CN112610321A - Engine exhaust passage heat insulation device and vehicle - Google Patents
Engine exhaust passage heat insulation device and vehicle Download PDFInfo
- Publication number
- CN112610321A CN112610321A CN202011448127.1A CN202011448127A CN112610321A CN 112610321 A CN112610321 A CN 112610321A CN 202011448127 A CN202011448127 A CN 202011448127A CN 112610321 A CN112610321 A CN 112610321A
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- Prior art keywords
- exhaust
- heat insulation
- exhaust passage
- engine
- manifold
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
- F01N13/102—Other arrangements or adaptations of exhaust conduits of exhaust manifolds having thermal insulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention relates to the technical field of vehicles and discloses an engine exhaust passage heat insulation device and a vehicle. The engine exhaust passage heat insulation device comprises a cylinder cover, an exhaust manifold and a heat insulation ring, wherein the cylinder cover is provided with an exhaust passage, one end of the exhaust passage is provided with an exhaust inlet, the exhaust inlet is communicated with a combustion chamber of the engine, and the other end of the exhaust passage is provided with an exhaust outlet; the exhaust manifold is communicated with the exhaust outlet; one end of the heat insulation ring is arranged in the exhaust passage, the other end of the heat insulation ring is arranged in the exhaust manifold, and the inner wall of the heat insulation ring is flush with the inner walls of the exhaust manifold and the exhaust passage. According to the invention, the heat insulation ring is additionally arranged between the exhaust outlet and the exhaust manifold, so that the heat dissipation of high-temperature exhaust gas to the exhaust passage and the exhaust manifold is reduced, the energy of the exhaust gas is saved, the oil consumption is reduced, and the heat efficiency of the engine is further improved; meanwhile, the arrangement of the heat insulation ring also reduces heat dissipation, thereby reducing the heat load on the exhaust passage cooling device and improving the reliability of the engine; in addition, the heat insulation ring is simple in structure and easy to achieve in engineering.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to an engine exhaust passage heat insulation device and a vehicle.
Background
The exhaust passage is an important structure of the cylinder cover of the engine and has the function of exhausting combusted waste gas out of the cylinder. The temperature of the exhaust gas is above 700 ℃, which exceeds the bearing limit of the temperature of the cylinder cover material, so that the cylinder cover is designed with a cooling system to cool the exhaust passage to ensure the reliability. The energy contained in the high-temperature and high-pressure waste gas needs to do work on the supercharger, and the heat taken away by the cylinder cover cooling system is directly the loss on oil consumption. Therefore, the requirement of the exhaust passage heat insulation technology is increasingly urgent.
In the prior art, in order to avoid the problems, a heat insulation and temperature resistance coating is coated on the inner wall of a common exhaust passage in most of the heat insulation technologies of the exhaust passage, and the coating has the defects that the reliability is difficult to ensure and the whole engine is scrapped due to slight falling.
Therefore, an engine exhaust passage heat insulation device is needed to solve the above problems.
Disclosure of Invention
Based on the above, the invention aims to provide an engine exhaust passage heat insulation device and a vehicle, which have the advantages of reducing oil consumption, improving reliability, being easy to realize engineering and the like.
In order to achieve the purpose, the invention adopts the following technical scheme:
an engine exhaust stack thermal insulation device comprising:
the exhaust passage is arranged on the cylinder cover, one end of the exhaust passage is provided with an exhaust inlet, the exhaust inlet is communicated with the engine combustion chamber, and the other end of the exhaust passage is provided with an exhaust outlet;
an exhaust manifold in communication with the exhaust outlet;
a first mounting groove is formed in one end, close to the exhaust outlet, of the exhaust passage, a first limiting surface is arranged at one end of the first mounting groove, and one end of the heat insulation ring is arranged in the exhaust passage and is abutted against the first limiting surface; a second mounting groove is formed in one end, close to the exhaust outlet, of the exhaust manifold, a second limiting surface is arranged at one end of the second mounting groove, and the other end of the heat insulation ring is arranged in the exhaust manifold and is abutted against the second limiting surface; the inner wall of the heat insulating ring is flush with the inner walls of the exhaust manifold and the exhaust passage.
As a preferable scheme of the engine exhaust passage heat insulation device, a first matching surface is arranged on the circumferential direction of the first mounting groove, and the first matching surface and the outer peripheral wall of the heat insulation ring are arranged in a clearance mode.
As a preferable scheme of the engine exhaust passage heat insulation device, a second matching surface is arranged on the circumferential direction of the second mounting groove, and the second matching surface and the outer peripheral wall of the heat insulation ring are arranged in a clearance mode.
As a preferable scheme of the engine exhaust passage heat insulation device, the inner wall of the heat insulation ring is made of a heat-resistant alloy material, and the outer wall of the heat insulation ring is provided with a heat insulation coating.
As a preferable scheme of the engine exhaust passage heat insulation device, the cross section of the heat insulation ring is circular.
As a preferable proposal of the engine exhaust passage heat insulation device, a manifold pad is arranged between the exhaust manifold and the exhaust outlet.
As a preferred scheme of the engine exhaust passage heat insulation device, a water jacket which is wound on the periphery of the exhaust passage is arranged on the cylinder cover.
As a preferable scheme of the engine exhaust passage heat insulation device, the exhaust manifold and the cylinder cover are detachably connected.
Preferably, the exhaust manifold and the heat insulating ring, and the cylinder head and the heat insulating ring are detachably connected.
A vehicle comprises the engine exhaust passage heat insulation device in any one of the above aspects.
The invention has the beneficial effects that:
the heat insulation ring is additionally arranged between the exhaust outlet and the exhaust manifold, specifically, one end of the heat insulation ring is arranged in the exhaust passage, and the other end of the heat insulation ring is arranged in the exhaust manifold, so that the high-temperature waste gas and one end of the exhaust passage close to the exhaust outlet and one end of the high-temperature waste gas and one end of the exhaust manifold close to the exhaust outlet are effectively isolated, the heat dissipation of the high-temperature waste gas to the exhaust passage and the exhaust manifold is reduced, the energy of the waste gas is saved, the oil consumption is reduced, and the heat efficiency; meanwhile, the inner wall of the heat insulation ring is flush with the inner walls of the exhaust manifold and the exhaust passage, so that the high-temperature waste gas is discharged, the impact of the high-temperature waste gas on the heat insulation ring 3 is reduced, and the retention time of the high-temperature waste gas in the exhaust manifold and the exhaust passage is shortened; in addition, the arrangement of the heat insulation ring also reduces heat dissipation, thereby reducing the heat load on the exhaust passage cooling device and improving the reliability of the engine; in addition, the heat insulation ring is simple in structure and easy to achieve in engineering.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a schematic illustration of an engine exhaust stack insulation provided in accordance with an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an insulating ring of an engine exhaust stack insulation device according to an embodiment of the present invention;
FIG. 3 is a side view of an insulating ring of an engine exhaust stack insulation device according to an embodiment of the present invention;
FIG. 4 is a top view of a cylinder head of an engine exhaust stack insulation device according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view taken at A-A of FIG. 4;
FIG. 6 is a partial schematic view of an exhaust manifold of an engine exhaust stack insulation according to an embodiment of the present invention.
In the figure:
1. a cylinder head; 11. an exhaust passage; 12. an exhaust gas inlet; 13. an exhaust outlet; 14. a first mounting groove; 141. a first limiting surface; 142. a first mating surface; 15. a water jacket;
2. an exhaust manifold; 21. a second mounting groove; 211. a second limiting surface; 212. a second mating surface;
3. a heat insulating ring; 31. a thermal barrier coating;
4. a manifold pad.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-6, the present embodiment provides an engine exhaust passage heat insulation device for a vehicle, which comprises a cylinder head 1, an exhaust manifold 2 and a heat insulation ring 3, wherein an exhaust passage 11 is arranged on the cylinder head 1, one end of the exhaust passage 11 is provided with an exhaust inlet 12, the exhaust inlet 12 is communicated with a combustion chamber of the engine, and the other end is provided with an exhaust outlet 13; the exhaust manifold 2 communicates with an exhaust outlet 13; one end of the heat insulation ring 3 is arranged in the exhaust passage 11, the other end of the heat insulation ring is arranged in the exhaust manifold 2, and the inner wall of the heat insulation ring 3 is flush with the inner walls of the exhaust manifold 2 and the exhaust passage 11.
By additionally arranging the heat insulation ring 3 between the exhaust outlet 13 and the exhaust manifold 2, specifically, one end of the heat insulation ring 3 is arranged in the exhaust passage 11, and the other end is arranged in the exhaust manifold 2, so that the high-temperature exhaust gas is effectively isolated from one end of the exhaust passage 11 close to the exhaust outlet 13 and one end of the high-temperature exhaust gas and the exhaust manifold 2 close to the exhaust outlet 13, the heat dissipation of the high-temperature exhaust gas to the exhaust passage 11 and the exhaust manifold 2 is reduced, the energy of the exhaust gas is saved, the oil consumption is reduced, and the heat efficiency of the engine is further improved; meanwhile, the inner wall of the heat insulation ring 3 is flush with the inner walls of the exhaust manifold 2 and the exhaust passage 11, so that the high-temperature waste gas is discharged, the impact of the high-temperature waste gas on the heat insulation ring 3 is reduced, and the retention time of the high-temperature waste gas in the exhaust manifold 2 and the exhaust passage 11 is shortened; in addition, the arrangement of the heat insulation ring 3 also reduces heat dissipation, thereby reducing the heat load on the cooling device of the exhaust passage 11 and improving the reliability of the engine; in addition, the heat insulation ring 3 is simple in structure and easy to realize in engineering.
Specifically, a manifold gasket 4 is provided between the exhaust manifold 2 and the exhaust outlet 13 for sealing the exhaust pipe and the gas inside the exhaust manifold 2. In the prior art, the manifold pad 4 is made of a metal or non-metal material. During operation, the manifold mat 4 is susceptible to mat split failures due to high temperature exhaust gas scouring. Because the heat insulation ring 3 is additionally arranged, and one end of the heat insulation ring 3 is extended into the exhaust manifold 2, the contact between high-temperature waste gas and the manifold gasket 4 is effectively isolated, and the sealing reliability of the manifold gasket 4 is improved.
Further, a water jacket 15 surrounding the periphery of the exhaust passage 11 is disposed on the cylinder head 1 for cooling the exhaust passage 11, so as to prevent the exhaust passage 11 from failing due to an excessively high temperature. It should be noted that two exhaust inlets 12 are provided on the engine head, and the high-temperature exhaust gas passing through the two exhaust inlets 12 is collected in the exhaust passage 11 and then enters the exhaust manifold 2 through the heat insulating ring 3.
Preferably, the heat insulating ring 3 is provided in a circular shape in cross section as shown in fig. 2 and 3. The circular insulating ring 3 facilitates machining and tolerance control, facilitating assembly with the exhaust outlet 13 and the exhaust manifold 2.
In order to realize the installation of the heat insulation ring 3, the exhaust manifold 2 and the cylinder head 1 are detachably connected, and the exhaust manifold 2 and the heat insulation ring 3, and the cylinder head 1 and the heat insulation ring 3 can be detachably connected for the maintenance and the replacement of the heat insulation ring 3.
In this embodiment, the inner wall of the heat insulating ring 3 is made of a heat-resistant alloy material, so that the heat insulating ring 3 is kept from deforming under the high-temperature exhaust gas flushing, and the reliability is ensured. The outer wall of the heat insulation ring 3 is provided with a heat insulation coating 31, and the heat insulation coating has the functions of reducing the heat loss of high-temperature exhaust gas, ensuring the temperature of the exhaust gas and improving the heat efficiency of the engine. Meanwhile, the thermal insulation coating 31 is beneficial to the temperature of the exhaust passage 11 at the joint of the thermal insulation ring 3 so as to improve the reliability of the exhaust passage 11.
In order to realize the connection between the heat insulating ring 3 and the exhaust outlet 13, as shown in fig. 4 and 5, a first mounting groove 14 is disposed at one end of the exhaust passage 11 close to the exhaust outlet 13, a first limiting surface 141 is disposed at one end of the first mounting groove 14, the first limiting surface 141 abuts against one end of the heat insulating ring 3, and the first limiting surface 141 is used for fixing the axial movement of the heat insulating ring 3 and avoiding the wear failure of the heat insulating coating 31. The first fitting groove 14 is circumferentially provided with a first fitting surface 142, and the first fitting surface 142 is spaced from the outer circumferential wall of the heat insulating ring 3. The advantage of a clearance fit is, on the one hand, that a slight clearance can further increase the thermal insulation effect and, on the other hand, that damage to the thermal barrier coating 31 during installation is ensured.
In order to realize the connection between the heat insulating ring 3 and the exhaust manifold 2, as shown in fig. 6, one end of the exhaust manifold 2 close to the exhaust outlet 13 is provided with a second mounting groove 21, one end of the second mounting groove 21 is provided with a second limiting surface 211, and the second limiting surface 211 is abutted against the other end of the heat insulating ring 3 for fixing the axial movement of the heat insulating ring 3 and avoiding the wear failure of the heat insulating coating 31. The second fitting surface 212 is provided in the circumferential direction of the second fitting groove 21, and the second fitting surface 212 is provided in a gap with the outer circumferential wall of the heat insulating ring 3. The advantage of a clearance fit is, on the one hand, that a slight clearance can further increase the thermal insulation effect and, on the other hand, that damage to the thermal barrier coating 31 during installation is ensured.
It is worth to be noted that the heat insulation ring 3 is arranged in a containing area formed by the first installation groove 14 and the second installation groove 21, firstly, the heat insulation coating 31 on the outer peripheral wall of the heat insulation ring 3 and the heat insulation layer formed by the gap between the heat insulation ring 3 and the exhaust passage 11 and the exhaust manifold 2 have the heat insulation effect on high-temperature exhaust gas, so that the temperature of the exhaust gas is ensured, the energy of the exhaust gas is saved, and the oil consumption of the whole machine is reduced; meanwhile, the heat insulation ring 3 can effectively insulate heat conduction between the high-temperature waste gas and the water jacket 15, ensure the temperature of the high-temperature waste gas and improve the heat efficiency of the engine. Finally, the heat insulation ring 3 can also insulate the contact between high-temperature waste gas and the manifold pad 4, and the sealing reliability of the manifold pad 4 is improved.
In other optional embodiments of the invention, the engine exhaust passage heat insulation device can also be applied to an engine air inlet passage by adopting the same application principle of the invention, and the function of the engine exhaust passage heat insulation device is to prevent cooling water from transferring heat to fresh air, reduce the air inlet temperature, improve the charging efficiency and improve the thermal efficiency of the engine. The application effect is opposite to that of the invention, and the application principle is the same as that of the invention.
The embodiment also discloses a vehicle which comprises the engine exhaust passage heat insulation device.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Claims (10)
1. An engine exhaust passage heat insulating device, comprising:
the cylinder cover (1) is provided with an exhaust passage (11), one end of the exhaust passage (11) is provided with an exhaust inlet (12), the exhaust inlet (12) is communicated with a combustion chamber of an engine, and the other end of the exhaust passage is provided with an exhaust outlet (13);
an exhaust manifold (2) communicating with the exhaust outlet (13);
the exhaust passage (11) is provided with a first mounting groove (14) at one end close to the exhaust outlet (13), one end of the first mounting groove (14) is provided with a first limiting surface (141), and one end of the heat insulation ring (3) is arranged in the exhaust passage (11) and is abutted against the first limiting surface (141); a second mounting groove (21) is formed in one end, close to the exhaust outlet (13), of the exhaust manifold (2), a second limiting surface (211) is arranged at one end of the second mounting groove (21), and the other end of the heat insulation ring (3) is arranged in the exhaust manifold (2) and is abutted to the second limiting surface (211); the inner wall of the heat insulation ring (3) is flush with the inner walls of the exhaust manifold (2) and the exhaust passage (11).
2. The engine exhaust passage heat insulation device according to claim 1, characterized in that a first fitting surface (142) is arranged on the circumference of the first mounting groove (14), and the first fitting surface (142) is arranged in a clearance with the outer circumferential wall of the heat insulation ring (3).
3. The engine exhaust passage heat insulation device according to claim 1, characterized in that a second fitting surface (212) is arranged on the periphery of the second mounting groove (21), and the second fitting surface (212) is arranged in a clearance with the outer peripheral wall of the heat insulation ring (3).
4. The engine exhaust passage heat insulation device according to claim 1, characterized in that the inner wall of the heat insulation ring (3) is made of heat-resistant alloy material, and the outer wall of the heat insulation ring (3) is provided with a heat insulation coating (31).
5. The engine exhaust passage thermal insulation device according to claim 1, characterized in that the cross section of the insulation ring (3) is provided in a circular shape.
6. The engine exhaust passage insulation arrangement according to claim 1, characterized in that a manifold mat (4) is arranged between the exhaust manifold (2) and the exhaust outlet (13).
7. The engine exhaust passage heat insulating device according to claim 1, characterized in that a water jacket (15) is provided on the cylinder head (1) around the periphery of the exhaust passage (11).
8. The engine exhaust duct insulation device according to claim 1, characterized in that the exhaust manifold (2) is detachably connected to the cylinder head (1).
9. The engine exhaust duct insulation device according to claim 1, characterized in that the removable connections between the exhaust manifold (2) and the insulating ring (3) and between the cylinder head (1) and the insulating ring (3) are made.
10. A vehicle characterized by comprising the engine exhaust passage thermal insulation device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011448127.1A CN112610321A (en) | 2020-12-09 | 2020-12-09 | Engine exhaust passage heat insulation device and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011448127.1A CN112610321A (en) | 2020-12-09 | 2020-12-09 | Engine exhaust passage heat insulation device and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112610321A true CN112610321A (en) | 2021-04-06 |
Family
ID=75233416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011448127.1A Pending CN112610321A (en) | 2020-12-09 | 2020-12-09 | Engine exhaust passage heat insulation device and vehicle |
Country Status (1)
| Country | Link |
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| CN (1) | CN112610321A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4430856A (en) * | 1981-11-13 | 1984-02-14 | Deere & Company | Port liner and method of assembly |
| CN109281745A (en) * | 2018-11-29 | 2019-01-29 | 汽解放汽车有限公司 | Heat-insulated cumulative bushing type exhaust pipe and cylinder cover attaching structure |
| CN209278014U (en) * | 2018-10-29 | 2019-08-20 | 天津中恒动力研究院有限公司 | Exhaust structure and engine |
| CN110425053A (en) * | 2019-09-27 | 2019-11-08 | 潍柴动力股份有限公司 | Cylinder head and cylinder |
| WO2020020828A1 (en) * | 2018-07-23 | 2020-01-30 | Renault S.A.S | Thermal insulation device for the exhaust of a heat engine |
-
2020
- 2020-12-09 CN CN202011448127.1A patent/CN112610321A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4430856A (en) * | 1981-11-13 | 1984-02-14 | Deere & Company | Port liner and method of assembly |
| WO2020020828A1 (en) * | 2018-07-23 | 2020-01-30 | Renault S.A.S | Thermal insulation device for the exhaust of a heat engine |
| CN209278014U (en) * | 2018-10-29 | 2019-08-20 | 天津中恒动力研究院有限公司 | Exhaust structure and engine |
| CN109281745A (en) * | 2018-11-29 | 2019-01-29 | 汽解放汽车有限公司 | Heat-insulated cumulative bushing type exhaust pipe and cylinder cover attaching structure |
| CN110425053A (en) * | 2019-09-27 | 2019-11-08 | 潍柴动力股份有限公司 | Cylinder head and cylinder |
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Application publication date: 20210406 |
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