On April 20, 2024, the 2024 World Congress on Internal Combustion Engines grandly commenced in Tianjin, China. At the event, Weichai Power unveiled the world’s first diesel engine with an intrinsic thermal efficiency of 53.09%. 

This remarkable achievement was officially recognized by TÜV SÜD, an international authoritative testing organization, and the China Automotive Technology & Research Center, a professional testing body for Chinese internal combustion engines. Both organizations issued product testing reports and certificates to Weichai Power, confirming the company’s new world record in the key economic index of diesel engine thermal efficiency.

Since 2015, Weichai Power has assembled a high-thermal efficiency engine research team comprising hundreds of young Ph.D. holders and thousands of engineers. On September 16, 2020, Weichai Power marked a significant milestone by introducing a diesel engine with a record-breaking body thermal efficiency of 50.23%. The company continued its remarkable progress by further increasing the engine’s thermal efficiency to 51.09% on January 8, 2022. Most recently, on November 20, 2022, the company surpassed its previous achievements, reaching an impressive 52.28% thermal efficiency, which demonstrates Weichai Power’s pivotal role in leading the global internal combustion engine industry’s technological advancement.

Nowaday, Weichai has announced the world's first diesel engine with a thermal efficiency of 53.09%, an eloquent demonstration of Weichai's 4th consecutive successful application of new technologies, contributing to the realization "Double Carbon" goal.