Fuels compositions for direct injection gasoline engines

Details Fuels compositions for direct injection gasoline engines Fuels compositions for direct injection gasoline engines

2006-09-26

2006-09-26

Toomer, Cephia D. (Department: 1714)

Fuel and related compositions

Liquid fuels

Organic nitrogen compound containing

C044S418000, C044S419000, C044S329000, C044S333000, C044S334000, C044S335000, C044S336000, C044S338000, C044S340000, C044S341000, C044S342000, C044S343000, C044S344000, C044S432000

Reexamination Certificate

active

07112230

ABSTRACT:
Injector deposits in a direct injection gasoline engine are reduced by providing as fuel for the operation of said direct injection engine a fuel composition comprising a fuel-soluble compound having the formula (I):wherein R1and R2are independently C1-4alkyl, R3is a radical of the formula CmH2mwherein m is an integer of 2 to 6, R4and R5are each independently (i) hydrogen (ii) C1-4alkyl,wherein R6is selected from the group consisting of hydrogen and C1-4alkyls and R7is selected from the group consisting of hydrogen and C1-30alkyl, (iv)wherein R8is a saturated or unsaturated, linear, branched or cyclic, C7-23hydrocarbyl group or (v) wherein R4and R5together with the nitrogen atom to which they are bonded, form a cyclic ring in which further hetero atoms.

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