CN215566236U - Engine and vehicle with same - Google Patents
Engine and vehicle with same Download PDFInfo
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- CN215566236U CN215566236U CN202120955414.5U CN202120955414U CN215566236U CN 215566236 U CN215566236 U CN 215566236U CN 202120955414 U CN202120955414 U CN 202120955414U CN 215566236 U CN215566236 U CN 215566236U
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- engine
- combustion chamber
- spark plug
- main combustion
- prechamber
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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
Abstract
The utility model relates to an engine and a vehicle with the same, wherein the engine comprises a prechamber body, a first spark plug, a second spark plug and a main combustion chamber; the prechamber body is provided with a prechamber cavity, a first mounting position and a second mounting position; the precombustion chamber cavity and the first installation position are communicated with the main combustion chamber, and the second installation position is communicated with the precombustion chamber cavity; the first spark plug and the second spark plug are respectively arranged on the first installation position and the second installation position; the firing ends of the first and second spark plugs are inserted into the main combustion chamber and the prechamber cavity, respectively. In the engine and the vehicle with the same provided by the utility model, the first spark plug and the second spark plug are both arranged on the prechamber body, so that the structure is simple and the engine is convenient to install and maintain; different ignition modes are adopted under different loads, so that the problems of poor combustion stability, combustion deterioration and fuel consumption deterioration of the engine pre-combustion chamber in ignition cold start and low load and the problem of high-temperature damage in the pre-combustion chamber under high load are solved.
Description
Technical Field
The utility model relates to the technical field of automobile engines, in particular to an engine and a vehicle with the engine.
Background
The jet ignition technology of the pre-combustion chamber of the engine can greatly improve the combustion speed, improve the isochoricity of the combustion process and reduce the heat dissipation loss, and is an effective means for improving the heat efficiency of the engine. However, at low load and cold start, the residual exhaust gas in the prechamber is more, the temperature is low, the flow is weak, the ignition of the prechamber is difficult, and the fuel consumption of the engine at low load is seriously deteriorated. On the other hand, at high load, the temperature inside the prechamber is high and the tendency to knock is high. Moreover, the surface-to-volume ratio of the internal combustion engine is increased by the pre-combustion chamber, so that the heat dissipation of the engine is more, and the heat efficiency of the engine is reduced.
The engine that prior art has two spark plugs at present is a spark plug and installs on the precombustion chamber body, another spark plug installs on the cylinder head, and such structural design can make the engine mounting complicated, and the maintenance of follow-up engine is dismantled the difficulty simultaneously, wastes time and energy.
The foregoing description is provided for general background information and is not admitted to be prior art.
Disclosure of Invention
The utility model aims to provide an engine and a vehicle with the same.
The utility model provides an engine, which comprises a precombustion chamber body, a first spark plug, a second spark plug and a main combustion chamber, wherein the precombustion chamber body is provided with a first spark plug and a second spark plug; the precombustion chamber body is provided with a precombustion chamber cavity, a first mounting position and a second mounting position; the prechamber cavity is communicated with the main combustion chamber; the first spark plug is mounted on the first mounting location and the second spark plug is mounted on the second mounting location; the ignition end of the first spark plug extends into the main combustion chamber, and the ignition end of the second spark plug extends into the cavity of the precombustion chamber.
Further, the first installation position and the second installation position are installation holes, the first installation position is communicated with the main combustion chamber, and the second installation position is communicated with the prechamber cavity.
Further, the engine also comprises a cylinder cover, the precombustion chamber body is arranged at the top of the cylinder cover and communicated with the main combustion chamber through a plurality of jet holes, and the cylinder cover comprises an air inlet channel and an air exhaust channel.
Further, the axis of the prechamber body intersects the axis of the end of the intake duct proximate to the main combustion chamber.
Further, the pre-chamber body is disposed at a position between the intake passage and the exhaust passage.
Further, the cylinder head is mounted with the prechamber body in a position recessed toward the main combustion chamber.
Further, the precombustion chamber body is detachably connected with the cylinder cover.
Further, the injection holes include a first injection hole and a second injection hole, and orifices of the first injection hole and the second injection hole are arranged toward different directions.
Further, the volume of the precombustion chamber cavity is 0.5-3% of the volume of the main combustion chamber.
The utility model also provides a vehicle comprising the engine.
In the engine and the vehicle with the same, the first spark plug and the second spark plug of the engine are both arranged on the prechamber body, so that the structure is simple and the engine is convenient to install and maintain. Meanwhile, if the engine operates in a cold start working condition, a low-temperature low-load working condition and a high-load working condition, the first spark plug ignites to ignite combustible mixed gas in the main combustion chamber; if the engine runs at medium load and medium and high load, the second spark plug ignites to ignite the mixed gas in the cavity of the precombustion chamber, and high-temperature and high-pressure gas in the cavity of the precombustion chamber is sprayed into the main combustion chamber, so that the mixed gas in the main combustion chamber is ignited; different spark plugs are used in operation under different loads, so that the problems that the residual waste gas in the pre-combustion chamber is more, the temperature is low, the flow is weak, the ignition of the pre-combustion chamber is difficult, and the fuel consumption of the engine is seriously deteriorated under low load are solved; the problems of high temperature in the precombustion chamber, large detonation tendency and high-temperature damage in the precombustion chamber are solved; meanwhile, the capability of ignition and oil saving of the precombustion chamber is fully exerted at medium load and medium and high load.
Drawings
Fig. 1 is a schematic structural diagram of an engine according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of a combustion chamber body of the engine in fig. 1.
Fig. 3 is a schematic structural diagram of the combination of the combustion chamber body, the first spark plug and the second spark plug of the engine in fig. 1.
The reference numerals and components referred to in the drawings are as follows:
1. precombustor body
11. Precombustion chamber cavity
12. First installation site
13. Second mounting position
14. Injection hole
141. The first injection hole
142. Second injection hole
2. First spark plug
3. Second spark plug
4. Main combustion chamber
5. Cylinder cover
51. Air inlet channel
52. Air inlet valve
53. Exhaust valve
54. Exhaust passage
55. Cylinder sleeve
56. Connecting rod
57. Piston
58. Main combustion chamber injector
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
The terms first, second, third, fourth and the like in the description and in the claims of the present invention are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
Fig. 1 is a schematic structural diagram of an engine according to an embodiment of the present invention, fig. 2 is a schematic structural diagram of a combustion chamber body of the engine in fig. 1, and fig. 3 is a schematic structural diagram of a combination of the combustion chamber body, a first spark plug, and a second spark plug of the engine in fig. 1. Referring to fig. 1, 2 and 3, an engine according to an embodiment of the present invention includes a prechamber body 1, a first spark plug 2, a second spark plug 3 and a main combustion chamber 4; the prechamber body 1 is provided with a prechamber cavity 11, a first mounting position 12 and a second mounting position 13; the prechamber cavity 11 is communicated with the main combustion chamber 4, and the first spark plug 2 and the second spark plug 3 are respectively arranged on a first installation position 12 and a second installation position 13; the firing ends of the first spark plug 2 and the second spark plug 3 extend into the main combustion chamber 4 and the prechamber cavity 11, respectively. Specifically, first installation position 12 and second installation position 13 are both installation holes, and first installation position 12 communicates with main combustion chamber 4, and the second installation position communicates with prechamber cavity 11.
According to the engine provided by the embodiment of the utility model, the first spark plug 2 and the second spark plug 3 are both arranged on the prechamber body 1, so that when the engine is installed, only an integral assembly formed by the prechamber body 1, the first spark plug 2 and the second spark plug 3 is required to be arranged on the cylinder head 5, the installation of the engine is convenient, and meanwhile, the first spark plug 2 and the second spark plug 3 are both arranged on the prechamber body 1, so that the later-period engine is convenient to disassemble and maintain. Simple structure, low manufacturing cost, simple operation and simple and convenient processing.
When the engine operates in a cold start working condition, a low-temperature low-load working condition and a high-load working condition, the first spark plug 2 ignites to ignite combustible mixed gas in the main combustion chamber 4; when the engine runs at medium load and medium and high load, the second spark plug 3 is ignited to ignite the mixture in the prechamber cavity 11, and the high-temperature and high-pressure gas in the prechamber cavity 11 is sprayed into the main combustion chamber 4, so that the mixture in the main combustion chamber 4 is ignited; different spark plugs are used in operation under different loads, so that the problems that the residual waste gas in the prechamber cavity 11 is more, the temperature is low, the flow is weak, the ignition of the prechamber cavity 11 is difficult and the fuel consumption of the engine is seriously deteriorated under low load when the engine is started under low load and cold are solved; the problems that the temperature in the prechamber cavity 11 is high, the detonation trend is large, and the interior of the prechamber cavity 11 is damaged by high temperature are solved; meanwhile, the capability of igniting and saving oil in the prechamber cavity 11 is fully exerted at medium load and medium and high load.
It should be noted that, the first spark plug 2 is used to ignite the mixture in the main combustion chamber 4 at low load, which is beneficial to improving the problems of poor combustion stability and deteriorated oil consumption of the ignition in the prechamber cavity 11 under the working condition; the first spark plug 2 is used for ignition under the cold starting working condition, so that the enrichment of mixed gas can be reduced; the fuel economy can be greatly improved by adopting the second spark 3 for ignition at medium and medium-high loads; high load is ignited by the first spark plug 2, and damage to the interior of the prechamber cavity 11 caused by high temperature in the prechamber cavity 11 is reduced.
As shown in FIG. 1, the prechamber body 1 is disposed in the middle of the cylinder head 5, so that the injection holes 14 can directly inject to the center of the main combustion chamber 4 when igniting, thereby increasing the combustion efficiency, and the prechamber body 1 is also convenient to detach and mount when disposed in the middle of the cylinder head 5.
As shown in fig. 1, the engine provided by the embodiment of the present invention further includes a cylinder head 5, and the prechamber body 1 is mounted on the top of the cylinder head 5, specifically, the prechamber body 1 and the cylinder head 5 are detachably connected, specifically, screwed, so as to be convenient to mount and dismount. And communicates with the main combustion chamber 4 through a plurality of jet holes 14; so that the prechamber cavity 11 and the main combustion chamber 4 can be gas exchanged. Specifically, the jet hole 14 is cylindrical, the diameter of the jet hole 14 is 0.5-2 mm, and the volume of the prechamber cavity 11 accounts for 0.5-3% of the volume of the main combustion chamber 4.
As shown in fig. 1, the cylinder head 5 according to the embodiment of the present invention includes an intake passage 51 and an exhaust passage 54. The axis of the prechamber body 1 intersects the axis of the end of the intake passage 51 near the main combustion chamber 4; thereby making the oxygen content higher at the ignition position of the first spark plug 2 and the pre-chamber body 1, and increasing the ignition efficiency. The pre-chamber body 1 is disposed at a position between the intake passage 51 and the exhaust passage 54. The position of the cylinder cover 5 for installing the precombustion chamber body 1 is concave towards the main combustion chamber 4; make first spark plug 2 and prechamber body 1 more be close to the central point of main combustion chamber 4 and put, fuel from the center burning when making its ignition to make the burning more abundant.
As shown in fig. 2 and 3, the injection hole 14 includes a first injection hole 141 and a second injection hole 142, and the first injection hole 141 and the second injection hole 142 are directed in different directions. Specifically, the axis of the first injection hole 141 forms an included angle with the central axis of the prechamber chamber 11, and the axis of the second injection hole 142 coincides with the central axis of the prechamber chamber 11. Thus, the injection holes 14 are injected in different directions at the time of ignition, and combustion thereof is made more uniform.
As shown in fig. 1, one side of the upper part of the cylinder head 5 is provided with an inlet 51, and the other side is provided with an outlet 54, the inlet 51 and the outlet 54 are of a cavity structure, and gas can flow along the air passage; the air inlet passage 51 and the air outlet passage 54 are both communicated with the main combustion chamber 4; an intake valve 52 and an exhaust valve 53 are respectively arranged in the intake passage 51 and the exhaust passage 54, and the intake valve 52 and the exhaust valve 53 can move up and down along the axis direction of the installation hole; the sealing surfaces of the intake valve 52 and the exhaust valve 53 coincide with the sealing surface of the cylinder head 5 for sealing the gas. When the intake valve 52 is opened, gas flows into the cylinder; when the exhaust valve 53 is opened, the gas flows out of the cylinder.
The cylinder cover 5 is provided with a main combustion chamber ejector 58 in a compression mode, and the main combustion chamber ejector 58 sprays fuel oil to the main combustion chamber 4; the lower end of the cylinder head 5 is connected with a cylinder sleeve 55 in a threaded manner, and the axis of the cylinder sleeve 55 coincides with the center of the main combustion chamber 4. The joint surface of the cylinder cover 5 and the cylinder sleeve 55 is coated with glue for sealing gas.
The piston 57 is arranged in the cylinder sleeve 55, the axis of the piston 57 is coincided with the center of the cylinder sleeve 55, and two gas rings and an oil ring are arranged between the piston 57 and the cylinder sleeve 55 and are concentrically arranged and used for sealing high-temperature and high-pressure gas and lubricating oil respectively. The main combustion chamber 4 has a cavity structure including a cylinder head 5, a cylinder liner 55, an intake valve 52, an exhaust valve 53, and a piston 57.
The working process of the engine provided by the embodiment of the utility model comprises the following steps:
during the intake stroke, intake valve 52 is opened, exhaust valve 53 is closed, piston 57 moves downward, and air enters main combustion chamber 4 from intake port 51. Main combustion chamber injector 58 injects a mass of fuel into main combustion chamber 4.
② in the compression stroke, both the intake valve 52 and the exhaust valve 53 are closed, and the piston 57 is moved upward. The mixture in the main combustion chamber 4 enters the prechamber chamber 11 through the jet holes 14.
And thirdly, when the piston 57 runs to the vicinity of the top dead center, if the engine runs under the cold start working condition, the low-temperature low-load working condition and the high-load working condition, the first spark plug 2 ignites to ignite the combustible mixture gas in the main combustion chamber 4. When the engine is operated at medium and medium/high loads, the second spark plug 3 is ignited to ignite the mixture in the prechamber chamber 11, and the high-temperature and high-pressure gas in the prechamber chamber 11 is injected into the main combustion chamber 4 through the injection holes 14, thereby igniting the mixture in the main combustion chamber 4
And fourthly, in the power stroke, the mixed gas in the main combustion chamber 4 is ignited to push the piston 57 to move downwards.
In the exhaust stroke, the exhaust valve 53 is opened, the piston 57 moves upward, and the burned exhaust gas enters the exhaust passage 54 from the main combustion chamber 4.
Sixthly, repeating the steps from the first step to the fifth step and circulating and reciprocating.
Based on the above description, the present invention has the following advantages:
1. according to the engine provided by the utility model, the first spark plug 2 and the second spark plug 3 are both arranged on the prechamber body 1, so that when the engine is installed, only an integral assembly formed by the prechamber body 1, the first spark plug 2 and the second spark plug 3 is required to be arranged on the cylinder head 5, the installation of the engine is convenient, and meanwhile, the first spark plug 2 and the second spark plug 3 are both arranged on the prechamber body 1, so that the later-period engine is convenient to disassemble and maintain. Simple structure, low manufacturing cost, simple operation and simple and convenient processing.
2. According to the engine provided by the utility model, when the engine operates in a cold start working condition, a low-temperature low-load working condition and a high-load working condition, the first spark plug 2 is ignited to ignite combustible mixed gas in the main combustion chamber 4; when the engine runs at medium load and medium and high load, the second spark plug 3 is ignited to ignite the mixture in the prechamber cavity 11, and the high-temperature and high-pressure gas in the prechamber cavity 11 is sprayed into the main combustion chamber 4, so that the mixture in the main combustion chamber 4 is ignited; different spark plugs are used in operation under different loads, so that the problems that the residual waste gas in the prechamber cavity 11 is more, the temperature is low, the flow is weak, the ignition of the prechamber cavity 11 is difficult and the fuel consumption of the engine is seriously deteriorated under low load when the engine is started under low load and cold are solved; the problems that the temperature in the prechamber cavity 11 is high, the detonation trend is large, and the interior of the prechamber cavity 11 is damaged by high temperature are solved; meanwhile, the capability of igniting and saving oil in the prechamber cavity 11 is fully exerted at medium load and medium and high load.
The embodiment of the utility model also provides a vehicle comprising the electronic braking device.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. An engine, characterized in that: comprises a prechamber body (1), a first spark plug (2), a second spark plug (3) and a main combustion chamber (4); the precombustion chamber body (1) is provided with a precombustion chamber cavity (11), a first mounting position (12) and a second mounting position (13); the prechamber cavity (11) is communicated with the main combustion chamber (4);
the first spark plug (2) is mounted on the first mounting location (12) and the second spark plug (3) is mounted on the second mounting location (13); the ignition end of the first spark plug (2) extends into the main combustion chamber (4), and the ignition end of the second spark plug (3) extends into the prechamber cavity (11).
2. The engine of claim 1, wherein: the first installation position (12) and the second installation position (13) are installation holes, the first installation position (12) is communicated with the main combustion chamber (4), and the second installation position is communicated with the prechamber cavity (11).
3. The engine of claim 1, wherein: the engine further comprises a cylinder cover (5), the precombustion chamber body (1) is installed at the top of the cylinder cover (5) and communicated with the main combustion chamber (4) through a plurality of injection holes (14), and the cylinder cover (5) comprises an air inlet passage (51) and an exhaust passage (54).
4. The engine of claim 3, wherein: the axis of the precombustion chamber body (1) is intersected with the axis of one end, close to the main combustion chamber (4), of the air inlet channel (51).
5. The engine of claim 3, wherein: the prechamber body (1) is arranged in a position between the inlet channel (51) and the outlet channel (54).
6. The engine of claim 5, wherein: the position of the cylinder cover (5) for installing the precombustion chamber body (1) is concave towards the main combustion chamber (4).
7. The engine of claim 3, wherein: the precombustion chamber body (1) is detachably connected with the cylinder cover (5).
8. The engine of claim 3, wherein: the injection hole (14) includes a first injection hole (141) and a second injection hole (142), and orifices of the first injection hole (141) and the second injection hole (142) are arranged toward different directions.
9. The engine of claim 1, wherein: the volume of the precombustion chamber cavity (11) is 0.5-3% of the volume of the main combustion chamber (4).
10. A vehicle, characterized in that: comprising an engine according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120955414.5U CN215566236U (en) | 2021-05-06 | 2021-05-06 | Engine and vehicle with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120955414.5U CN215566236U (en) | 2021-05-06 | 2021-05-06 | Engine and vehicle with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215566236U true CN215566236U (en) | 2022-01-18 |
Family
ID=79858932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120955414.5U Active CN215566236U (en) | 2021-05-06 | 2021-05-06 | Engine and vehicle with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215566236U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542267A (en) * | 2022-02-21 | 2022-05-27 | 重庆长安汽车股份有限公司 | Pre-combustion chamber ignition system and engine |
| CN115126592A (en) * | 2022-07-27 | 2022-09-30 | 同济大学 | Hydrogen pre-combustion chamber type engine and control method thereof |
-
2021
- 2021-05-06 CN CN202120955414.5U patent/CN215566236U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114542267A (en) * | 2022-02-21 | 2022-05-27 | 重庆长安汽车股份有限公司 | Pre-combustion chamber ignition system and engine |
| CN114542267B (en) * | 2022-02-21 | 2023-09-08 | 重庆长安汽车股份有限公司 | Pre-combustion chamber ignition system and engine |
| CN115126592A (en) * | 2022-07-27 | 2022-09-30 | 同济大学 | Hydrogen pre-combustion chamber type engine and control method thereof |
| CN115126592B (en) * | 2022-07-27 | 2023-08-29 | 同济大学 | Hydrogen precombustion chamber type engine and control method thereof |
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