What is achieved by a combination of compression and fuel injection of a Diesel Engine?

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Multiple Choice

What is achieved by a combination of compression and fuel injection of a Diesel Engine?

In a diesel engine, the key outcome of compressing the air and then injecting fuel is ignition. The air is squeezed to a very high temperature, so when fuel is injected into that hot, highly compressed air, it ignites automatically without a spark. That ignition starts the combustion process, which rapidly raises pressure and drives the piston in the power stroke. Injection is simply the act of delivering fuel; ignition is the event that starts combustion. After ignition, combustion occurs and leads to the power stroke, but the essential result of the compression-plus-injection combo is ignition.

In a diesel engine, the key outcome of compressing the air and then injecting fuel is ignition. The air is squeezed to a very high temperature, so when fuel is injected into that hot, highly compressed air, it ignites automatically without a spark. That ignition starts the combustion process, which rapidly raises pressure and drives the piston in the power stroke. Injection is simply the act of delivering fuel; ignition is the event that starts combustion. After ignition, combustion occurs and leads to the power stroke, but the essential result of the compression-plus-injection combo is ignition.

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