Ethanol fuel and its use as a diesel fuel
AssigneeBerol Nobel Stenungsund AB
InventorsGoran Carlsson, Martin Hellsten
Life of this patent
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Abstract
A fuel which is ethanol-based and which has the form of a solution includes from 62-94% by weight of ethanol; from 2-8% by weight of water; from 2-30% by weight of an ignition improving agent comprised of a water-soluble polyalkylene glycol compound containing 6-50 alkyleneoxy units with 2-4 carbon atoms and having a molecular weight of less than 2500. Such fuel is useful for fueling diesel engines and has excellent combustibility while emitting a low content of organic hydrocarbons. At the same time, the polyalkylene glycol ignition improving agent is odorless, non-toxic, stable in storage, and does not emit nitrogen oxides when combusted.
Claims17
A fuel which is ethanol-based and which has the form of a solution, the fuel comprising:
- from 62-94% by weight of ethanol;
- from 2-8% by weight of water;
- and
- from 2-30% by weight of an ignition improving agent consisting essentially of a water-soluble polyalkylene glycol compound containing 6-50 alkyleneoxy units with 2-4 carbon atoms and having a molecular weight of less than 2500, wherein the water-soluble polyalkylene glycol compound has a general formula
- R O(A).sub.n H,
- in which R is a hydrogen or a hydrocarbon group having 1-30 atoms, A is an alkyleneoxy group having 2-3 carbon atoms and at least 20% of all alkyleneoxy groups being ethyleneoxy groups, and n is an integer selected so that the polyalkylene glycol compound has a molecular weight ranging from 400 to 1000.
The process of fueling a diesel engine, comprising:
- providing a fuel having the form of a solution and containing:
- from 62-94% by weight of ethanol;
- from 2-8% by weight of water;
- and
- from 2-30% by weight of an ignition improving agent consisting essentially of a water-soluble polyalkylene glycol compound containing 6-50 alkyleneoxy units having 2-4 carbon atoms and having a molecular weight of less than 2500, wherein the water-soluble polyalkylene glycol compound a general formula
- RO(A).sub.n H,
- in which R is a hydrogen or a hydrocarbon group having 1-30 atoms, A is an alkyleneoxy group having 2-3 carbon atoms and at least 20% of all alkyleneoxy groups being ethyleneoxy groups, and n is an integer selected so that the polyalkylene glycol compound has a molecular weight ranging from 400 to 1000.
Dependencies are inferred from the claim text.