The Liebherr components product segment will introduce the first prototype of hydrogen combustion engines, the H964 and H966, at this year’s Bauma
Each prototype will employ different hydrogen injection technologies such as direct injection (DI) and port fuel injection (PFI).
The first machine running with a 100% hydrogen-fuelled internal combustion engine (ICE) is the Liebherr R 9XX H2 crawler excavator.
In it, the zero-emission 6-cylinder engine H966 fulfils the specific requirements in terms of power and dynamics, the company says. The R 9XX H2 with the H966 engine in its port fuel injection configuration will be on display at booth 809/810 and 812/813.
Liebherr will also present its 4-cylinder engine H964 equipped with DI technology at booth 326 in hall A4. In this case, hydrogen is injected directly into the combustion chamber, whereas with the PFI solution it is blown into the air intake port.
“The DI offers increased potential in terms of combustion efficiency and power density, which makes hydrogen engines an attractive alternative to diesel engines when it comes to more demanding applications,” Liebherr says.
In the future, combustion engines will no longer be powered solely by fossil diesel. In order to achieve climate neutrality by 2050, fuels from sustainable energy sources will have to be used. Green hydrogen is one of them, since it is a promising carbon-free fuel, which does not cause any CO2 emissions whilst burning inside the ICE.
