Browse Publications Technical Papers 2012-36-0221
2012-10-02

New Generation of Off Highway 4-Cylinder Diesel Engine Fulfilling Stage IIIB / Tier4i Emission Standards 2012-36-0221

Liebherr Machines Bulle SA has chosen a technical solution for their 4 cylinder engines on the basis of cooled EGR and a closed DPF system including a fuel dosing unit to achieve Stage IIIB / Tier4i Emission Standards. Main portions of the development, especially the engine and after treatment calibration was performed together with Engineering Center Steyr.
The calibration was done under consideration of best fuel consumption, optimized combustion acoustics, satisfying vehicle dynamics as well as fulfillment of legislative regulations, engine and vehicle boundaries. The usage of complex software functionality, a sophisticated calibration process as well as a high end 2000bar injection system was mandatory.

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