Low-emissions diesel fuel emulsions

• US 20040098905A1
• Filed: 03/28/2003
• Published: 05/27/2004
• Est. Priority Date: 09/28/2000
• Status: Abandoned Application

• Current Assignee: Clean Diesel Technologies, Inc.
• Original Assignee: Clean Diesel Technologies, Inc.
• Inventors: Sprague, Barry N., Valentine, James M.
• Application Number:
  US10/401,367
• Publication Number:
  US 20040098905A1
• Time in Patent Office: Days
• US Class Current: 44/302
• CPC Class Codes: C10L 1/10 containing additives
• CPC Class Codes: C10L 1/125 water
• CPC Class Codes: C10L 1/1814 Chelates
• CPC Class Codes: C10L 1/1881 carboxylic group attached to an aliphatic carbon atom
• CPC Class Codes: C10L 1/1883 polycarboxylic acid
• CPC Class Codes: C10L 1/1886 naphthenic acid
• CPC Class Codes: C10L 1/1888 tall oil
• CPC Class Codes: C10L 1/189 having at least one carboxyl group bound to an aromatic carbon atom C10L1/1802, C10L1/1805, C10L1/1808, C10L1/1811, C10L1/1814, C10L1/1817, C10L1/1885, C10L1/1886, C10L1/1888 take precedence
• CPC Class Codes: C10L 1/2383 Polyamines or polyimines, or derivatives thereof (poly)amines and imines; derivatives thereof (substituted by a macromolecular group containing 30C) C10L1/221 takes precedence
• CPC Class Codes: C10L 1/301 derived from metals
• CPC Class Codes: C10L 1/305 organo-metallic compounds (containing a metal to carbon bond)
• CPC Class Codes: C10L 1/32 consisting of coal-oil suspensions or aqueous emulsions or oil emulsions
• CPC Class Codes: C10L 1/328 Oil emulsions containing water or any other hydrophilic phase
• CPC Class Codes: C10L 10/02 for reducing smoke development
• CPC Class Codes: C10L 10/08 for improving lubricity; for reducing wear
• CPC Class Codes: F01N 2430/04 by adding non-fuel substances to combustion air or fuel, e.g. additives
• CPC Class Codes: F01N 3/023 using means for regenerating the filters, e.g. by burning trapped particles by electrically controlling the supply of combustible mixture or its constituents only F02D41/0235

Abstract

A low-emissions diesel fuel comprises fungible aviation kerosene emulsified with from 1 to 30% water, and preferably contains 50-300 ppm detergent and 25-500 ppm lubricity additive. Improved results can be achieved by also employing a fuel-soluble platinum group metal compound, such as 0.1-2.0 ppm platinum COD and a fuel-soluble cerium compound, such as 5-20 ppm cerium oleate. A method of reducing the emissions of pollutants from a diesel engine, comprising running the engine on a fuel as defined. The method is improved by also employing another pollution-reducing technique selected from timing changes, exhaust gas recirculation, oxidation catalysts, lean NO_x catalysts and particulate filters for enhanced emissions control.

Claims

1. A low-emissions diesel fuel comprising an emulsion of from 1 to 30% of an aqueous phase and 70-99% of an oil phase comprised of aviation grade kerosene, detergent and lubricity additive.

2. A low-emissions diesel fuel according to claim 1 formulated as an emulsion of water-in-oil where and contains 50-300 ppm detergent, 25-500 ppm lubricity additive.

3. A low-emissions diesel fuel according to claim 1 formulated as an emulsion of water-in-oil where and contains aviation kerosene grade 55.

4. A low-emissions fuel according to claim 1, further comprising platinum and/or cerium fuel additives.

5. A low-emissions diesel fuel according to claim 4 comprising fuel-soluble platinum composition and fuel-soluble cerium composition.

7. A method of reducing the emissions of pollutants from a diesel engine, comprising running the engine on a fuel as defined in any of claims 1-7.

8. A method of reducing the emissions of pollutants from a diesel engine according to claim 7 wherein the method is improved by also employing another pollution-reducing technique selected from timing changes, exhaust gas recirculation, oxidation catalysts, lean NO, catalysts and particulate filters for enhanced emissions control.

6. A low-emissions diesel fuel formulated as an emulsion of water-ill-oil where the emulsion is made by inclusion of from 1 to 30% of an aqueous phase with 70-99% of an oil phase comprising fungible aviation kerosene grade 55, 50-300 ppm detergent, 150-250 ppm lubricity additive and 0.1-1.0 ppm platinum supplied as platinum COD and 2-15 ppm cerium supplied as cerium hydroxy oleate propionate complex.

9. A method of reducing the emissions of pollutants from a diesel engine, comprising running the engine on a fuel formulated as an emulsion of water-in-oil where the emulsion is made by inclusion of from 1 to 30% of an aqueous phase with 70-99% of an oil phase comprising fungible aviation kerosene grade 55, 50-300 ppm detergent, 150-250 ppm lubricity additive fuel-soluble platinum composition and fuel-soluble cerium composition, and also including also employing another pollution-reducing technique selected from timing changes, exhaust gas recirculation, oxidation catalysts, lean NO_x catalysts and particulate filters for enhanced emissions control.

10. A method of reducing the emissions of pollutants from a diesel engine according to claim 9 which contains 0.1-2.0 ppm platinum supplied as platinum COD and 2-15 ppm cerium supplied as cerium hydroxy oleate propionate complex