WO2009028858A1

WO2009028858A1 - Device for enhancing the output of the internal combustion engine under high concentration oxygen

Info

Publication number: WO2009028858A1
Application number: PCT/KR2008/004989
Authority: WO
Inventors: Woong-Jae Yim
Original assignee: Woong-Jae Yim
Priority date: 2007-08-27
Filing date: 2008-08-26
Publication date: 2009-03-05
Also published as: KR100843447B1

Abstract

Disclosed is a device for enhancing the output of an internal combustion engine by using high concentration oxygen with the amount of 21-100 % of concentration, which can reduce the consumption of fuel and in the case of engine that weight and volume do not matter such as large vehicle and big truck providing system that can use 100 % of pure oxygen as a combustion promoter. And in the case where weight and volume matter such as passenger vehicle, mixture of air and oxygen is provided and by providing an internal combustion engine, nearly complete combustion is maintained thereby reducing the consumption of fuel and suppress the generation of CO and nitro-oxide.

Description

DEVICE FOR ENHANCING THE OUTPUT OF THE INTERNAL COMBUSTION ENGINE UNDER HIGH CONCENTRATION OXYGEN

Technical Field

[1] The present invention relates to a device for enhancing the output of an internal combustion engine by using high concentration oxygen that can enhance the efficiency of combustion in the internal combustion engine through complete combustion by using oxygen as a combustion accelerant thereby reducing the consumption of fuel, diminishing exhaust gas and maximizing the output of the engine. Background Art

[2] It is well known from the past that the use of oxygen can facilitate the complete combustion in the internal combustion engine, but the use of oxygen has not been commercialized because there was no proper method of supplying oxygen to the engine.

[3] Also, the effect of reducing exhaust gas becomes higher as oxygen concentration gets higher. It is known that exhaust gas is reduced by 20% when using air with 27% of oxygen concentration compared to the air with 21% of oxygen concentration (545p, General Theory of Energy, Jaeho Cha et. al).

[4] While the fact that supplying high concentration oxygen is very efficient in the combustion engine is well acknowledged, existing internal combustion engine still uses air containing unnecessary gases such an nitrogen and others which account for 78% of the volume and that diminishes the efficiency of combustion and generating unnecessary pollution of the air.

[5] Therefore, the present invention has the objective of using pure oxygen a combustion accelerant for the internal combustion engine solving the problem of internal combustion engine arising from using air containing oxygen. Disclosure of Invention Technical Problem

[6] One objective of the present invention is to provide a device for enhancing the output of an internal combustion engine by using high concentration oxygen with the amount of 21-100% of concentration, which can reduce the consumption of fuel.

[7] Another objective of the present invention is to provide an internal combustion engine that can use 100% of pure oxygen as a combustion accelerant in the case of engine that weight and volume do not matter such as large ship and heavy truck. [8] Yet another objective of the present invention is to provide, in the case where weight and volume matters such as in passenger vehicle, an internal combustion engine using air containing oxygen to induct high concentration oxygen in the combustion engine.

Technical Solution [9] The present invention is to improve the consistent problems of conventional internal combustion engine in which combustion is carried out by suctioning natural air containing 21% of oxygen and to provide a completely new method to solve the problem. [10] In other words, instead of using natural air containing 21% of oxygen, air containing more than 21% of oxygen is used in combustion to solve the following technical problems. [11] 1. Emission of CO and HC can be reduced by nearly maintaining the state of complete combustion. [12] 2. CO emission can be suppressed by reducing the use of fuel which is the source of

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CO emission.

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[13] 3. Emission of nitro-oxide can be solved by the completely new method.

[14] 4. The use of fuel can be reduced in a large scale.

[15] 5. By reducing noise and vibration, convenient state of operation can be obtained.

[16] In the method for enhancing the output of an internal combustion engine by using high concentration oxygen according to the present invention wherein natural air containing 21% of oxygen and fuel supplied from the fuel supplying unit is mixed and combusted in the engine, air with 21-100% of oxygen is mixed with the fuel supplied from the fuel supplying unit and combusted in the internal combustion engine.

[17] Also, in the case of engine that weight and volume do not matter such as large ship and heavy truck, the device comprises an internal combustion engine 4 to which fuel is introduced via an fuel supplying controller 5, an oxygen tank 1 into which pure liquid oxygen is stored and exited through an evaporator, which is connected between the oxygen tank 1 and the internal combustion engine 4, 100% oxygen gas can be used for combustion promoter in the internal combustion engine.

[18] And in the case where weight and volume are limited to such as automobile, an internal combustion engine which is composed of a cylinder 10 into which fuel is introduced via an injector 11, and a inlet pipe 12 installed on one side of an suction manifolder of the cylinder for introducing air, and which combusts through the fuel mixed with the air, the device comprising: an oxygen sensor 16 and a regulator 3, which are installed to supply air to the suction manifolder 19 with constant pressure, an oxygen gas tank 15 connected between the oxygen sensor and regulator which supplies oxygen gas, and an oxygen tank which contains liquid oxygen being connected through pipe in order to supply oxygen gas to the oxygen gas tank 15.

Advantageous Effects

[19] Oxygen accounts for 21% of the air in terms of volume and 23.2% it terms of weight, and inevitable in combustion of the fuel. [20] In the present invention, high concentration oxygen is used as a helping agent to facilitate the combustion of the fuel in the internal combustion engine of vehicle, ship and heavy truck, and to reduce the consumption of the fuel. The effect of the invention is listed below.

[21] 1. Generation of CO and hydrocarbon can be reduced.

[22] CO is much generated when oxygen is not sufficient in combustion of carbon which can be combusted to generate CO in complete combustion when oxygen is sufficient. [23] In the process of combustion, much hydrocarbon is generated and this is a mainly caused by incomplete combustion which is combusted in internal or external engine such as gasoline engine, diesel engine and gas turbine. [24] In order to solve the problem of insufficient oxygen and incomplete combustion, the best method is to use high concentration oxygen as combustion aide. [25] 2. CO emission can be reduced.

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[26] Since the Kyoto Protocol of June of 1992, international efforts have been made to reduce CO emission, and EU decided to put the cap on the CO emission from vehicle from 2008. The objective of the present invention is to use the method of combustion of high concentration oxygen to cope with the policy to reduce the CO emission and the development of high performing internal combustion engine. For now, there is no method of reducing CO itself by after-combustion method, and the practical method is reducing CO by reducing the amount of fuel.

[27] CO is emitted most while complete combustion of fuel, and for the complete combustion, more than theoretical fuel rate of air is needed. During this time, nitrogen which is not needed for combustion is inducted. The object of the present invention is to obtain the state of nearly complete combustion by increasing the concentration of oxygen in the introduced gas by using high concentration oxygen gas instead the air required. IHbwever, while complete combustion can be obtained by using high concentration oxygen, very high temperature is generated when combustion is made through high concentration oxygen, which is not preferable to the engine. In this case, the combustion temperature can be decreased by appropriately reducing the supply of fuel, which causes decrease in the generation of source of CO and thus suppressing CO emission.

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[28] 3. Emission of nitro-oxide can be reduced.

[29] Though nitrogen is chemically stable element, a lot of nitrogen gas is emitted when reacted with oxygen in the air under high pressure and high temperature, especially when the reaction time becomes long. Conventional method of reducing the generation of nitro-oxide is to reduce the oxygen concentration in the suction unit and to maintain low temperature combustion to suppress the generation of nitro-oxide, but this method can cause incomplete combustion due to insufficient oxygen while reducing the generation of nitro-oxide. Generation of nitro-oxide can be reduced by using this method but CO and hydro-carbon is more generated and also the consumption of fuel is increased. But instead of reducing the combustion temperature by suppressing the supply of oxygen, the present invention supplies oxygen sufficiently in order to facilitate the combustion, and when there is need to reduce the excessively high temperature, supply of fuel is suppressed in order to reduce the temperature and decrease the generation of nitro-oxide.

[30] Also, the oxygen used in the present invention is a very low temperature gas evaporated from the liquid oxygen of -183⁰C. This extremely low temperature oxygen gas facilitate the combustion activities and also make the low temperature combustion possible suppressing the generation of nitro-oxide. Also, by combusting using high concentration oxygen, the combustion velocity is very fast and the time of interaction between oxygen and nitrogen is very short also suppressing the generation of nitro- oxide.

[31] 4. Soot and smoke gas can be reduced at start-up.

[32] In emission gas of an internal combustion gas, more than 80% of hydrocarbon gas is emitted in 2-3 minutes of start-up along with lots of CO gas. In other words, during start-up of an internal combustion engine, operation is made with thick fuel state and low combustion temperature making the generation of nitro-oxide less but generation of CO and hydrocarbon more.

[33] At the initial stage of operation, there are two methods of reducing CO and hydrocarbon. One is to adjust the supply of oxygen in order to facilitate the oxidation interaction. The other is to rapidly heat the catalyst to the temperature of interaction. In the conventional internal combustion engine, both combustion controlling method and catalyst pre-heating method are used reciprocally. In the present invention, however, by using the method of combustion through high concentration oxygen, oxidation process is carried out rapidly and the exhaust gas is suppressed at the start-up.

[34] 5. Combustion can be carried out using pure oxygen.

[35] (a) In the previous section, applying the method of combustion by using high concentration oxygen has been described. In the case of automobiles which is affected by the weight and volume of the system, the oxygen concentration is set to 30-35% when 50 liters of liquid with 50 liters of fuel is equipped for both gasoline and diesel cars. In the case of large buses or heavy vehicles, which is relatively free from the weight and volume of the system, more oxygen can be equipped and the engine can generate greater power than described above.

[36] (b) In the case of large ships or heavy trucks which are freer from the weight and volume of the system, 100% of pure oxygen can be used for the combustion. When pure oxygen is used for combustion, only CO and water vapor are generated as exhaust gas, and since these gases are easy to liquefy than oxygen and nitrogen, they can be recycled 100% preventing the generation of global warming gas. Also, there is no pumping loss when using the pure oxygen combustion and vibration and noise are minimized making the operation more convenient. Also, about 80% of fuel is reduced making the system more environmentally friendly and economically preferable combustion system.

[37] In the present invention, the following problems are addressed in order to supply high concentration oxygen.

[38] 1. In using oxygen in the internal combustion engine, it is efficient to use liquid oxygen since oxygen gas is difficult to store in sufficient amount. The volume of oxygen is extended about 800 times as oxygen is converted from liquid to gas.

[39] When an automobile is equipped with 50 liters of gasoline and 50 liters of liquid oxygen, the car can be operated maintaining 34.% of oxygen concentration (weight) in the air in the inductor in gasoline engine and 30.7% in diesel engine. (Calculated assuming that the specific weight of gasoline is 0.75, diesel 0.85 and liquid oxygen 1.13)

[40] 2. Also extremely low temperature storing vessel is required in order to store liquid oxygen in the vehicle. To store the liquid oxygen safely, it is necessary to maintain - 183⁰C, and for technical reason, the use of liquid oxygen has been limited to special use.

[41] IHbwever, the storing vessels that can store extremely low temperature oxygen are produced by 2 companies in the USA and one company in Korea. These vessels show stable safety and are now practically used in some areas, for example in the vehicle for transporting live fish and no problem in safety has been reported.

[42] 3. Supply and demand of liquid oxygen

[43] Even if liquid oxygen can play a considerable role in enhancing the efficiency of internal combustion engine and in reduction of energy consumption, the device of the present invention will be of no use if liquid oxygen is not sufficiently supplied. IHbwever, the current situation is satisfactory. The production capacity is up to a considerable level and if the demand for liquid oxygen rises, large manufacturing of the storing vessel is also possible.

[44] 4. Price of liquid oxygen

[45] When the price of liquid oxygen is more expensive than that of gasoline or LPG used in vehicles, the objective of the present invention, which is to provide a method of using oxygen in the internal combustion engine, becomes practically meaningless and is possible only in theory. IHbwever, the condition on this issue is favorable since the price of liquid oxygen is very cheap, which is about 750 won per lkg(l.13 liters) of liquid oxygen.

[46] The price becomes even lower when purchased in bulk, which is under 200 won per lkg purchased by tons.

[47] Therefore, if the use of oxygen in the internal combustion engine like vehicle is generalized, the price would be reduced to the price of bulk amount and when filling the at the filling station, consumers can fill the oxygen tank at the filling station using the liquid tank filler making the price cheaper.

[48] (The official price of the liquid oxygen in 2002 was 165won and 187won in 2006.)

[49] So, it can be said that the storing vessel of liquid oxygen has completely been developed and that there is no problem in supplying the oxygen. Therefore, since the price of liquid oxygen is less than 1/8 of gasoline and 1/4 of LPG which is cheap enough to be used as an aid to combustion in all the internal combustion engines and large ship and vehicle as well as passenger cars, reducing the amount of exhaust gas and energy consumed.

[50] The following is an example of reduction of energy, the amount of consumed fuel when gasoline or diesel is combusted in the internal combustion engine using natural air with 21% of oxygen concentration.

[51] Table 1 [Table 1] [Table ]

[52] The above is classification of the consumption of fuel in the operation of vehicles in three field of energy consumption, (p 42, Automobile and Environment, Yongil Jeong, Jaegeon Yu)

[53] In the above, regular output means the amount of fuel consumed for the operation of vehicle only and the cooling loss is the amount of fuel consumed for cooling of cooling water which is used to reduce the temperature of the overheated engine. And the emission loss means the rate of fuel consumption caused by exhaust gas which is inevitably generated by the combustion of fuel. As the cooling loss and increase of exhaust gas result in the decrease of regular output, and decrease of the cooling loss and exhaust gas result in the increase of regular output.

[54] In other words, as the cooling loss and emission loss decrease, regular output increases at the same rate. Therefore, the key part of increasing engine output and decreasing consumption of fuel is to decrease the emission loss and cooling loss.

[55] And exhaust gas is inevitably emitted in the combustion of fuel in the internal combustion engine. The amount of exhaust gas depends on the amount of oxygen used in the combustion, which is shown in the following table.

[56] Table 2

[Table 2] [Table ]

[57] The effect of oxygen concentration on the amount of emission gas and temperature of combustion [58] The above table shows the theoretical amount of air required for combusting 1 m³ of profane gas and the amount of exhaust gas and the temperature of flame according to the content of oxygen contained in the theoretical air.

[59] <Combustion Engineering p. 219, Gyugeun Song, Byoungcheol Choi>

[60] Table 3

[Table 3] [Table ]

[61] Table 4 [Table 4] [Table ]

[62] Combustion characteristics when using air and oxygen as an oxidizer [63] - Korean Institute of Energy Technology [64] - Sangmin Lee, Hansik Gam, tbgeun Kim, Gugyoung Ahn, Dongsun Rho [65] - Research on the characteristics of methane/oxygen flow for applying pure oxygen combustion

[66] The above shows the comparison of the combustion characteristics when natural air and pure oxygen are used as an oxidizer. When pure oxygen is used as an oxidizer, the following is shown compared to the case of using natural air.

[67] (a) The range of combustion is extended by more than 5 times. [68] (b) Combustion is faster by about 13 times. [69] (c) Combustion temperature is increased by about 38%. [70] (d) Exhaust gas is reduced by about 70%. [71] In the combustion using pure oxygen, pure oxygen instead of air is used as an oxidizer and unnecessary heating of nitrogen is prevented thereby increasing the efficiency of combustion and reducing the consumption of fuel. [72] The present invention, as described above, provides a method of combustion using 100% of pure oxygen induing high concentration oxygen, and has characteristics in that the introduced air in the internal combustion engine contains oxygen in the range of 21-100%.

[73] In other words, in the case where volume or weight of the system do not matter such as large ship or heavy vehicle, combustion method using 100% of pure oxygen can be adopted, but in the case of passenger vehicle affected by the volume or weight appropriate range of oxygen concentration can be chosen.

[74] In Table 1, the rate of fuel reduction is shown per oxygen concentration is shown step by step. The reduced amount of exhaust gas which becomes higher as oxygen content in air is higher is subtracted from the exhaust loss and this value is added to the net output.

[75] Table 5 [Table 5] [Table ]

[76] (Rate of fuel reduction to the oxygen concentration in the suction gas)— (gasoline engine)

[77] Table 6 [Table 6] [Table ]

[78] ((Rate of fuel reduction to the oxygen concentration in the suction gas)— (diesel engine - car) [79] In this way, as the concentration of oxygen in the inductor increases, the rate of consumption of fuel is increased. The internal combustion engine to which high concentration oxygen is supplied has the structure shown in Fig. 1. Brief Description of the Drawings

[80] Fig. 1 illustrates the internal combustion engine system of the present invention to which high concentration oxygen is provided. [81] Fig. 2 is another internal combustion engine system according to another example of the present invention

[82] [83] < Description of numerals in the drawings > [84] 1: Oxygen tank 2: evaporator

[85] 3: Regulator 4: Internal combustion engine

[86] 5: Fuel supply controller 6 Fuel tank

[87] 8, 16 Oxygen sensor IQ Cylinder

[88] 11: Injector 12: Suction pipe

[89] 13: Exhaust pipe 15: Oxygen gas tank

[90] 17: Oxygen supply pipe 19: Suction manif older

Best Mode for Carrying Out the Invention

[91] Fig. 1 illustrates the internal combustion engine system of the present invention to which high concentration oxygen is provided.

[92] Fuel supply controller 5 is connected to the rear end of the internal combustion engine 4 so that fuel (gasoline or others) in the fuel tank 6 can be supplied.

[93] Also, oxygen tank 1 is constructed so as to makes oxygen in liquid state into gas state through the evaporator 2 and to supply oxygen under constant pressure through the regulator 3 into the internal combustion engine 4.

[94] This internal combustion engine, however, can be operated through combusting with

100% of high concentration oxygen in the case of large ship or big boiler in which the weight or volume of the system does not matter.

[95] When using pure oxygen, only CO and water vapor are emitted as exhaust gas, and since it is relatively easy to liquefy and recycle CO compared to oxygen and nitrogen and the system provides combustion system that can be helpful in preventing global warming.

[96] When combusted by using pure oxygen, there is no pumping loss and vibration and noise are minimized maintaining the state of driving at the best level. Also, up to about 80% of fuel consumption can be reduced making the system more economic and environmentally friendly. Mode for the Invention

[97] Fig. 2 is another internal combustion engine system according to another example of the present invention

[98] Fuel is introduced to the cylinder 10 composing the internal combustion engine through the injector 11, mixed with the air introduced from one part through suction pipe 12, combusted and exhausted through the exhaust pipe 13, which is the same as the conventional internal combustion engine which uses the natural air.

[99] E.G.R. (exhaust-gas recirculation) valve which feedbacks from the exhaust pipe 13 in the direction of suction pipe 12 can be installed in order to reduce the exhaust gas.

[100] The reference numeral 8 which is not described herein is an oxygen sensor.

[101] In the present invention, an oxygen supplying means is equipped so that high concentration oxygen is introduced through the suction manifolder 19 on one part of the internal combustion engine, and the oxygen supplying means is constructed in such a way that the oxygen tank 1 is introduced to the regulator 3 through the evaporator 2 in one part and to the oxygen gas tank 15 in other part, so that oxygen is supplied from the oxygen gas tank 15 to the suction manifolder 19 through oxygen sensor 16 in the oxygen supply pipe 16 and the regulator 3.

[102] In the vehicle equipped with the above device, the liquid oxygen tank 1 is installed in the trunk, and liquid oxygen evaporator 2, oxygen gas pipe line, oxygen gas tank, regulator and oxygen sensor are connected in the order into the suction manifolder 19.

[103] At this step, the evaporator is installed in the liquid oxygen tank itself, and the thickness of the pipe composing the oxygen gas supply pipes 17 is in the order that can maintain 21% of suction capacity of the suction pipe. The rate of cross section of the pipe supplying pure oxygen to the cross section of the pipe supplying natural air containing 21% of oxygen is 21:100, and the thickness should be adjusted in this range. Large pressure is applied to the combustion room when oxygen gas is supplied, and if the pipe is too thick, the pressure is reduced and if the pipe is too thin, there can be problem in supplying oxygen.

[104] The liquid oxygen tank 1 is manufactured to endure very high pressure, but it should be kept in the place where excellent material for shielding heat is equipped.

[105] In the present invention constructed as described above, the liquid oxygen stored in the liquid oxygen tank 1 is converted to oxygen gas with low temperature. When this oxygen gas is provided to the combustion room of the engine, the temperature of this oxygen gas is considerably lower than the air which is supplied through the intercooler of the turbo engine. This low temperature oxygen gas affects the combustion of the fuel in the combustion room suppressing the generation of nitro-oxide (NOx).

[106] This oxygen gas is stored in the oxygen gas tank 15, and exhausted to the suction manifolder 19 through the oxygen gas supply pipe 17, mixed with the air flowing along the suction pipe 12 in the suction manifolder 19, and provided into the cylinder 10, thereby improving output and lowering exhaust gas due to the higher concentration of oxygen than using the natural air.

[107] And the oxygen sensors 8, 16 measure the amount of supplied oxygen, revolution of the engine, the temperature of cooling water, the amount of introduced air and the amount of exhaust gas, and determine the appropriate amount of fuel to be supplied and send the fuel to the injector. It is required that the oxygen sensors detect in the extended range starting from 21% to 100%.

[108] Especially, when the concentration of the oxygen is set to about 36% by the oxygen sensor, about 36% of fuel consumption is reduced, and when concentration of the oxygen is about 30% in the diesel engine, the reduction in fuel consumption is about 31%.

[109] Therefore, in the case of vehicle affected by the element of volume and weight of the system like the passenger vehicles, the concentration of oxygen in the inductor can be fixed to 30 or 40% in operation, but other method of adjusting the concentration of the oxygen according to the surroundings can be adopted. In other words, the concentration of the oxygen can be controlled between 21%and 100% according to the surroundings and in this case, electronic control device can be used to control the supplied fuel by using the calculated value through processor. Industrial Applicability

[110] By using the engine of the present invention, various technical and economic effects can be obtained.

[I l l] 1. Technical effect

[112] *Reduction of consumed fuel ? The reduction rate of fuel is about 50% for both gasoline and diesel engine when 40% (volume) of oxygen concentration is maintained in the engine input, and the rate is 36% for gasoline engine and 31% for diesel engine when 30% (volume) of oxygen concentration is maintained.

[113] The rate of reduced fuel when oxygen concentration of inducted air is 100% is 78% for the diesel engine and 87% for the gasoline engine.

[114] * Environmentally friendly vehicle ? By maintaining complete or nearly complete combustion, harmful exhaust gas is considerably reduced thereby providing environmentally friendly vehicle.

[115] * Quiet driving - As the oxygen concentration of inducted air is increased, pumping loss is reduced and vibration and noise is decreased making the driving quiet.

[116] * Starting power, accelerating power, climbing power, engine response is excellent.

[117] 2. Economic effect

[118] *As of June, 2007 - Registered gasoline cars = about 8,000,000

[119] Registered diesel cars = about 6,000,000

[120] * As of January 1, 2007 - Use of oil for transportation as of June (Korean Association of oil) [121] Gasoline = 4,614,394,500 liter

[122] Diesel = 9,066,152,460 liter

[123] The amount of price of used gasoline = \ 6,921, 591,750,000(\ 1,450 per unit)

[124] Diesel = \ 10,879,382,952,000(\ 1,200 per unit)

[125] * Reduced fuel (assumed) - \ 7,120,389,880,800 (6 months)

[126] When 40% of fuel is reduced - 6,921,591,750,000 x 40% = 2,768,636,700,000

[127] When 40% of gasoline is reduced - 6,921,591,750,000 x 40% = 2,768,636,700,000

[128] When 40% of diesel is reduced - 10,879,382,952,000 x 40% = 4,351,753,180,000

[129] * With 40% of fuel reduction, required amount of liquid oxygen = about 1.2 times of fuel

[130] (4,614,394,500 + 9,066,152,460) x 1.2 = 15,048,601,656 [131] 15,048,601,656 x 170 (price of 1 liter of liquid oxygen) = 2,558,262,281,520 [132] * New market of \ 2,558,262,281,520 of liquid oxygen is formed (per 6 months) [133] (Market of storing vessel of liquid oxygen) [134] * Domestic production of cars in the first half of 2007 [135] Total production = 2,609,799 [136] Export = 2,014,485 [137] Domestic sale = 595,314 [138] Gasoline, diesel car = Domestic sale x 85% [139] Gasoline, diesel car = 506,000(first half of 2007) [ 140] Price of storing vessel = \ 150,000 per unit [141] Demand for storing vessel for new vehicle = 506,000 x 1,500,000 = \

759,000,000,000(six months) [142] {Demand of exchange for existing vehicles= (gasoline car + diesel car) x

1,500,000

[143] 14,000,000 x 1,500,000 = \ 21,000,000,000,000}

[144] * Calculated as of the first half of 2007, based on the production in the first half of

2007. Demand for existing cars is calculated assuming the number of cars as of June

30 is 14,000,000 combining gasoline cars of 7,998,602 and diesel cars of 5,951,938 among registered cars of 16,106,960. It is assumed all the cars are converted to the engine of the present invention.

Claims

[1] A device for enhancing the output of an internal combustion engine by using high concentration oxygen, which is composed of a cylinder into which fuel is introduced via an injector, and a suction pipe installed on one side of a suction manifolder of the cylinder for suctioning air, and which combusts through the fuel mixed with the air, the device comprising: an oxygen sensor and a regulator, which are installed to supply air to the suction manifolder with constant pressure, an oxygen gas tank connected between the oxygen sensor and regulator which supplies oxygen gas, and an oxygen tank which contains liquid oxygen being connected through pipe in order to supply oxygen gas to the oxygen gas tank. [2] The device for enhancing the output of an internal combustion engine by using high concentration oxygen of claim 1, wherein the ratio of cross section of the oxygen supplying pipe which supplies oxygen to the cross section of the suction pipe is set to 21:100. [3] The device for enhancing the output of an internal combustion engine by using high concentration oxygen of claim 1, wherein the amount of oxygen provided through the suction manifolder exceeds 21% and less than 100%.