Weichai Group launches the world first engine with highest brake thermal efficiency.

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 base engine’s thermal efficiency of 54.16%.

TÜV Sud, an authoritative international testing institution, awarded certificates to, representatives of Weichai’s high thermal efficiency engine development team.

Since the introduction of the diesel engine 125 years ago, the global research and development teams always regarded the improvement of thermal efficiency as the lifelong pursuit of the dream. In September 2020, Weichai released the world’s first diesel engine with base engine’s thermal efficiency of 50.23%. In January 2022, Weichai again increased the thermal efficiency of the diesel engine to 51.09%, continuing to lead the global internal combustion engine industry.

Base engine’s thermal efficiency refers to the proportion of diesel combustion energy converted into effective engine output work without relying on waste heat recovery device. The higher the thermal efficiency of the base engine, the better the economy of the engine. Compared with the existing mainstream products in the market (average 46% thermal efficiency diesel engine), the commercial application of 52.28% base engine’s thermal efficiency can reduce fuel consumption and carbon dioxide emissions by 12% respectively.

Natural gas engine plays an important role in carbon reduction of the internal combustion engine due to its inherent low carbon properties. In 2008, Weichai began to lay out the gas cylinder direct injection technology. In 2012, it successfully developed China’s first large-power in-cylinder high-pressure direct injection compressed combustion natural gas engine. Since 2018, the R&D team of Weichai has achieved two huge leaps in the base engine’s thermal efficiency of natural gas engines, exceeding 45% and 50% in 2020 and 2021 respectively, at the industry level of 42%. In November this year, the base engine’s thermal efficiency of a natural gas engine was successfully improved to 54.16%, meeting the China VI emission standards and exceeding the industry’s highest level of 47.6%.

The international community including Steven Hartong, CEO of Bosch Group, Chris Mason, CEO of International Federation of Automotive Engineers, Walter Downing, COO of Southwest Research Institute, Helmut Lister, CEO of AVL of Austria, Wei Wei, President of Chinese Engine Engineers Association of North America, China Mechanical Engineering Society, have sent congratulatory letters and videos