H966

Liebherr H966 is a highly compact 13.5 liters 6-cylinder hydrogen engine. Still in development, this engine presents promising and encouraging results in terms of CO2 and nitrogen oxides (NOx) emissions. This 6-cylinder engine comes with port-fuel technology (PFI). PFI takes place at pressures below 20 bar directly into the intake system. The power density is 20 - 30% lower to that of a diesel engine due to air displacement effects. Port fuel injectors work in less demanding operating conditions which results in an easier design.

Configuration In-line engine
Number of cylinders 6
Displacement 13.5 l
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  • High robustness against dust, dirt, and vibrations

  • Close to “zero” Nox and CO2 emissions

  • Reduced effort for air filtration

  • Good dynamic behavior

  • Comparable interfaces (thermal and mechanical) with the vehicle to diesel engine

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Technical data
Configuration In-line engine
Number of cylinders 6
Bore 135 mm
Stroke 157 mm
Displacement 13.5 l

Options available for the engine:

  • LiDIA diagnostic tool

  • Engine Condition monitoring

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Bauma Innovation Award

Liebherr R 9XX H2 excavator powered by the H966 hydrogen combustion engine won the 2022 Bauma Innovation Award in the climate protection category.

Bauma Innovation Award

reThink & reFuel

Striving to reach zero emissions in the future, Liebherr works on alternative powertrain concepts. Learn more about it.

ReThink ReFuel

Connected components

Diagnose and monitor health, maintenance and performance of your engine with our dedicated digital products and services.

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