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Document Title | Information and update on the Netherlands dual-fuel test program | ||||||||
Reference Number | GFV-29-07 | ||||||||
Date |
18 Dec 2013
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Source(s) | TNO | ||||||||
Rulemaking Area(s) | UN R143 HD Dual Fuel Retrofit Systems | ||||||||
Meeting(s) | |||||||||
Downloads | |||||||||
UNECE server | .pdf format | ||||||||
Excerpts from session reports related to this document | |||||||||
GFV | Session 29 | 3-4 Dec 2013 |
24. This was a two year program, between 2011-2013. 25. Three types of testing regimes were used: an engine test stand; simulation of ESC/ETC on a vehicle/powertrain test stand; and road data with PEMS. Only tested type 2 B engines. 26. Fuel: Test fuel or market fuel, both of which are allowed. LNG is particularly difficult to determine fuel quality. 27. Emission sampling complicated by fluctuating fuel composition. 28. Test bench results: tested ten engine types on 100% diesel, LPG, CNG and LNG (ETC cycle). 29. Results: NOx emissions on diesel often too high; CNG HC emissions above the limit (including methane); LPG HC emissions within limits. Difference between diesel substitution (DEC) measured and claimed. 30. Findings and Issues: With D-F technology it is possible to meet Euro V emission levels in the type approval cycles; GHG benefit is negligible for both NG as well as LPG; so far no failures found while using dual-fuel; used vehicles sometimes have higher limits. The R67 and R110 tank mounting requirements for HD use needs attention. Mr. Rijnders indicated that the Dutch program is a voluntary program and retrofit system manufactures can get, after showing their performance, a license to retrofit some engine/vehicle types. The retrofitted vehicles will get an individual approval. Because it is voluntary there is no enforcement concerning periodic technical inspection yet. |
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