Liebherr Tier 4 Final engines use selective catalytic reduction (SCR) only, a technology that makes particulate filters unnecessary.
The new common-rail fuel injection systems include their own engine-management control units. These systems are standard on Liebherr engines between four and twelve cylinders, but can be adapted for use on other manufacturers' diesel engines.
The latest generation of 4- and 6-cylinder inline and V8 and V12 diesel engines comply with the Tier 4 Final/Stage IV emission standards using selective catalytic reduction (SCR).
- Catalytic converter, injectors, air and diesel exhaust fluid pumps achieve an approximately 98% reduction in NOx emissions
- Proprietary common-rail fuel injection systems include their own engine management control units
- 11 basic models available in the 174-hp to 1,005-hp (130 to 750 kW) power range