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In a standard OTTO Cycle, the bore and stroke of the cylinder are 181 cm and 142 cm, respectively. Calculate the displacement volume (the volume at the beginning of compression) in liters.

Answer :

Final answer:

To calculate volume at the beginning of compression in an Otto Cycle process, use the formula: Volume = π/4 * (bore/10)² * (stroke/10), with bore and stroke given in cm, which will give the volume in liters. However, this only accounts for engine displacement, and the actual volume would also include the combustion chamber volume.

Explanation:

The question is asking for the volume at the start of compression (“carattere”) in an Otto Cycle process given the cylinder bore (diameter) and stroke (distance the piston moves) in cm. The engine's displacement volume can be calculated using the formula: Volume = π/4 * bore² * stroke. However, the volume at the beginning of compression, typically represented as V1, is equal to the cylinder volume (engine displacement) plus the volume of the combustion chamber. As the combustion chamber volume is not given, let's assume you're seeking the displacement volume. In the Otto Cycle, the bore and stroke of a cylinder are important dimensions.

If we convert the units from cm³ to litres by dividing the result by 1000, the formula becomes: Volume = π/4 * (bore/10)² * (stroke/10). Enter 181 cm for the bore and 142 cm for the stroke to obtain the volume in liters. This calculation provides the total volume prior to the compression stroke in a standard Otto Cycle process.

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