energy and converting it into the engine's power output. Conversely, the longer the combustion time of the mixture, the more energy from combustion is converted into heat. According to the principle of energy conservation, the kinetic energy produced by the engine will decrease accordingly. Limitations of increasing the compression ratio: A higher compression ratio in an engine generally indicates better performance, but there are corresponding limitations. At the moment of fuel combustion, the cylinder walls and even nearby structures are affected by the intense combustion. As the compression ratio increases, more of the energy from combustion is converted into kinetic energy, increasing the pressure on the cylinder walls and raising the material requirements. Moreover, when the compression ratio reaches a certain level, the mixture can easily self-ignite under high pressure before the spark plug fires. At this point, the piston has not reached the ignition position, and the massive impact force generated by combustion opposes the piston's movement, causing severe engine vibration, known as knocking. Therefore, the compression ratio cannot be increased indefinitely. Instead, an appropriate compression ratio must be selected to balance all parameters and enhance engine performance.