P1racenews AI automatic summary:
Technical analyst Paolo Filisetti explains just how compression ratio works, but the hidden danger which lurks.
The issue of compression ratio, as measured by the FIA, remains unresolved, with single-seater technical director Nikolas Tombazis hopeful for a resolution before the season starts. Allegations suggest Mercedes HPP and Red Bull Powertrains may be running a higher compression ratio than permitted, leading to discontent among Audi, Ferrari, and Honda. This purported system would allow for a compression ratio of 18:1, potentially due to the use of heat-expanding metals while the car is in motion, resulting in increased engine power and thermal efficiency. A higher compression ratio compresses the air-fuel mixture more, causing a more forceful explosion during combustion and enhancing overall power output. However, excessive compression ratios can lead to detonation issues, making the current FIA limit of 16:1 considered safer than the alleged 18:1 option, highlighting the importance of fuel mixture sophistication in managing engine temperatures and performance. The impending shift to sustainable fuel mixes in F1 by 2026 further adds a layer of complexity, especially with the evolving power balance between internal combustion engines and battery power in the sport.
