May 2026 marked a historic moment for China’s automotive market: for the first time, not a single vehicle with a pure combustion engine appeared among the country’s top 10 best-selling passenger car ...

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.

Combustion efficiency in internal combustion engines refers to the proportion of chemical energy in the fuel that is converted into useful mechanical work. Attaining high combustion efficiency is ...

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 ...

For decades, the internal combustion engine has been the beating heart of the automotive world. It has powered everything from humble economy cars to roaring supercars, from rugged pickup trucks to ...

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 ...

Gas prices spike, emissions targets tighten, and suddenly the conversation about what actually powers your engine becomes a lot more interesting than it used to be. For decades, gasoline and diesel ...

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 ...

Learning how to build and understand a mini engine is an exciting journey for anyone interested in mechanics. A mini engine, despite its small size, works on the same principles as larger engines. By ...

Almost all gasoline engines, whether they're efficient-yet-less-refined four-cylinders, high-horsepower V6s, or growly and torque-rich V8s, use much the same process to create power. The "Otto cycle" ...