CN117345441A - Cold starting device and method for methanol engine - Google Patents
Cold starting device and method for methanol engine Download PDFInfo
- Publication number
- CN117345441A CN117345441A CN202311430005.3A CN202311430005A CN117345441A CN 117345441 A CN117345441 A CN 117345441A CN 202311430005 A CN202311430005 A CN 202311430005A CN 117345441 A CN117345441 A CN 117345441A
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- Prior art keywords
- methanol
- engine
- dimethyl ether
- output end
- reaction device
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Links
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 399
- 238000000034 method Methods 0.000 title claims description 10
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims abstract description 188
- 238000006243 chemical reaction Methods 0.000 claims abstract description 40
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 22
- 239000000446 fuel Substances 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000006297 dehydration reaction Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 4
- 238000010992 reflux Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 17
- 239000003502 gasoline Substances 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 4
- 239000002283 diesel fuel Substances 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 231100001223 noncarcinogenic Toxicity 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0639—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels
- F02D19/0649—Liquid fuels having different boiling temperatures, volatilities, densities, viscosities, cetane or octane numbers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/08—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed simultaneously using pluralities of fuels
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The invention discloses a cold starting device for a methanol engine, which comprises an engine, wherein a spark plug is arranged in the engine, the spark plug is connected with an ECU (electronic control unit), one side of the engine is provided with an air inlet manifold, the input end of the air inlet manifold is connected with a throttle valve, the other side of the engine is connected with an exhaust manifold, the engine is connected with a fuel supply system, the fuel supply system comprises a methanol tank, the output end of the methanol tank is connected with a reaction device and a methanol common rail, the output end of the reaction device is connected with a dimethyl ether storage tank, the output end of the dimethyl ether storage tank is connected with a pressure stabilizing valve, the pressure stabilizing valve is connected with a dimethyl ether common rail, the output end of the dimethyl ether common rail is connected with a plurality of dimethyl ether nozzles, the output end of the methanol common rail is connected with a plurality of methanol nozzles, the output end of the exhaust manifold is connected with an exhaust pipe, one side of the exhaust pipe is connected with a preheating component, and the other side of the preheating component is connected with the reaction device.
Description
Technical Field
The invention belongs to the technical field of internal combustion engines, and particularly relates to a cold start device and a cold start method for a methanol engine.
Background
Methanol is a low-carbon renewable clean energy source, is in a liquid state at normal temperature and normal pressure, is convenient to store and transport, and has better safety than gasoline; the anti-knock performance and emission of the fuel used as the engine fuel are better than those of gasoline, the compression ratio can be improved, the thermal efficiency of the engine is improved, and the discharged CO2 is used for regenerating methanol to realize carbon balance; the popularization and application of the methanol fuel engine have important significance and practical value for guaranteeing national energy safety. However, the vaporization latent heat of methanol is far higher than that of gasoline, so that the engine is difficult to start at a cold condition and a low temperature, and popularization and use are affected.
The existing methanol fuel engine usually adopts gasoline or diesel oil as a pilot fuel to solve the problem of difficult cold start, the vehicle must be filled with two fuels of methanol, gasoline or diesel oil at the same time, two sets of fuel supply systems are configured, the weight and cost of the vehicle are increased, the structural arrangement is complex, and more pollutant emission can be generated in the low-temperature cold start stage. The large-displacement engine consumes more gasoline or diesel oil when being started at each time, so that a user needs to frequently charge the gasoline or diesel oil, the use convenience is poor, and the inconvenience is brought to the user.
Disclosure of Invention
In view of the above-mentioned problems with the background art, the present invention has as its object: the cold start device and the cold start method for the methanol engine are provided.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
the utility model provides a be used for cold starting device of methyl alcohol engine, includes the engine, be equipped with the spark plug in the engine, the spark plug is connected with ECU automatically controlled unit, one side of engine is equipped with intake manifold, intake manifold's input is connected with the throttle valve, the opposite side of engine is connected with exhaust manifold, the engine is connected with fuel feed system, fuel feed system includes the methyl alcohol case, the output of methyl alcohol case is connected with reaction unit and methyl alcohol common rail, reaction unit's output is connected with the dimethyl ether holding vessel, the output of dimethyl ether holding vessel is connected with the steady voltage valve, the steady voltage valve is connected with the dimethyl ether common rail, the output of dimethyl ether common rail is connected with a plurality of dimethyl ether nozzles, the output of dimethyl ether nozzle is linked together with the engine, the output of methyl alcohol common rail is connected with a plurality of methyl alcohol nozzles, the output of methyl alcohol nozzle is linked together with the engine, exhaust manifold's output is connected with the blast pipe, one side of blast pipe is connected with preheating assembly, preheating assembly's opposite side is connected with reaction unit.
Further limited, two groups of methanol pumps and pressure relief reflux valves are arranged in the methanol tank, and are used for supplying methanol to the methanol common rail and the reaction device respectively and are connected with an ECU.
Further defined, the preheating assembly comprises a shunt pipe and a return pipe which are arranged on the exhaust pipe, one side of the shunt pipe is communicated with the exhaust pipe, the other side of the shunt pipe is communicated with the reaction device, and the shunt pipe is provided with a control valve.
Further limited, the ECU is connected with the dimethyl ether nozzle, the methanol nozzle, the pressure stabilizing valve and the control valve for control.
A starting method for a cold start device of a methanol engine, characterized by: the method comprises the following steps:
s1: when the heat engine of the methanol engine is in a working state, when the storage pressure in the dimethyl ether storage tank is less than 5bar, the control valve is opened, the tail gas of the split-flow part of the methanol engine is preheated by the split-flow pipe to the reaction device, after the preheating temperature exceeds 200 ℃, the methanol tank injects methanol into the reaction device,
s2: because the dimethyl ether generated by the dehydration reaction of the methanol is exothermic reaction, the temperature of the reaction device is not required to be maintained by continuously providing the heat of the tail gas, the tail gas is discharged from the exhaust pipe by closing the control valve, the dimethyl ether generated by the dehydration reaction of the methanol in the reaction device is unidirectionally sent to the dimethyl ether storage tank, when the pressure of the dimethyl ether storage tank reaches 6bar, the methanol is stopped from being added into the reaction device, and the dimethyl ether is stored in the dimethyl ether storage tank in a liquid state for standby;
s3: when the methanol engine is restarted after stopping, judging whether the water temperature of the engine is lower than 30 degrees (the temperature value is only used as an example, different engines are determined according to actual test results), and when the water temperature is higher than or equal to 30 degrees, the engine directly ignites and starts the injected methanol through a spark plug;
s4: when the water temperature of the engine is less than 30 degrees, the ECU firstly opens the pressure stabilizing valve to reduce the pressure and gasify the dimethyl ether, so that the dimethyl ether gas is conveyed to the dimethyl ether common rail through the pressure stabilizing valve, finally the dimethyl ether gas is sprayed into the engine from the dimethyl ether nozzle, the spark plug is ignited to start the engine, then the methanol nozzle is opened to spray the methanol, the methanol is conveyed to the methanol common rail through the methanol tank and finally sprayed out from the methanol nozzle, at the moment, the methanol is ignited by the dimethyl ether easy to ignite, and when the water temperature of the engine is more than or equal to 30 degrees, the pressure stabilizing valve and the dimethyl ether nozzle are closed through the ECU, the engine is started by the cold ignition of the dimethyl ether, and the normal heat engine operation is started.
The beneficial effects of the invention are as follows:
the invention utilizes the dehydration reaction of methanol to prepare and store dimethyl ether online, utilizes dimethyl ether as a pilot fuel, solves the problem of difficult cold start of a methanol engine, and the dimethyl ether is a colorless, non-virulent, non-carcinogenic and low-corrosivity product, the vapor pressure at normal temperature is 0.5MPa, and the saturated vapor pressure of the dimethyl ether is lower than that of liquefied gas at the same temperature, so that the storage and transportation are safer than that of the liquefied gas, and the dimethyl ether has the characteristics of easy compression, condensation and gasification; the invention is a fuel with high oxygen content, good combustion performance, high heat efficiency, NO residue, NO black smoke, low CO and NO discharge in the combustion process, full combustion, NO residual liquid and NO carbon precipitation, solves the problem of generating more exhaust pollutants in the low-temperature cold start stage of a methanol fuel engine, and can be prepared by a methanol dehydration reaction.
Drawings
The invention can be further illustrated by means of non-limiting examples given in the accompanying drawings;
FIG. 1 is a schematic diagram of a cold start apparatus for a methanol engine according to an embodiment of the present invention;
the main reference numerals are as follows:
the device comprises an ECU (electronic control unit) 1, an air inlet manifold 2, a throttle valve 3, a dimethyl ether common rail 4, a dimethyl ether nozzle 5, a methanol common rail 6, a methanol nozzle 7, a pressure stabilizing valve 8, a dimethyl ether storage tank 9, a reaction device 10, a methanol tank 11, an exhaust pipe 12, an exhaust manifold 13, an engine 14 and a spark plug 15.
Detailed Description
In order that those skilled in the art will better understand the present invention, the following technical scheme of the present invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1, a cold starting device for a methanol engine of the present invention is provided with a spark plug 15 in an engine 14, the spark plug 15 is connected with an ECU electric control unit 1, one side of the engine 14 is provided with an intake manifold 2, the input end of the intake manifold 2 is connected with a throttle valve 3, the other side of the engine 14 is connected with an exhaust manifold 13, the engine 14 is connected with a fuel supply system, the fuel supply system comprises a methanol tank 11, the output end of the methanol tank 11 is connected with a reaction device 10 and a methanol common rail 6, the output end of the reaction device 10 is connected with a dimethyl ether storage tank 9, the output end of the dimethyl ether storage tank 9 is connected with a pressure stabilizing valve 8, the pressure stabilizing valve 8 is connected with a dimethyl ether common rail 4, the output end of the dimethyl ether common rail 4 is connected with a plurality of dimethyl ether nozzles 5, the output end of the dimethyl ether nozzles 5 is communicated with the engine 14, the output end of the methanol common rail 6 is connected with a plurality of methanol nozzles 7, the output end of the methanol nozzles 7 is communicated with the engine 14, the output end of the exhaust manifold 13 is connected with an exhaust pipe 12, one side of the exhaust pipe 12 is connected with a preheating component, and the other side of the preheating component is connected with the reaction device 10.
Preferably, two groups of methanol pumps and pressure relief reflux valves are arranged in the methanol tank 11, and are respectively used for supplying methanol to the methanol common rail 6 and the reaction device 10 and are connected with the ECU electronic control unit 1.
The preferred preheating assembly comprises a shunt tube and a return tube which are arranged on the exhaust pipe 12, wherein one side of the shunt tube is communicated with the exhaust pipe 12, the other side of the shunt tube is communicated with the reaction device 10, and the shunt tube is provided with a control valve.
Preferably, the ECU (1) is connected with the dimethyl ether nozzle (5), the methanol nozzle (7), the pressure stabilizing valve (8) and the control valve for control.
In this embodiment, when the pressure in the dimethyl ether storage tank 9 is less than 5bar in the working state of the heat engine of the methanol engine, the control valve is opened, the tail gas of the split-flow part of the methanol engine is preheated by the split-flow pipe to the reaction device 10, after the preheating temperature exceeds 200 ℃, the methanol tank 11 injects methanol into the reaction device 10, as the dimethyl ether generated by the dehydration reaction of the methanol is exothermic, the temperature of the reaction device 10 is maintained without continuously providing tail gas heat, the control valve is closed to discharge the tail gas from the exhaust pipe 12, the dimethyl ether generated by the dehydration reaction of the methanol in the reaction device 10 is unidirectionally fed into the dimethyl ether storage tank 9, and when the pressure in the dimethyl ether storage tank 9 reaches 6bar, the injection of the methanol into the reaction device 10 is stopped, and the dimethyl ether is stored in the dimethyl ether storage tank 9 in a liquid state for standby.
When the methanol engine is restarted after stopping, firstly judging whether the water temperature of the engine is lower than 30 degrees (the temperature value is only used as an example, different engines are determined according to actual test results), and when the water temperature is higher than or equal to 30 degrees, the engine 14 directly ignites and starts the injected methanol through the spark plug 15; : when the water temperature of the engine is less than 30 degrees, the ECU electronic control unit 1 firstly opens the pressure stabilizing valve 8 to reduce the pressure and gasify the dimethyl ether, so that the dimethyl ether gas is conveyed to the dimethyl ether common rail 4 through the pressure stabilizing valve 8, finally the dimethyl ether gas is sprayed into the engine 14 from the dimethyl ether nozzle 5, the spark plug 15 is ignited to start the engine 14, then the methanol nozzle 7 is opened to spray the methanol, the methanol is conveyed to the methanol common rail 6 through the methanol tank 11, finally the methanol is sprayed out from the methanol nozzle 7, the methanol is ignited by the dimethyl ether easy to ignite, and when the water temperature of the engine is more than or equal to 30 degrees, the ECU electronic control unit 1 closes the pressure stabilizing valve 8 and the dimethyl ether nozzle 5, the engine is started by cold ignition of the dimethyl ether, and the normal heat engine operation is started.
A starting method for a cold start device of a methanol engine, characterized by: the method comprises the following steps:
s1: when the heat engine of the methanol engine is in a working state, and the storage pressure in the dimethyl ether storage tank 9 is less than 5bar, a control valve is opened, the tail gas of the methanol engine in the split flow part is preheated to the reaction device 10 through a split flow pipe, after the preheating temperature exceeds 200 ℃, the methanol tank 11 injects methanol into the reaction device 10,
s2: since the dimethyl ether generated by the dehydration reaction of the methanol is exothermic, the temperature of the reaction device 10 is not required to be maintained by continuously providing the heat of the tail gas, the tail gas is discharged from the exhaust pipe 12 by closing the control valve, the dimethyl ether generated by the dehydration reaction of the methanol in the reaction device 10 is unidirectionally sent to the dimethyl ether storage tank 9, when the pressure of the dimethyl ether storage tank 9 reaches 6bar, the methanol is stopped from being added to the reaction device 10, and the dimethyl ether is stored in a liquid state in the dimethyl ether storage tank 9 for standby;
s3: when the methanol engine is restarted after stopping, firstly judging whether the water temperature of the engine is lower than 30 degrees (the temperature value is only used as an example, different engines are determined according to actual test results), and when the water temperature is higher than or equal to 30 degrees, the engine 14 directly ignites and starts the injected methanol through the spark plug 15;
s4: when the water temperature of the engine is less than 30 degrees, the ECU electronic control unit 1 firstly opens the pressure stabilizing valve 8 to reduce the pressure and gasify the dimethyl ether, so that the dimethyl ether gas is conveyed to the dimethyl ether common rail 4 through the pressure stabilizing valve 8, finally the dimethyl ether gas is sprayed into the engine 14 from the dimethyl ether nozzle 5, the spark plug 15 is ignited to start the engine 14, then the methanol nozzle 7 is opened to spray the methanol, the methanol is conveyed to the methanol common rail 6 through the methanol tank 11, finally the methanol is sprayed out from the methanol nozzle 7, the methanol is ignited by the dimethyl ether easy to ignite, and when the water temperature of the engine is more than or equal to 30 degrees, the ECU electronic control unit 1 closes the pressure stabilizing valve 8 and the dimethyl ether nozzle 5, the engine is started by cold ignition of the dimethyl ether, and the normal heat engine operation is started.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims of this invention, which are within the skill of those skilled in the art, can be made without departing from the spirit and scope of the invention disclosed herein.
Claims (5)
1. The utility model provides a be used for cold starting device of methanol engine, includes engine (14), be equipped with spark plug (15) in engine (14), spark plug (15) are connected with ECU electrical control unit (1), one side of engine (14) is equipped with intake manifold (2), the input of intake manifold (2) is connected with throttle valve (3), the opposite side of engine (14) is connected with exhaust manifold (13), engine (14) are connected with fuel feed system, its characterized in that: the fuel supply system comprises a methanol tank (11), the output end of the methanol tank (11) is connected with a reaction device (10) and a methanol common rail (6), the output end of the reaction device (10) is connected with a dimethyl ether storage tank (9), the output end of the dimethyl ether storage tank (9) is connected with a pressure stabilizing valve (8), the pressure stabilizing valve (8) is connected with a dimethyl ether common rail (4), the output end of the dimethyl ether common rail (4) is connected with a plurality of dimethyl ether nozzles (5), the output end of the dimethyl ether nozzles (5) is communicated with an engine (14), the output end of the methanol common rail (6) is connected with a plurality of methanol nozzles (7), the output end of the methanol nozzles (7) is communicated with the engine (14), the output end of an exhaust manifold (13) is connected with an exhaust pipe (12), one side of the exhaust pipe (12) is connected with a preheating component, and the other side of the preheating component is connected with the reaction device (10).
2. A cold start device for a methanol engine as in claim 1, wherein: two groups of methanol pumps and pressure relief reflux valves are arranged in the methanol tank (11), and are used for respectively supplying methanol to the methanol common rail (6) and the reaction device (10) and are connected with the ECU (1).
3. A cold start device for a methanol engine as in claim 2, wherein: the preheating component comprises a shunt pipe and a return pipe which are arranged on the exhaust pipe (12), one side of the shunt pipe is communicated with the exhaust pipe (12), the other side of the shunt pipe is communicated with the reaction device (10), and the shunt pipe is provided with a control valve.
4. A cold start device for a methanol engine according to claim 3, characterized in that: the ECU (1) is connected with the dimethyl ether nozzle (5), the methanol nozzle (7), the pressure stabilizing valve (8) and the control valve for control.
5. A starting method for a cold start apparatus of a methanol engine according to any one of claims 1 to 4, characterized in that: the method comprises the following steps:
s1: when the heat engine of the methanol engine is in a working state, when the storage pressure in the dimethyl ether storage tank (9) is less than 5bar, a control valve is opened, tail gas of the methanol engine in a split part is preheated to the reaction device (10) through a split pipe, after the preheating temperature exceeds 200 ℃, methanol is injected into the reaction device (10) from the methanol tank (11),
s2: since the dimethyl ether generated by the dehydration reaction of the methanol is exothermic, the temperature of the reaction device (10) is not required to be maintained by continuously providing the heat of the tail gas, the tail gas is discharged from the exhaust pipe (12) by closing the control valve, the dimethyl ether generated by the dehydration reaction of the methanol in the reaction device (10) is unidirectionally sent to the dimethyl ether storage tank (9), when the pressure of the dimethyl ether storage tank (9) reaches 6bar, the injection of the methanol into the reaction device (10) is stopped, and the dimethyl ether is stored in a liquid state in the dimethyl ether storage tank (9) for standby;
s3: when the methanol engine is restarted after stopping, judging whether the water temperature of the engine is lower than 30 degrees (the temperature value is only used as an example, different engines are determined according to actual test results), and when the water temperature is higher than or equal to 30 degrees, the engine (14) directly ignites and starts the injected methanol through the spark plug (15);
s4: when the temperature of the water of the engine is less than 30 ℃, an ECU (1) firstly opens a pressure stabilizing valve (8) to reduce the pressure and gasify dimethyl ether, so that the dimethyl ether gas is conveyed to a dimethyl ether common rail (4) through the pressure stabilizing valve (8), finally the dimethyl ether gas is sprayed into an engine (14) from a dimethyl ether nozzle (5), the engine (14) is started by ignition of a spark plug (15), then the methanol nozzle (7) is opened to spray methanol, the methanol is conveyed to the methanol common rail (6) through a methanol tank (11), finally the methanol is sprayed out of the methanol nozzle (7), at the moment, the methanol is ignited by the dimethyl ether which is easy to ignite, and when the temperature of the water of the engine is more than or equal to 30 ℃, the ECU (1) closes the pressure stabilizing valve (8) and the dimethyl ether nozzle (5), and the engine is started by cold ignition of the dimethyl ether, and the normal operation of the heat engine is started.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311430005.3A CN117345441A (en) | 2023-10-31 | 2023-10-31 | Cold starting device and method for methanol engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311430005.3A CN117345441A (en) | 2023-10-31 | 2023-10-31 | Cold starting device and method for methanol engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117345441A true CN117345441A (en) | 2024-01-05 |
Family
ID=89357382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311430005.3A Pending CN117345441A (en) | 2023-10-31 | 2023-10-31 | Cold starting device and method for methanol engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117345441A (en) |
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2023
- 2023-10-31 CN CN202311430005.3A patent/CN117345441A/en active Pending
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