VERT - Clean Diesel Engines for Tunnel Construction

Paper #:
  • 970478

Published:
  • 1997-02-24
Citation:
Mayer, A., Czerwinski, J., Scheidegger, W., Kieser, D. et al., "VERT - Clean Diesel Engines for Tunnel Construction," SAE Technical Paper 970478, 1997, https://doi.org/10.4271/970478.
Pages:
15
Abstract:
1. ABSTRACTDiesel engines are irreplaceable in tunnel construction. The particulate emissions of present day engines are so high that the imission limits valid since 1991 cannot be attained by ventilation alone. This problem had to be solved preparatory to the large tunnel projects in Switzerland, Austria and Germany. Several retro-fitting measures were investigated both in the laboratory and in field tests, within the scope of the Project VERT. Oxidation catalytic converters, exhaust gas recirculation, and the usage of special fuels cannot be recommended. Particulate trap deployment, in different systems, was mostly successful. Particular attention was focused on the dependable filtration of finest particulates < 200 nm. The VERT proved that exhaust gas after-treatment with particulate traps is feasible, cost effective and controllable in the field. Pertinent directives are in discussion.
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