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Daimler Truck tests fuel-cell truck with liquid hydrogen

Published On Jun 28, 2022By Trucksdekho Editorial Team

On its path towards a CO2-neutral future, Daimler Truck has clearly set its strategic course and is consistently pursuing a dual-track strategy in the electrification of its portfolio with both battery-electric and hydrogen-based drives. The ambition is to offer only new vehicles that are carbon-neutral in driving operation in its global core markets by 2039. 

Since last year, a Mercedes-Benz GenH2 Truck fuel-cell prototype has been undergoing intensive testing – both on the in-house test track and on public roads. Daimler Truck is now putting another prototype into operation to test the use of liquid hydrogen. 

A newly installed prototype filling station at the development and testing centre in Wörth enables the refuelling with liquid hydrogen. Recently, Daimler Truck celebrated the first successful liquid hydrogen (LH2) refuelling of the truck together with Air Liquide. During the refuelling process, cryogenic liquid hydrogen at minus 253 degrees Celsius is filled into two 40 kg tanks mounted on either side of the chassis. 

GenH2 Truck

Thanks to the particularly good insulation of the vehicle tanks, the hydrogen can be kept at temperature for a sufficiently long time without active cooling. Daimler Truck prefers liquid hydrogen in the development of hydrogen-based drives. In this aggregate state the energy carrier has a significantly higher energy density in relation to volume compared to gaseous hydrogen. As a result, more hydrogen can be carried, which significantly increases the range and enables comparable performance of the vehicle with that of a conventional diesel truck. The development objective of the series-ready GenH2 Truck is a range of up to 1,000 kilometres and more. This makes the truck suitable for flexible and demanding applications, especially in the important segment of heavy-duty long-haul transport. The start of series production for hydrogen-based trucks is planned for the second half of the decade.

Commitment to hydrogen

At the same time, Daimler Truck is working together with Linde on the development of a new process for handling liquid hydrogen (“subcooled” liquid hydrogen, “sLH2 technology”). Among other things, this innovative approach enables even higher storage density and easier refuelling compared to LH2. The companies plan for the first refuelling of a prototype vehicle at a pilot station in Germany in 2023.

Daimler Truck and its partners are planning for a high level of transparency and openness around the relevant interfaces of the jointly developed sLH2 technology. The goal is to collaborate with other companies and associations as possible to develop their own refuelling and vehicle technologies that apply the new liquid-hydrogen standard and thereby establish a global mass market for the new process.

On its path towards a CO2-neutral future Daimler Truck has clearly set its strategic course and is consistently pursuing a dual-track strategy in the electrification of its portfolio with both battery-electric and hydrogen-based drives. The ambition is to offer only new vehicles that are carbon-neutral in driving operation in its global core markets by 2039. 

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