Small, ultra-fast, primary and “afterburner” secondary combustion events promise to deliver brake thermal efficiency as high as 69 percent.

A skunkworks team of automakers, truck manufacturers, and motorcycle builders are working to save the internal combustion engine. The key? Hydrogen, they say.

UNDER this heading, two books on internal combustion engines, one by Prof. W. E. Dalby and the other by Mr. H. R. Ricardo, were recently reviewed in these columns (NATURE, NOV. 28, 1931 ...

with the introduction of the Mercedes-Benz 300TD in 1979 (the first passenger car with a turbodiesel engine), the world finally saw the genuine potential of turbochargers. The internal combustion ...

1 Mr. Ricardo takes as the title of his paper “High-speed Internal-combustion Engines,”and in it he compares the modern high-speed engine with the older slow-speed type, much to the ...

At the Low net-GHG Fuel and Engine Technologies Symposium at the University of Wisconsin in June, researchers noted that the life of familiar internal combustion engines may be extended.

Even now, as electrification seems poised to end the internal combustion engine’s long ... My most recent oddball-engine introduction, the Astron Aerospace Omega rotary,ran in early 2020.