CN218882389U - Air intake system, methyl alcohol engine and vehicle of methyl alcohol engine - Google Patents
Air intake system, methyl alcohol engine and vehicle of methyl alcohol engine Download PDFInfo
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- CN218882389U CN218882389U CN202320028074.0U CN202320028074U CN218882389U CN 218882389 U CN218882389 U CN 218882389U CN 202320028074 U CN202320028074 U CN 202320028074U CN 218882389 U CN218882389 U CN 218882389U
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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
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- Y02T10/12—Improving ICE efficiencies
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Abstract
The utility model relates to the technical field of vehicles, and discloses an air inlet system of a methanol engine, the methanol engine and a vehicle, the air inlet system of the methanol engine comprises an air inlet manifold, a valve component and a methanol nozzle component, wherein, the air inlet manifold comprises a pipe body and a heat conduction mounting platform arranged on the outer wall of the pipe body, the methanol nozzle component is a heat conduction structure, the methanol nozzle component is fixed on the heat conduction mounting platform, and a methanol spray outlet of the methanol nozzle component is communicated with the inner cavity of the pipe body; the heat conduction mounting table is provided with a heating channel; the air inlet of the valve component is communicated with the waste gas outlet of the methanol engine, the air outlet of the valve component is communicated with the heating channel, and the valve component is used for controlling the communication state between the waste gas outlet of the methanol engine and the heating channel. The air inlet system of the methanol engine, the methanol engine and the vehicle improve the problems of difficult cold start and poor low-temperature combustion performance of the methanol engine.
Description
Technical Field
The utility model relates to a vehicle technical field, in particular to air intake system, methyl alcohol engine and vehicle of methyl alcohol engine.
Background
Methanol, a clean energy source, has grown to be used in commercial vehicles against the background of increasingly stringent emission regulations and scarcity of fossil fuels. Methanol fuels also have their limitations, such as: methanol has large vaporization latent heat and high ignition temperature compared with diesel oil. This causes difficulty in cold start of the methanol engine and poor low-temperature combustion performance, and when the methanol engine is cold started in a low-temperature environment, low-temperature combustion generates a large amount of SOOT and HC that cannot be oxidized, resulting in low in-cylinder combustion thermal efficiency and large aftertreatment load.
SUMMERY OF THE UTILITY MODEL
The utility model provides a methanol engine's air intake system, methanol engine and vehicle can improve the relatively poor problem of methanol engine cold start difficulty, low temperature combustion performance.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the air inlet system of the methanol engine comprises an air inlet manifold, a valve assembly and a methanol nozzle assembly, wherein the air inlet manifold comprises a pipe body and a heat conduction mounting table arranged on the outer wall of the pipe body, the methanol nozzle assembly is of a heat conduction structure, the methanol nozzle assembly is fixed on the heat conduction mounting table, and a methanol spray outlet of the methanol nozzle assembly is communicated with an inner cavity of the pipe body;
the heat conduction mounting table is provided with a heating channel; the gas inlet of the valve assembly is communicated with a waste gas outlet of the methanol engine, the gas outlet of the valve assembly is communicated with the heating channel, and the valve assembly is used for controlling the communication state between the waste gas outlet of the methanol engine and the heating channel.
In this scheme, methyl alcohol nozzle assembly and the mount table homoenergetic that is used for installing methyl alcohol nozzle assembly are heat conduction, and simultaneously, the valve module can control the exhaust outlet of methyl alcohol engine and the connected state between the heating channel. Therefore, when the methanol engine is in cold start, the exhaust gas outlet of the methanol engine can be communicated with the heating channel through the valve component, so that the methanol nozzle component can be heated outside the pipe body through high-temperature exhaust gas of the methanol engine, the methanol fuel atomization effect is improved, the methanol fuel in the combustion chamber is fully combusted, the combustion thermal efficiency in a cylinder in cold start is improved, the generation of non-oxidizable SOOT and HC caused by low-temperature combustion of the methanol is greatly reduced, and the load of an after-treatment system is reduced; meanwhile, the content of noble metal in a methanol engine post-treatment system can be reduced, and the cost is reduced.
Optionally, the opening of the valve assembly is adjustable.
Optionally, the valve assembly includes a solenoid valve, an air inlet of the solenoid valve is communicated with an exhaust gas outlet of the methanol engine, and an air outlet of the solenoid valve is communicated with an air inlet of the heating passage.
Optionally, the thermally conductive mount is a metal mount.
Optionally, the methanol nozzle assembly is a metal nozzle assembly.
The utility model also provides a methanol engine, the air intake system of any one methanol engine who provides in engine body and the above-mentioned technical scheme, the engine body have the combustion chamber and with the inlet channel that the combustion chamber corresponds, inlet manifold with the inlet channel intercommunication. The methanol engine can improve the atomization effect of the methanol fuel, fully combust the methanol fuel in the combustion chamber, improve the combustion heat efficiency in a cylinder during cold start, greatly reduce the generation of unoxidizable SOOT and HC caused by low-temperature combustion of the methanol and reduce the burden of an after-treatment system; meanwhile, the content of noble metals in a methanol engine post-treatment system can be reduced, and the cost is reduced.
Optionally, the methanol engine comprises an exhaust pipe and a turbocharger, wherein an air inlet of the exhaust pipe is communicated with an exhaust gas outlet of the methanol engine, and an air outlet of the exhaust pipe is communicated with a vortex-end air inlet of the turbocharger;
and the air inlet of the valve assembly is communicated with the exhaust pipe, and the air outlet of the heating channel is communicated with the exhaust gas outlet of the turbocharger.
Optionally, when the opening degree of the valve assembly is adjustable, the methanol engine includes a first temperature sensor for detecting a temperature of the mixture gas in the intake manifold, and an electronic control unit, and both the valve assembly and the first temperature sensor are electrically connected to the electronic control unit.
Optionally, the methanol engine comprises a second temperature sensor electrically connected to the electronic control unit, the second temperature sensor being configured to detect a gas temperature at the gas outlet of the exhaust pipe.
The utility model also provides a vehicle, an arbitrary methanol engine who provides in automobile body and above-mentioned technical scheme, methanol engine install in the automobile body. The vehicle can improve the methanol fuel atomization effect, fully combust the methanol fuel in the combustion chamber, improve the combustion heat efficiency in a cylinder during cold start, greatly reduce the generation of non-oxidizable SOOT and HC caused by low-temperature combustion of the methanol and reduce the burden of an after-treatment system; meanwhile, the content of noble metal in a methanol engine post-treatment system can be reduced, and the cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a methanol engine according to an embodiment of the present invention, in which a-type arrow indicates a flow path of air and methanol fuel, a B-type arrow indicates a flow path of exhaust gas of the methanol engine, and a C-type arrow indicates a path of an electrical signal;
fig. 2 is a partial structural sectional view of an air intake system of a methanol engine according to an embodiment of the present invention;
fig. 3 is a schematic view of a partial structure of an air intake system of a methanol engine according to an embodiment of the present invention.
Icon: 1-an intake manifold; 11-a tube body; 12-a thermally conductive mounting table; 121-a heating channel; 122-mounting through holes; 2-a valve assembly; 3-a methanol nozzle assembly; 4-an exhaust pipe; 5-a turbocharger; 6-a first temperature sensor; 7-an electronic control unit; 8-combustion chamber.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the related art, when the methanol engine is combusted at a low temperature, there are two heating methods, one is a plug-in heater installed in an intake manifold, and this causes a drop in intake pressure, which results in a deterioration in the gasification effect of methanol injected in the cylinder and, to a certain extent, further deterioration in combustion. The other mode is that the methanol fuel is directly preheated before entering the cylinder, but the methanol fuel has the characteristics of corrosion and swelling, and the direct heating of the methanol fuel can aggravate the corrosion and swelling and often cause the blockage of an engine injection system.
Fig. 1 is a schematic structural diagram of a methanol engine provided in this embodiment, fig. 2 is a sectional view of a partial structure of an air intake system of the methanol engine provided in this embodiment, fig. 3 is a schematic partial structural diagram of the air intake system of the methanol engine provided in this embodiment, as shown in fig. 1 to fig. 3, the air intake system of the methanol engine includes an air intake manifold 1, a valve assembly 2, and a methanol nozzle assembly 3, wherein the air intake manifold 1 includes a pipe body 11 and a heat conduction mounting table 12 disposed on an outer wall of the pipe body 11, the methanol nozzle assembly 3 is a heat conduction structure, and the methanol nozzle assembly 3 is fixed to the heat conduction mounting table 12, and a methanol ejection port of the methanol nozzle assembly 3 is communicated with an inner cavity of the pipe body 11 to inject methanol fuel into the inner cavity of the pipe body 11. Specifically, the heat conducting mounting table 12 is provided with a heating channel 121; the air inlet of the valve assembly 2 is communicated with the exhaust gas outlet of the methanol engine, the air outlet of the valve assembly 2 is communicated with the heating channel 121, and the valve assembly 2 is used for controlling the communication state between the exhaust gas outlet of the engine and the heating channel 121. In this scheme, methanol nozzle assembly 3 and the mount table that is used for installing methanol nozzle assembly 3 all can conduct heat, and simultaneously, valve module 2 can control the communicating state between methanol engine's exhaust outlet and heating channel 121. Therefore, when the methanol engine is cold-started, the exhaust gas outlet of the methanol engine can be communicated with the heating channel 121 through the valve assembly 2, so that the methanol nozzle assembly 3 can be heated outside the pipe body 11 through the high-temperature exhaust gas of the methanol engine, the methanol fuel atomization effect is improved, the methanol fuel in the combustion chamber 8 is fully combusted, the combustion heat efficiency in a cylinder during cold start is improved, the generation of non-oxidizable SOOT and HC caused by low-temperature combustion of the methanol is greatly reduced, and the burden of an after-treatment system is reduced; meanwhile, the content of noble metal in a methanol engine post-treatment system can be reduced, and the cost is reduced.
When the methanol nozzle assembly 3 is fixed on the heat-conducting mounting table 12, in an optional implementation manner, the heat-conducting mounting table 12 is provided with a mounting through hole 122, and the methanol nozzle assembly 3 is fixedly arranged in the mounting through hole 122.
While the valve assembly 2 controls the communication state between the exhaust gas outlet of the methanol engine and the heating channel 121, in an alternative implementation, the valve assembly 2 controls whether the exhaust gas outlet of the methanol engine is communicated with the heating channel 121.
In another alternative implementation, the valve assembly 2 controls the degree of communication between the exhaust gas outlet of the methanol engine and the heating channel 121, i.e., the opening degree of the valve assembly 2 can be adjusted. Obviously, when the valve assembly 2 is opened to the maximum, the exhaust gas outlet of the methanol engine is completely communicated with the heating channel 121; when the opening degree of the valve component 2 is minimum, the waste gas outlet of the methanol engine is not communicated with the heating channel 121; the larger the opening degree of the valve assembly 2 is, the more the exhaust gas from the methanol engine exhaust gas outlet to the heating passage 121 in the same period of time is. At this moment, the opening degree of the valve assembly 2 can be adjusted according to actual needs, so that the methanol atomization effect is better.
For example, the valve assembly 2 may include a solenoid valve, an inlet of which communicates with an exhaust gas outlet of the methanol engine, and an outlet of which communicates with the heating passage 121.
When specifically setting up above-mentioned heat conduction mount table 12, heat conduction mount table 12 can be the metal mount table to when guaranteeing structural strength, play good direction effect. Of course, the material of the heat conducting mounting table 12 is not limited to metal, and may be other heat conducting materials meeting the strength requirement.
When specifically setting up above-mentioned methyl alcohol nozzle assembly 3, in an optional implementation, methyl alcohol nozzle assembly 3 is metal nozzle assembly to when guaranteeing structural strength, play good guide effect. Of course, the material of the methanol nozzle assembly 3 is not limited to metal, and may be other heat conductive materials meeting the strength requirement.
The methanol engine provided by the embodiment comprises an engine body and an air inlet system of the methanol engine, wherein the engine body is provided with a combustion chamber 8 and an air inlet channel corresponding to the combustion chamber 8, and the air inlet channel is used for introducing air and methanol fuel into the combustion chamber 8. The intake manifold 1 described above communicates with this intake passage. In this scheme, methanol nozzle assembly 3 and the mount table that is used for installing methanol nozzle assembly 3 all can conduct heat, and simultaneously, valve module 2 can control the communicating state between methanol engine's exhaust outlet and heating channel 121. Therefore, when the methanol engine is cold-started, the exhaust gas outlet of the methanol engine can be communicated with the heating channel 121 through the valve assembly 2, so that the methanol nozzle assembly 3 can be heated outside the pipe body 11 through the high-temperature exhaust gas of the methanol engine, the methanol fuel atomization effect is improved, the methanol fuel in the combustion chamber 8 is fully combusted, the combustion heat efficiency in a cylinder during cold start is improved, the generation of non-oxidizable SOOT and HC caused by low-temperature combustion of the methanol is greatly reduced, and the burden of an after-treatment system is reduced; meanwhile, the content of noble metal in a methanol engine post-treatment system can be reduced, and the cost is reduced.
In a specific implementation mode, the methanol engine comprises an exhaust pipe 4 and a turbocharger 5, wherein an air inlet of the exhaust pipe 4 is communicated with an exhaust gas outlet of the methanol engine, and an air outlet of the exhaust pipe 4 is communicated with an air inlet at a vortex end of the turbocharger 5. The inlet of the valve assembly 2 communicates with the exhaust pipe 4, and the outlet of the heating passage 121 communicates with the exhaust gas outlet of the turbocharger 5.
When the opening degree of the valve assembly 2 in the air intake system of the methanol engine can be adjusted, in an alternative implementation mode, the methanol engine comprises a first temperature sensor 6 and an electronic control unit 7ECU, the first temperature sensor 6 is used for detecting the temperature of the mixed gas in the air intake manifold 1, and the valve assembly 2 and the first temperature sensor 6 are both electrically connected with the electronic control unit 7. The position where the first temperature sensor 6 is disposed may be set according to actual needs as long as detection of the temperature of the mixture gas in the intake manifold 1 is enabled.
In another implementation, the methanol engine includes a second temperature sensor electrically connected to the electronic control unit 7, and the second temperature sensor is configured to detect a gas temperature at the gas outlet of the exhaust pipe 4. Specifically, a map of the opening degree of the valve assembly 2 and both the pre-vortex exhaust gas temperature (i.e., the gas temperature at the gas outlet of the exhaust pipe 4) and the mixed gas temperature in the pipe body 11 of the intake manifold 1 can be obtained in advance through virtual calibration and stored in the ECU of the electronic control unit 7, so that the opening degree of the lower valve assembly 2 can be determined by both the pre-vortex exhaust gas temperature and the mixed gas temperature in the pipe body 11 of the intake manifold 1 at the same time.
The operation principle of the methanol engine provided in the present embodiment will be briefly described below.
When the methanol engine is started, the first temperature sensor 6 detects the temperature in the pipe body 11 of the intake manifold 1 (for convenience of description, the temperature is recorded as a first temperature), and transmits the temperature data to the ECU, and the ECU judges whether the first temperature is lower than a first preset temperature value; if the first temperature is lower than the first preset temperature value, the valve assembly 2 is opened, and the high-temperature pre-vortex exhaust gas enters the heating channel 121 of the heat conducting mounting table 12 of the intake manifold 1 through the valve assembly 2 to heat the methanol nozzle assembly 3 through heat conduction.
The first temperature sensor 6 monitors the temperature of the mixed gas in the pipe body 11 of the intake manifold 1 in real time, the temperature data is transmitted to the ECU, and when the ECU judges that the temperature of the mixed gas in the pipe body 11 of the intake manifold 1 reaches a preset upper limit value, the ECU controls the valve component 2 to be closed, so that engine knocking caused by overhigh intake temperature is avoided. Illustratively, when the ECU determines that the temperature inside the pipe body 11 of the intake manifold 1 reaches a preset upper limit value, the ECU transmits a low level signal to the valve assembly 2 to close the valve assembly 2.
The vehicle provided by the embodiment comprises a vehicle body and the methanol engine, wherein the methanol engine is mounted on the vehicle body. In this scheme, methanol nozzle assembly 3 and the mount table that is used for installing methanol nozzle assembly 3 all can conduct heat, and simultaneously, valve module 2 can control the communicating state between methanol engine's exhaust outlet and heating channel 121. Therefore, when the methanol engine is cold-started, the exhaust gas outlet of the methanol engine can be communicated with the heating channel 121 through the valve assembly 2, so that the methanol nozzle assembly 3 can be heated outside the pipe body 11 through the high-temperature exhaust gas of the methanol engine, the methanol fuel atomization effect is improved, the methanol fuel in the combustion chamber 8 is fully combusted, the combustion heat efficiency in a cylinder during cold start is improved, the generation of non-oxidizable SOOT and HC caused by low-temperature combustion of the methanol is greatly reduced, and the burden of an after-treatment system is reduced; meanwhile, the content of noble metals in a methanol engine post-treatment system can be reduced, and the cost is reduced.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The air inlet system of the methanol engine is characterized by comprising an air inlet manifold, a valve assembly and a methanol nozzle assembly, wherein the air inlet manifold comprises a pipe body and a heat conduction mounting table arranged on the outer wall of the pipe body, the methanol nozzle assembly is of a heat conduction structure and is fixed on the heat conduction mounting table, and a methanol spray outlet of the methanol nozzle assembly is communicated with an inner cavity of the pipe body;
the heat conduction mounting table is provided with a heating channel; the air inlet of the valve assembly is communicated with an exhaust gas outlet of the methanol engine, the air outlet of the valve assembly is communicated with the heating channel, and the valve assembly is used for controlling the communication state between the exhaust gas outlet of the methanol engine and the heating channel.
2. The air intake system of a methanol engine according to claim 1, wherein an opening degree of the valve assembly is adjustable.
3. The air intake system of the methanol engine of claim 2, wherein the valve assembly includes a solenoid valve, an air inlet of the solenoid valve is communicated with an exhaust gas outlet of the methanol engine, and an air outlet of the solenoid valve is communicated with an air inlet of the heating passage.
4. The methanol engine air intake system of claim 1, wherein the thermally conductive mount is a metal mount.
5. The air intake system of a methanol engine as claimed in claim 1, wherein the methanol nozzle assembly is a metal nozzle assembly.
6. A methanol engine characterized by comprising an engine body and an intake system of the methanol engine as claimed in any one of claims 1 to 5, the engine body having a combustion chamber and an intake passage corresponding to the combustion chamber, the intake manifold communicating with the intake passage.
7. The methanol engine of claim 6, which is characterized by comprising an exhaust pipe and a turbocharger, wherein the air inlet of the exhaust pipe is communicated with the exhaust gas outlet of the methanol engine, and the air outlet of the exhaust pipe is communicated with the vortex-end air inlet of the turbocharger;
the air inlet of the valve component is communicated with the exhaust pipe, and the air outlet of the heating channel is communicated with the exhaust gas outlet of the turbocharger.
8. The methanol engine according to claim 7, characterized in that when the intake system of the methanol engine is the intake system of the methanol engine according to claim 2 or 3, the methanol engine includes a first temperature sensor for detecting the temperature of the mixed gas in the intake manifold and an electronic control unit, and the valve assembly and the first temperature sensor are electrically connected to the electronic control unit.
9. The methanol engine according to claim 8, comprising a second temperature sensor electrically connected to the electronic control unit, the second temperature sensor being configured to detect a gas temperature at the gas outlet of the exhaust pipe.
10. A vehicle comprising a vehicle body and the methanol engine according to any one of claims 6 to 9, wherein the methanol engine is mounted to the vehicle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320028074.0U CN218882389U (en) | 2023-01-03 | 2023-01-03 | Air intake system, methyl alcohol engine and vehicle of methyl alcohol engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320028074.0U CN218882389U (en) | 2023-01-03 | 2023-01-03 | Air intake system, methyl alcohol engine and vehicle of methyl alcohol engine |
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| Publication Number | Publication Date |
|---|---|
| CN218882389U true CN218882389U (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320028074.0U Active CN218882389U (en) | 2023-01-03 | 2023-01-03 | Air intake system, methyl alcohol engine and vehicle of methyl alcohol engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116291930A (en) * | 2023-05-22 | 2023-06-23 | 潍柴动力股份有限公司 | Cold start method, device, equipment and system for methanol engine |
-
2023
- 2023-01-03 CN CN202320028074.0U patent/CN218882389U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116291930A (en) * | 2023-05-22 | 2023-06-23 | 潍柴动力股份有限公司 | Cold start method, device, equipment and system for methanol engine |
| CN116291930B (en) * | 2023-05-22 | 2023-08-18 | 潍柴动力股份有限公司 | Cold start method, device, equipment and system for methanol engine |
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