Amsted Automotive's new multi-speed shifting technology improves EV and HEV efficiency

Currently, the automotive industry is at a turning point in powertrain research and development. Consumer demand is becoming increasingly important, prompting powertrain developers to shift their focus to improving efficiency and performance, similar to the development trend of internal combustion engine-powered vehicles. In order to meet the above needs, the next generation of electric vehicle (EV) and hybrid electric vehicle (HEV) powertrains are constantly being developed. According to foreign media reports, Amsted Automotive has launched Multi-Speed ​​Shift technology to improve energy efficiency and performance.

Multi-Speed ​​Shift technology (Image source: Amsted Automotive)

Amsted Automotive's new multi-speed shifting technology will be launched on a mass-produced electric vehicle in 2026. The multi-speed shifting technology uses an integrated one-way clutch (OWC) function to optimize the functionality, efficiency, range and cost of EV and HEV powertrains. Compared with traditional technologies, this technology can provide a flexible system solution, achieve smoother and faster shifting, and simplify shifting control.

The multi-speed shifting technology uses Amsted Automotive's mature dynamic controllable clutch (DCC) technology, which has been applied in an all-wheel drive mass-produced EV. Amsted Automotive's multi-speed shifting technology can be used for both parallel shaft powertrains and coaxial powertrains. One version also eliminates the friction clutch to reduce drag, improve efficiency and optimize sustainability indicators.

Compared to dog clutch systems, Amsted's one-way clutch has the following advantages:

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• Gear shifting without obstruction or interruption

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• No ratcheting during gear shifting

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• System control is simplified

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• Added additional functions such as parking lock

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• The calibration process is simpler and reduces engineering workload