Forbes contributors publish independent expert analyses and insights. I am a professor at Cal State LA and the technical director for the Hydrogen Research and Fueling Facility. We go for better ...

Researchers from the Southwest Research Institute (SwRI) have successfully developed an optimized spark-ignited hydrogen ...

When we here in the modern age think of an “engine,” we are usually thinking of a four-stroke, four-cylinder, gasoline-fed, internal-combustion engine with the valves on the top. But why must that be ...

As someone who has spent decades analyzing and predicting the trajectory of the automotive industry, I’ve often witnessed revolutionary moments, from the rise of hybrid technology to the advent of ...

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Astron aerospace has shown a partial prototype of a new rotary combustion engine it claims runs at an extraordinary 60% thermal efficiency, burning totally clean with zero NOx emissions and nothing ...

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 ...

Mazda has shifted towards the Skyactiv-Z inline-four engine, focusing on combustion perfection and future emissions requirements.

Automakers once bet big on bizarre ideas—from swirling airflows to variable compression—and the results were as fascinating as they were short-lived. Automotive engineers have invested countless ...

A 2026 F1 internal combustion engine is a 1.6-litre V6 turbo capped at 400kW, or 536hp, revving to 15,000rpm and burning 100% sustainable fuel.

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 ...