JP2015075093A - Adjustment of gas-liquid mixing ratio in gas-liquid mixture fuel manufacturing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To adjust a gas-liquid mixture ratio in manufacturing a gas-liquid mixture fuel.SOLUTION: In a method of adjusting a gas-liquid mixing ratio in manufacturing a gas-liquid mixture fuel, including a gas flow rate regulator for mixing gas into a liquid fuel, a pressure sensor for measuring a pressure of a gas-liquid mixture fuel, a temperature sensor for measuring a temperature of the gas-liquid mixture fuel, and a control circuit for controlling a flow rate of the gas mixed into the liquid fuel on the basis of pressure information and temperature information of the gas-liquid mixture fuel, and information from an internal combustion engine and a combustion device, the gas-liquid mixing ratio is variable by adjusting the flow rate of the gas mixed into the liquid fuel on the basis of the pressure information and temperature information of the gas-liquid mixture fuel, and the information from the internal combustion engine and the combustion device, in manufacturing the gas-liquid mixture fuel by mixing the gas into the liquid fuel.

Description

  The present invention relates to adjustment of a gas-liquid mixture ratio in a gas-liquid mixed fuel manufacturing apparatus for manufacturing a gas-liquid mixed fuel in which gas is mixed with liquid fuel such as light oil, heavy oil, biofuel or gasoline supplied to an internal combustion engine or a combustion apparatus. About.

  In internal combustion engines such as automobile engines that use liquid fuels such as gasoline, light oil, biofuel or heavy oil, or in combustion devices such as burners, by increasing combustion, output is increased, fuel efficiency is reduced, and efficiency is increased. Various ideas have been proposed to achieve improvement in the quality and reduction in the amount of harmful substances emitted.

  In internal combustion engines and combustion devices that use liquid fuel, by making the particle size of fuel from the injection nozzle finer, the efficiency of combustion is improved, and harmful substances from exhaust gas are reduced and output is increased. Ingenuity has been made.

  In particular, in diesel engines, in order to reduce the fuel injection particle diameter, a plurality of finer nozzle hole diameters are processed, and in order to obtain the effect of the fine processing, further measures such as intermittent injection at higher pressures have been made.

  In the internal combustion engine and the combustion apparatus, gas is mixed to cause a decrease in output and an increase in harmful substances in the exhaust gas, sometimes causing the internal combustion engine to stop and incomplete combustion or combustion stop of the combustion apparatus.

  In particular, in diesel generators, a large amount of black smoke is discharged when the engine is started until the engine reaches a certain rotational speed.

In an internal combustion engine using liquid fuel, a lot of black smoke and harmful substances are discharged when the load changes suddenly, when it is overloaded, or when the accelerator is stepped on suddenly.

JP 2010-112271 A Japanese Patent Application No. 2008-169250 Japanese Patent Application No. 2009-257175 Japanese Patent Application No. 2007-24012 Japanese Patent Application No. 2010-275966 Japanese Patent Application No. 2007-1000071 Japanese Patent Application No. 2003-336557

  According to Patent Document 2, when a direct injection diesel engine is driven using liquid fuel (light oil) in which gas (air) is refined and mixed, the net fuel consumption rate is an average reduction rate of 14%. It has been described. Thus, it is expected that the fuel efficiency of the engine can be reduced by using the liquid fuel in which air is refined and mixed.

  However, although the fuel consumption rate in the diesel engine has been improved in this way, it has not been put into practical use yet. This is presumably because the average value of the fuel consumption rate is 14%, and the variation is about several to about 20%. It is analyzed that the mechanism of fuel efficiency improvement and exhaust gas reduction is unclear. According to Patent Document 2, the amount of gas mixed with fuel is also as small as 1%.

  When mixing gas into liquid fuel, an attempt is made to mix under normal atmospheric pressure, and if a certain amount of gas is mixed in the liquid fuel, the fuel is cylinderized only by the volume reduction of the gas due to pressurization of the injection pump. It becomes impossible to inject inside, and the gas of a certain level cannot be mixed.

  In internal combustion engines and combustion devices that use liquid fuel, the smaller the injection particle diameter of the liquid fuel, the better the fuel consumption rate, the lower the emission of harmful substances, and the higher the combustion efficiency. It depends on the diameter.

  In order to reduce the injection particles of the liquid fuel, a thinner injection nozzle diameter is required. However, by reducing the injection nozzle diameter, injection at a higher pressure is required. In order to reduce the diameter of the injection nozzle and ensure the injection amount in the injection at a high pressure, it is necessary to lengthen the injection time, but the fuel particles increase by increasing the injection time. As a countermeasure, a plurality of injection nozzle holes are provided, and the injection is divided into several times to solve the problem.

  Due to the precise microfabrication and fine hole diameter of the injection nozzle, metal ions and other impurities adhere to the nozzle, causing problems such as clogging, and new countermeasures are required, and this countermeasure has been proposed.

  Reduction of particulate matter from exhaust gas requires not only new products of internal combustion engines and combustion devices, but also equipment that is currently in operation, but products that are compatible with combustion devices that are currently in operation have been developed. Absent.

  As an environmental measure, attempts have been made to promote subsidies to switch to emission standards that conform to the new standards. However, construction machinery, etc. has been expensive and has not been replaced.

  It is desired to develop a simple method for miniaturizing particles of fuel injection and a device that can be attached to an existing device.

  In internal combustion engines and combustion devices that directly use liquid fuel, not only newly-developed devices but also operating devices are required to reduce harmful substances released from exhaust gas, improve combustion efficiency, and reduce greenhouse gas emissions. It has been.

  In the manufacture of gas-liquid mixed fuel, liquid fuel is pressurized, compressed gas is mixed into the pressurized liquid fuel, and stirred to form a gas-liquid mixed fuel, which is supplied as fuel for the internal combustion engine and the combustion apparatus. In addition, in order to stably supply the gas-liquid mixed fuel to the internal combustion engine and the combustion apparatus, a pressure releaser that releases the pressure at a constant pressure is attached. It is presumed that the gas within a certain amount in the pressurized liquid fuel is in a state close to dissolution because the gas becomes transparent in the gas-liquid mixed fuel and becomes fine bubbles. The gas-liquid mixed fuel in which the gas in the liquid fuel is transparent and close to dissolution does not decrease in volume even when re-pressurized by the injection pump, so that it can be used as the liquid fuel for the internal combustion engine and the combustion apparatus.

  In particular, diesel generators emit a lot of black smoke when the engine is started. In addition, when a diesel vehicle is placed, when the accelerator is stepped on abruptly, a large amount of black smoke is discharged especially when the vehicle is overloaded on an uphill road.

  According to Patent Document 2, when a direct injection diesel engine is driven using liquid fuel (light oil) in which gas (air) is refined and mixed, the net fuel consumption rate is an average reduction rate of 14%. It has been described. Thus, it is expected that the fuel efficiency of the engine can be reduced by using the liquid fuel in which air is refined and mixed.

  However, although the fuel consumption rate in the diesel engine has been improved in this way, it has not been put into practical use yet. This is presumably because the average value of the fuel consumption rate is 14%, and the variation is about several to about 20%. The cause of this variation is analyzed. First, when air is refined, the diameter of the bubbles varies, and if large bubbles of several hundred micrometers or more are mixed, they are injected into the engine. Sometimes the injection pressure of liquid fuel drops due to the large-diameter bubbles and the fuel injection to the engine is interrupted, and the fuel combustion temporarily stops. Second, the pump that injects the liquid fuel into the engine It is presumed that the liquid fuel injection is delayed due to the deterioration of the function such as the idling or stopping of the pump due to the mixing of the large diameter bubbles inside.

  On the other hand, there is a gas-liquid mixed fuel manufacturing method in which a liquid fuel is pressurized, mixed with compressed gas, and stirred to produce a gas-liquid mixed fuel.

  In this gas-liquid mixed fuel manufacturing method and apparatus, liquid fuel is pressurized to a predetermined pressure with an oil pump, compressed gas is mixed into the pressurized liquid fuel with a gas-liquid mixer, and further stirred with a stirrer. Use gas-liquid mixed fuel. There is a storage tank that temporarily stores the gas-liquid mixed fuel in the previous period, and a pipe that returns the gas-liquid mixed fuel to the fuel tank from the upper part of the storage tank, and the pressure is released at a constant pressure in the fuel tank of the pipe A pressure releaser is provided. This storage tank discharges the gas-liquid mixed fuel that rises in a relatively large bubble to the outside through a pressure releaser. Further, it is supplied from the lower part as fuel to the internal combustion engine and the combustion apparatus. The storage tank also serves to float and separate the gas-liquid mixed fuel by returning the floating gas-liquid mixed fuel to the fuel tank through the pressure releaser.

  Some internal combustion engines and combustion devices have a return pipe for extracting gas from liquid fuel and a return pipe for returning surplus fuel. A pressure releaser is provided for each return pipe. ing.

  The pressure releaser for the gas-liquid mixed fuel connected to the storage tank and the pressure releaser connected to the return pipe are set to the same pressure. Maintained at pressure.

  In producing a gas-liquid mixed fuel, the liquid fuel is pressurized, compressed gas is mixed into the pressurized liquid fuel, the liquid fuel mixed with the gas is stirred, stored in a storage tank, and stored in the storage tank. By floating and separating the mixed fuel, the liquid fuel becomes a refined gas-liquid mixed fuel and is connected to the internal combustion engine and the fuel piping of the combustion device from the lower part of the storage tank. By adjusting the flow rate of the compressed gas with the gas flow rate adjuster, the gas-liquid mixed fuel supplied as the fuel for the internal combustion engine and the combustion apparatus from the lower part of the storage tank becomes transparent, and the gas is in a state close to dissolution.

  Since the gas becomes fine bubbles in the liquid fuel and becomes transparent, the volume does not decrease even when the pressure is re-pressurized by the injection pump. Does not cause volume reduction. Since the gas-liquid mixed fuel does not decrease in volume even when repressurized by an injection pump or the like, it can be used as a fuel for an internal combustion engine and a combustion apparatus.

  The amount of gas that makes the gas transparent in the gas-liquid mixed fuel is pressure dependent. The higher the applied pressure, the greater the mixing amount, and the lower the pressure, the smaller the mixing amount.

  Further, the amount of gas in which the gas becomes transparent in the gas-liquid mixed fuel is temperature-dependent, and the gas content decreases as the temperature of the gas-liquid mixed fuel increases, and the gas content increases as it decreases.

  Since the combustion efficiency is affected when the gas flow rate is small, the highest gas amount that makes the gas-liquid mixed fuel transparent is ideal. When the gas amount of the gas-liquid mixed fuel is large, the gas-liquid mixed fuel becomes cloudy and affects the fuel injection of the fuel injection pump.

  In the gas-liquid mixed fuel production, the device has a pressure sensor that measures the pressure of the gas-liquid mixed fuel, a temperature sensor that measures the temperature of the gas-liquid mixed fuel, and adjusts the flow rate of the compressed gas mixed with the liquid fuel A control circuit that controls the gas-liquid mixing ratio, and includes information from the pressure sensor, information from the temperature sensor, information from the internal combustion engine and the combustion device, and information from the gas-liquid mixing manufacturing device. Then, the gas flow rate regulator is controlled so that the gas-liquid mixture ratio is optimum for the operating conditions of the internal combustion engine and the combustion apparatus.

  As an effect of using gas mixed in liquid fuel, when the gas is transparent in the gas-liquid mixed fuel and the volume is in a reduced state even when repressurized, the fuel injection pump of the internal combustion engine and the combustion apparatus is normal. Fuel can be supplied.

  In an internal combustion engine and a combustion apparatus, fuel is injected as fine particles into a combustion chamber. The finer the injected particles are, the higher the combustion efficiency and the less harmful substances can be discharged. At present, there is a development race to make the spray particles finer.

  In the use of gas-liquid mixed fuel, gas is mixed in the fuel supplied from the internal combustion engine and the combustion device, and the fuel is injected from the fuel injection pump into the combustion chamber. Since the gas-liquid mixed fuel mixed with the injected gas has a high temperature in the combustion chamber, the gas in the fuel undergoes thermal expansion.

  Taking a diesel engine as an example, the temperature in the cylinder is said to be 600 ° C. In air, the volume is doubled with a temperature increase of 273 ° C., and the volume is quadrupled with an increase in temperature of 546 ° C.

  The fuel particles injected into the cylinder are said to be 0.1 microns. It is considered that the fine particles of the gas-liquid mixed fuel expand about 4 times as much as the mixed gas, and expand and rupture the 0.1 micron fine particles from the inside, thereby making the particles finer.

  According to a private experiment, fuel consumption has been improved by 39% or more, black smoke has been reduced to 1/20 or less, and output has been improved by 25% or more. It is assumed that the fine particles of the gas-liquid mixed fuel from the injection nozzle are further refined. At this time, the amount of mixed gas is 100% by volume at normal pressure.

  The amount of gas that can be dissolved in gas-liquid mixed fuel is pressure-dependent. By monitoring the pressure of gas-liquid mixed fuel and controlling the flow rate of gas that matches the pressure, the optimal mixing ratio can be achieved. .

  By making the amount of mixed gas larger and making the gas ratio of the gas-liquid mixed fuel more than the transparent amount, it is made to exist as fine bubbles in the gas-liquid mixed fuel. The gas present as fine bubbles in the liquid fuel enters the fuel injection pump. The injection pump is pressurized to eject liquid fuel. At the time of this pressurization, the gas mixed in as fine bubbles in the fuel contracts, so that the amount of injection of the injected fuel is reduced by the contraction of the volume of the gas.

  By adjusting the amount of gas mixed into the gas-liquid mixed fuel, it is possible to control the fuel injection amount different from the fuel adjustment of the internal combustion engine and the combustion apparatus.

  Adjustment of the gas amount of the gas-liquid mixed fuel can eliminate, for example, an excessive fuel state such as when climbing up in a diesel vehicle, and reduce emission of harmful substances such as black smoke. Further, even when the accelerator is stepped on suddenly, a large amount of fuel is supplied, and exhaust gas contains a lot of black smoke due to excess fuel, but it can also be used to suppress this graphite.

  For example, when starting a diesel generator, in order to maintain a constant rotational speed as the engine is started, a large amount of fuel exceeding the rotational speed is supplied and a large amount of harmful substances such as black smoke is supplied until the stable rotational speed is reached. Is discharged. This seems to be incomplete combustion due to excessive fuel. In order to reduce the discharge of graphite at the time of starting, the gas flow rate mixed into the liquid fuel is increased and repressurized by the fuel injection pump. The amount of fuel injection is reduced by the reduced amount, and the excessive fuel state at the start can be alleviated.

  Diesel vehicles emit a lot of black smoke and other harmful substances at the time of star, climbing and overload, which is due to excessive supply of fuel, and even in such overload conditions, the gas-liquid mixture ratio It is possible to reduce the emission of harmful substances by controlling.

  Although the explanation has been made mainly for the internal combustion engine, the same applies to the combustion device, and in the gas-liquid mixed fuel production device, it is effective to control the gas-liquid mixture ratio according to the operation, and it is possible to suppress the emission of harmful substances and to improve the efficiency. By selecting a good gas-liquid mixing ratio, it is possible to further reduce the emission of harmful substances.

  The adjustment of the gas-liquid mixture fuel ratio is not always the above-described operation state. The operating status of the internal combustion engine and the combustion device, the temperature of the gas-liquid mixed fuel, the pressure of the gas-liquid mixed fuel, the outside air temperature, the external pressure, etc. are monitored, and the gas becomes transparent in the gas-liquid mixed fuel and becomes close to dissolution. The gas flow rate is adjusted so that the upper limit gas-liquid mixture ratio is obtained. By this adjustment, it is possible to achieve the best combustion efficiency.

  There is a change in the temperature of the gas-liquid mixed fuel between morning and noon, summer and winter, and low and high altitudes. The harmful substances contained in can be minimized in the given environment, and the greenhouse gas efficiency can be reduced by improving the combustion efficiency.

  The information sent to the control circuit includes information on the pressure and temperature of the liquid fuel, the operating status of the internal combustion engine and the combustion apparatus, the exhaust gas status, etc., and the optimal gas-liquid mixture ratio is calculated by the control circuit.

  As a method for adjusting the gas to be mixed into the liquid fuel, it is possible to finely adjust the flow rate by electrically controlling a gas flow rate regulator that can be continuously variable.

  As a method for adjusting the flow rate, there is a method in which a plurality of fixed flow rate regulators having different flow rates are provided, and the flow rate is adjusted by selecting one or a plurality of fixed flow rate regulators.

  In addition, as a flow rate adjustment method, there is a method in which a plurality of fixed flow rate regulators having the same flow rate are provided, and the flow rate is adjusted by selecting the number of fixed flow rate regulators.

  Of course, the information from the internal combustion engine and the combustion device is not limited to the operation status, but also the status of the internal combustion engine and the combustion device. The optimum gas-liquid mixing ratio can be provided by information on harmful substances contained in the exhaust gas discharged.

  The above gas-liquid mixed fuel manufacturing apparatus is attached to the currently operating internal combustion engine and combustion apparatus by simply passing the fuel pipe from the fuel tank via the gas-liquid mixed fuel manufacturing apparatus without changing the internal combustion engine and the combustion apparatus. It is possible to reduce harmful substances in exhaust gas, improve combustion efficiency, improve output and reduce greenhouse gases.

Is a configuration diagram of a basic flow rate control system for mixing gas into liquid fuel in the gas-liquid mixed fuel manufacturing apparatus according to the present invention, and the gas flow rate regulator is a variable gas flow rate regulator.

FIG. 4 is a configuration diagram in which a plurality of fixed gas flow regulators having different flow rates are provided in the gas-liquid mixed fuel manufacturing apparatus according to the present invention, and gas mixing is varied by selecting a fixed gas flow regulator.

Is a configuration diagram in which a plurality of fixed gas flow regulators having the same flow rate for mixing gas into liquid fuel are provided in the gas-liquid mixed fuel manufacturing apparatus according to the present invention, and gas mixing is varied by selecting the number of fixed gas flow regulators. is there.

  Hereinafter, description will be made with reference to FIG.

  In FIG. 1, the liquid fuel supplied from the fuel tank (1) is pressurized by the oil pump (2).

  The amount of gas mixed in the gas compressed by the gas compressor (30) is determined by the gas flow regulator (10).

  Gas is mixed in the fuel by the gas-liquid mixer (3), and the liquid fuel and gas are stirred by the stirrer (4) to make a gas-liquid mixed fuel.

  The gas-liquid mixed fuel is sent to the storage tank (7), and the gas-liquid mixed fuel is stored in the storage tank, so that the fine bubbles are further refined and the gas-liquid mixed fuel is supplied to the fuel tank from the upper part of the storage tank. A discharge pipe is provided, and a gas-liquid gas-liquid mixed fuel pressure releaser (23) is provided at the front end of the fuel tank pipe. By returning the gas-liquid mixed fuel that floats in the storage tank to the fuel tank through the pressure releaser, it also serves to float and separate the gas-liquid mixed fuel that floats.

  The gas-liquid mixed fuel pressure releaser (23) provided in the fuel tank releases the pressure at a constant pressure, whereby the gas-liquid mixed fuel is maintained at the pressure set by the pressure releaser.

  The fuel tank is connected to the internal combustion engine and the fuel piping of the combustion device (8) from the lower part of the storage tank (7), and gas-liquid mixed fuel is supplied to the internal combustion engine and the combustion device. Since the fuel is supplied from the lower part of the storage tank as fuel for the internal combustion engine and the combustion apparatus, the gas-liquid mixed fuel that is further refined from the gas-liquid mixed fuel can be supplied to the internal combustion engine and the combustion apparatus.

  The internal combustion engine and the combustion combustion apparatus have a device having a return pipe (21) for returning the gas in the liquid fuel and a return pipe (22) for returning the surplus fuel. A fuel tank of each return pipe or an integrated pipe. A pressure relief device (24) for return piping is provided at the inner tip. The open pressures of the gas-liquid mixed fuel pressure releaser (23) and the return pipe pressure releaser (24) are the same.

  A pressure sensor (5) for measuring the pressure of the gas-liquid mixed fuel and a temperature sensor (6) for measuring the temperature are attached in the middle of the pipe from the agitator (4) to the storage tank (7). The pressure sensor signal line (51) and the temperature sensor information are connected to the control circuit (9) through the temperature sensor signal line (61).

  In addition to information from the pressure sensor and information from the temperature sensor, the control circuit uses a signal line (81) from the internal combustion engine and the combustion device, and a gas flow rate regulator through a compressed gas flow rate regulator regulator control line (10). To control.

  The control circuit also controls the oil pump through the oil pump control line (92) based on pressure information, temperature information, and information from the internal combustion engine and the combustion device of the gas-liquid mixed fuel.

  Some of the information from the internal combustion engine and the combustion apparatus includes start-up information, load information, fuel supply information, exhaust gas information, fuel consumption information, and the like.

  The effect of controlling the gas-liquid mixture ratio of the gas-liquid mixed fuel will be described by taking a diesel generator as an example. Since the diesel generator maintains a constant rotational speed from the start at the start, a large amount of fuel is supplied, A large amount of black smoke due to excessive fuel is discharged until the number of revolutions reaches. The amount of gas in the gas-liquid mixed fuel is increased by the information at the time of engine start, and it becomes cloudy. The cloudy gas-liquid mixed fuel is sent to the injection pump of the diesel generator. The injection pump pressurizes the cloudy gas-liquid mixed fuel with the injection nozzle. Bubbles in the gas-liquid mixed fuel are reduced in volume by pressurization, and the fuel injection amount from the injection pump is reduced by the volume reduction. By reducing the fuel injection amount, the excessive fuel state at the start of the diesel generator is eliminated. When the diesel generator reaches a predetermined rotation speed, the gas-liquid mixture ratio is returned to normal.

  In the experiment contents in the diesel generator, when the gas flow rate was gradually increased and the gas flow rate was gradually increased, the black smoke at the start started to decrease, and further increased, the black smoke at the start decreased greatly. When further increased, black smoke could not be confirmed, but as the engine speed increased, engine tone was slightly disturbed. From this experiment, it was found that the effect can be expected more by controlling the gas-liquid mixing ratio so that the gas amount is increased at the time of star and the gas flow rate is reduced simultaneously with the rotation.

  Although an example was taken at the time of starting the diesel generator, in a diesel engine, when the engine is overloaded, excessive fuel conditions such as sudden depression of the accelerator can be alleviated, and emission of harmful substances such as black smoke can be reduced.

  The amount of mixed gas that is transparent in the gas-liquid mixed fuel varies depending on the pressure and temperature. The highest gas / liquid mixing ratio at which the gas / liquid mixed fuel is transparent in a given environment is most desirable. The control circuit controls not only the information from the internal combustion engine but also the gas-liquid mixed fuel pressure information from the pressure sensor and the gas-liquid mixed fuel temperature information so as to obtain an optimum gas-liquid mixing ratio.

  The gas-liquid mixed fuel that has become transparent is dependent on the temperature of the gas-liquid mixed fuel as described above, and the temperature of the gas-liquid mixed fuel is affected by the outside air temperature. The temperature of the gas-liquid mixed fuel is also affected by the temperature difference between morning and evening, the temperature difference between the lowlands and highlands, the temperature difference depending on the season, etc. In order to minimize this influence, the temperature of the gas-liquid mixed fuel is measured, and the upper limit gas flow rate at which the gas-liquid mixed fuel becomes transparent under the temperature condition of the gas-liquid mixed fuel is adjusted.

  FIG. 2 is a block diagram provided with a plurality of fixed gas flow regulators (11) having different flow rates, and by selecting one and a plurality of fixed flow regulators, the gas ratio of the gas-liquid mixed fuel can be changed. is there.

  Fig. 3 is a block diagram with multiple fixed flow rate regulators (12) with the same flow rate, and by changing the number of fixed flow rate regulators (12), it is possible to change the gas ratio of the gas-liquid mixed fuel. .

  Although the present invention has been described mainly with respect to the embodiment of reducing black smoke at the start of the diesel generator, it is not limited to the purpose of reducing black smoke at the start of the diesel generator, and the gas of the gas-liquid mixed fuel By controlling the mixing amount, it is utilized in a direction that makes it possible to optimize the exhaust gas, fuel consumption, and output of the internal combustion engine and the combustion apparatus.

  Although the present invention has been specifically described based on the embodiments, it is needless to say that the present invention is not limited to the above-described embodiments and can be variously modified without departing from the gist thereof. In each of the above-described embodiments, the light oil is exemplified as the liquid fuel of the internal combustion engine and the combustion apparatus, but in addition, various waste oils such as heavy oil, gasoline, bioethanol, biogasoline, lubricating oil and edible oil, etc. The fuel can be pressurized to form a mixed fuel in which the gas is completely dissolved or fine bubbles are dispersed in the fuel. In addition to automobile and ship engines, internal combustion engines include generators with engines, tractors, cultivators, rice transplanters, rice harvesters, brush cutters, various agricultural machines, aircraft engines, and construction / architectures. It can also be applied to mechanical engines. As a combustion device, it can also be applied to devices using the above liquid fuel.

DESCRIPTION OF SYMBOLS 1 Fuel tank 2 Oil pump 3 Gas-liquid mixer 4 Stirrer 5 Pressure sensor 6 Temperature sensor 7 Storage tank 8 Internal combustion engine and combustion apparatus 9 Control circuit 10 Gas flow regulator 11 Fixed flow regulator 12 with different flow rates Fixed with same flow rate Flow rate regulator 21 Return pipe 22 for returning the gas in the fuel of the internal combustion engine and the combustion apparatus Return pipe 23 for returning the surplus fuel of the internal combustion engine and the combustion apparatus Pressure releaser 24 for the gas-liquid mixed fuel Pressure releaser 51 for the return pipe Pressure sensor Signal line 61 Temperature sensor signal line 81 Signal line 91 from the internal combustion engine and combustion apparatus Gas flow rate adjustment control line 92 Oil pump control line 111 Fixed gas flow rate regulator 112 having different flow rates Fixed gas flow rate regulator having the same flow rate

Claims (4)

The gas-liquid mixture ratio adjustment in the gas-liquid mixed fuel production apparatus,
Liquid fuel from the fuel tank is pressurized by an oil pump, compressed gas is mixed into the pressurized liquid fuel, and a gas-liquid mixed fuel is prepared by stirring and a storage tank is provided to temporarily store the gas-liquid mixed fuel. A pipe that returns the gas-liquid mixed fuel to the fuel tank from above and a pressure releaser in the fuel tank of the pipe, and the gas-liquid mixed fuel is kept constant by releasing the pressure of the gas-liquid mixed fuel at a constant pressure by the pressure releaser Maintain pressure and connect to the internal combustion engine and combustion equipment fuel piping from the bottom of the storage tank. For equipment with internal combustion engine and combustion equipment return piping, install a pressure release on the return piping and use it as gas-liquid mixed fuel In the gas-liquid mixed fuel manufacturing apparatus that enables
A pressure sensor for detecting the pressure of the gas-liquid mixed fuel;
A temperature sensor that detects the temperature of the gas-liquid mixed fuel;
A gas flow rate regulator for adjusting the flow rate of the compressed gas to be mixed with the liquid fuel;
A control circuit for controlling the gas flow rate regulator based on pressure information of gas-liquid mixed fuel, temperature information, information from the internal combustion engine and the combustion device,
Gas / liquid mixed fuel production in which the control circuit controls the gas / liquid mixture ratio by adjusting the flow rate of compressed gas mixed in the liquid fuel according to the pressure information, temperature information, and information from the internal combustion engine and the combustion device. Gas-liquid mixing ratio adjustment in the device. The gas flow regulator is equipped with a variable flow regulator,
By controlling the control circuit,
The gas-liquid mixture ratio adjustment in the gas-liquid mixed fuel manufacturing apparatus according to claim 1, wherein the flow rate of the gas mixed into the liquid fuel is adjusted. Equipped with multiple fixed flow regulators with different flow rates,
By selecting one or more fixed flow regulators by the control circuit,
The gas-liquid mixture ratio adjustment in the gas-liquid mixed fuel manufacturing apparatus according to claim 1, wherein the flow rate of the gas mixed into the liquid fuel is adjusted. With multiple fixed flow regulators fixed at the same flow rate,
The gas-liquid mixture ratio adjustment in the gas-liquid mixed fuel manufacturing apparatus according to claim 1, wherein the flow rate of the gas mixed into the liquid fuel is adjusted by selecting the number of fixed flow rate adjusting devices by the control circuit.

Images