CN115324762A - Exhaust passage exhaust structure and engine - Google Patents
Exhaust passage exhaust structure and engine Download PDFInfo
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- CN115324762A CN115324762A CN202211261199.4A CN202211261199A CN115324762A CN 115324762 A CN115324762 A CN 115324762A CN 202211261199 A CN202211261199 A CN 202211261199A CN 115324762 A CN115324762 A CN 115324762A
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- exhaust
- passage
- cylinder
- branch air
- exhaust branch
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4264—Shape or arrangement of intake or exhaust channels in cylinder heads of exhaust channels
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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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention provides an exhaust passage exhaust structure and an engine, wherein a cylinder cover of a cylinder is provided with a first cylinder and a second cylinder which are adjacently arranged, two first exhaust branch air passages of the first cylinder are converged to a first main exhaust passage, and two second exhaust branch air passages of the second cylinder are converged to a second main exhaust passage; the first auxiliary exhaust branch air passage extending from the first exhaust branch air passage and the second auxiliary exhaust branch air passage extending from the second exhaust branch air passage are arranged at one side of the first exhaust branch air passage and one side of the second exhaust branch air passage adjacent to each other; the first auxiliary exhaust branch air passage and the second auxiliary exhaust branch air passage are converged to form an auxiliary exhaust passage. Through the mode that stretches out first vice exhaust branch air flue and the vice exhaust branch air flue of second respectively on the first exhaust branch air flue of two adjacent sides of cylinder and exhaust branch air flue, form the carminative structure of main exhaust passage and vice exhaust passage combination on the cylinder cap to can increase the flow area of exhaust passage, reduce the air current and block, improve the patency of exhausting.
Description
Technical Field
The invention relates to the technical field of engines, in particular to an exhaust passage exhaust structure and an engine.
Background
With stricter laws and regulations and more importance of society on energy, people put higher demands on the reliability and performance of diesel engines. Where the magnitude of the engine's exhaust efficiency has a significant impact on performance.
The cylinder head of the engine is responsible for discharging exhaust gas in the cylinder. The good exhaust capacity can reduce the pumping loss, reduce the combustion temperature, improve the efficiency of the supercharger, improve the excess air coefficient, ensure the reliability of the engine and greatly improve the thermal efficiency of the engine.
In the existing cylinder head exhaust structure shown in fig. 1, cylinder head bolts are installed in cylinder head bolt mounting holes 2 ' to be connected with a cylinder body, exhaust passages 1 ' are arranged in parallel, and two exhaust passages 1 ' are independently separated air passages, which is the most ideal arrangement, but because the exhaust temperature of an engine is high, the cylinder head bolts clamped between the two exhaust passages are easy to lose efficacy at high temperature. In order to ensure effective cooling of the cylinder head, the structure of the two exhaust passages is arranged into the exhaust passage structure of the cylinder head as shown in fig. 2, two air inlets are combined into an exhaust port 3 'for exhausting, a cylinder head bolt mounting hole 4' is positioned at one side of the exhaust passage, a cylinder head bolt is only close to the exhaust passage at one side, the connection stability is improved, but the insufficient flow area of the exhaust flange surface can be caused, the air flow is blocked, and the exhaust is not smooth.
Disclosure of Invention
In view of this, the present invention provides an exhaust structure of an exhaust passage, so as to ensure the exhaust smoothness of the exhaust passage; the invention also provides an engine.
In order to achieve the purpose, the invention provides the following technical scheme:
an exhaust passage exhaust structure is characterized in that a cylinder cover is provided with a first cylinder and a second cylinder which are adjacently arranged, two first exhaust branch air passages of the first cylinder are converged to a first main exhaust passage, and two second exhaust branch air passages of the second cylinder are converged to a second main exhaust passage;
a first auxiliary exhaust branch air passage extending from the first exhaust branch air passage and a second auxiliary exhaust branch air passage extending from the second exhaust branch air passage are arranged on one side of the first exhaust branch air passage adjacent to one side of the second exhaust branch air passage;
and the first auxiliary exhaust branch air passage and the second auxiliary exhaust branch air passage are converged to form an auxiliary exhaust passage.
Preferably, in the exhaust passage exhaust structure described above, the exhaust structures of the first cylinder and the second cylinder are arranged symmetrically.
Preferably, in the exhaust passage exhaust structure, check valves are disposed in both the first auxiliary exhaust branch passage and the second auxiliary exhaust branch passage, and the positions of the check valves are close to the confluence position of the auxiliary exhaust passage.
Preferably, in the exhaust passage exhaust structure, the first main exhaust passage has a first exhaust outlet area S1, the auxiliary exhaust passage has a second exhaust outlet area S2, and the two first exhaust branch passages have the same exhaust inlet area S3; the first exhaust gas outlet area S1, the second exhaust gas outlet area S2, and the exhaust gas inlet area S3 satisfy: s1+ S2 > 2S3.
Preferably, in the exhaust structure of the exhaust passage, a plurality of flange bolt mounting holes are distributed on the cylinder head, the flange bolt mounting holes are distributed among the first main exhaust passage, the second main exhaust passage and the auxiliary exhaust passage, and the cylinder head is provided with cooling water channels distributed on two sides of the auxiliary exhaust passage.
Preferably, in the exhaust passage and exhaust structure, the inlet of the first auxiliary exhaust branch passage is located at the lower end of the connecting line between the centers of the heads of the two first exhaust branch passages.
Preferably, in the exhaust passage exhaust structure, adjacent sides of the first exhaust branch passage and the second exhaust branch passage are offset in a direction away from each other along an airflow direction, and converge to a main exhaust passage on a corresponding side.
Preferably, in the exhaust passage exhaust structure, two of the first exhaust branch passages and two of the second exhaust branch passages have a confluence angle in a confluence direction, and the confluence angle is an acute angle.
Preferably, in the exhaust passage exhaust structure described above, the exhaust beats of the first cylinder and the second cylinder are alternately performed.
An engine having a plurality of cylinders in which exhaust strokes are alternately performed, an exhaust passage exhaust structure as described above being provided between two adjacent cylinders which are different in exhaust stroke.
The invention provides an exhaust passage exhaust structure.A cylinder cover of a cylinder is provided with a first cylinder and a second cylinder which are adjacently arranged, two first exhaust branch air passages of the first cylinder are converged to a first main exhaust passage, and two second exhaust branch air passages of the second cylinder are converged to a second main exhaust passage; the first auxiliary exhaust branch air passage extending from the first exhaust branch air passage and the second auxiliary exhaust branch air passage extending from the second exhaust branch air passage are arranged at one side of the first exhaust branch air passage and one side of the second exhaust branch air passage adjacent to each other; the first auxiliary exhaust branch air passage and the second auxiliary exhaust branch air passage are converged to form an auxiliary exhaust passage. With first branch air flue of exhausting and second branch air flue of exhausting all adopt by two way converge to the structure of converging of main exhaust passage all the way, avoided the cylinder cap bolt to be located two exhaust problem of becoming invalid easily between the branch air flue, through stretch out the mode that first pair was exhausted and was propped the air flue and the vice exhaust passage of second on the branch air flue of first branch air flue of exhausting of two adjacent sides of cylinder and second respectively, form main exhaust passage and the carminative structure of vice exhaust passage combination on the cylinder cap, thereby can increase the flow area of exhaust passage, it blocks to reduce the air current, improve the patency of exhausting.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a prior art cylinder head exhaust arrangement;
FIG. 2 is an alternative exhaust passage configuration for the cylinder head;
FIG. 3 is a schematic structural diagram of an exhaust structure of an exhaust passage provided by the present invention;
FIG. 4 is a head lower end face structure of the exhaust passage exhaust structure shown in FIG. 3.
Detailed Description
The invention discloses an exhaust structure of an exhaust passage, which ensures the smoothness of exhaust of the exhaust passage; the invention also provides an engine.
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 a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 3 and 4, fig. 3 is a schematic structural view of an exhaust passage exhaust structure provided by the invention; FIG. 4 is a head lower end face structure of the exhaust passage exhaust structure shown in FIG. 3.
The embodiment provides an exhaust passage exhaust structure, a cylinder head 4 is provided with a first cylinder and a second cylinder which are adjacently arranged, two first exhaust branch air passages 101 of the first cylinder are converged to a first main exhaust passage 111, and two second exhaust branch air passages 102 of the second cylinder are converged to a second main exhaust passage 112; a first auxiliary exhaust branch air passage 121 extending from the first exhaust branch air passage 101 and a second auxiliary exhaust branch air passage 122 extending from the second exhaust branch air passage 102 are arranged at one side of the first exhaust branch air passage 101 adjacent to the second exhaust branch air passage 102; the first sub exhaust branch passage 121 and the second sub exhaust branch passage 122 merge to form the sub exhaust passage 103. The first exhaust branch air passage 101 and the second exhaust branch air passage 102 are both of a confluence structure which is formed by converging two paths to a main exhaust passage, a first auxiliary exhaust branch air passage 121 and a second auxiliary exhaust branch air passage 122 are respectively extended from the first exhaust branch air passage 101 and the second exhaust branch air passage 102 on the adjacent sides of the two cylinders, and a main exhaust passage and an auxiliary exhaust passage combined exhaust structure is formed on the cylinder cover 4, so that the flow area of the exhaust passage can be increased, the airflow blockage is reduced, and the exhaust smoothness is improved.
In a specific embodiment of the present disclosure, the exhaust structures of the first cylinder and the second cylinder are symmetrically arranged. In two cylinders with alternately-performed intake beats, when the first cylinder and the second cylinder perform exhaust branch gas passage confluence, the first cylinder and the second cylinder are converged by the deviation of adjacent exhaust branch gas passages towards the outward exhaust branch gas passage.
Specifically, the first cylinder has a first exhaust structure including a first main exhaust passage 111, a first exhaust branch gas passage 101, and a first sub exhaust branch gas passage 121, and the second cylinder has a second exhaust structure including a second main exhaust passage 112, a second exhaust branch gas passage 102, and a second sub exhaust branch gas passage 122.
As shown in fig. 3, the exhaust passage arrangement direction on the cylinder head of the cylinder is specifically that the position of the first exhaust branch passage 101 on the left side is fixed, and the first exhaust branch passage 101 on the right side is shifted to the left to realize confluence of the two first exhaust branch passages 101; the two second exhaust branch air passages 102 adopt a confluence structure symmetrical to the two first exhaust branch air passages 101, and the second exhaust branch air passage 102 on the left side is shifted to the right and is converged with the second exhaust branch air passage 102 on the right side. By setting the exhaust structures of the first cylinder and the second cylinder to be basically symmetrical structures, good exhaust capacity is obtained, and stable exhaust is guaranteed.
In an embodiment of the present disclosure, the check valve 11 is disposed on each of the first sub exhaust branch air passage 121 and the second sub exhaust branch air passage 122, and the check valve 11 is disposed close to the confluence position of the sub exhaust passage 103. For a 6-cylinder engine, the ignition sequence of the engine usually adopts an alternate ignition mode, so that the sequence of the air intake and the air exhaust of each group of cylinders from the air intake side 5 is that when a first cylinder is used for air intake, a second cylinder is used for air exhaust; when the first cylinder exhausts, the second cylinder admits air; the air intake and exhaust actions of the two cylinders are alternately carried out. Check valves 11 are arranged in the first auxiliary exhaust branch air passage 121 and the second auxiliary exhaust branch air passage 122, so that mutual interference between adjacent cylinders is prevented, and exhaust safety is guaranteed. Meanwhile, the check valve 11 should be arranged at a position close to the front end of the auxiliary exhaust passage 103, so that exhaust gas can smoothly enter the auxiliary exhaust passage 103 through the auxiliary exhaust branch air passage, and stable exhaust gas is ensured.
Further, the first main exhaust passage 111 has a first exhaust outlet 8 with a first exhaust outlet area S1, the auxiliary exhaust passage 103 has a second exhaust outlet 9 with a second exhaust outlet area S2, the two first exhaust branch passages of the first cylinder have the same exhaust inlet 13 structure, the exhaust inlet 13 has an exhaust inlet area S3, the cylinder head 4 is provided with an exhaust inlet 13, the exhaust inlet 13 has a valve seat 14, and the position of the exhaust inlet area S3 of the exhaust inlet 13 is the inner circle position defined by the valve seat 14; the first exhaust gas outlet area S1, the second exhaust gas outlet area S2, and the exhaust gas inlet area S3 satisfy: s1+ S2 is more than 2S3, namely the sum of the first exhaust outlet area S1 and the second exhaust outlet area S2 is more than 2 times of the exhaust inlet area S3, namely the area of the total exhaust outlet is more than the total exhaust area, so that the smooth discharge of exhaust gas is ensured.
Because the first auxiliary exhaust branch air passage 121 and the second auxiliary exhaust branch air passage 122 are opened alternatively with the work of the first cylinder and the second cylinder, in each exhaust process, the first main exhaust passage 111 and the first auxiliary exhaust branch air passage 121, or the second main exhaust passage 112 and the second auxiliary exhaust branch air passage 122 are alternately exhausted, and therefore, smooth exhaust can be ensured only by ensuring that the exhaust outlet area of exhaust is larger than the total exhaust area in the cylinder.
In a specific embodiment of the scheme, a plurality of flange bolt mounting holes 2 are distributed on the cylinder head 4, the flange bolt mounting holes 2 are distributed among the first main exhaust passage 111, the second main exhaust passage 112 and the auxiliary exhaust passage 103, and cooling water channels 10 distributed on two sides of the auxiliary exhaust passage 103 are arranged on the cylinder head 4. Cylinder cylinder cap 4 passes through cylinder head bolt intercommunication flange bolt mounting hole 2, realize that cylinder cap 4 is connected with the cylinder body, the position of arranging of flange bolt mounting hole 2 arranges with the exhaust passage structure simultaneously, the high temperature structure for avoiding the exhaust passage causes the connection structure of cylinder head bolt to become invalid, make it all can arrange flange bolt mounting hole 2 between first main exhaust passage 111 and the second main exhaust passage 112 with adding vice exhaust passage 103, arrange cooling water passageway 10 respectively in the both sides of vice exhaust passage 103, it cooperates with the structure of converging of first exhaust branch air way 101 and second exhaust branch air way 102, make between vice exhaust passage 103 and first cylinder and the second cylinder, leave the space of arranging the cooling water passageway, can cool off the flange bolt, guarantee joint strength.
In an embodiment of the present invention, the air inlet of the first sub-exhaust branch passage 121 is located at the lower end of the connection line between the centers of the heads of the two first exhaust branch passages 101, and the head of the first exhaust branch passage 101 refers to the end of the first exhaust branch passage 101 connected to the first cylinder.
The adjacent sides of the first exhaust branch gas passage 101 and the second exhaust branch gas passage 102 are offset in the direction away from each other along the gas flow direction, and converge to the main exhaust passage on the corresponding side. The two first exhaust branch gas passages 101 and the two second exhaust branch gas passages 102 both have a confluence angle of a confluence direction, and the confluence angle is an acute angle.
Combining the confluence structure of the first exhaust branch air passages 101 and the second exhaust branch air passages 102, for example, in a first cylinder, the right parts of the two first exhaust branch air passages 101 change directions towards the left and converge, the leading-out positions of the first exhaust branch air passages 101 are lower than the lower ends of the connecting lines of the head centers of the two first exhaust branch air passages 101, the two first exhaust branch air passages 101 are close to each other, the adjacent inner walls are merged and converge, the intersection angle of the central lines of the two first exhaust branch air passages 101 is determined as the confluence angle, and the confluence angle is an acute angle, so that the exhaust can be smoothly led out by the main exhaust passage and the auxiliary exhaust passage. The adjacent side of the first exhaust branch air passage 101 and the adjacent side of the second exhaust branch air passage 102 are far away from each other along the airflow direction, so that the first main exhaust passage and the second main exhaust passage are far away from each other, a larger distance is obtained, and the influence on the bolt connection stability of a cylinder cover is reduced.
Based on the exhaust passage exhaust structure provided in the above embodiment, the invention also provides an engine, which has a plurality of cylinders with exhaust beats alternately, and the exhaust passage exhaust structure provided in the above embodiment is adopted between two adjacent cylinders with different exhaust beats.
Because the engine adopts the exhaust passage exhaust structure of the above embodiment, please refer to the above embodiment for the beneficial effects brought by the exhaust passage exhaust structure of the engine.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An exhaust passage exhaust structure is characterized in that a cylinder cover is provided with a first cylinder and a second cylinder which are adjacently arranged, two first exhaust branch air passages of the first cylinder are converged to a first main exhaust passage, and two second exhaust branch air passages of the second cylinder are converged to a second main exhaust passage;
a first auxiliary exhaust branch air passage extending from the first exhaust branch air passage and a second auxiliary exhaust branch air passage extending from the second exhaust branch air passage are arranged on one side of the first exhaust branch air passage adjacent to one side of the second exhaust branch air passage;
and the first auxiliary exhaust branch air passage and the second auxiliary exhaust branch air passage are converged to form an auxiliary exhaust passage.
2. The exhaust passage exhaust structure according to claim 1, characterized in that the exhaust structures of the first cylinder and the second cylinder are arranged symmetrically.
3. The exhaust passage exhaust structure according to claim 2, wherein check valves are disposed in both the first sub exhaust branch passage and the second sub exhaust branch passage, and the check valves are disposed at positions close to a confluence position of the sub exhaust passages.
4. The exhaust passage exhaust structure according to claim 3, wherein said first main exhaust passage has a first exhaust outlet area S1, said auxiliary exhaust passage has a second exhaust outlet area S2, and both of said first exhaust branch passages have the same exhaust inlet area S3; the first exhaust gas outlet area S1, the second exhaust gas outlet area S2, and the exhaust gas inlet area S3 satisfy: s1+ S2 > 2S3.
5. The exhaust passage exhaust structure according to claim 4, wherein a plurality of flange bolt mounting holes are distributed in the cylinder head, the flange bolt mounting holes are distributed among the first main exhaust passage, the second main exhaust passage and the auxiliary exhaust passage, and the cylinder head is provided with cooling water passages distributed on both sides of the auxiliary exhaust passage.
6. The exhaust passage exhaust structure according to claim 5, wherein the inlet of said first auxiliary exhaust branch passage is located at the lower end of the line connecting the centers of the heads of said two first exhaust branch passages.
7. The exhaust passage exhaust structure according to claim 1, wherein adjacent sides of the first exhaust branch passage and the second exhaust branch passage are offset in a direction away from each other in the direction of air flow and merge into the main exhaust passage on the corresponding side.
8. The exhaust passage exhaust structure according to claim 7, wherein both of said first exhaust branch passages and both of said second exhaust branch passages have a confluence angle in a confluence direction, said confluence angle being acute.
9. The exhaust passage exhaust structure according to claim 1, characterized in that exhaust beats of the first cylinder and the second cylinder are alternately performed.
10. An engine having a plurality of cylinders in which exhaust strokes are alternately performed, characterized in that an exhaust passage exhaust structure according to any one of claims 1 to 9 is provided between two cylinders that are adjacent and different in exhaust strokes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211261199.4A CN115324762B (en) | 2022-10-14 | 2022-10-14 | Exhaust passage exhaust structure and engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211261199.4A CN115324762B (en) | 2022-10-14 | 2022-10-14 | Exhaust passage exhaust structure and engine |
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| CN115324762A true CN115324762A (en) | 2022-11-11 |
| CN115324762B CN115324762B (en) | 2023-03-21 |
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| CN202211261199.4A Active CN115324762B (en) | 2022-10-14 | 2022-10-14 | Exhaust passage exhaust structure and engine |
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Citations (9)
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| JP2005188351A (en) * | 2003-12-25 | 2005-07-14 | Honda Motor Co Ltd | Cooling structure for exhaust manifold integrated type engine |
| JP2006083756A (en) * | 2004-09-15 | 2006-03-30 | Daihatsu Motor Co Ltd | Structure of cylinder head in multi-cylinder internal combustion engine |
| KR20090062255A (en) * | 2007-12-12 | 2009-06-17 | 현대자동차주식회사 | Cylinder having integrated port-exhaust manifold |
| US20090151343A1 (en) * | 2007-12-14 | 2009-06-18 | Hyundai Motor Company | Integrally Formed Engine Exhaust Manifold and Cylinder Head |
| JP2015121180A (en) * | 2013-12-24 | 2015-07-02 | 三菱自動車工業株式会社 | Cylinder head structure |
| CN213478510U (en) * | 2020-10-28 | 2021-06-18 | 中国第一汽车股份有限公司 | Cylinder cover of engine, engine and automobile |
| CN213478456U (en) * | 2020-10-13 | 2021-06-18 | 潍柴动力股份有限公司 | Exhaust pipe structure and engine |
| JP2021120547A (en) * | 2020-01-30 | 2021-08-19 | ダイハツ工業株式会社 | Structure of exhaust system of internal combustion engine |
| CN114320650A (en) * | 2022-03-16 | 2022-04-12 | 潍柴动力股份有限公司 | Cylinder head and engine |
-
2022
- 2022-10-14 CN CN202211261199.4A patent/CN115324762B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005188351A (en) * | 2003-12-25 | 2005-07-14 | Honda Motor Co Ltd | Cooling structure for exhaust manifold integrated type engine |
| JP2006083756A (en) * | 2004-09-15 | 2006-03-30 | Daihatsu Motor Co Ltd | Structure of cylinder head in multi-cylinder internal combustion engine |
| KR20090062255A (en) * | 2007-12-12 | 2009-06-17 | 현대자동차주식회사 | Cylinder having integrated port-exhaust manifold |
| US20090151343A1 (en) * | 2007-12-14 | 2009-06-18 | Hyundai Motor Company | Integrally Formed Engine Exhaust Manifold and Cylinder Head |
| JP2015121180A (en) * | 2013-12-24 | 2015-07-02 | 三菱自動車工業株式会社 | Cylinder head structure |
| JP2021120547A (en) * | 2020-01-30 | 2021-08-19 | ダイハツ工業株式会社 | Structure of exhaust system of internal combustion engine |
| CN213478456U (en) * | 2020-10-13 | 2021-06-18 | 潍柴动力股份有限公司 | Exhaust pipe structure and engine |
| CN213478510U (en) * | 2020-10-28 | 2021-06-18 | 中国第一汽车股份有限公司 | Cylinder cover of engine, engine and automobile |
| CN114320650A (en) * | 2022-03-16 | 2022-04-12 | 潍柴动力股份有限公司 | Cylinder head and engine |
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| CN115324762B (en) | 2023-03-21 |
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