Range extender with flywheel for commercial vehicles

Flywheel Range Extender Range Extender with Flywheel for Commercial Vehicles

2026-01-29 From Thomas Günnel | Translated by AI 1 min Reading Time

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Yuchai launches its flywheel system as a range extender on the market. This could reduce the fuel consumption of commercial vehicles by up to half.

Yuchai intends to use its flywheel system - on the right-hand side of the engine - primarily in commercial vehicles.(Image: Yuchai) — Yuchai intends to use its flywheel system - on the right-hand side of the engine - primarily in commercial vehicles.
(Image: Yuchai)

The Yuchai Group has announced the launch of its "Flywheel Range Extender System" - a flywheel-based system designed to increase the range of commercial vehicles in particular. This was reported by the news site Car News China. The system rigidly connects the flywheel to the engine's crankshaft. According to Yuchai, the integrated structure reduces the number of connecting components. In addition, the core system is maintenance-free over its service life.

Combined with diesel engines, the system achieves a maximum efficiency of 4.8 kilowatt hours per liter, according to the manufacturer. The maximum fuel saving is therefore up to 50 percent. The manufacturer intends to supply the Flywheel system in commercial vehicles and off-road equipment with an output of 15 kilowatts to 600 kilowatts, such as long-distance trucks, city buses, mining vehicles, port machinery and agricultural machinery.

About the Yuchai Group

The Yuchai Group is a state-owned manufacturer of engines and drive systems from Guangxi, China. The company operates a joint venture with Rolls-Royce Power Systems under the name MTU Yuchai Power. It also has long-standing supply relationships with car manufacturers such as Dongfeng and BAIC, primarily for commercial vehicles.

According to Car News China, Yuchai presented the Flywheel system at its own "Global Partner Conference 2026". In addition, a complete product range based on the technology. According to Yuchai, manufacturers such as FAW Jiefang, Dongfeng, XCMG, Sany and Caterpillar are already using the systems.

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