How much compression to torque is in a 4 cylinder diesel engine?

In a typical four-cylinder diesel engine, the compression ratio usually ranges from 14:1 to 25:1, depending on the engine design and intended application. This high compression ratio is essential for igniting the fuel-air mixture without a spark plug. The increased compression leads to higher torque output, as it allows for greater thermal efficiency and more complete combustion of the fuel. As a result, diesel engines generally produce more torque than their gasoline counterparts at lower RPMs.