Engine air inlet structure, methanol engine and vehicle
By introducing an adsorption part and a dehydration device into the intake structure of the methanol engine, the water vapor in the intake pipeline is absorbed and discharged, and the problem of affecting the cold start performance of the methanol engine is solved, and the effect of dry combustion gases and reducing water vapor condensation is achieved.
Patent Information
- Application Number
- CN202420183665.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-24
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-24
AI Technical Summary
The water vapor after the combustion of the methanol engine condenses in the intake pipeline, affecting the cold start performance.
An engine intake structure is designed, including an intake pipeline, an exhaust gas recirculation device and an adsorption part. By adsorbing water vapor in the pipeline, the mixed gas is dried and prevented from condensation. The structure includes a water absorbing layer and a dewatering device. The adsorption part is provided on the inner side wall of the intake pipe section. The material of the water absorbing layer is water absorbing fibers. The desorbed water is discharged through the drainage channel and the switch valve to ensure sufficient combustion in the cylinder.
Effectively prevent water vapor from freezing on the inner wall of the intake pipeline and the head of the fuel injector, improve the cold start performance of the methanol engine, ensure drying of the combustion gas, and reduce the corrosion of the pipeline by water vapor.
Smart Images
Figure CN222141403U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engine air intake, in particular to an engine air intake structure, a methanol engine and a vehicle. Background Art
[0002] Methanol as an internal combustion engine fuel has the advantages of fast combustion rate, good anti-knock performance and low pollution, and is the only choice for replacing traditional internal combustion engine fuel. However, since the products of methanol combustion contain a lot of water vapor, in colder areas, when the engine is stopped, the water vapor in the combustion products will flow back to the intake pipe through the EGR device, and will re-condense and adhere to the inner wall of the pipe, the sensor head or the injector head, affecting the engine cold start performance. Utility Model Content
[0003] The main purpose of the utility model is to provide an engine intake structure, a methanol engine and a vehicle, aiming to solve the problem that water vapor after combustion in the existing methanol engine is easily condensed in the intake pipeline after flowing back to the intake pipeline through the EGR device.
[0004] To achieve the above object, the utility model provides an engine air intake structure for a methanol engine, the engine air intake structure comprising:
[0005] An intake pipe having an intake pipe section for communicating with an intake manifold;
[0006] An exhaust gas recirculation device comprises a circulation pipeline, wherein the outlet of the circulation pipeline is connected to the intake pipe section, and the inlet is used to connect to the exhaust manifold; and
[0007] The adsorption part is arranged in the intake pipe section and is located between the outlet of the circulation pipeline and the intake manifold, and is used for adsorbing water vapor in the intake pipeline.
[0008] Optionally, the adsorption portion includes a water absorption layer arranged on the inner side wall of the air intake pipe section.
[0009] Optionally, the material of the water-absorbing layer includes water-absorbing fibers;
[0010] The engine air intake structure also includes a dehydration device for dehydrating the water-absorbing fibers.
[0011] Optionally, the air inlet pipe section includes an air inlet elbow, and the water absorption layer is arranged on the inner side wall of the air inlet elbow.
[0012] Optionally, the air intake pipe section is formed with a drainage channel, and the engine air intake structure further comprises a switch valve arranged in the drainage channel for opening or closing the drainage channel; and / or,
[0013] The dehydration device comprises an air supply pipe connected to the air intake pipe section for supplying gas to the air intake pipe section.
[0014] Optionally, the switch valve comprises a one-way valve.
[0015] Optionally, a water guide groove is provided on the inner side wall of the air intake pipeline, and the water guide groove is connected to the drainage channel.
[0016] Optionally, the water guide groove is arranged to be inclined toward the drainage channel.
[0017] The utility model also provides a methanol engine, comprising the above-mentioned engine air intake structure, wherein the engine air intake structure comprises:
[0018] An intake pipe having an intake pipe section for communicating with an intake manifold;
[0019] An exhaust gas recirculation device comprises a circulation pipeline, wherein the outlet of the circulation pipeline is connected to the intake pipe section, and the inlet is used to connect to the exhaust manifold; and
[0020] The adsorption part is arranged in the intake pipe section and is located between the outlet of the circulation pipeline and the intake manifold, and is used for adsorbing water vapor in the intake pipeline.
[0021] In addition, the utility model also provides a vehicle, comprising the above-mentioned methanol engine.
[0022] In the technical solution of the utility model, the intake pipe has an intake pipe section for connecting to the intake manifold so as to deliver fresh air to the intake manifold. The outlet of the circulation pipe is connected to the intake pipe section, and the inlet is connected to the exhaust manifold so as to introduce the gas exhausted from the exhaust manifold into the intake pipe to mix with the fresh air in the intake pipe so as to enable the fuel in the cylinder to be fully burned. The adsorption part is arranged on the intake pipe section and is located between the outlet of the circulation pipe and the intake manifold so as to adsorb water vapor in the mixed gas so as to enable the mixed gas to be fully burned. The mixed gas entering the cylinder for combustion is as dry as possible. In this way, the intake pipe is provided to deliver fresh air to the cylinder, and the circulation pipe is provided to introduce the exhaust gas in the exhaust manifold into the intake pipe to mix with the fresh air. At the same time, the adsorption part is provided to adsorb water vapor in the mixed gas to prevent water vapor from freezing on the inner wall of the intake manifold, the injector and the sensor head, thereby improving the cold start performance of the methanol engine, thereby solving the problem that water vapor after combustion in the existing methanol engine is easily condensed in the intake pipe. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0024] Figure 1 A schematic diagram of the structure of a methanol engine provided by the utility model;
[0025] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of the air intake pipe in FIG.
[0026] Figure 3 for Figure 1 Schematic diagram of the side view of the intake pipe.
[0027] Description of Figure Numbers:
[0028] Label name Label name 100 Engine air intake structure 3 Adsorption Department 1 Intake pipe 4 Air supply tube 11 Intake pipe section 5 Switching valve 12 Drainage channel 1000 engine 2 Exhaust Gas Recirculation Device 200 Intake manifold 21 Circulation pipeline 300 Exhaust manifold
[0029] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0031] It should be noted that if a directional indication is involved in the embodiments of the present invention, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.
[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.
[0033] Methanol as an internal combustion engine fuel has the advantages of fast combustion rate, good anti-knock performance and low pollution, and is the only choice for replacing traditional internal combustion engine fuel. However, since the products of methanol combustion contain a lot of water vapor, in colder areas, when the engine is stopped, the water vapor in the combustion products will flow back to the intake pipe through the EGR device, and will re-condense and adhere to the inner wall of the pipe, the sensor head or the injector head, affecting the engine cold start performance.
[0034] Based on this, the utility model provides an engine intake structure for a methanol engine, which aims to solve the problem that the water vapor after combustion in the existing methanol engine is easily condensed in the intake pipeline after flowing back to the intake pipeline through the EGR device. Figures 1 to 3 This is a schematic structural diagram of an embodiment of a methanol engine provided by the utility model.
[0035] See also Figures 1 to 3 The engine intake structure 100 includes an intake pipe 1, an exhaust gas recirculation device 2 and an adsorption portion 3. The intake pipe 1 has an intake pipe section 11 for connecting to an intake manifold 200. The exhaust gas recirculation device 2 includes a circulation pipe 21. The outlet of the circulation pipe 21 is connected to the intake pipe section 11, and the inlet is connected to the exhaust manifold 300. The adsorption portion 3 is arranged on the intake pipe section 11 and is located between the outlet of the circulation pipe 21 and the intake manifold 200, so as to adsorb water vapor in the intake pipe 1.
[0036] In the technical solution of the utility model, the intake pipe 1 has an intake pipe section 11 for connecting to the intake manifold 200 so as to deliver fresh air to the intake manifold 200. The outlet of the circulation pipe 21 is connected to the intake pipe section 11, and the inlet is connected to the exhaust manifold 300 so as to introduce the gas discharged from the exhaust manifold 300 into the intake pipe 1 to mix with the fresh air in the intake pipe 1 so that the fuel in the cylinder can be fully burned. The adsorption part 3 is arranged on the intake pipe section 11 and is located between the outlet of the circulation pipe 21 and the intake manifold 200 so as to adsorb the mixed gas. Water vapor is removed so that the mixed gas entering the cylinder for combustion is as dry as possible. In this way, the intake pipe 1 is provided to deliver fresh air to the cylinder, and the circulation pipe 21 is provided to introduce the exhaust gas in the exhaust manifold 300 into the intake pipe 1 to mix with the fresh air. At the same time, the adsorption part 3 is provided to adsorb water vapor in the mixed gas to prevent water vapor from freezing on the inner wall of the intake manifold 200, the injector and the sensor head, thereby improving the cold start performance of the methanol engine 1000, thereby solving the problem that water vapor after combustion of the existing methanol engine 1000 is easily condensed in the intake pipe 1.
[0037] In some embodiments of the utility model, the adsorption part 3 includes a water absorption layer arranged on the inner wall of the air intake pipe section 11. In this way, the water absorption layer is arranged to absorb water vapor in the mixed gas, reduce the water vapor content in the mixed gas, and reduce the corrosion of the downstream pipeline by water vapor. At the same time, when the water vapor is adsorbed to a certain extent, the water absorption layer is desorbed so that the water desorbed from the water absorption layer is gathered and discharged.
[0038] In some embodiments of the utility model, the material of the water-absorbing layer includes water-absorbing fibers, and the engine intake structure 100 also includes a dehydrating device for dehydrating the water-absorbing fibers. In this way, the water-absorbing fibers are arranged to absorb water vapor in the mixed gas and reduce the water vapor content in the intake pipe 1. At the same time, the dehydrating device is arranged to dehydrate the water-absorbing fibers when the water-absorbing fibers absorb water vapor to a certain extent, so that the water-absorbing fibers can continue to absorb water vapor later. Of course, in other embodiments, the water-absorbing layer can also be a water-absorbing sponge, etc., and the utility model does not limit this.
[0039] It should be noted that the water-absorbing layer can be desorbed by the material itself or by an additional dehydration device, as long as the adsorption part 3 can absorb water and repel water, and the utility model does not limit this. Furthermore, there are many ways to set the water-absorbing layer, and the water-absorbing layer can be coated in the air intake pipe 1 or bonded in the air intake pipe 1, and the utility model does not limit this.
[0040] In some embodiments of the utility model, the intake pipe section 11 includes an intake elbow, and the water absorption layer is arranged on the inner wall of the intake elbow. Since the intake pipe 1 usually includes components such as an elbow to facilitate the arrangement of the intake pipe 1 in the vehicle, but the elbow will increase the flow resistance of the pipeline, resulting in a decrease in the pressure of the pipeline, making it easy for water vapor to condense at the elbow. Therefore, the water absorption layer is arranged at the intake elbow to absorb water vapor to prevent water vapor from condensing at the intake elbow.
[0041] In some embodiments of the utility model, the intake pipe section 11 forms a drainage channel 12, and the engine intake structure 100 also includes a switch valve 5 arranged in the drainage channel 12, which is used to open or close the drainage channel 12. In this way, by setting the drainage channel 12 and the switch valve 5, the water at the desorption point of the water absorption layer can be discharged from the intake pipe 1 to prevent water from accumulating in the intake pipe 1.
[0042] In some embodiments of the utility model, the dehydration device includes an air supply pipe 4 connected to the air intake pipe section 11, which is used to supply gas to the air intake pipe section 11. In this way, the air supply pipe 4 is provided to supply gas to the air intake pipeline 1, so as to increase the air pressure of the air intake pipe section 11, so that the water absorption layer can be dehydrated. Of course, in other embodiments, the dehydration device can also dehydrate by heating, etc., and the utility model is not limited to this.
[0043] In some embodiments of the utility model, the switch valve 5 includes a one-way valve. Thus, by setting the one-way valve, the water desorbed from the water absorption layer can be automatically discharged from the intake pipe 1 to avoid the need for an additional solenoid valve for control, thereby helping to reduce the control cost of the engine intake structure 100.
[0044] In some embodiments of the utility model, a water guide groove is provided on the inner wall of the air intake pipe 1, and the water guide groove is connected to the drainage channel 12. Thus, by providing the water guide groove, the water desorbed from the water absorption layer is gathered together to facilitate subsequent discharge.
[0045] In some embodiments of the present invention, the water guide groove is inclined toward the drainage channel 12. Thus, the inclined setting is adopted so that the water in the water guide groove can automatically converge toward the drainage channel 12, thereby facilitating the discharge of water from the air intake pipe 1.
[0046] The utility model also provides a methanol engine 1000, including the above-mentioned engine intake structure 100. It should be noted that the structure of the engine intake structure 100 in the methanol engine 1000 can refer to the above-mentioned embodiment of the engine intake structure 100, which will not be repeated here; since the above-mentioned engine intake structure 100 is used in the methanol engine 1000 provided by the utility model, the embodiment of the methanol engine 1000 provided by the utility model includes all technical solutions of all embodiments of the above-mentioned engine intake structure 100, and the technical effects achieved are also exactly the same, which will not be repeated here.
[0047] In addition, the present invention further provides a vehicle, including the above-mentioned methanol engine 1000. It should be noted that the structure of the methanol engine 1000 in the vehicle can refer to the above-mentioned embodiment of the methanol engine 1000, which will not be repeated here; since the above-mentioned methanol engine 1000 is used in the vehicle provided by the present invention, the embodiment of the vehicle provided by the present invention includes all technical solutions of all embodiments of the above-mentioned methanol engine 1000, and the technical effects achieved are also exactly the same, which will not be repeated here.
[0048] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made under the concept of the present invention using the contents of the specification and drawings of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. An engine intake structure for a methanol engine, characterized in that: The engine air intake structure comprises: An intake pipe having an intake pipe section for communicating with an intake manifold; An exhaust gas recirculation device comprises a circulation pipeline, wherein the outlet of the circulation pipeline is connected to the intake pipe section, and the inlet is used to connect to the exhaust manifold; and The adsorption part is arranged in the intake pipe section and is located between the outlet of the circulation pipeline and the intake manifold, and is used for adsorbing water vapor in the intake pipeline.
2. The engine air intake structure according to claim 1, characterized in that: The adsorption part includes a water absorbing layer arranged on the inner side wall of the air intake pipe section.
3. The engine air intake structure according to claim 2, characterized in that: The material of the water-absorbing layer includes water-absorbing fibers; The engine air intake structure also includes a dehydration device for dehydrating the water-absorbing fibers.
4. The engine air intake structure according to claim 2, characterized in that: The air intake pipe section comprises an air intake elbow, and the water absorption layer is arranged on the inner side wall of the air intake elbow.
5. The engine air intake structure according to claim 3, characterized in that: The air intake pipe section is formed with a drainage channel, and the engine air intake structure further includes a switch valve arranged in the drainage channel to open or close the drainage channel; and / or, The dehydration device comprises an air supply pipe connected to the air intake pipe section for supplying gas to the air intake pipe section.
6. The engine air intake structure according to claim 5, characterized in that: The switch valve includes a one-way valve.
7. The engine air intake structure according to claim 5, characterized in that: The inner side wall of the air intake pipeline is provided with a water guide groove, and the water guide groove is connected to the drainage channel.
8. The engine air intake structure according to claim 7, characterized in that: The water guide groove is arranged to be inclined toward the drainage channel.
9. A methanol engine, characterized in that: It comprises the engine air intake structure as claimed in any one of claims 1 to 8.
10. A vehicle, characterized in that: Comprising the methanol engine as claimed in claim 9.