Diesel fuel composition

C - Chemistry – Metallurgy – 10 – L

Patent

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Details

C10L 1/18 (2006.01) C10L 1/02 (2006.01) C10L 1/08 (2006.01) C10L 10/02 (2006.01)

Patent

CA 2393840

This invention is a fuel composition for use in internal combustion engines comprising a major amount of a base fuel which contains no more than 10 % by weight of olefins and no more than 10 % by weight of esters, and greater than 5 % by weight based on the total composition of an oxygenate selected from the group consisting of a saturated, aliphatic monohydric alcohol having on an average from 8 to 20 carbon atoms, one or more ketones having on an average 5 to 25 carbons, and mixtures of the alcohol(s) and ketone(s). The amount of the oxygenate in the fuel composition is sufficient to provide the fuel with at least 0.5 % by weight of oxygen. The oxygenate significantly reduces particulate emissions from the exhausts of diesel powered engines.

Cette invention a trait à une composition de diesel utilisable dans des moteurs à combustion interne, laquelle composition comporte une quantité importante de carburant de base ne contenant pas plus de 10 %, en pourcentage pondéral, d'oléfines et pas plus de 10 %, en pourcentage pondéral, d'esters et contenant plus de 5 %, en pourcentage pondéral, de la totalité de la composition, d'un composé oxygéné choisi dans le groupe constitué par un alcool monohydrique aliphatique saturé porteur, en moyenne, de 8 à 20 atomes de carbone, par une ou plusieurs cétones ayant, en moyenne, entre 5 et 25 atomes de carbone, ainsi que par des mélanges d'alcool(s) et de cétone(s). La quantité du composé oxygéné entrant dans la composition de carburant est suffisante pour que la teneur en oxygène, en pourcentage pondéral, soit d'au moins 0,5 %. Ce composé oxygéné réduit de façon importante les émissions particulaires des gaz d'échappement de moteurs diesel.

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