The Otto Cycle is a thermodynamic cycle used in internal combustion engines. Compression allows for the air-fuel mixture to be compressed into a smaller volume, increasing its temperature and pressure. This results in a more efficient and powerful combustion process.
When the air-fuel mixture is compressed, its molecules are forced closer together, resulting in an increase in temperature. This is known as the adiabatic compression process, where no heat is exchanged with the surroundings.
The temperature of the air-fuel mixture increases during the compression stroke due to the decrease in volume. This is in accordance with the ideal gas law, where an increase in pressure and decrease in volume leads to an increase in temperature.
In theory, yes. However, in practical engines, there are limitations to the compression ratio that can be achieved without causing engine knocking or pre-ignition. In these cases, increasing the compression ratio may not necessarily lead to a higher temperature.
Yes, there is a limit known as the autoignition temperature. This is the temperature at which the air-fuel mixture will spontaneously ignite without the need for a spark. Beyond this temperature, the compression stroke can lead to engine knocking and damage.