CN201025173Y - Methanol-hydrogen combined fuel engine - Google Patents
Methanol-hydrogen combined fuel engine Download PDFInfo
- Publication number
- CN201025173Y CN201025173Y CNU2007200953489U CN200720095348U CN201025173Y CN 201025173 Y CN201025173 Y CN 201025173Y CN U2007200953489 U CNU2007200953489 U CN U2007200953489U CN 200720095348 U CN200720095348 U CN 200720095348U CN 201025173 Y CN201025173 Y CN 201025173Y
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- Prior art keywords
- methanol
- engine
- exhaust gas
- hydrogen
- fuel
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 41
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 41
- 239000000446 fuel Substances 0.000 title claims abstract description 35
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 192
- 238000005336 cracking Methods 0.000 claims abstract description 31
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000007789 gas Substances 0.000 claims abstract description 23
- 230000001105 regulatory effect Effects 0.000 claims abstract description 7
- 239000002828 fuel tank Substances 0.000 claims abstract description 6
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract 5
- 239000001301 oxygen Substances 0.000 claims abstract 5
- 229910052760 oxygen Inorganic materials 0.000 claims abstract 5
- 238000002485 combustion reaction Methods 0.000 abstract description 12
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000003054 catalyst Substances 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 7
- 150000002431 hydrogen Chemical class 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 238000007233 catalytic pyrolysis Methods 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 5
- 239000003502 gasoline Substances 0.000 description 5
- 230000030279 gene silencing Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000002101 lytic effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000004230 steam cracking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Output Control And Ontrol Of Special Type Engine (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
本实用新型公开了一种以甲醇－氢为组合燃料的发动机。包括发动机本体、尾气净化器、消声器、甲醇燃料箱、甲醇泵等。尾气净化器与消声器之间串接一个裂解反应器，裂解出的氢气接至发动机的进气系统。甲醇燃料箱中的燃料一路直接供给裂解反应器，另一路以串接方式通过甲醇泵、甲醇燃料轨及喷嘴达发动机的进气系统。发动机本体与尾气净化器之间设有氧传感器作为燃烧信号反馈，氧传感器和传感器组的信号接至电控单元，由电控单元控制甲醇喷嘴、调节阀、进气预热装置、点火线圈及甲醇泵的工作状态。本实用新型的特点是采用发动机排气作为循环供热载体，甲醇蒸汽在专用催化剂上裂解和转化一步完成，能够有效的保护环境，使发动机尾气排放达到环保指标。
The utility model discloses an engine using methanol-hydrogen as combined fuel. Including engine body, exhaust gas purifier, muffler, methanol fuel tank, methanol pump, etc. A cracking reactor is connected in series between the exhaust gas purifier and the muffler, and the cracked hydrogen is connected to the intake system of the engine. One way of the fuel in the methanol fuel tank is directly supplied to the cracking reactor, and the other way is connected in series to the intake system of the engine through the methanol pump, methanol fuel rail and nozzle. An oxygen sensor is installed between the engine body and the exhaust gas purifier as combustion signal feedback, the signals of the oxygen sensor and the sensor group are connected to the electronic control unit, and the electronic control unit controls the methanol nozzle, regulating valve, intake air preheating device, ignition coil and The working status of the methanol pump. The utility model is characterized in that the engine exhaust gas is used as the circulating heat supply carrier, and the cracking and conversion of the methanol vapor is completed in one step on the special catalyst, which can effectively protect the environment and make the exhaust gas emission of the engine reach the environmental protection index.
Description
Technical field
The utility model belongs to substitute Fuel of Internal Combustion Engine, and being specifically related to a kind of is the motor of composite fuel with the methanol-hydrogen.
Background technique
Along with the anxiety of the energy and the people reinforcement to atmospheric environment protection consciousness, the motor fuel of seeking high-efficiency cleaning becomes one of major issue in the internal-combustion engine technology.Alcohol is as clean alternative fuel, and is in liberal supply at present, and price is suitable.Thereby single from economic analysis, what motor use methyl alcohol will be good than use gasoline Economy is many.From technical development, the methanol decomposition hydrogen producing technology is used widely in industries such as chemical industry, metallurgy, oil.At current outstanding environmental problem, necessary the methanol decomposition hydrogen producing technology is applied in motor energy-conservation.Obtain by retrieval Chinese patent abstract database, at digest " the automotive residual heat schizolysis hydrogen production plants of environmental protection and energy saving " (searching number: propose a kind of technology CN2485438), the auxiliary electro-heat bolt is distributed in the cracking room, owing to adopted the auxiliary electro-heat bolt, motor is when the low temperature low cruise, and the logical heating of electric heating bolt raises cracking temperature rapidly, with crossing employing center short circuit pipe shunting mode, and can control automatically and make the cracking temperature can be not too high.In patent " the engine producing hydrogen with remainder heat " (patent No.: also propose a kind of technology ZLO1221486.8), promptly utilize the waste heat of engine exhaust, the alcohol catalysis cracking of liquid state is become the hydrogen of gaseous state, again with its with enter the cylinder internal combustion after gasoline mixes, realize alcohol---hydrogen is for combustion, lean combustion, improve the energy source power, reduce the pollution of engine emission atmosphere environment.These measures are a kind of new methods for improvement combustion in IC engine effect.But have following shortcoming: because delivery temperature is low, and directly cracking alcohol is produced hydrogen, this moment, motor must use gasoline during (1) engine cold-start; (2) the hydrogen mixed gas of cracking can not satisfy the requirement of motor high load working condition, promptly burns when motor still need adopt gasoline and hydrogen fellowship when middle high load working condition moves, and this will make engine control system complicated; (3) vehicle need be provided with methyl alcohol, two fuel tanks of gasoline, and is very inconvenient.
Given this, in the key technology of alcohol (hydrogen) Dai Ran, the utility model proposes a kind of new technology, it does not need the original structure of motor is done big change, as long as a cover lytic response apparatus is set on vent systems, and on motor, install a cover centralized control system additional, and just can utilize engine exhaust heat, the alcohols catalytic pyrolysis is produced hydrogen, the generation combustion is energy-conservation, reduces pollution emissions.
Summary of the invention
The purpose of this utility model is that proposing a kind of is the motor of composite fuel with the methanol-hydrogen, utilize the exhaust heat of motor that methyl alcohol catalytic pyrolysis in cracking reactor is produced hydrogen, then hydrogen is introduced motor and burn, to reach the purpose that reduces pollution emissions as fuel.
Below in conjunction with accompanying drawing know-why of the present utility model is described.The utility model is to utilize the exhaust heat of motor with methyl alcohol catalytic pyrolysis in cracking reactor, produces hydrogen, then hydrogen is introduced engine combustion.When motor is in the state of cold machine startup, directly burning methanol operation of motor, treat exhaust with cracking reactor be heated to temperature required after, the control system of motor automatically switches to the fuel of hydrogen cracking gas as motor, thereby realizes the methanol-hydrogen combination of engine combustion.Methanol-hydrogen compounded fuel engine mainly comprises engine body 1, exhaust purifier 2, silencing apparatus 3, methanol fuel case 4, methanol pump 5, pressure regulator valve 6, methanol fuel rail 7, methyl alcohol nozzle 8, flow control valve 9, lambda sensor 10, cracking reactor 11, gas handling system 12, engine condition sensor group 13, control system 14, air-intake heating mechanism 15 and spark coil 16 etc.Constitute the methanol fuel supply system of motor by methanol pump 5, pressure regulator valve 6, methanol fuel rail 7, methyl alcohol nozzle 8.Constitute the vent systems (frame of broken lines among the figure) of engine exhaust by exhaust purifier 2, cracking reactor 11, silencing apparatus 3, cracking reactor 11 is serially connected between exhaust purifier 2 and the silencing apparatus 3, and its exhaust airstream inlet exports close-coupled with the exhaust airstream of exhaust purifier 2.Exhaust heat by exhaust purifier 2 flow outlets produces hydrogen with methyl alcohol catalytic pyrolysis in cracking reactor 11, the hydrogen that cracking goes out is connected to the gas handling system 12 supply engines burning of engine body 1 by the road, constitutes methanol fuel cracking gas (hydrogen) supply system of motor thus.Methanol fuel in the methanol fuel case 4 divides the two-way supply: the one tunnel through flow control valve 9 supply cracking reactors 11, are cracked into the gas handling system 12 that hydrogen arrives at engine body 1 in reactor; The methanol fuel on another road arrives at the gas handling system 12 of engine body 1 through methyl alcohol nozzle 8 by methanol pump 5, pressure regulator valve 6, methanol fuel rail 7 in the serial connection mode.On the gas-entered passageway of gas handling system 12, be provided with air-intake heating mechanism 15.The sensor groups of being made up of the sensor of various perception engine behaviors 13 (sensor groups comprises: crankshaft position sensor, speed probe, air inlet pressure sensor, throttle position sensor, cooling-water temperature transmitter, fuel gas temperature sensor, gaseous-pressure sensor) is housed on engine body 1.Be provided with lambda sensor 10 as feedback signal between engine body 1 and the exhaust purifier 2, the output signal of lambda sensor 10 and sensor groups 13 is connected to the signal input part of ECU (Electrical Control Unit) 14.The output terminal of ECU (Electrical Control Unit) 14 is by the working state of signaling line control methanol pump 5, methyl alcohol nozzle 8, flow control valve 9, air-intake heating mechanism 15 and spark coil 16.System adopts air inlet heating device 15 to its objective is the fogging degree that improves methanol fuel, makes burning more abundant.Adopt the delivery volume of flow control valve 9 control methyl alcohol, make dissociated methanol gas satisfy the requirement of Under Different Work Condition of Engine to cracking reactor 11.
Methanol decomposition hydrogen manufacturing principle:
(1) methyl alcohol by catalyzer, is cracked into carbon monoxide and hydrogen under 280～350 ℃ of temperature.Reaction equation is as follows: CH
3OH → CO+3H
2
(2) carbon monoxide and hydrogen are discharged carbon dioxide and water in the acting of engine air in-cylinder combustion.Reaction equation is as follows:
2CO+O
2→2CO
2；2H
2+O
2→2H
2O。
Description of drawings
Accompanying drawing is methanol-hydrogen compounded fuel engine critical piece and control wiring connection diagram thereof.
Among the figure: the signaling line and the control wiring of → expression control system;---→ expression methyl alcohol is supplied with route;--→ expression cracking gas air inlet route; The mixed gas of → expression air and fuel;
Expression exhausting waste gas route.
Embodiment
Below by specific embodiment know-why of the present utility model is further described.By shown in the accompanying drawing each parts being assembled.Cracking reactor 11 is installed in the pipeline between exhaust purifier 2 and the silencing apparatus 3, the exhaust airstream outlet close-coupled of its exhaust airstream inlet and exhaust purifier 2.By the lambda sensor 10 that is provided with on vent systems, the inflammable mixture concentration of monitoring combustion process is regulated control as feedback signal by the delivery volume of 14 pairs of pure fuel of ECU (Electrical Control Unit).The working procedure of methanol-hydrogen compounded fuel engine is to supply with the inflammable mixture of variable concentrations (is measurement index with the air excess factor), to realize the requirement of Under Different Work Condition of Engine.At first, during engine cold-start, because there is not exhaust heat, thus can not cracking hydrogen production, ECU (Electrical Control Unit) 14 control methyl alcohol nozzles 8 sprayed methanol fuels and entered engine chamber and burn this moment.Along with the rising of engine temperature, when delivery temperature reached 280 ℃, the part methyl alcohol of the high temperature of exhaust in can cracking reactor 11 produced hydrogen, and this moment, supply engine carried out the mixture that burnt fuel is methyl alcohol and hydrogen---and alcohol and hydrogen mixed.Along with the carrying out of burning when engine exhaust temperature surpasses 350 ℃, promptly be able to cracking when going out a large amount of hydrogen, ECU (Electrical Control Unit) 14 will be cut off pure fuel injection branch road automatically, realize pure hydrogen burning.
Whole process methanol decomposition thermomechanics is as follows:
Methyl alcohol is having under the condition of catalyzer 350 ℃ by following reaction equation cracking: CH
3OH → CO+2H
2
Every mol methyl alcohol has absorbed the waste heat of vehicle exhaust, is vaporized into 350 ℃ steam from the liquid heating of normal temperature, and the heat content increment is: 156 (64.51-25)+35000+106 (350-64.51)=71.4kJ/mol
Behind the 1mol methanol decomposition, produce the carbon monoxide of 1mol and the hydrogen of 2mol.Its calorific value increases to:
CO+1/2O
2→CO
2，ΔH＝284.7kJ/mol；H
2+1/2O
2→H
2O，ΔH＝242.6kJ/mol。
Every mol methyl alcohol is by after the catalytic pyrolysis, and the increment of its heat content is:
(248.7+2×242.6+71.4)-726.55＝78.8kJ/mol
Embodiment utilizes the cracking gas of engine tail gas waste-heat dissociated methanol generation as can be known thus, and its calorific value has improved 10.8% than the methyl alcohol of original homogenous quantities.
The beneficial effects of the utility model are: adopt engine exhaust as the circulation heating carrier, except satisfying technological requirement Outer and energy consumption is low, methanol steam cracking and transform a step and finishes on special-purpose catalyst. That special-purpose catalyst has is active high, Selectively good, serviceability temperature is low, the characteristics that the life-span is long. The utility model is protection of the environment effectively, makes engines tail The gas discharging reaches environmental protection index.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200953489U CN201025173Y (en) | 2007-02-27 | 2007-02-27 | Methanol-hydrogen combined fuel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200953489U CN201025173Y (en) | 2007-02-27 | 2007-02-27 | Methanol-hydrogen combined fuel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201025173Y true CN201025173Y (en) | 2008-02-20 |
Family
ID=39099034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200953489U Expired - Fee Related CN201025173Y (en) | 2007-02-27 | 2007-02-27 | Methanol-hydrogen combined fuel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201025173Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111197532A (en) * | 2020-01-09 | 2020-05-26 | 杰锋汽车动力系统股份有限公司 | Hydrogen/methanol composite fuel engine |
| CN119616733A (en) * | 2024-12-05 | 2025-03-14 | 华中科技大学 | Multi-injection system integrating methanol and pyrolysis gas |
-
2007
- 2007-02-27 CN CNU2007200953489U patent/CN201025173Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111197532A (en) * | 2020-01-09 | 2020-05-26 | 杰锋汽车动力系统股份有限公司 | Hydrogen/methanol composite fuel engine |
| CN119616733A (en) * | 2024-12-05 | 2025-03-14 | 华中科技大学 | Multi-injection system integrating methanol and pyrolysis gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080220 Termination date: 20130227 |