JPH03145559A - Alcohol reforming engine - Google Patents

Abstract

PURPOSE:To reform alcohol with a honeycomb reactor disk heated by exhaust gas and improve fuel consumption by rotatably providing the honeycomb reactor disk exchanging heat with a fluid across an exhaust passage and an intake passage. CONSTITUTION:An intake pipe 14, an exhaust pipe 15 and an air pipe 16 constituted in the vertically divided state are connected to each other by a connection section 1 provided with a circular space storing a honeycomb reactor disk 12 at a division section. The honeycomb reactor disk 12 is rotated in the direction of exhaust passage 3 intake passage 2 air passage 4, and the portion heated by the exhaust passage 3 is immediately heat-exchanged at the intake passage 2 without being cooled by air. The dense mixture of alcohol fuel flowing through the intake passage 2 is heated to reform alcohol. The honeycomb reactor disk 12 is a honeycomb body made of a ceramic material such as silicon carbide with good thermal conductivity, and it is constituted by coating a catalyst such as platinum on the surface.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an alcohol reforming engine equipped with an actor for reforming alcohol fuel.

[Conventional technology]

Conventionally, an intake manifold for an alcohol reformed gas engine is disclosed in Japanese Patent Laid-Open No. 58-67959. The intake manifold of the alcohol reformed gas engine prevents backfire, and supplies reformed gas obtained by reforming alcohol and unreformed alcohol as fuel. a reformed gas fuel intake passage for supplying fuel mixed with intake air;
When supplying alcohol fuel, the alcohol fuel intake passage that supplies intake air or a mixture of the intake air and alcohol fuel is divided in parallel, and the reformed gas fuel intake i
A flame extinguisher is provided only at the downstream end of the 11 passage.

Furthermore, Japanese Utility Model Application Publication No. 59-105052 discloses a safety device for a reformed gas engine.

The safety device for the reformed gas engine reforms liquid fuel into gas using a reformer installed in the engine exhaust passage, and uses the reformed gas as fuel. Attach the outer housing so as to cover it at a predetermined distance, and connect the exhaust i! A heat insulating layer separated from the first passage is provided, and a leakage gas relief passage is provided which communicates and connects the internal space of the heat insulating layer and the intake passage of the engine.

[Problem B to be Solved by the Invention] By the way, environmental pollution caused by exhaust gas emitted from engines has become a problem, and alcohol engines have recently been attracting attention. In an alcohol engine, the content of carbon dioxide gas and carbide in the exhaust gas is extremely small compared to fuels such as gasoline and diesel oil. However, diesel engines that use alcohol fuel have the problem of poor ignition performance. In other words, alcohol has a higher latent heat for vaporization than gasoline; for example, while gasoline requires 0.7% of the heat of vaporization of fuel, alcohol requires 5% of the latent heat of vaporization of fuel. This is because alcohol fuel has the property of being difficult to vaporize. Moreover, the alcohol fuel injected into the compressed air in the combustion chamber from the fuel injection nozzle vaporizes, lowering the temperature of the compressed air and the wall surface of the combustion chamber, thereby worsening ignition.

By the way, it is well known that in alcohol engines that use alcohol such as methanol as fuel, the fuel efficiency is improved by reforming the methanol. The reason is that methanol decomposes thermally,
By applying thermal energy to methanol, it decomposes into hydrogen gas and carbon monoxide. That is, when 2QKcal of heat is applied per mole of methanol, methanol is thermally decomposed into hydrogen and carbon monoxide.

CH,○H+20Kcal →2Ht+CO Therefore, methanol will have hydrogen gas and carbon monoxide as fuel, and methanol fuel will be reformed.

Further, in the case of an adiabatic engine having a combustion chamber having an adiabatic structure, the temperature of exhaust gas exhausted from the combustion chamber increases as much as 1500° C. when the engine is operated at high speed and under high load. In addition, when the engine is running at low speed and under low load, the wall surface of the combustion chamber is not in a high temperature state, and the fuel absorbs vaporization heat from the wall surface, making it impossible to promote vaporization.
When the fuel is alcohol, the latent heat for vaporization is high, so this phenomenon is more pronounced.

The purpose of this invention is to solve the above problems,
Although alcohol fuel has the property of being difficult to vaporize compared to fuels such as gasoline and diesel oil, we focused on the fact that the exhaust gas discharged from an adiabatic engine is high temperature, and we developed a new method in which alcohol fuel is difficult to vaporize compared to fuels such as gasoline and diesel oil. In order to make the alcohol fuel absorb the thermal energy of the exhaust gas and reform the alcohol into a fuel containing hydrogen gas and carbon oxide, an alcohol decomposition tube is installed in the intake passage through which the mixture of alcohol fuel and intake air passes. As a system, a honeycomb reactor disc is arranged which functions as a heat exchanger capable of absorbing heat from the exhaust gas passing through the exhaust passage and effectively imparting the thermal energy to the air-fuel mixture to reform alcohol fuel. The plate is moved between the exhaust passage and the intake passage to improve heat exchange efficiency, allow the thermal energy of the exhaust gas to be sufficiently absorbed into the air-fuel mixture, thermally decompose and reform alcohol fuel, and eliminate intermediate odors such as pungent odors. To provide an alcohol reforming engine that prevents the generation of soil Ivc substances, recovers exhaust gas energy to improve fuel efficiency, and further provides an air passage and controls the temperature with the air-fuel ratio to maintain the temperature at the heat-resistant temperature of the catalyst. That's true.

A further object of the present invention is to provide the alcohol reforming engine in which the honeycomb body constituting the honeycomb reactor disk is made of a ceramic material such as silicon carbide with excellent thermal conductivity, and the surface of the honeycomb body is coated with platinum or the like. Although the catalyst is coated, the heat resistance of the catalyst is an issue, so when the exhaust gas temperature exceeds a certain level, that is, high temperature, the amount of intake air introduced into the combustion chamber from a separate air passage must be reduced. To provide an alcohol reforming engine which performs control to increase the air-fuel ratio and lower the temperature by diluting the air-fuel ratio and improve heat exchange efficiency by rotating a honeycomb reactor disk in accordance with the engine rotation speed. That's true.

[Means to solve the problem]

In order to achieve the above object, the present invention is configured as follows. That is, the present invention provides an intake passage through which a mixture of alcohol fuel and intake air flows, an exhaust passage through which exhaust gas from the combustion chamber flows, an air passage through which intake air flows, and a heat exchanger between the passages and the fluid. An alcohol reformer comprising a honeycomb reactor disk for replacing and reforming the fuel, a fuel injection nozzle disposed in the intake passage upstream of the disk and for injecting alcohol fuel, and a motor for rotationally driving the disk. Regarding the quality engine.

Further, in this alcohol reforming engine, the honeycomb reactor disk is composed of a honeycomb body made of a ceramic material and a catalyst coated on the surface of the honeycomb body.

Alternatively, the present invention provides a honeycomb reactor disk that crosses an intake passage, an exhaust passage, and an air passage for a mixture of alcohol fuel and air to exchange heat with a fluid and reform the fuel, and the intake passage. a fuel injection nozzle and an air-fuel ratio control valve arranged in the air-fuel ratio control valve, an air-fuel ratio control valve that controls the flow rate of the air passage, a motor that rotationally drives the disk, a sensor that detects the operating state of the engine, and a detection signal of the sensor. The present invention relates to an alcohol reforming engine comprising a controller that responsively controls the fuel injection amount and the opening degree of each of the control valves.

Furthermore, in this alcohol reforming engine, the controller controls to open the air-fuel ratio control valve of the air passage to dilute the air-fuel ratio in response to a detection signal in which the detected value by the sensor is equal to or higher than a predetermined temperature. It is something to do.

[Effect]

The alcohol reforming engine according to the present invention is constructed as described above and operates as follows.

This alcohol reforming engine generates heat between the fluid and the air by crossing each passage: an intake passage through which a mixture of alcohol fuel and intake air flows, an exhaust passage through which exhaust gas from the combustion chamber flows, and an air passage through which intake air flows. Since the honeycomb reactor disk is provided to exchange and reform the fuel, the thermal energy of the exhaust gas is transferred from the exhaust passage to the honeycomb reactor disk that functions as a heat exchanger, and the honeycomb reactor disk has a sufficiently high temperature. The high temperature portion of the honeycomb reactor disk passes through the intake passage by rotation. In this case, the rotation direction of the honeycomb reactor disk is set to pass through the exhaust passage, then the intake passage, and finally the air passage, and the air-fuel mixture flowing through the intake passage reduces intake air. By creating an alcohol-rich mixture, the parts heated by the exhaust gas can work effectively on the mixture. That is, the rich mixture of alcohol fuel flowing through the intake passage comes into contact with the honeycomb reactor disk, and the alcohol absorbs heat and is thermally decomposed into hydrogen and carbon monoxide, thereby being reformed. Therefore, the thermal energy of the exhaust gas is absorbed as alcohol reforming energy, and the exhaust gas energy is recovered.

Therefore, it contributes to improving fuel efficiency. However, when the engine is running at high speed and under high load, the exhaust gas reaches a temperature of 1500°C.
Therefore, the thermal energy of the exhaust gas can be fully utilized in balance with the thermal decomposition of alcohol. For example, if the calorific value of methanol is 5400 Kcal,
The amount of heat transferred to the wall surface is approximately 1500 Kcal. Since the amount of heat required for surface modification is 600 Kcal, the thermal energy necessary for modifying methanol can be supplied. Therefore, thermal energy can be recovered from the exhaust gas exhausted from the adiabatic engine.

This alcohol reforming engine also includes a honeycomb reactor disk that crosses an intake passage, an exhaust passage, and an air passage for a mixture of alcohol fuel and air to exchange heat with a fluid and reform the fuel. A fuel injection nozzle and an air-fuel ratio control valve arranged in the intake passage, an air-fuel ratio control valve that controls the flow rate of the air passage, a motor that rotationally drives the disc, a sensor that detects the operating state of the engine, and a sensor that detects the operating state of the engine. Since the controller is configured to control the fuel injection amount and the opening degree of each of the control valves in response to a detection signal, the air-fuel ratio control of the air passage is performed in response to a detection signal in which the value detected by the sensor is equal to or higher than a predetermined temperature. The valve can be opened to dilute the air-fuel ratio and lower the temperature, which can solve the problem of heat resistance of the catalyst in the honeycomb reactor disk, improving the durability of the honeycomb reactor disk. can.

Furthermore, heat exchange efficiency can be improved by synchronizing the motor that rotationally drives the honeycomb reactor disc in accordance with the rotational speed of the engine.

〔Example〕

Embodiments of the alcohol reforming engine according to the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic sectional view schematically showing an embodiment of an alcohol reforming engine according to the present invention, and FIG. 3 shows an embodiment of the alcohol reforming engine according to the present invention, and is a sectional view taken along line III--III in FIG. 1.

This alcohol reforming engine includes, for example, an intake boat and an exhaust port formed in a cylinder head having an adiabatic structure, an intake passage 2 and an air passage 4 communicating with the intake boat, an exhaust passage 3 communicating with the exhaust port, and each passage. 2.3.4
It has a honeycomb reactor disk 12 that can cross the area.

The intake passage 2 is composed of an intake pipe 14 connected to an intake boat that sends intake air into the engine, and the intake pipe 14 is divided into upper and lower parts as shown in FIG. 2 in order to rotatably arrange the honeycomb reactor disk 12. ing. Similarly, the air passage 4 is composed of an air pipe 16 connected to an intake boat that feeds intake air into the engine, and the air pipe 16 is arranged vertically as shown in FIG. It is divided into

Further, the exhaust passage 3 is composed of an exhaust pipe 15 connected to an exhaust port for exhausting exhaust gas from the engine, and the exhaust pipe 15 is arranged as shown in FIG. 2 or 3 in order to rotatably arrange the honeycomb reactor disk 12. It is divided into upper and lower parts as shown in the figure. The intake pipe 14, the exhaust pipe 15, and the air pipe 16, which are configured in a divided state, are connected by appropriate fixing means of pipe joints, and the honeycomb reactor disk 12 is rotatably disposed at these connecting parts l. There is. It is preferable that the rotation direction A of this honeycomb reactor disk 12 rotates in the direction of exhaust passage 3 - intake passage 2 - air passage 4, and the rotation direction A of the honeycomb reactor disk 12 is preferably such that the honeycomb reactor disk 12 rotates in the direction of exhaust passage 3 - intake passage 2 - air passage 4. 2 to perform heat exchange. Furthermore, by making the air-fuel mixture flowing through the intake passage 2 a rich mixture of alcohol fuel, thermal energy effectively acts only on alcohol. Furthermore, a gasket 11 is interposed in each connecting portion 1 to prevent fluid leakage. These intake pipes 14, exhaust pipes 15, and air pipes 16 may be arranged collectively so that the honeycomb reactor circles vi, 12 can rotate to cross each passage constituted by the base pipes, for example. This is preferable. In particular, although the amount of exhaust gas is small at the exhaust port of each cylinder, the amount of exhaust gas is sufficiently large at the portion where the gold cylinders gather, so that the honeycomb reactor circle Fi12 can function effectively. Alternatively, the honeycomb reactor disk 12 may be provided independently at the collective manifold site or the intake/exhaust manifold site.

In this alcohol reforming engine, the honeycomb reactor disk 12 is made of a honeycomb body made of a ceramic material such as silicon carbide, aluminum nitride, or a composite material with good thermal conductivity, and a catalyst such as platinum is coated on the surface of the honeycomb body. It is coated with.

This honeycomb reactor disk 12 is connected to the drive shaft 1 of the motor 5.
3 and is configured to be rotated by the drive of the motor 5. Rotation control of the motor 5 is performed by commands from the controller 10.

In the intake passage 2, a fuel injection nozzle 9 for injecting alcohol fuel into the intake passage 2 is arranged upstream of the honeycomb reactor disk 12.

This fuel injection nozzle 9 injects alcohol fuel supplied from the fuel injection pump 8 into the intake passage 2. The alcohol salt $4 injected from the fuel injection nozzle 9 is mixed with intake air to produce a rich air-fuel mixture.

Furthermore, an air-fuel ratio control valve 6 is provided in the intake passage 2 upstream of the fuel injection nozzle 9 to adjust the amount of intake air introduced into the intake passage 2. Further, in the air passage 4, an air-fuel ratio control valve 7 for adjusting the amount of intake air introduced into the air passage 4 is disposed upstream of the honeycomb reactor disk 12. The opening degree control of these air-fuel ratio control valves 6 and 7 and the amount of alcohol fuel supplied from the fuel injection pump 8 to the fuel injection nozzle 9 are performed by commands from the controller 10.

Controller IO installed in this alcohol reforming engine
, there is a rotation sensor 1 that detects the engine rotation speed N.
A temperature sensor 1 provided in the exhaust passage 3 receives the detection signal from 7 and detects the temperature T of the exhaust gas.
A detection signal from 8 is input. Furthermore, controller 1
At 0, there is a load sensor 1 that detects the engine load.
A detection signal from 9 is input. Engine load,
It can be detected by the amount of depression of the accelerator pedal, but here it is configured to be detected by the flow rate of alcohol fuel supplied from the fuel injection pump 8. The controller 10 receives detection signals from the sensors and controls the rotation of the motor 5 and the opening/closing operation, that is, the opening degree, of the air-fuel ratio control valve 6.7 in response to the operating state of the engine. For example, the rotation of the motor 5 can be controlled in synchronization with the rotational speed N of the engine to improve the heat exchange efficiency of the honeycomb reactor circles vi and 12. In addition, if the temperature of the exhaust gas exhausted from the engine exceeds a predetermined temperature, the air passage 4
The opening degree of the air-fuel ratio control valve 7 provided at
Moreover, is it possible to control the honeycomb reactor disk ■2 to be cooled by the intake air? 111. Therefore, the honeycomb reactor disk 12 is maintained at a temperature lower than the heat resistant temperature, and the durability of the honeycomb reactor disk 12 can be improved.

Next, the operation of the alcohol reforming engine according to the present invention will be explained with reference to FIG. FIG. 4 is a process flow diagram showing an example of the operation of the air-fuel ratio control device for controlling the air-fuel ratio in the alcohol reforming engine according to the present invention.

When the engine starts, the air-fuel ratio control valve 6 is opened in response to a command from the controller 10, and intake air is supplied to the intake passage 2.
At the same time, alcohol fuel is supplied from the fuel injection pump 8 to the fuel injection nozzle 9, and the alcohol fuel is injected into the intake passage 2. Further, the motor 5 is driven and the honeycomb reactor disc 12 is rotated. First, as a first step, by driving the engine, the engine rotational speed N is detected by the rotation sensor 17, and the detection signal is input to the controller 10.

The load sensor 19 detects the amount of fuel supplied from the fuel injection nozzle 9 of the fuel supply pump 8, that is, the engine load, and the detected signal is similarly input to the controller 10 as an engine load signal (step 30).
.

The controller 10 controls the rotation of the motor 5 according to the engine rotation speed N2 detected by the rotation sensor 17, and the honeycomb reactor disc 12 rotates while being controlled to the optimum rotation speed (step 31). issues a command to the air-fuel ratio control valve 6 of the intake passage 2,
The opening degree of the air-fuel ratio control valve 6 is adjusted so as to introduce the optimum intake air for the engine speed N or engine load (step 32).

By this rotation of the honeycomb reactor disk 12, the honeycomb reactor disk 12 exchanges heat with the exhaust gas flowing through the exhaust passage 3 and absorbs thermal energy contained in the exhaust gas. The honeycomb reactor disk 12 heated by the exhaust gas rotates and crosses the intake passage 2. At this time, the honeycomb reactor disk 12 generates thermal energy due to the mixture of intake air and alcohol fuel flowing through the intake passage 2. is absorbed.

The alcohol fuel 4 is thermally decomposed and reformed into hydrogen and carbon monoxide by receiving heat energy. This reformed fuel will be introduced into the combustion chamber and combusted.

Furthermore, the exhaust gas temperature T7 is detected by the salinity sensor 18 provided in the exhaust passage 3, and the detection signal is sent to the controller 1.
0 manually (step 33).

Upon receiving the detection signal, the controller 10 sets the exhaust gas temperature TE to a predetermined temperature T. That is, a comparison is made to determine whether the temperature is higher than the allowable temperature limit of the catalyst of the honeycomb reactor disc 12 (step 34). The exhaust gas temperature T is a predetermined temperature T. If lower, honeycomb reactor disk 1
Since there is no problem with the catalyst No. 2, control is performed to maintain the current air-fuel ratio in order to maintain the current operating state of the engine. For example, the opening degree of the air-fuel ratio control valve 7 provided in the air passage 4 is maintained in the closed state while leaving the opening degree of the air-fuel ratio control valve 6 unchanged (step 38).

In step 34, the exhaust gas temperature T0 is set to a predetermined temperature T. If the temperature is higher than that, the catalyst in the honeycomb reactor disk 12 has exceeded its heat-resistant temperature, so if the engine is driven in this state, the honeycomb reactor disk 12 will be thermally destroyed, so control is performed to dilute the air-fuel ratio. In order to do this, the air-fuel ratio control valve 7 of the air passage 4 is opened to supply intake air from the air passage 4 to the engine (Step 35), and control is performed to increase the amount of intake air supplied from the air passage 4 to the engine. (Step 36). As a result, the amount of intake air increases due to the amount of intake air from the air passage 4 and the intake passage 2, and the air-fuel ratio with alcohol fuel becomes lean (
Step 37). Therefore, the combustion state of the engine decreases and the exhaust gas temperature tends to decrease, and the intake air flowing through the air passage 4 exchanges heat with the honeycomb reactor disk 12, and the honeycomb reactor disk 12 is cooled. The catalyst in the honeycomb reactor disk 12 is maintained at a temperature below its allowable temperature.

〔Effect of the invention〕

The alcohol reforming engine according to the present invention is configured as described above and has the following effects.

This alcohol reforming engine generates heat between the fluid and the air by crossing each passage: an intake passage through which a mixture of alcohol fuel and intake air flows, an exhaust passage through which exhaust gas from the combustion chamber flows, and an air passage through which intake air flows. Since a honeycomb reactor disk is provided for exchanging and reforming the fuel, the thermal energy of the exhaust gas is transferred from the exhaust passage to the honeycomb reactor disk, and the honeycomb reactor disk becomes sufficiently hot; A high temperature portion of the honeycomb reactor disk passes through the intake passage by rotation. At this time, the alcohol fuel flowing through the intake passage comes into contact with the honeycomb reactor disc, and the alcohol absorbs heat and is thermally decomposed into hydrogen and carbon monoxide, thereby being reformed.

In this case, in order to effectively utilize the thermal energy of the exhaust gas as energy for reforming the alcohol fuel, the rotation direction of the honeycomb reactor disk is changed so that the rotation direction of the honeycomb reactor disk passes through the exhaust passage, then the intake passage, and finally the intake passage. The air-fuel mixture is set in a direction passing through the air passage, and the air-fuel mixture flowing through the intake air passage is rubbed into an alcohol-rich mixture with reduced intake air. That is, the portion of the honeycomb reactor disc heated by the exhaust gas is not cooled by the intake air, and can effectively act on the alcohol fuel in the rich mixture flowing through the intake passage. That is, the rich mixture of alcohol fuel flowing through the intake passage comes into contact with the honeycomb reactor disk, and the alcohol absorbs heat from the honeycomb reactor disk and is thermally decomposed into hydrogen and carbon monoxide and reformed. Therefore, the ripening energy of the exhaust gas is consumed as alcohol reforming energy, and the exhaust gas energy is recovered.
Therefore, it contributes to improving fuel efficiency.

Moreover, a single cylinder exhaust pipe lacks the heat energy of the exhaust gas, but a single exhaust pipe where the exhaust pipes of each cylinder are assembled has enough exhaust gas energy, which effectively works to reform alcohol fuel. be able to. In addition, the catalyst coated on the honeycomb reactor disc generally has a heat resistance temperature of about 600°C, so if the exhaust gas temperature becomes high during high speed and high load of the engine, the amount of intake air from the air passage will decrease. The heat resistance of the catalyst can be improved by increasing the air-fuel ratio and lowering the temperature by diluting the air-fuel ratio and cooling the honeycomb reactor disk with the intake air.

Also, when the engine is running at high speed and under high load, the exhaust gas is 150
Since the temperature reaches 0° C., the thermal energy of the exhaust gas is balanced with the thermal decomposition of alcohol, and the thermal energy can be fully utilized. For example, the calorific value of methanol is 5400Kc
If it is aluminum, the amount of heat transferred to the wall is approximately 1500
It is Kcal. The amount of heat required for surface modification is 600Kc.
Since it is al, it is possible to supply the thermal energy necessary for reforming methanol. Therefore, thermal energy can be recovered from the exhaust gas exhausted from the adiabatic engine.

Alternatively, the alcohol reforming engine includes a honeycomb reactor disk that crosses an intake passage, an exhaust passage, and an air passage for a mixture of alcohol fuel and air to exchange heat with a fluid and reform the fuel; a fuel injection nozzle and an air-fuel ratio control valve arranged in the intake passage, an air-fuel ratio control valve that controls the flow rate of the air passage, a motor that rotationally drives the disc;
A sensor detects the operating state of the engine, and in response to the detection signal of the sensor, determines the amount of fuel injection and each of the above-mentioned controls. IO
Since the controller is configured to control the opening degree of the valve, the air-fuel ratio can be controlled to an optimum state depending on the operating state of the engine, for example, when the engine is at high speed and under high load or when it is at low speed and under low load. That is, when the engine is running at high speed and under high load, the exhaust gas temperature rises, but in response to a detection signal in which the value detected by the sensor is equal to or higher than a predetermined temperature, the air-fuel ratio control valve in the air passage is opened to lean the air-fuel ratio. The problem of heat resistance of the catalyst of the honeycomb reactor disk can be solved, and the durability of the honeycomb reactor disk can be improved. Furthermore, when the engine is running at low speed and under low load, the exhaust gas temperature is below the activation temperature of the catalyst, so the air passage is closed or partially opened to control the air-fuel ratio to a normal state, and the alcohol fuel 4 is reformed. to ensure good combustion.

Furthermore, the motor that rotationally drives the honeycomb reactor disk,
By synchronizing with the engine speed,
Heat exchange efficiency can be improved.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view schematically showing an embodiment of an alcohol reforming engine according to the present invention, and FIG. Figure 3 shows an embodiment of an alcohol reforming engine according to the present invention, and shows the line ■-- in Figure 1.
The sectional view at 3 and FIG. 4 are process flow diagrams showing one embodiment of the operation of the alcohol reforming engine according to the present invention. 2-------Intake passage, 3-------Exhaust passage, 4-
-----Air passage, 5-----Motor, 6.7--
-----Air-fuel ratio control valve, 8--Fuel injection pump, 9
-・-Fuel injection nozzle, controller, honeycomb reactor disk, 7 rotation sensor, temperature sensor, 9 load sensor dispatcher chair!゛Automobile Co., Ltd.

Claims (4)

[Claims] (1) An intake passage through which a mixture of alcohol fuel and intake air flows, an exhaust passage through which exhaust gas flows, an air passage through which intake air flows, and a system that crosses each of the passages to exchange heat with the fluid and reform the fuel. 1. An alcohol reforming engine comprising: a honeycomb reactor disc for producing alcohol; a fuel injection nozzle disposed in the intake passage upstream of the disc for injecting the alcohol fuel; and a motor for rotationally driving the disc. (2) The alcohol reforming engine according to claim 1, wherein the honeycomb reactor disc comprises a honeycomb body made of a ceramic material and a catalyst coated on the surface of the honeycomb body. (3) A honeycomb reactor disk for exchanging heat with the fluid and reforming the fuel by crossing the intake passage, exhaust passage, and air passage for a mixture of alcohol fuel and air, and disposed in the intake passage. A fuel injection nozzle and an air-fuel ratio control valve, an air-fuel ratio control valve that controls the flow rate of the air passage, a motor that rotationally drives the disk, a sensor that detects the operating state of the engine, and a sensor that detects the operating state of the engine, and a sensor that responds to the detection signal of the sensor. An alcohol reforming engine comprising a controller that controls the fuel injection amount and the opening degree of each of the control valves. (4) The controller performs control to open the air-fuel ratio control valve of the air passage to dilute the air-fuel ratio in response to a detection signal in which the detected value by the sensor is equal to or higher than a predetermined temperature. Alcohol reforming engine as described.