CN115324789A - Engine air inlet structure and engine - Google Patents
Engine air inlet structure and engine Download PDFInfo
- Publication number
- CN115324789A CN115324789A CN202211262461.7A CN202211262461A CN115324789A CN 115324789 A CN115324789 A CN 115324789A CN 202211262461 A CN202211262461 A CN 202211262461A CN 115324789 A CN115324789 A CN 115324789A
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- air inlet
- intake
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
- F02M26/19—Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings to the intake system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
- F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
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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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The invention relates to an engine air inlet structure and an engine, wherein the engine air inlet structure comprises an air inlet pressure stabilizing shell, one side of the air inlet pressure stabilizing shell is connected with an air inlet manifold, the other side of the air inlet pressure stabilizing shell is provided with an air inlet connecting pipe used for being connected with an air inlet main pipe, the first end of the air inlet connecting pipe is connected with the air inlet pressure stabilizing shell, the second end of the air inlet connecting pipe inclines upwards and extends towards the direction far away from the air inlet manifold, the air inlet main pipe is arranged at one side of the air inlet pressure stabilizing shell far away from the air inlet manifold, the air inlet main pipe comprises a horizontal extending section, a lifting section and a bending section which are sequentially connected, and the bending section is connected with the second end of the air inlet connecting pipe; the air inlet structure of the engine can enable airflow to rotate forwards in the air inlet pressure stabilizing shell, so that throttling is reduced, and the volume utilization rate and air inlet responsiveness are improved; meanwhile, the mixing of gas in the EGR mixing section and the gas inlet connecting pipe can be enhanced, the EGR mixing uniformity is improved, the engine cycle variation is reduced, and the fuel economy is improved.
Description
Technical Field
The invention relates to the technical field of engines, in particular to an engine air inlet structure and an engine.
Background
The natural gas engine aims to relieve energy crisis and environmental pollution and reduce gas consumption and emission. The air intake process is an important component of the working cycle of the engine, and the quality of the air intake directly determines the flow of air in the cylinder, thereby influencing the combustion in the cylinder. The intake air of the natural gas engine is mainly fresh air and mixed gas of natural gas and EGR. In the air intake process of the engine, if the mixture is not uniformly mixed, the gas quantity distributed to each cylinder through the air intake system is inconsistent, and the problems of poor working consistency and poor combustion effect of each cylinder of the engine are inevitably caused. Therefore, the improvement of the uniformity of the air intake mixture of each cylinder plays a key role in the consistency of the engine, and the performances of the engine, such as dynamic property, economy, emission and the like, can be optimized to a certain extent.
The volume utilization rate of the air intake system directly determines the air intake responsiveness of the engine, the higher the volume utilization rate of the air intake system is, the better the air intake responsiveness is, and the useless volume of the air intake system not only influences the air intake responsiveness, but also does not increase the air intake amount. Therefore, when the air inlet system is designed, the invalid volume is removed, the volume utilization rate is increased, the air inlet responsiveness is improved, and the significance is great.
And present gas machine, the structure of diesel engine is followed basically, and the mode of admitting air is mostly middle admitting air, and the not enough of arranging so is that the mixing section is shorter, and the mixing effect is not good. And the volume utilization rate is poor, further influencing the air intake responsiveness. Fig. 1 is a schematic structural diagram of a conventional air intake system, which has a structure of middle horizontal air intake and a short mixing section.
Fig. 2 is a schematic air intake diagram of an existing air intake system, and because the air intake mode is horizontal air intake, after air flows enter the air intake pressure stabilizing shell 01 through the air intake connecting pipe 04, the air flows enter each cylinder through each air intake manifold 02, and the air flows are also in a horizontal flowing state, and because some indispensable bolt avoiding grooves 03 (for fixing the air intake pressure stabilizing shell 01 on the cylinder cover) exist on the air intake pressure stabilizing shell 01, the air flows pass through the bolt avoiding grooves 03 to generate a certain throttling effect, and further energy loss is generated, as shown in fig. 3. And the air flow generates a dead zone near the bolt avoidance groove 03, so that the volume utilization rate of the air intake system is deteriorated, and further, the air intake responsiveness is deteriorated.
Disclosure of Invention
The first purpose of the invention is to provide an engine air inlet structure, which improves the volume utilization rate of an air inlet system and improves the air inlet responsiveness.
A second object of the present invention is to provide an engine including the above engine intake structure.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides an engine air inlet structure, includes the steady voltage shell of admitting air, intake manifold is connected to one side of the steady voltage shell of admitting air, the opposite side setting of the steady voltage shell of admitting air is used for the takeover of admitting air of being connected with air intake manifold, the first end of takeover of admitting air with the steady voltage shell of admitting air is connected, the second end slope of takeover of admitting air upwards and to keeping away from air intake manifold's direction extends, air intake manifold set up in one side of air intake manifold is kept away from to the steady voltage shell of admitting air, air intake manifold is including the horizontal extension section, lifting section and the section of bending that connect gradually, bend the section with the second end of takeover of admitting air is connected.
Optionally, a flange connection structure is arranged at the second end of the air inlet connecting pipe.
Optionally, the included angle between the air inlet connecting pipe and the horizontal plane is 30-60 degrees.
Optionally, the air inlet connecting pipe is connected to the middle part of the air inlet pressure stabilizing shell.
Optionally, the air inlet connecting pipe is in smooth transition connection with the air inlet pressure stabilizing shell.
Optionally, the intake manifold further includes an intake elbow and an EGR gas extraction pipe, and the intake elbow and the EGR gas extraction pipe are respectively connected with the horizontal extension section.
Optionally, the horizontal extension section and the lifting section are in smooth transition connection, and the bending section is an arc bent pipe.
An engine comprising an engine air intake structure as described in any one of the above.
Optionally, the engine is a gas engine.
According to the technical scheme, the air inlet structure of the engine comprises an air inlet pressure stabilizing shell, one side of the air inlet pressure stabilizing shell is connected with an air inlet manifold, the other side of the air inlet pressure stabilizing shell is provided with an air inlet connecting pipe used for being connected with an air inlet main pipe, the first end of the air inlet connecting pipe is connected with the air inlet pressure stabilizing shell, the second end of the air inlet connecting pipe inclines upwards and extends towards the direction far away from the air inlet manifold, the air inlet main pipe is arranged on one side, far away from the air inlet manifold, of the air inlet pressure stabilizing shell and comprises a horizontal extending section, a lifting section and a bending section which are sequentially connected, and the bending section is connected with the second end of the air inlet connecting pipe; when the air inlet pipe is applied, inlet air flows from the air inlet main pipe to the lifting section along the horizontal extension section and then enters the air inlet connecting pipe through the bending section after being lifted, and obliquely and downwards enters the air inlet pressure stabilizing shell from the air inlet connecting pipe, and the shape of air flow transmitted in a pressure stabilizing cavity of the air inlet pressure stabilizing shell can be changed only by changing the air inlet pressure stabilizing shell and the air inlet connecting pipe with lower cost on the existing arrangement form of the whole air inlet pipe, so that the air flow is in a forward rotating state when being transmitted in the air inlet pressure stabilizing shell, the throttling condition is reduced, the volume utilization rate is improved, and the air inlet responsiveness is improved; simultaneously, the EGR mixed section length of the intake manifold is increased, due to the inclined arrangement of the intake connecting pipe, the EGR mixed section connected with the intake connecting pipe of the intake manifold needs to be bent for multiple times, namely, the bending between the horizontal extension section and the lifting section, the bending of the bending section and the bending between the intake connecting pipe and the intake pressure stabilizing shell, the structure can enhance the mixing of gas in the EGR mixed section and the intake connecting pipe, and is favorable for improving the EGR mixed uniformity, reducing the cycle variation of an engine and improving the fuel economy.
The invention also discloses an engine which comprises the engine air inlet structure, and the engine has the same beneficial effects as the engine air inlet structure because the engine adopts the engine air inlet structure, and the description is omitted.
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 description of the embodiments or the prior art will be briefly described below, 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 drawings without creative efforts.
FIG. 1 is a schematic diagram of a conventional air intake system;
FIG. 2 is a schematic air intake diagram of a conventional air intake system;
FIG. 3 is a schematic view of the airflow within an inlet plenum housing of a prior art air induction system;
FIG. 4 is a schematic structural diagram of an engine intake structure provided in an embodiment of the present invention;
FIG. 5 is a schematic view of a connection structure between an intake pipe and an intake manifold of an intake structure of an engine according to an embodiment of the present invention;
FIG. 6 is a schematic view of the air flow in the intake plenum housing of the engine air intake structure provided by an embodiment of the present invention;
FIG. 7 is a histogram of EGR rate deviation for an engine air intake configuration provided in an embodiment of the present invention from a prior art engine air intake configuration.
In fig. 1 to 3:
01 is an air inlet pressure stabilizing shell; 02 is an intake manifold; 03 is a bolt avoidance groove; 04 is an air inlet connecting pipe;
in fig. 4 to 6:
1 is an air inlet pressure stabilizing shell; 2 is an intake manifold; 3 is a bolt avoiding groove; 4 is an air inlet connecting pipe; 5 is a horizontal extension section; 6 is a lifting section; 7 is a bending section; 8 is an air inlet bent pipe; and 9 is an EGR gas taking pipe.
Detailed Description
The invention provides an engine air inlet structure, which has a structural design that the volume utilization rate of an air inlet system can be improved and the air inlet responsiveness can be improved.
Another core of the present invention is to provide an engine including the above engine intake structure.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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 given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 4 to 6, fig. 4 is a schematic structural diagram of an engine air intake structure according to an embodiment of the present invention, fig. 5 is a schematic structural diagram of a connection structure between an air intake connection pipe and an air intake manifold of the engine air intake structure according to the embodiment of the present invention, and fig. 6 is a schematic airflow diagram in an air intake pressure stabilizing shell of the engine air intake structure according to the embodiment of the present invention.
The embodiment of the invention discloses an engine air inlet structure which comprises an air inlet pressure stabilizing shell 1, wherein one side of the air inlet pressure stabilizing shell 1 is connected with an air inlet manifold 2, the other side of the air inlet pressure stabilizing shell 1 is provided with an air inlet connecting pipe 4 used for being connected with an air inlet main pipe, the first end of the air inlet connecting pipe 4 is connected with the air inlet pressure stabilizing shell 1, the second end of the air inlet connecting pipe 4 inclines upwards and extends towards the direction far away from the air inlet manifold 2, the air inlet main pipe is arranged on one side of the air inlet pressure stabilizing shell 1 far away from the air inlet manifold 2, namely the air inlet manifold 2 and the air inlet main pipe are respectively connected with two sides of the air inlet pressure stabilizing shell 1, the air inlet main pipe comprises a horizontal extending section 5, a lifting section 6 and a bending section 7 which are sequentially connected, and the bending section 7 is connected with the second end of the air inlet manifold 4.
Compared with the prior art, when the engine air inlet structure provided by the embodiment of the invention is applied, air enters the air inlet connecting pipe 4 from the air inlet main pipe along the horizontal extension section 5 to the lifting section 6 and is lifted, and then enters the air inlet pressure stabilizing shell 1 from the air inlet connecting pipe 4 obliquely and downwards, on the basis of the existing arrangement form of the whole engine, the shape of air flow transmitted in the pressure stabilizing cavity of the air inlet pressure stabilizing shell 1 is changed by only changing the air inlet pressure stabilizing shell 1 and the air inlet connecting pipe 4 with lower cost, so that the air flow is in a forward rotating state when transmitted in the air inlet pressure stabilizing shell 1, as shown in fig. 6, the throttling condition caused by the bolt avoiding groove 3 is reduced, the volume utilization rate is improved, and the air inlet responsiveness is improved; meanwhile, the EGR mixed section length of the intake manifold is increased, namely the EGR mixed section is composed of the horizontal extension section 5, the lifting section 6 and the bending section 7, due to the inclined arrangement of the intake connecting pipe 4, the EGR mixed section connected with the intake connecting pipe 4 needs to be bent for multiple times, namely, the EGR mixed section is bent between the horizontal extension section 5 and the lifting section 6, the bending section 7 is bent, and the EGR mixed section is bent between the intake connecting pipe 4 and the intake pressure stabilizing shell 1, the structure can enhance the mixing of gas in the EGR mixed section and the intake connecting pipe 4, and is beneficial to improving the EGR mixed uniformity, as shown in figure 7, the cycle variation of an engine is reduced, and the fuel economy is improved.
In order to facilitate the connection between the air inlet connecting pipe 4 and the air inlet main pipe, a flange connection structure is arranged at the second end of the air inlet connecting pipe 4, and correspondingly, a flange connection structure matched with the flange connection structure is required to be arranged at one end of the air inlet main pipe connected with the air inlet connecting pipe 4.
Preferably, the included angle between the air inlet connecting pipe 4 and the horizontal plane is 30-60 degrees, and in the embodiment of the invention, the included angle between the air inlet connecting pipe 4 and the horizontal plane is 45 degrees.
Further, as shown in fig. 4, an intake nipple 4 is connected to the middle of the intake pressure-stabilizing case 1.
Preferably, the intake adapter 4 is connected with the intake surge tank 1 in a smooth transition manner to reduce the intake airflow resistance.
As shown in fig. 4, in the embodiment of the present invention, the intake manifold further includes an intake elbow 8 and an EGR gas taking pipe 9, and the intake elbow 8 and the EGR gas taking pipe 9 are respectively connected to the horizontal extension section 5.
Preferably, in the embodiment of the present invention, the horizontally extending section 5 and the lifting section 6 are connected in a smooth transition manner, and the bending section 7 is a circular arc bent pipe, so as to reduce the resistance of the intake airflow.
An embodiment of the present invention further provides an engine, where the engine includes the engine air intake structure according to the foregoing embodiment, and since the engine adopts the engine air intake structure according to the foregoing embodiment, the technical effect of the engine refers to the foregoing embodiment.
Preferably, in an embodiment of the present invention, the engine is a gas engine.
It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.
It should be understood that the use of "system," "apparatus," "unit" and/or "module" herein, if any, is merely one way to distinguish between different components, elements, parts, portions or assemblies of different levels. However, other words may be substituted by other expressions if they accomplish the same purpose.
As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements. An element defined by the phrase "comprising a component of ' 8230 ' \8230; ' does not exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.
Wherein in the description of the embodiments of the present application, "/" indicates an inclusive meaning, for example, a/B may indicate a or B; "and/or" herein is merely an association relationship describing an associated object, and means that there may be three relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality" means two or more than two.
In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.
If used in this application, the flowcharts are intended to illustrate operations performed by the system according to embodiments of the present application. It should be understood that the preceding or following operations are not necessarily performed in the exact order in which they are performed. Rather, the various steps may be processed in reverse order or simultaneously. Meanwhile, other operations may be added to the processes, or a certain step or several steps of operations may be removed from the processes.
It is also noted that, in this document, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrases "comprising one of the elements 8230 \8230;" does not exclude the presence of additional like elements in an article or device comprising the same element.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the core concepts of the present invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (9)
1. The utility model provides an engine air inlet structure, its characterized in that, is including the steady voltage shell that admits air, intake manifold is connected to one side of the steady voltage shell that admits air, the opposite side setting of the steady voltage shell that admits air is used for the takeover of admitting air of being connected with air intake manifold, the first end of the takeover of admitting air with the steady voltage shell that admits air is connected, the second end slope that admits air the takeover upwards and to keeping away from intake manifold's direction extends, intake manifold set up in one side that intake manifold was kept away from to the steady voltage shell that admits air, intake manifold is including the horizontal extension section, the lifting section that connect gradually and the section of bending, bend the section with the second end that admits air the takeover is connected.
2. The engine intake structure according to claim 1, characterized in that a flange connection structure is provided at the second end of the intake nipple.
3. The engine intake structure according to claim 1, wherein the angle between the intake connecting pipe and the horizontal plane is 30 ° to 60 °.
4. The engine intake structure according to claim 1, characterized in that the intake connecting pipe is connected to a middle portion of the intake surge case.
5. The engine intake structure according to claim 1, wherein the intake connection pipe is smoothly transitionally connected with the intake surge tank.
6. The engine intake structure according to any one of claims 1 to 5, wherein the intake manifold further includes an intake elbow and an EGR intake pipe, the intake elbow and the EGR intake pipe being connected to the horizontally extending section, respectively.
7. The engine intake structure according to any one of claims 1 to 5, wherein the horizontally extending section and the rising section are in smooth transition connection, and the bending section is a circular arc bent pipe.
8. An engine characterized by comprising the engine intake structure according to any one of claims 1 to 7.
9. The engine of claim 8, wherein the engine is a gas engine.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211262461.7A CN115324789A (en) | 2022-10-14 | 2022-10-14 | Engine air inlet structure and engine |
| CN202321369929.2U CN220036809U (en) | 2022-10-14 | 2023-05-30 | Engine air inlet structure and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211262461.7A CN115324789A (en) | 2022-10-14 | 2022-10-14 | Engine air inlet structure and engine |
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| Publication Number | Publication Date |
|---|---|
| CN115324789A true CN115324789A (en) | 2022-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211262461.7A Pending CN115324789A (en) | 2022-10-14 | 2022-10-14 | Engine air inlet structure and engine |
| CN202321369929.2U Active CN220036809U (en) | 2022-10-14 | 2023-05-30 | Engine air inlet structure and engine |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321369929.2U Active CN220036809U (en) | 2022-10-14 | 2023-05-30 | Engine air inlet structure and engine |
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| CN (2) | CN115324789A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090223476A1 (en) * | 2008-03-05 | 2009-09-10 | Aisin Seiki Kabushiki Kaisha | Gas introducing structure of intake path |
| CN110382855A (en) * | 2017-03-30 | 2019-10-25 | 马自达汽车株式会社 | The air suction way structure of engine |
| CN210152810U (en) * | 2019-12-24 | 2020-03-17 | 潍柴动力股份有限公司 | Air inlet system of natural gas engine |
| CN112012856A (en) * | 2020-03-05 | 2020-12-01 | 广西玉柴机器股份有限公司 | Air inlet pipeline structure capable of remarkably improving air inlet consistency of engine |
| CN216111065U (en) * | 2021-11-16 | 2022-03-22 | 一汽解放汽车有限公司 | Natural gas engine air intake system and natural gas engine |
-
2022
- 2022-10-14 CN CN202211262461.7A patent/CN115324789A/en active Pending
-
2023
- 2023-05-30 CN CN202321369929.2U patent/CN220036809U/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090223476A1 (en) * | 2008-03-05 | 2009-09-10 | Aisin Seiki Kabushiki Kaisha | Gas introducing structure of intake path |
| CN110382855A (en) * | 2017-03-30 | 2019-10-25 | 马自达汽车株式会社 | The air suction way structure of engine |
| CN210152810U (en) * | 2019-12-24 | 2020-03-17 | 潍柴动力股份有限公司 | Air inlet system of natural gas engine |
| CN112012856A (en) * | 2020-03-05 | 2020-12-01 | 广西玉柴机器股份有限公司 | Air inlet pipeline structure capable of remarkably improving air inlet consistency of engine |
| CN216111065U (en) * | 2021-11-16 | 2022-03-22 | 一汽解放汽车有限公司 | Natural gas engine air intake system and natural gas engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN220036809U (en) | 2023-11-17 |
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Application publication date: 20221111 |