Baden (Switzerland), February 4, 2025 - LiGO injection systems are the answer to the increasing importance of climate-friendly fuels, such as hydrogen, methanol, ethanol and ammonia. With a broad portfolio, the product family offers solutions for single-fuel and dual-fuel applications. The existing engines also allow retrofitting to meet the requirements of various applications.
Efficient solutions for gaseous fuels
LiGO offers port fuel and direct injection systems with a standardised platform design. This enables efficiency and flexibility in upgrading engines for different combustion concepts, since fewer different parts are used, which simplifies production and maintenance. A highlight of the portfolio is the single-fuel solutions with 100% hydrogen for spark-ignited combustion concepts. The LPI hydrogen injector for port fuel injection and the LDI hydrogen injector for direct injection operate with different injection pressures and offer performance characteristics similar to those of diesel engines.
The LiGO family for hydrogen includes the LPI injector specially designed for port fuel injection at pressures from 2 to 15 bar. It made its debut in an innovative Liebherr wheel loader prototype, the L 566 H, which was presented for the first time in 2024. Another member of the family is the LDI injector, developed for direct injection with pressures of 5 to 30 bar. It is ideal for high-performance applications with a driving behaviour similar to diesel engines. Finally, the LiGO family counts the H2 rail and the LRM control block, which are used for the stabilisation of pressure and fuel quantity control. On top, they are equipped with comprehensive diagnostic and safety functions. The modular platform design allows for easy adaptation of components to different engine concepts and applications.
Liquid alternative fuels: flexibility in focus
For liquid alternative fuels such as ammonia, methanol and ethanol, LiGO injection systems offer solutions that retrofit existing diesel engines or enable new engine concepts. The port fuel injector for liquid fuels is based on the design of the hydrogen injector. With its high flow rate, it is particularly suitable for high-performance engines. The portfolio is complemented by an independent, electrically driven fuel pump currently designed for methanol.
One of the members of the LiGO family for ammonia, ethanol and methanol is the LPI injector for liquid alternative fuels, which was developed on the basis of the hydrogen injector platform for the pressure range from 5 to 30 bar. The family also includes an electrically driven fuel pump that allows packaging independent of engine design.
Integrated systems solutions and safety
Another key component of the LiGO injection systems product family is the LRM regulation module, which serves as a central unit for fuel quantity regulation and pressure control for hydrogen. Paired with the rail, designed for PFI or DI applications to stabilise and regulate pressure, a fully integrated system solution is available with all necessary safety features.
With LiGO, Liebherr sets a new standard for sustainable injection solutions. The combination of proven technology, an innovative platform strategy and flexible application options supports the industry on its journey toward more sustainable propulsion systems.
