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What is the cut off ratio of a diesel engine?

The cut-off ratio of a diesel engine is the ratio of the volume of the cylinder at the end of the compression stroke to the volume of the cylinder at the beginning of the compression stroke. It is an important parameter in diesel engine design as it affects the engine's efficiency and power output.

The cut-off ratio is typically expressed as a percentage, and it can vary from around 15% to 85%. The higher the cut-off ratio, the more the air is compressed before combustion, which results in higher efficiency and power output. However, a higher cut-off ratio also increases the engine's compression ratio, which can lead to increased noise, vibration, and emissions.

The optimum cut-off ratio for a diesel engine depends on a number of factors, including the engine's speed, load, and fuel injection system. In general, the optimum cut-off ratio is between 25% and 35%.

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