The range of Liebherr gas engines is similar to that of Liebherr diesel engines. The series based on the diesel engines of emission standard 3B is noted for being a closed system. The compressor inlet and turbine exit for the gas form the interfaces for the respective application. The charge air cooler, control flap and spark plugs are therefore already included in the standard equipment. The customer receives a compact complete system which is ready to install. Gas-specific components such as gas mixer, ignition system and controller are not integrated into the engine.
Many features of the successful Liebherr diesel engines were adopted for the gas engines. These include, for example, the steel pistons and the use of four valves per cylinder which increase air volume flow and minimise pressure losses. This allows high ignition pressures and, as a result, yields a high engine power density as well as a high efficiency of over 42%.
Application areas for the Liebherr gas engines are primarily small combined heat and power units, pump stations, gen sets and other stationary applications which are powered by natural gas, biogas, landfill gas or other gases.