The thermal efficiency of diesel engines has typically maxed out at around 46%, while gas engines only effectively use 30-36% of the energy available.

The Chinese-made Weichai WP13H diesel engine, unveiled in 2024, broke a record for diesel engine efficiency with 53.09% BTE.

So based on this we are looking at close to double real world fuel efficiency in non Prius engines? Base thermal efficiency from 20-25% to ~45%? That is serious stuff. Good job on that, F1 ...

By also adding heat energy recovery systems, Nissan managed to achieve a 50% thermal efficiency, the automaker said, without providing further detail. Such an engine could be used in one of Nissan ...

On September 16, 2020, Weichai Power introduced a diesel engine that broke the previous record with a body thermal efficiency of 50.23%, marking a significant milestone in this area.

The efficiency by which they do so is measured in terms of "thermal efficiency", and most gasoline combustion engines average around 20 percent thermal efficiency. Diesels are typically higher ...

CHICAGO, Nov. 21, 2022 /PRNewswire/ -- On November 20, 2022, Weichai released the world's first commercial diesel engine with base engine's thermal efficiency of 52.28% and natural gas engine with ...