WO2006013578A1

WO2006013578A1 - Novel metrod of running ic engine using unconventional fuel

Info

Publication number: WO2006013578A1
Application number: PCT/IN2004/000230
Authority: WO
Inventors: Venkatakrishna Avadhani Lakshmi Keshavamurthy Hallimysore; Harsha; Lekshmikeshava Murthy Vidya Hallimysore
Original assignee: Shavamurthy Hallimysore Venkat; Harsha; Hallimysore Lekshmikeshava Mur
Priority date: 2004-08-02
Filing date: 2004-08-02
Publication date: 2006-02-09

Abstract

A novel method for running an IC engine with a different and an unconventional fuel system such as used engine oils, used edible and non-edible oils wherein when this fuel is subjected to thermal strain, the viscosity is reduced and the flash point is decreased. This property is made use to run IC engine. The heat generated from flue gas is made use in this process. The method employs simultaneous use of diesel oil and the fuel obtained by the result of this processes. Structural changes in the IC Engine system are made so as to implement the invented processes.

Description

NOVEL METHOD OF RUNNING IC ENGINE USING UNCONVENTIONAL FUEL

FIELD OF INVENTION

This invention relates to the method of running an 1C Engine with non- conventional fuel. This particularly increases not only the engine performance but also usage of abundantly available waste management of lubricating oil.

PRIOR ART DISCLOSURE:

The following description describes the prior art in the light of invention namely waste / fresh oil utilii ed to run IC Engines.

The phenome non of converting naturally occurring edible and non-edible oil into a bio- diesel is very much tedious and long process. Easterification and subsequent to get bio- diesel is costlier. The disposal of waste generated [sludge] is not been established. However this waste can be best used by converting into soluble alkali salts as a bio - fertilization. Waste oil either edible/non edible can be successfully used as a fuel in an IC Engine [CI Engines]. The oil is used to lubricate engine parts, is a viscous high boiling and high flash point material. Heating of any oil will expand volumetrically and reduces . viscosity. As the temperature increases, viscosity reduces and the property changes. This tends to a flammable liquid above ambient temperature. This property is made use to run a CI engine in place of diesel. If the viscosity is very much high, then this can be blended with a thinning agent, vehicle. Since the inlet oil is at higher temperature and the viscosity is more than diesel oil some modification is required in the engine system.

A method has been developed can be readily adopted to use, without easterification of thi; above oils, which reduces not only cost of production, increases efficiency.

Ther^'; are two stages while using viscous, waste lubricating oils/edible or non edible oils.

1. Purification - Removable of insoluble materials etc. Except the used engine oil [lube oil] all other used oils can be directly filtered through any means of filtration like Cartridge filtration , Centrifugal filtration, Vacuum filtration, Mixed sand bed filtration etc. The used engine oil is contaminated with carbonaceous materials, soluble and insoluble salts, metallic clusters, cotton waste etc can be purified by mixing with a polar solvent which has a characteristic of reducing all the above contaminants, the polar solvent can be distilled off after filtering the above mixture [waste oil with polar solvent] and can be reused. The process involves the mixing of used engine oil with polar solvent like ethyl acetate, methyl acetate in the ration of

1 : 3. A care is to be taken before mixing the polar solvent with waste oil. The waste or used oil should be a neutral to litmus before adding polar solvent. The residue is reclaimed oil which can be used directly to the engines. The residue after the filtration of the process is a mixture of carbonaceous material and soluble and insoluble matters. This can be used either as a carbon black material in paints, shoe polish or in road construction [tar mixing]

2. In this stage the oil coming from the first step are directly fed to the engine by heating. The heating of the oil is achieved through exhaust systems and or through radiator. This acts as an economizer.

The inγentors have made great effort to provide a system which meet the requirement of the industry and overcome the problem associated in the pric r art. To achieve the above object according to first aspect and feature of the present invention there is provided a system to improve, efficiency, .

According to second aspect and feature of the invention in addition to the first feature the invention comprises a system, which is unique, rugged efficient, economical.

At the outset of the description which follows it is to be understood that ensuring description only illustrate a particular form of this invention. However, such particular form is only an exemplary embodiment without intending to imply any limitation on the scope of this invention. Accordingly, the description is to be understood as an exemplary embodiment and reading of the invention is not intended to be taken restrictively.

The above and other objects features and disadvantages will be clear from the following description of preferred embodiment taken in conjunction with accompanying drawings. The foregoing description is outlined rather broadly preferred and alternative feat are of the present invention so that those skilled in the art may better understaid the detailed description of the invention that follows. Additional features of the invention will be described hereinafter that form the subject of claims of the invention. Those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiment as a basis for designing and modifying other structures for carrying out the same purposes of the present invention. Those skilled in the art should realize such equivalent conception do not depart from the spirit and scope of the invention in its broadest form.

SUMMARY OF INVENTION

A method of running IC Engine with non-conventional fuel wherein non- conventional fuel is subjected to thermal strain resulting in the reduction of viscosity and degrees in flash point and simultaneous use of diesel oil and the oil obtained from the invented process.

A method of running IC Engine with non-conventional fuel wherein When the oil is heated, viscosity reduces and flash point decreases. This hot oil is pumped to the CI engine to ignite. The heating of oil is an important factor in this stage. This can be achieved by passing the oil through a jacket connected to exhaust system. The temperature can also be achieved by passing oil through radiator. Since the in feeding oil is at higher temperature, a complete combustion can be achieved in the cylinder. A method of running IC Engine with non-conventional fuel wherein the process involves two types of engine oil -

a. Mixing of waste engine oil with a polar solvent like ethyl acetate in the ratio of 1 :4 & filtering to remove residue of carbonaceous materials. Ethyl acetate can be recovered by distillating the same under vacuum & can be reused again. The pure oil left behind will be the fuel for IC Engine. b. In this process waste engine oil is mixed with 2% sulphuric acid and stirred well. By adding four times normal hexane to the volume of the oil taken, the residue of carbonaceous material in the form of tar like material can be separated. This residue after neutralizing with any alkali & wash with water gives carbon material which can be used as tar in road making, paint industry as carbon black, in rubber industry as carbon black etc.. The oil mixed with normal hexane is in acidic state & is to be neutralized with mild alkali. The oil which contains normal hexane can be separated by distillation. The collected N- Hexane can be reused. Now the oil is of pure stage & can be either used as lubricant or fuel to IC Engines. c. In this stage , used engine oil is mixed with a thinning agent (Vehicle) to reduce the viscosity & filtered through a filter. The filter removes more or less all insoluble materials. Some fine particles (less than 1 micron) will pass through the filter. This oil is enough to use in IC Engine fuel.

IC Engire 'incorporating structural modification so as to be suitable for implemen ation of the method wherein the said modifications are as follows: a. Jacketing or coiling to the flue gas or exhaust system & absorbing the heat energy with inlet fuel. b. Jacketing or coiling to the radiator absorbing the heat energy with inlet fuel. c. Modification in the valves , diaphragms etc.. where ever the rubber is used change it with Teflon. d. Solenoid wall for change of fuel whenever it is required particularly after fuel passing through the jackets attaining above ambient temperature.

BRIEF DESCRIPTION OF DRAWING

The accompanying drawing is intended to provide further understanding of invention and is incorporated in and constitute a part of invention. The drawings illustrate an embodiment of invention and together with the description illustrate principle of invention. The drawing should not be taken as implying any necessary limitation on the essential scope of invention.

The drawing is given by way of non-limitative example to explain the nature of the invention.

For a more complete understanding of the instant invention reference is now made to the following description taken in conjunction with accompanying drawing. ; The various feature of novelty which characterize the invention are pointed out specifically in the claims which a part of description. For a better understanding of the invention, its operating advantage, specific objects obtained by its use, reference should be made to the drawings and descriptive matter is which there are illustrated and described preferred embodiments of invention.

Referring now to drawing, where like numerals designate identical or corresponding parts throughout the referred view.

Figure 1 of the drawing shows the incorporation of modification made in IC Engine to implement the invented processes.

The continual effort of reclamation of used engine oil without the usage of fuller earth and other additives. The main future of this invention is that the economical and eco-friendly method of re-refining of used engine oil and subsequent usage of the same in IC Engines, the process involves two types of engine oil - 1. Mixing of waste engine oil with a polar solvent like ethyl acetate in the ratio of 1 :4 and filtering to remove residue of carbonaceous materials. Ethyl acetate can be recovered by distillating the same under vacuum & can be reused again. The pure oil left behind will be the fuel for IC Engine.

2. In this process waste engine oil is mixed with 2% sulphuric acid and stirred well. By adding four times normal hexane to the volume of the oil taken, the residue of carbonaceous material in the form of tar like material can be separated. This residue after neutralizing with any alkali and wash with water gives carbon material which can be used as tar in road making, paint industry as carbon black, in rubber industry as carbon black etc.. The oil mixed with rormal hexane is in acidic state & is to be neutralized with mild alkali. The oil which contains normal hexane can be separated by distillation. The collected N-Hexane can be reused. Now the oil is of pure stage & can be e ither used as lubricant or fuel to IC Engines.

3. In this stage , used engine oil is mixed with a thinning agent (Vehicle) to reduce the viscosity and filtered through a filter. The filter removes more or less all insoluble materials. Some fine particles (less than 1 micron) will pass

I through the filter. This oil is enough to use in IC Engine fuel.

II STAGJΪ OF THE DISCLOUSRE -

In this invention, filtered oil from the above processes or from any other hydrocarbon fuels can be used in an IC Engine. When the oil is heated, viscosity reduces and flash point decreases. This hot oil is pumped to the CI engine to ignite. The heating of oil is an important factor in this stage. This can be achieved by passing the oil through a jacket connected to exhaust system. The temperature can also be achieved by passing oil through radiator. Since the in feeding oil is at higher temperature, a complete combustion can be achieved in the cylinder. Even any fine carbon materials carried by the oil will also get combustion. Since the combustion in the cylinder is a "Complete Combustion Process "evolution of pollutants is very much limited. This can be best illustrated as follows -;

Experiment 1. Take 100 ml of waste engine oil in a separating funnel and mix 400 ml ethyl acetate. Allow to stand the solution for 2 hrs. a clear reddish transparent liquid separates from a thick black tar like material . Discharge the residue from the bottom and collect the clear liquid and filter it using a filter paper. The clear filtrate is a mixture of polar solvent ethyl acetate and oil [Approx 480 ml]. Now distill this filtrate and collect distillate of approx 400 ml and residual oil is about 80 ml.

Experimem 2. Take 100 ml used engine oil in a separating funnel and add 3 ml concentrated sulphuric acid and shake well. Add 400 ml normal hexane. a clear slight yellowish liquid separates from the residue. Discard residue and neutralize with alkali and dry it. Collect the top clear liquid [about 475 ml]. Filter this liquid and distill

N-Hexane. Remove the residual oil [75 ml]. Experiment 3. Referring to figure- 1 of the drawing [Run the IC Engine with regular diesel [tank (1 )1 initially. Simultaneously allow the oil from Experiment 1 from tank (2). When the jacket is warmed due to the flue gas from the exhaust system , close valve(3) of diesel tank and open the valve(4) of waste oil to flow. As the temperature increases in the jacket , flow of waste oil becomes smooth & engine will attain a normal running condition. Run the engine for several hours. Observe NOx of flue gas. Disconnect the engine and check the carbon deposited in the cylinder and piston.

Experiment 4. Set up the equipment as in Experiment 3. Change the oil in the tank (2) the one from Experiment 2. and run as above. Observe the emissions and decomposition of carbon.

Experiment 5. Set up the equipment as in Experiment 3. change the oil in the tank (2) with filtered used engine oil and observe the emission and decomposition of carbon.

Experiment 6. Set up the equipment as in Experiment 3 . change the oil in the diesel tank (2) with filtered waste oil as it is. Observe the emissions and decomposition of carbon. Experiment 7. Set up the equipment as in Experiment 3 . change the oil in the diesel tank (2) with any edible / non- edible vegetable oil with used / fresh oil . Observe the emissions and decomposition of carbon.

Structural changes are made so as to suit implementation of the method. The modifications made with respect to IC Engine System are as follows:

1. Jacketing or coiling to the flue gas or exhaust system & absorbing the heat energy with inlet fuel.

2. Jacketing or coiling to the radiator absorbing the heat energy with inlet fuel.

3. Modification in the valves , diaphragms where ever the rubber is used change it with Teflon

4. Solenoid wall for change of fuel whenever it is required particularly after fuel passing through the jackets attaining above ambient temperature.

The invention has been explained in relation to specific embodiment. It is inferred that the foregoing description is only illustrative of the present invention and it is not intended that the invention be limited or restrictive thereto. Many other specific embodiments of the present invention will be apparent to one skilled in the art from the foregoing disclosure. All substitution, alterations and modification of the present invention which come within the scope of the following claims are to which tie present invention is readily susceptible without departing from the spirit

! ! of the invention.

The scope of the invention should therefore be determined not with reference to the above description but should be determined with reference to appended claims along with full scope of equivalents to which such claims are entitled.

Claims

1. A ^! method of running IC Engine with non-conventional fuel wherein non- conventional fuel being subjected to thermal strain resulting in the reduction of viscosity and decrease in flash point and simultaneous use of diesel oil and the oil obtained from the invented process to run the aforesaid engine.

2. A method of running IC Engine with non-conventional fuel as claimed in claim 1 wherein When the oil is heated, viscosity reduces and flash point decreases and that hot oil being pumped to the CI engine to ignite, the heating of oil being an important factor in this stage which is achieved by passing the oil through a jacket connected to exhaust system, the temperature being achieved by passing oil through radiator, since the in feeding oil being at higher temperature, a complete combustion takes places in the cylinder.

3. A method of running IC Engine with non-conventional fuel as claimed in claim 1 wherein the process involves two types of engine oil - a. Mixing of waste engine oil with a polar solvent like ethyl acetate in the ratio of 1 :4 and filtering to remove residue of carbonaceous materials, Ethyl acetate being recovered by distϊllating the same under vacuum and b. can be reused again, the pure oil left behind will be the fuel for 1C Engine. c. Waste engine oil is mixed with 2% sulphuric acid and stirred well, by adding four times normal hexane to the volume of the oil taken, the residue of carbonaceous material in the form of tar like material can be separated this residue after neutralizing with any alkali and wash with water gives carbon material which can be used as tar in road making, paint industry as carbon black, in rubber industry as carbon black the oil mixed with normal hexane is in acidic state and is to be neutralized with mild alkali, the said oil which contains normal hexane can be separated by distillation, collected N-Hexane can be reused and now the oil is of pure stage and can be either used as lubricant or fuel to IC Engines.

d. In this stage, used engine oil is mixed with a thinning agent (Vehicle) to reduce the viscosity and filtered through a filter, the filter removes more or less all insoluble materials, some fine particles (less than 1 micron) will pass through the filter and this oil is enough to use in IC Engine fuel.

4. IC Engine incorporating structural modification so as to facilitate adaptation and implementation of the method as claimed in claim 1 wherein the said modifications incorporated are as follows: a. jacketing or coiling to the flue gas or exhaust system and absorbing the heat energy with inlet fuel, b. jacketing or coiling to the radiator absorbing the heat energy with inlet fuel,

c. modification in the valves and diaphragms where ever the rubber is used change it with Teflon and

d. solenoid wall for change of fuel whenever it is required particularly after fuel passing through the jackets attaining above ambient temperature.