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US 7,413,583 B2Granted
Emulsified fuels and engine oil synergy
AssigneeThe Lubrizol Corporation
InventorsDeborah A. Langer, Ewa A. Bardasz, William D. Abraham
Life of this patent
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Abstract
The invention relates to the use of an emulsified fuel in combination with an engine oil that shows a synergistic effect in reducing emissions such as particulate matter, hydrocarbons and/or nitrogen oxides (NO, NO2, N2O, collectively NOx) and/or reducing wear from an engine.
Claims19
A combination of a fuel and a lubricant for an internal combustion engine, said fuel and lubricant comprising:
- (a) an emulsified fuel comprising (1) water, (2) a fuel and (3) an emulsifier wherein the emulsifier comprises a C9-C11 alkoxy poly (ethoxy)8 alcohol;
- C12-C15 alkoxy poly (isopropoxy)22-26 alcohol;
- diglycerol monooleate;
- diglycerol monostearate;
- polyglycerol monooleate;
- polyethylene glycol soya bean oil ester;
- diglycerol dioleate;
- diglycerol distearate;
- polyglycerol dioleate;
- sorbitan monoisostearate;
- polyethoxy glycerol trioleate;
- or a mixture of two or more thereof;
- (b) at least one lubricant comprising an oil of lubricating viscosity and said lubricant is characterized as having an ash content below 1.0 wt % and as having at least one property selected from the group consisting of:
- (i) a phosphorous content of less than 0.05 wt %,
- (ii) a sulfur content of less than 0.5 wt %,
- (iii) a chlorine content of less than 100 ppm;
- resulting in the reduction of engine emissions selected from the group consisting of particulate matter, NOx, hydrocarbons, soot and combinations thereof.
14 more elements
An internal combustion engine comprising:
- (a) an emulsified fuel comprising (1) water, (2) a fuel and (3) an emulsifier wherein the emulsifier comprises a C9-C11 alkoxy poly (ethoxy)8 alcohol;
- C12-C15 alkoxy poly (isopropoxy)22-26 alcohol;
- diglycerol monooleate;
- diglycerol monostearate;
- polyglycerol monooleate;
- polyethylene glycol soya bean oil ester;
- diglycerol dioleate;
- diglycerol distearate;
- polyglycerol dioleate;
- sorbitan monoisostearate;
- polyethoxy glycerol trioleate;
- or a mixture of two or more thereof,
- (b) at least one lubricant comprising an oil of lubricating viscosity and said lubricant is characterized as having an ash content below 1.0 wt % and as having at least one property selected from the group consisting of:
- (ii) a phosphorous content of less than 0.05 wt %,
- (ii) a sulfur content of less than 0.5 wt %,
- (iii) a chlorine content of less than 100 ppm;
- resulting in the reduction of emissions selected from the group comprised in particulate matter, NOx, hydrocarbon, soot in combinations thereof.
14 more elements
A method for reducing emissions in an engine comprising:
- I. operating an engine using
- (a) an emulsified fuel comprising (1) water, (2) a fuel and (3) an emulsifier wherein the emulsifier comprises:
- a C9-C11 alkoxy poly (ethoxy)8 alcohol;
- C12-C15 alkoxy poly (isopropoxy)22-26 alcohol;
- diglycerol monooleate;
- diglycerol monostearate;
- polyglycerol monooleate;
- polyethylene glycol soya bean oil ester;
- diglycerol dioleate;
- diglycerol distearate;
- polyglycerol dioleate;
- sorbitan monoisostearate;
- polyethoxy glycerol trioleate;
- or a mixture of two or more thereof;
- (b) at least one lubricant comprising an oil of lubricating viscosity and said lubricant is characterized as having an ash content below 1.0 wt % and as having at least one property selected from the group consisting of:
- (i) a phosphorous content of less than 0.05 wt %,
- (ii) a sulfur content of less than 0.5 wt %,
- (iii) a chlorine content of less than 100 ppm;
- resulting in the reduction of engine emissions selected from the group consisting of particulate matter, NOx, hydrocarbons, soot and combinations thereof.
16 more elements
Dependencies are inferred from the claim text.