New Alternative Method for Emission Type-Approval of Internal-Combustion Engines in Heavy-Duty Hybrid Vehicles (Poster Presentation)

Authors

Dipl.-Ing. G. Silberholz, Ao.Univ.-Prof. Dr. S. Hausberger, Graz University of Technology; Dipl.-Ing. C. Six, Univ.-Prof. Dr. B. Geringer, Vienna University of Technology

Year

2015

Print Info

Fortschritt-Berichte VDI, Reihe 12, Nr. 783

Summary

Currently, the effects of powertrain hybridization on operation and emission behavior of the combustion engine are not considered in the emission type approval of engines used in heavyduty vehicles (HDV). Dependent on the hybrid system’s design, the engine operation can differ distinctly from the current WHTC type approval test cycle. These deviations can result in an emission behavior in the type approval test which is no longer representative of the real-world operation. As part of the Amendment 3 to Global Technical Regulation No. 4 two test procedures were developed, which allow testing of the entire hybrid-powertrain for internal combustion engines (ICE) used in heavy-duty hybrid vehicles (HDH). This requires the consideration of the entire hybrid-powertrain/vehicle combination like in a chassis dyno test and is achieved either by an emission measurement directly on a complete powertrain test bed (Powertrain-Method) or by deriving the engine operation from a complete vehicle simulation with a subsequent emission test on the engine test bed (HiLS-Method).