KR101063096B1 - Fuel heating device using exhaust heat with MH module - Google Patents

Abstract

The present invention relates to a fuel heating device, and more particularly, because the fuel which can be supplied at a low temperature is supplied to the cylinder as a gas having good explosive power through a high temperature and high pressure state through exhaust gas, and thus a stable explosive force in a good state. It is possible to improve the performance of the car, thereby making the combustion of the fuel completely, so that the drag does not occur, so that the durability of the engine parts of the car is improved, and the smoke of incomplete combustion does not occur, thereby causing environmental pollution. The present invention relates to a fuel heating device using an exhaust heat provided with an MH module that improves fuel efficiency while preventing the fuel cell.

Such a feature of the present invention is a fuel pump 16 for pumping fuel in the fuel tank 15 to the injector 12 coupled to the engine 10; A fuel supply pipe 20 connected to the fuel pump 16 to supply fuel to the injector 12; Located in or outside the exhaust pipe 13 through which exhaust gas discharged from the engine 10 passes, the MH module 31 connected to one side of the fuel supply pipe 20 is included.

Fuel, Automobile, Exhaust Gas, Heating, Exhaust Pipe, Fuel Pump, Fuel Tank

Description

FUEL HEATING APPARATUS WITH MFH MODULE FOR CAR EXHAUST GAS'S HEAT}

The present invention relates to a fuel heating device, and more particularly, because the fuel that can be supplied at low temperature is supplied to the cylinder as a gas having good explosive power at high temperature and high pressure through exhaust gas, thereby providing a stable and good explosive power. It is possible to improve the performance of the automobile, thereby completely burning the fuel, so that the soot does not occur, so that the durability of the engine parts of the automobile is improved, and the smoke of incomplete combustion is not generated so that the environmental pollution is also prevented. In addition, the present invention relates to a fuel heating device having an MH module that improves fuel efficiency and uses exhaust heat.

In general, the vehicle is operated by the control of the controller, the fuel pump in the fuel tank is operated, the injector supplied with the fuel is operated, the engine is started by the operation of the start motor. The engine is monitored by the fuel pump, the injector, the piston and the cylinder, and the operation of the vehicle is checked for correctness.

The fuel supplied to the cylinder through the injector is sprayed like a mist in order to explode well. Thus, a strong pressure is applied to spray the fuel, which is a low temperature liquid, like a gas. As described above, the fuel sputtered like a mist in a diesel engine, a gasoline engine, etc., is to be burned by the high pressure in the diesel engine, the fuel is burned by the spark plug in the gasoline engine.

However, it will not be easy to explode the fuel supplied at low temperatures, and in fact, in the cold state such as winter, the diesel engine will need to have a separate heating coil to obtain explosive power.

In addition, even in the case of gasoline engine, if the state of the fuel sprayed by the cylinder is not sprayed like a fog, an abnormal explosion occurs, the engine starting state is poor.

In this way, when the fuel becomes low temperature and the explosive power of the engine is not properly exhibited, the fuel is not completely burned, and the output of the vehicle is lowered. Incomplete combustion of fuels, in particular, can cause pollutants such as carbon monoxide to cause environmental pollution.

Further, incomplete combustion forms soot inside the engine, and if soot is caught in cylinders, valves, and members due to incomplete combustion, the durability of the engine components becomes weak, which may cause problems.

In order to solve the above problems, the present invention supplies a fuel which can be supplied at a low temperature to the cylinder as a gas having good explosive force at high temperature and high pressure through exhaust gas, thereby obtaining a stable and good explosive force. Therefore, the purpose is to improve the performance of the car.

In particular, when the fuel is to be vaporized like a mist in the cylinder to spray the fuel can be easily sprayed even if the high-pressure generating members as in the prior art, it is an object to simply provide a component of the component engine.

Furthermore, since the combustion of the fuel is completed completely, soot does not occur, so that the durability of the engine parts of the automobile is improved, so that the smoke of incomplete combustion is not generated, thereby preventing environmental pollution and improving fuel economy. .

In order to achieve the above object, a fuel heating device equipped with an MH module according to the present invention using exhaust heat includes fuel for pumping fuel in a fuel tank 15 to an injector 12 coupled to an engine 10. Pump 16; A fuel supply pipe 20 connected to the fuel pump 16 to supply fuel to the injector 12; Located in or outside the exhaust pipe 13 through which exhaust gas discharged from the engine 10 passes, the MH module 31 connected to one side of the fuel supply pipe 20 is included.

A catalyst heating module 41 coupled to the three-way catalyst 14 coupled to the exhaust pipe 13 and connected to the fuel supply pipe 20 may be further included. The injector 12 is connected to the fuel supply pipe. A fuel return unit 32 is provided to supply fuel left by injection from the fuel injection line 33 to the FM module 31, and the fuel return module 31 is provided with the fuel return. A fuel reverse sequential valve 34 connected to the line 33 may be provided to open only when the fuel returned from the fuel return unit 32 is supplied.

In addition, the fuel supply pipe 20 includes a fuel pump line 21 connected between the fuel pump 16 and the MH module 31; A fuel MH line 22 connected between the MH module 31 and the catalyst heating module 41; A fuel injector line 23 connected between the catalyst heating module 41 and the injector 12 may be included. The fuel injector line 23 may be connected to the fuel pump line 21. When the previous fuel is overheated and pressurized, the MPH bypass unit 35 may be provided to supply the high-pressure fuel to the fuel FM line 22, and the fuel FM line 22 may be provided. The catalyst bypass unit 36 may be connected to supply the high pressure fuel to the fuel injector line 23 when the previous fuel of the catalyst heating module 41 is overheated and pressurized.

And a fuel detection sensor 52 for detecting the amount of fuel in the fuel tank 15; An exhaust temperature sensor 53 for sensing a temperature of the exhaust gas discharged to the exhaust pipe 13; A fuel supply temperature sensor 54 for sensing a temperature of the fuel supplied through the fuel supply pipe 20; Receives a detection signal transmitted from the fuel sensor 52, the exhaust temperature sensor 53, the fuel supply temperature sensor 54, the fuel pump 16 is operated and the injector 12 The main controller 51 for controlling the operation may be included.

Further in the control method of the fuel heating device according to the present invention,

A sensor initial value detecting step (S01) receiving a signal for the fuel amount from the fuel detecting sensor 52 and receiving an initial sensor value from the exhaust temperature detecting sensor 53 and the fuel supply temperature detecting sensor 54;

A fuel pumping step (S02) to allow fuel to be supplied to the injector 12 coupled to the engine 10 by operating the fuel pump 16 coupled to the fuel tank 15;

An exhaust temperature sensing step (S03) of sensing a temperature of exhaust gas discharged from the engine 10;

A supply fuel temperature sensing step (S04) of detecting a temperature of the fuel supplied through the FM module 31 and the catalyst heating module 41 coupled to the exhaust pipe 13;

The MH module 31 is provided with an MH module 31 and a feed fuel pressure sensing step (S05) for detecting the pressure of the fuel supplied before and after the catalyst heating module 41 is provided with exhaust heat The control method of the fuel heating apparatus using the can be provided.

According to the present invention configured as described above, since the fuel which can be supplied at a low temperature is supplied to the cylinder as a gas having good explosive force at high temperature and high pressure through exhaust gas, a stable and good explosive force can be obtained, thereby There is an excellent effect to improve the performance of.

In particular, when it is necessary to spray the fuel vaporized like a mist into the cylinder, it can be easily sprayed even if it is not provided with a high-pressure generating member as in the prior art, there is an advantage that the component of the component engine can be simply provided.

Furthermore, since the combustion of the fuel is completely performed, soot does not occur, so that the durability of the engine parts of the automobile is improved, so that the smoke of incomplete combustion is not generated, thereby preventing environmental pollution and improving fuel economy. .

Hereinafter, with reference to the accompanying drawings will be described in detail.

1 is a schematic configuration diagram of a fuel heating apparatus according to the present invention, FIG. 2 is a schematic configuration diagram of a fuel return unit of a fuel heating apparatus according to the present invention, and FIG. 3 is a catalyst of a fuel heating apparatus according to the present invention. 4 is a schematic block diagram of a heating module, FIG. 4 is a control block diagram of a fuel heating device according to the present invention, and FIG. 5 is a flowchart of a control method of the fuel heating device according to the present invention.

That is, the fuel heating device A according to the present invention is injected from the injector 12 of the engine 10 by receiving the fuel in the fuel tank 15, as shown in Figures 1 to 5, the engine 10 The present invention relates to a fuel system of a mechanical device which operates by burning an engine for automobiles, marine engines, thermal power engines, working engines, and other fossil fuels provided by members such as pistons and cylinders.

In particular, the fuel injected into the cylinder from the injector 12 may be generally sprayed in a mist by mixing a predetermined ratio with air, and is thus sprayed like a mist, so that the fuel is easily ignited or exploded.

In the present invention, such a fuel is to facilitate the high-temperature and high-pressure gas to look at the specific configuration as follows.

That is, a fuel pump 16 for pumping fuel in the fuel tank 15 to the injector 12 coupled to the engine 10 is provided to supply the fuel, and is connected to the fuel pump 16 to the injector 12. ) Is supplied to the fuel supply pipe 20 to be supplied with fuel.

In particular, the fuel heating device (A) according to the present invention is located inside or outside the exhaust pipe 13 through which the exhaust gas discharged from the engine 10 passes the MH module 31 connected to one side of the fuel supply pipe 20. (MFH MODULE, Muffler's Fuel Heating Module) is provided. Therefore, by applying to engines, marine engines, thermal engines, working engines, and other machinery for burning and operating fossil fuels, the engine and the device are operated stably while reducing the amount of fuel consumed.

In addition, the catalyst heating module 41 coupled to the three-way catalyst 14 coupled to the exhaust pipe 13 and connected to the fuel supply pipe 20 may be provided together.

Of course, in various embodiments of the present invention, it is obvious that only the FM module 31 or the catalyst heating module 41 may be provided, and such various embodiments are within the scope of the present invention. It is natural.

According to the fuel heating device A according to the present invention provided as described above, the fuel supplied to the injector 12 through the fuel supply pipe 20 passes through the MH module 31 and the catalyst heating module 41. While being supplied to the injector 12 while being heated at high temperature and high pressure, it is provided to obtain the best explosive force.

Therefore, the fuel supplied to the injector 12 at such a high temperature can be easily vaporized.

In particular, the injector 12 should be configured in a precise configuration for generating a high pressure in order to artificially make a fog, but according to the fuel heating device A according to the present invention, the fuel is easily fogged at high temperature and high pressure. It can be sown, and therefore can easily ignite and undergo combustion. Therefore, according to the present invention, not only the configuration of a member such as an injector can be simplified, but also the combustion is completely performed at the time of combustion, so that the exhaust gas also has an excellent effect of preventing pollution due to the incomplete combustion of gas.

The fuel heating device (A) according to the present invention provided as described above may be returned to the FM module 31 in order to reheat some fuel that is not injected from the injector 12.

In this configuration, the fuel return unit 32 is connected to the fuel supply pipe so that the fuel that is injected from the injector 12 and left is supplied to the MH module 31 through the fuel return line 33. Will be provided.

In the fuel heating device (A) according to the present invention, when the high-temperature exhaust gas passes through the MH module 31 and the catalyst heating module 41, the fuel is also heated to a high temperature, and the fuel supply pipe 20 The fuel passing through can be at high temperature and high pressure. As such, the fuel in the high temperature and high pressure state acts on the fuel return unit 32 and can be supplied to the MH module 31 through the fuel return line 33. Because the fuel return line 33 does not pass through the exhaust pipe, the high temperature fuel will be low temperature and the pressure will also drop. Thus, if a certain amount of fuel is different in the fuel return line 33, the fuel may be supplied to the MH module 31 by the pressure difference between the fuel return unit 32 and the MH module 31, and then M It may be reheated by the H module 31. Of course, it may be provided with a separate pumping means for the circulation of the fuel, such as the fuel return portion 32 and the fuel return line 33.

Such a fuel return unit 32 is provided with a return opening and closing valve 322 that is elastically supported by the return valve spring 321 on one side, the return opening and closing valve (321) by the elastic force of the return valve spring 321 in normal 322 is to block the inlet of the fuel return line (33).

In addition, the MH module 31 may be provided with a fuel reverse sequential valve 34 connected to the fuel return line 33 to open only when the fuel returned from the fuel return unit 32 is supplied. There will be.

Accordingly, when the fuel to be circulated in the fuel return line 33 forms a filling pressure, the fuel circulated by pushing the fuel reverse sequential valve 34 may be supplied to the FM module 31. Of course, as described above, when fuel is collected in the fuel return line 33, a return tank (not shown) for circulating fuel is temporarily collected or pumping means (not shown) for pumping fuel in the return tank may be provided. Could be

The fuel supply pipe 20 of the fuel heating device (A) according to the present invention is provided with a fuel pump line 21 is connected between the fuel pump 16 and the MH module 31; A fuel MH line 22 connected between the MH module 31 and the catalyst heating module 41; A fuel injector line 23 connected between the catalyst heating module 41 and the injector 12 may be included.

Therefore, the fuel in the fuel pump line 21 supplied by the fuel pump 16 is not heated to become a cold state, and the fuel AH line 22 between the MH module 31 and the catalyst heating module 41. The fuel in the) will be in a state of being "primary heated" by the FM module 31, and the temperature will be raised to a certain degree and the pressure will be increased.

In addition, the fuel in the fuel injector line 23 between the catalyst heating module 41 and the injector 12 is "secondarily heated" in the catalyst heating module 41 in addition to the MH module 31, at a very high temperature. Will be heated and the pressure will be elevated.

In this way, the fuel supply pipe 20 to which the fuel is supplied is supplied to the injector 12 in the state of "primary heating" and "secondary heating" by using the MH module 31 and the catalyst heating module 41. When the exhaust gas becomes instantaneous high temperature, the fuel immediately before reaching the MH module 31 and the catalyst heating module 41 becomes instantaneous high temperature and high pressure and reverses the pressure toward the fuel tank 15 side. You can also add In order to prevent this may be provided with a bypass member separately.

That is, the MH bypass is connected to the fuel pump line 21 to supply high-pressure fuel to the fuel MH line 22 when the previous fuel of the MH module 31 is overheated and pressurized. The unit 35 may be provided, or connected to the fuel FM line 22 to supply a high-pressure fuel when the previous fuel of the catalyst heating module 41 is overheated and pressurized. Catalyst bypass portion 36 to be supplied to the side may be provided.

Therefore, when the fuel of the fuel pump line 21 immediately before the FM module 31 is to be circulated to the fuel tank 15 by the momentary high-temperature exhaust gas in the FM module 31, the MH bypass is bypassed. The fuel 35 may be provided to flow the fuel to the fuel HH line 22 by the unit 35, so that the hot fuel may not be drawn into the fuel tank 15 side. At this time, the fuel pressure on the fuel pump line 21 side and the fuel pressure on the MPH bypass portion 35 side will be the same with respect to the MPH module 31, and therefore, the pressure on both sides will be the same. Naturally hot fuel will flow to the catalyst heating module 41 side. Of course, at this time, the MH bypass unit 35 may be provided with a reverse circulation blocking valve (not shown) to prevent flow to the fuel tank 15. Such a reverse circulation blocking valve may be provided to be operated by the pressure applied in the reverse direction from the FM module 31.

Similarly, in the catalyst heating module 41, as in the MH module 31, the catalyst bypass portion for supplying the fuel that can be reversely circulated by the exhaust gas flowing at an instantaneous high temperature to the fuel injector line 23 side. 36 may be provided, and may be provided to safely supply fuel.

The fuel heating device (A) according to the present invention provided as described above is provided with a plurality of sensors for the temperature and pressure of each member, and the flow of the fuel, so as to check the state of each member, to detect the flow, these There may be provided a configuration and control method for each member to operate.

That is, the fuel sensor 52 for detecting the amount of fuel in the fuel tank 15; An exhaust temperature sensor 53 for sensing a temperature of the exhaust gas discharged to the exhaust pipe 13; Each sensor including a fuel supply temperature sensor 54, etc. for sensing the temperature of the fuel supplied through the fuel supply pipe 20 may be provided.

And receiving the detection signal transmitted from the fuel sensor 52, the exhaust temperature sensor 53, the fuel supply temperature sensor 54, the fuel pump 16 is operated and the injector ( 12) may be provided with a main controller 51 to control the operation. Of course, such a main controller 51 may be provided as a compact controller to separately control only the fuel supply system. It may also be applied to processors such as ECU and ECM, which are main processors of automobiles.

Thus, it is possible to detect the temperature, pressure, flow detection, etc. of the fuel for each position of each fuel supply pipe 20, it is provided to sense the temperature of the exhaust gas and the like to transmit the sensor signal to the main controller 51.

Therefore, looking at an embodiment of the control method of the fuel heating device according to the present invention provided as described above are as follows.

First, a sensor initial value detection step S01 that receives a signal for the fuel amount from the fuel sensor 52 and receives an initial sensor value from the exhaust temperature sensor 53 and the fuel supply temperature sensor 54 is performed. .

If the initial values of the sensors are not abnormal, the fuel pump 16 coupled to the fuel tank 15 is operated to supply fuel so that fuel is supplied to the injector 12 coupled to the engine 10. Pumping step (S02) is performed.

When the fuel is supplied to the injector 12 as described above, the fuel is supplied to the cylinder (not shown) of the engine 10, whereby the exhaust gas is discharged through the exhaust pipe according to the explosion in the engine, and in the engine 10 An exhaust temperature sensing step S03 of sensing the temperature of the exhaust gas discharged is performed.

As such, the exhaust gas discharged through the exhaust pipe 13 becomes a high temperature, and thus the temperature of the fuel supplied through the MH module 31 and the catalyst heating module 41 coupled to the exhaust pipe 13 increases. Supply fuel temperature sensing step (S04) for sensing the temperature is performed.

In addition, a supply fuel pressure sensing step S05 for sensing pressure of the fuel supplied before and after the MH module 31 and the catalyst heating module 41 is performed, and each sensed signal is transmitted to the main controller 51. In this case, the main controller 51 stores and senses each sensing value and checks whether there is an abnormality in the fuel system.

Of course, if the temperature is too high, there is no flow of fuel, or if an explosion abnormality is notified or self-calibration is to be able to use the car safely.

In addition, the catalyst heating module 41 or the MH module 31 may have an internal fuel flow line formed in a zigzag form as shown in FIG. 3, and exhaust gas may pass therebetween. Alternatively, the catalyst heating module 41 or the MH module 31 may be formed in the shape of a pipe, the fuel passage line may be formed in a spiral shape on the outer circumference of the pipe, and the exhaust gas may pass through the hollow. There will be. As such, the catalyst heating module 41 and the MH module 31 are coupled to the exhaust pipe 13 through which the exhaust gas passes, and can receive a temperature from the exhaust gas without disturbing the flow of the exhaust gas. It is formed into a structure that allows.

The embodiments of the present invention have been described in detail above, but since the embodiments have been described so that those skilled in the art to which the present invention pertains can easily carry out the present invention, The technical spirit of the present invention should not be interpreted limitedly.

1 is a schematic configuration diagram of a fuel heating device according to the present invention.

2 is a schematic configuration diagram of a fuel return unit of a fuel heating device according to the present invention;

Figure 3 is a schematic diagram of the catalytic heating module of the fuel heating device according to the present invention.

Figure 4 is a control block diagram for a fuel heating device according to the present invention.

5 is a flowchart of a control method for a fuel heating device according to the present invention;

<Description of the symbols for the main parts of the drawings>

A: Fuel heating device

10 engine 12 injector

13 exhaust pipe 14 three-way catalyst

15 fuel tank 16 fuel pump

20: fuel supply pipe 31: FM module

32: fuel return unit 34: fuel reverse block valve

41: catalytic heating module 51: main controller

Claims (7)

A fuel pump 16 for pumping fuel in the fuel tank 15 to the injector 12 coupled to the engine 10; A fuel supply pipe 20 connected to the fuel pump 16 to supply fuel to the injector 12; The MH module 31 is disposed inside or outside the exhaust pipe 13 through which the exhaust gas discharged from the engine 10 passes and connected to one side of the fuel supply pipe 20. In the fuel heating device is further provided with a catalyst heating module 41 is coupled to the three-way catalyst 14 is coupled to the exhaust pipe 13 is connected to the fuel supply pipe 20, The fuel supply pipe 20 is a fuel pump line 21 connected between the fuel pump 16 and the MH module 31, A fuel HH line 22 connected between the MH module 31 and the catalyst heating module 41; The fuel heating device using an exhaust heat is provided with an MH module characterized in that the fuel heating module 41 and the fuel injector line 23 is connected between the injector 12 is included. delete The method of claim 1, A fuel return unit 32 is provided to be connected to the fuel supply pipe so that the fuel injected from the injector 12 and left is supplied to the FM module 31 through the fuel return line 33. The MH module 31 is provided with a fuel reverse sequential valve 34 connected to the fuel return line 33 so as to be opened only when fuel returned from the fuel return unit 32 is supplied. MFC module is provided with a fuel heating device using exhaust heat. delete The method of claim 1, FM bypass unit connected to the fuel pump line 21 to supply a high-pressure fuel to the fuel FM line 22 when the previous fuel of the FM module 31 is overheated and pressurized. 35 is provided, The catalyst bypass unit 36 is connected to the fuel FM line 22 to supply a high-pressure fuel to the fuel injector line 23 when the previous fuel of the catalyst heating module 41 is overheated and pressurized. A fuel heating device using the exhaust heat is provided with the MH module characterized in that it is provided. The method according to claim 1 or 3, A fuel detection sensor 52 for detecting the amount of fuel in the fuel tank 15; An exhaust temperature sensor 53 for sensing a temperature of the exhaust gas discharged to the exhaust pipe 13; A fuel supply temperature sensor 54 for sensing a temperature of the fuel supplied through the fuel supply pipe 20; Receives a detection signal transmitted from the fuel sensor 52, the exhaust temperature sensor 53, the fuel supply temperature sensor 54, the fuel pump 16 is operated and the injector 12 The MH module is provided with a main controller (51) for controlling the operation is provided is a fuel heating device using the exhaust heat. A fuel pump 16 for pumping fuel in the fuel tank 15 to the injector 12 coupled to the engine 10, and a fuel connected to the fuel pump 16 to supply fuel to the injector 12. It is provided with an MPH module 31 located inside or outside the exhaust pipe 13 through which the supply pipe 20 and the exhaust gas discharged from the engine 10 pass and connected to one side of the fuel supply pipe 20. The fuel supply pipe 20 includes a fuel pump line 21 connected between the fuel pump 16 and the MH module 31, the MH module 31, and the catalyst heating module 41. A fuel HFC line 22 connected between the fuel injector line 23 connected between the catalyst heating module 41 and the injector 12 is provided, and is provided in the fuel tank 15. The fuel sensor 52 for detecting the amount of fuel and the temperature of the exhaust gas discharged to the exhaust pipe 13 An exhaust temperature sensor 53 for detecting the temperature, a fuel supply temperature sensor 54 for detecting a temperature of the fuel supplied through the fuel supply pipe 20, the fuel sensor 52, and the exhaust temperature Receiving a detection signal from the sensor 53, the fuel supply temperature sensor 54, the main controller 51 to control the injector 12 to operate the fuel pump 16 is operated In the control method for controlling the fuel heating device included, A sensor initial value detecting step (S01) receiving a signal for the fuel amount from the fuel detecting sensor 52 and receiving an initial sensor value from the exhaust temperature detecting sensor 53 and the fuel supply temperature detecting sensor 54; A fuel pumping step (S02) to allow fuel to be supplied to the injector 12 coupled to the engine 10 by operating the fuel pump 16 coupled to the fuel tank 15; An exhaust temperature sensing step (S03) of sensing a temperature of exhaust gas discharged from the engine 10; A supply fuel temperature sensing step (S04) of detecting a temperature of the fuel supplied through the FM module 31 and the catalyst heating module 41 coupled to the exhaust pipe 13; The MH module 31 is provided with an MH module 31 and a feed fuel pressure sensing step (S05) for detecting the pressure of the fuel supplied before and after the catalyst heating module 41 is provided with exhaust heat Control method of the fuel heating device using.

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