Framegrab from a video of a long-duration hot fire of the Chi engine. Credit: Mega Engine HELSINKI — A new Chinese commercial rocket engine startup has conducted a successful long-duration hot fire ...

Converting the ignition of a fuel-air mixture into usable mechanical energy lies at the core of a dizzying number of internal combustion engines developed over the course of more than century.

Reports of the death of the internal combustion engine have been exaggerated. Electric vehicles were once poised to diminish the ubiquity of traditional engines, but automakers are booking huge losses ...

As the United States marks its 250th anniversary, WTOP presents “250 Years of America,” a multipart series examining the innovations, breakthroughs and pivotal moments that have shaped the nation ...

When comparing engine specs for nearly any combustion engine automobile, we see a number of variations available with differing outputs of horsepower and torque. We often have a choice of gasoline or ...

The rotary was the most radical rethink of the combustion engine in over a hundred years — and it paid the price for being different. Mazda introduced the innovative Wankel rotary engine in the 1967 ...

We're not going to get into the whole "who made the first car" argument today. But there's not much doubt that the overall history of self-propelled vehicles goes back well beyond the Mercedes Patent ...

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 ...

Illustration: Kelsea Petersen / The Athletic; Takashi Ayoma / Getty, Antonio Calanni / AP Formula 1’s car design revolution for 2026 is the biggest in a generation. Not only are the chassis designs ...

BRUSSELS—The European Union proposed watering down rules that would have effectively banned the sale of new combustion-engine cars in the bloc from 2035, after heavy pressure from the automotive ...

The European Union is set to propose softening emissions rules for new cars, scrapping an effective ban on combustion engines following months of pressure from the automotive industry. The proposal ...

A proposal to revise an E.U. law requiring carmakers to stop producing combustion engines by 2035 would offer some relief to automakers, but it sets back the region’s climate goals. By Patricia Cohen ...