Rivals of Mercedes and Red Bull insist they would be breaking the rules if they were to exploit a loophole in the new engine ...

Teams are continuing to press for clarification from the governing body over a response to rumours that two engine ...

Audi are set to enter F1 in 2026, but they could already be on the back foot after missing out on an engine regulation ...

F1 engine manufacturers are set to meet the FIA about the developing power unit controversy on the eve of the 2026 season.

The debate centres on the mandated reduction in compression ratio from 18:1 to 16:1 for the new power units, and ...

A gasoline piston engine that can dynamically change its compression ratio —that is, the amount by which the piston squeezes the fuel-air mixture in the cylinder—has long been a holy grail of engine ...

Apart from the very curious, not many people ask why diesel engines, compared to gasoline, run higher compression ratios. The argument is reasonably straightforward and starts with fuel ...

Strictly defined, compression ratio is the total volume above the piston at bottom dead center (BDC), divided by the total volume above the piston at top dead center (TDC). First, let's look at the ...

Forget variable length intakes and variable valve timing, Infiniti is going all the way and introducing variable cylinder compression ratios. The new VC-T turbo engine automatically adjusts between a ...

One of the key variables for an internal combustion engine is its compression ratio. This is the ratio of the maximum volume within the cylinder (when the piston is at bottom dead center) and the ...

While the fashion in high-tech automotive developments might lean towards hybrids and electric vehicles at the moment, there’s still plenty of scope to improve the good old internal combustion engine ...