Process and fuel for spark ignition engines

Details Process and fuel for spark ignition engines Process and fuel for spark ignition engines

C - Chemistry, Metallurgy

10

L

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

Patent

CA 2204408

A method is described for operating a spark ignition internal combustion engine utilizing an improved composition containing dimethyl ether and propane as fuel. An engine incorporating the invention produces a lesser amount of certain atmospheric pollutants, such as carbon monoxide and unburned hydrocarbons, as compared to the amount of pollutants produced when the engine is operated at identical conditions with propane as fuel. Also described is an improved fuel composition which exhibits a lower vapor pressure than, for example, propane and, therefore, is relatively easier to liquefy and transport.

Procédé permettant de faire fonctionner un moteur à combustion interne à allumage commandé à l'aide d'une composition améliorée contenant du diméthyléther et du propane en tant que carburant. Un moteur fonctionnant selon la présente invention produit une quantité plus faible de certains polluants atmosphériques, tels que le monoxyde de carbone et les hydrocarbures non brûlés, par comparaison à la quantité de polluants produite lorsque le moteur fonctionne dans des conditions identiques avec du propane en tant que carburant. La présente invention concerne également une composition de carburant améliorée qui présente une pression de vapeur plus faible que, par exemple, le propane et qui est donc relativement plus facile à liquéfier et à transporter.

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