You might have heard about high compression ratios, but what exactly are they, and what kind of effect do they have on an ...

A.Here's a pressure-volume diagram for a combustion engine. Although rough, it is an approximation of the so-called air-standard cycle. '' Point (a) is at atmospheric pressure, after which the air is ...

Increasing an engine’s compression ratio is a proven way of unlocking extra horsepower, but there’s a point of diminishing returns. The team at Garage 54, the Russian mechanics who built a V16 using ...

Nissan brought the first, and only, variable-compression engine to market. But its future doesn't look bright. Complexity in ...

Formula 1 bosses are moving towards a rule change that would close a loophole rivals believe Mercedes have exploited in the sport's new engine rules.

Formula One’s governing body, the FIA, has reached a compromise with power unit manufacturers to tighten how engine ...

A revised test at 130°C aims to end off-season speculation — but could shift the debate into 2027.

In December, it emerged that Mercedes had found a possible loophole in the rules that could lead to a performance advantage.

Technical manoeuvring to push regulatory boundaries for the slightest performance edge without actually breaking any rules is a familiar pattern in all forms of motorsport. Engineers treat the rule ...

Despite its critics and moves toward electrification, the internal combustion engine is not yet dead. Though its design for passenger vehicles may have begun to reach its apex with Mazda’s Skyactiv ...

A loophole, an e-vote and weeks of tension — but Coulthard says it was avoidable.