Aramco's new DHE engine offers 25 percent better efficiency than existing hybrid powertrains and can be used as a drop-in ...

Geely's new hybrid powertrain can achieve a 48.4 percent thermal efficiency.

Electric concept cars seem to steal the spotlight at auto shows these days, with their flashy futuristic looks and promises of amazing battery range. And many if not most cars will get some form of ...

Geely now holds a Guinness World Record for thermal efficiency, with its new i-HEV system rated at 48.4%, according to a ...

Getting from A to B by most means of transport is polluting; incomplete combustion of fuels releases soot and unburned fuel into the atmosphere, along with greenhouse gases such as carbon monoxide and ...

Kyle Hyatt (he/him/his) hails originally from the Pacific Northwest, but has long called Los Angeles home. He's had a lifelong obsession with cars and motorcycles (both old and new). One of the cool ...

The days of internal combustion engines are numbered. Unfortunately, the exact number is constantly shifting, with regulators moving the goalposts so often that manufacturers are left scrambling to ...

Every fleet strives to achieve two things when it comes to engines. The first is to maintain efficiency in order to reduce operating and service costs. The other is to ensure the longest possible ...

Recent advances in the analysis of aviation engine efficiency and sustainability have expanded the understanding of engine performance beyond traditional energy metrics. Researchers are increasingly ...

One famous limit of thermodynamics is that heat engines, like steam engines and internal combustion engines, must be less efficient than a Carnot heat engine (a heat engine cycle designed by French ...