1. Diesel Fuel Parameters other than Sulphur
Anders Röj
ACEA
DG ENV Fuels Directive Review
type de visuel: titre de la conférence
couleur du texte: blanc
titre: optima bold / 60 pts
nom du conférencier: optima / 20 pts
entreprise: optima / 28 pts
interligne: 1:00 lignes
nombre de signes max. pour titre: 27 signes
composition: minuscules / majus. début des mots
alignement: à gauche (voir repères)
fond: à importer “fond avec logo”

2. Background and status
-Non-sulphur parameters in present Fuels Dir 98/70/EC are essentially based on EPEFE program in Auto-Oil I
-EPEFE ( ) covered Euro2 technology; other activities in Auto-Oil I took care of pre-Euro2 (”van Beckhoven report”)
-New information on fuel parameter influence on Euro 3/4/5 have been published in the last couple of years
-EU-funded project ”CLEAN” (EUCAR, IFP) has been running , goal: co-optimization fuels/engines

3. Heavy Duty Diesel: Some recent fuel studies (all test fuels <10 ppm sulphur)
Emissions level
Fuels compared
NOx (% diff)
PM (% diff)
Source
Euro4 Euro4 Euro4,Euro5 Euro4
Euro4 Euro3 Euro4 Euro5 Euro5 (ETC)
Class1/EN590 BTL/EN590
GTL/EN590 Class1/EU4ref GTL,BTL/EU4ref Class1/EN590 Class1/EN590 Class1/EN590 Class1/EN590
4 -10
(ave) - 9
20… (ave) - 18
28 same 7
MAN/Fortum MAN/Fortum
Shell Global Scania Scania Concawe Concawe Concawe Concawe

4. Emission reductions for a Euro 3 Diesel Passenger Car, NEDC cycle Source: CLEAN-project, Ford

5. NOx trade-off of a HD engine by varying EGR (1200 rpm, 25% load)
NOx trade-off of a HD engine by varying EGR (1200 rpm, 25% load). Source: CLEAN-project, Volvo.

6. Smoke (FSN) - NOx trade-off by varying the EGR (full load, 1200 rpm)
Smoke (FSN) - NOx trade-off by varying the EGR (full load, 1200 rpm). Source: CLEAN-project, Volvo.

7. ACEA messages – diesel fuels
- Euro3/4/5 technology shows that parameters besides sulphur can be even more important than for pre Euro3 (”EPEFE generation”) - NOx and PM improvements of up to 30% have been reported compared to EN590/EU4ref.fuel. Even larger potential when fuel/engine is co-optimized (CLEAN)
- Ideally, the fuel should be fully paraffinic (consequently high H/C ratio, no aromatics, high cetane) and sulphur-free (CLEAN-project conclusion)
-WWFC Category 4 defines the optimal quality for ”practical” fuels short/medium term. WWFC4 fuels are already available in some markets
-Directive 98/70/EC should be revised to become in line with WWFC Category 4
-Lubricity should be included in Directive 98/70/EC (not only techncal parameter, also environmental).

8. World Wide Fuel Charter Important diesel fuel parameters

9. World-Wide Fuel Charter