GAR | GFV-23-07

Document Number GFV-23-07

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Document title	Dual-Fuel Vehicles – Approving the Modified Vehicle in Germany
Date	13 Dec 2012
Source(s)	TÜV Rheinland
Status
Rulemaking area(s)	UN R143 HD Dual Fuel Retrofit Systems UN R67 LPG Equipment UN R110 CNG/LNG System Components UN R49 Diesel/CNG/LNG Engine Emissions UN R115 LPG/CNG Retrofit Systems
Meeting(s)	GFV \| Session 23 \| 13 Dec 2012
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Excerpts from session reports related to this document
GFV \| Session 23 \| 13 Dec 2012			• Dr. Behrning indicated that the presentation is not representing an official national German view but is based on his and TUV’s experience and discussions with stakeholders, in order to provide a view of how Germany deals with D-F. • Procedure is to deduct the difference of the diesel-mode emission (each substance) from the one measured in the D-F mode. • There is no national approval system. Each vehicle has to be inspected (based on German 70 StVZO) • CNG-LPG D-F mode is possible according to ECE R67 or R.110. Emissions based on R.49, ESC, ELR & ETC • European reference fuels are used. • About 60% of German diesel engines are failing the initial emissions test so it is difficult to find one to convert in order to test on D-F. • This would be a transition before having something on the European level. Discussion • It is difficult to certify an engine if they don’t know what the baseline diesel engine emissions are. • Need a way to prove system performance and then move to harmonization. • Germany is more interested in certifying systems to Euro 6 and not any lesser levels. The certifications regarding D-F also are dealt with on a state-by-state basis. • Systems can’t be low cost, low performance and high benefit. • There also must be a way to determine how the D-F system itself performs.