What is the difference between Miller cycle and Atkinson cycle?

[DiAlex]

The differences between the Miller cycle and the Atkinson cycle are as follows: The Atkinson cycle achieves variation by altering the piston movement through various mechanical mechanisms, while the Miller cycle accomplishes this by delaying the closure of the intake valve. The Miller cycle does not involve complex linkage mechanisms, whereas the Atkinson cycle does. Relevant information is introduced below: The Atkinson cycle engine does not differ significantly from traditional internal combustion engines in terms of operation, as it still undergoes the four processes of intake, compression, power, and exhaust. However, what sets the Atkinson cycle engine apart from conventional internal combustion engines is that its compression process differs from the power process. The compression process is shorter than the power process, resulting in a lower compression ratio compared to the expansion ratio.