C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
C10M 107/02 (2006.01) C10L 1/02 (2006.01) C10L 10/02 (2006.01) C10M 107/10 (2006.01)
Patent
CA 2657242
The present invention relates to a combined lubricant and fuel composition package for operating a diesel engine, wherein the lubricant comprises a base oil comprising (i) a continuous series of iso-paraffins having n, n+1, n+2, n+3 and n+4 carbon atoms, and/or (ii) a continuous series of iso-paraffins having n, n+2 and n+4 carbon atoms and not containing n+1, and n+3; wherein n is between 15 and 40; and wherein the fuel composition comprises a paraffinic gas oil component having a paraffin content of greater than 80 wt % paraffins and a saturates content of greater than 98 wt %, and to its use in the reduction of nitrogen oxide in engine operation.
L'invention concerne un ensemble combiné constitué d'un lubrifiant et d'une composition de carburant pour faire fonctionner un moteur diesel. Selon l'invention, le lubrifiant comprend une huile de base comprenant (i) une série continue d'isoparaffines ayant n, n+1, n+2, n+3 et n+4 atomes de carbone et/ou (ii) une série continue d'isoparaffines ayant n, n+2 et n+4 atomes de carbone mais pas n+1 et n+3, n étant compris entre 15 et 40. La composition de carburant comprend un constituant gazole paraffinique ayant une teneur en paraffines supérieure à 80 % en poids et une teneur en composés saturés supérieure à 98 % en poids. L'invention concerne également l'utilisation de cet ensemble pour réduire l'oxyde d'azote lors du fonctionnement du moteur.
Selby Keith
Stephenson Trevor
Wakem Mark Philip
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Shell Internationale Research Maatschappij B.v.
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