CN112523906A - Gas engine air intake system - Google Patents
Gas engine air intake system Download PDFInfo
- Publication number
- CN112523906A CN112523906A CN202011236004.1A CN202011236004A CN112523906A CN 112523906 A CN112523906 A CN 112523906A CN 202011236004 A CN202011236004 A CN 202011236004A CN 112523906 A CN112523906 A CN 112523906A
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- CN
- China
- Prior art keywords
- air inlet
- gas
- engine
- air
- intake system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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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
- F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
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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
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/04—Gas-air mixing apparatus
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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
- F02M35/02—Air cleaners
- F02M35/024—Air cleaners using filters, e.g. moistened
- F02M35/02416—Fixing, mounting, supporting or arranging filter elements; Filter element cartridges
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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
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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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The invention discloses a gas engine air inlet system, comprising: a mixer, a filtering device and an air inlet connecting pipe. The mixer has first air inlet, second air inlet, third air inlet and gas outlet, and first air inlet is used for supplying the air to get into, and the second air inlet is used for supplying EGR waste gas to get into, and the third air inlet is used for supplying the gas to get into, and the mixer is used for mixing air, EGR waste gas and obtains the mist. The filtering device comprises: a shell and a filter screen. One end of the shell is fixedly connected with the air outlet of the mixer. The filter screen is embedded in one end of the shell. One end of the air inlet connecting pipe is fixedly connected with the other end of the shell, and the other end of the air inlet connecting pipe is fixedly connected with a cylinder cover of the engine. The mixed gas enters the interior of a cylinder head of the engine through the filtering device and the air inlet connecting pipe in sequence. Therefore, the gas engine air inlet system is simple and reasonable in structure, the failure rate of engine products can be reduced, and the reliability of the engine products is improved.
Description
Technical Field
The invention relates to the technical field of engines, in particular to an air inlet system of a gas engine.
Background
In the existing gas engine air inlet system with an EGR (exhaust gas recirculation) system, air, EGR exhaust gas and fuel gas are mixed in a mixer, and the mixed gas enters the interior of an engine cylinder head through an air inlet connecting pipe.
When the existing gas engine with the EGR system is stopped and lagged in cold regions, the residual moisture in the exhaust gas can be frozen in the mixer, and when the engine is restarted, if the fallen ice blocks are sucked into the cylinder cover along with the mixed gas, the performance of the engine can be influenced, and even the engine can be out of order. In addition, if the gas and air are not sufficiently mixed, the combustion of each cylinder is not uniform, and the performance of the engine is affected.
The existing gas engine air inlet system lacks a device for preventing ice blocks or other foreign matters falling off from the mixer from entering the cylinder cover, and also lacks a device for accelerating the full mixing of gas and air.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide an air inlet system of a gas engine, which has a simple and reasonable structure, can reduce the failure rate of engine products and improve the reliability of the engine products.
To achieve the above object, the present invention provides a gas engine intake system, comprising: a mixer, a filtering device and an air inlet connecting pipe. The mixer has first air inlet, second air inlet, third air inlet and gas outlet, and first air inlet is used for supplying the air to get into, and the second air inlet is used for supplying EGR waste gas to get into, and the third air inlet is used for supplying the gas to get into, and the mixer is used for mixing air, EGR waste gas and obtains the mist. The filtering device comprises: a shell and a filter screen. One end of the shell is fixedly connected with the air outlet of the mixer. The filter screen is embedded in one end of the shell. One end of the air inlet connecting pipe is fixedly connected with the other end of the shell, and the other end of the air inlet connecting pipe is fixedly connected with a cylinder cover of the engine. The mixed gas sequentially passes through the filtering device and the air inlet connecting pipe to enter the interior of a cylinder cover of the engine. The filter screen is used for filtering the passing mixed gas and preventing foreign matters from entering the cylinder cover.
In an embodiment of the present invention, the housing has a fan therein, and the fan and the housing are relatively fixed.
In one embodiment of the invention, the screen has a convex spherical profile, and the spherical profile is adjacent to the mixer.
In one embodiment of the present invention, when the mixed gas passes through the fan, the flow of the mixed gas is disturbed, so that the mixed gas can be sufficiently and uniformly mixed.
In an embodiment of the present invention, the housing is made of cast aluminum.
In one embodiment of the present invention, the filter screen is a stainless steel screen or a stainless steel thin plate mesh screen.
In an embodiment of the present invention, the fan is made of cast aluminum.
Compared with the prior art, the gas engine air inlet system has simple and reasonable structure, can reduce the failure rate of engine products, improves the reliability of the engine products, and can also improve the uniformity of mixed gas, thereby improving the performance of the engine products.
Drawings
Fig. 1 is a schematic perspective view of an intake system of a gas engine according to an embodiment of the present invention.
Fig. 2 is a schematic perspective view of a filter device of an intake system of a gas engine according to an embodiment of the present invention.
Fig. 3 is a side view schematically showing a filter device of an intake system of a gas engine according to an embodiment of the present invention.
Description of the main reference numerals:
1-mixer, 11-first air inlet, 12-second air inlet, 13-third air inlet, 14-air outlet, 2-filtering device, 21-shell, 22-filter screen, 23-fan and 3-air inlet connecting pipe.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
Fig. 1 is a schematic perspective view of an intake system of a gas engine according to an embodiment of the present invention. Fig. 2 is a schematic perspective view of a filter device of an intake system of a gas engine according to an embodiment of the present invention. Fig. 3 is a side view schematically showing a filter device of an intake system of a gas engine according to an embodiment of the present invention.
As shown in fig. 1 to 3, a gas engine intake system according to a preferred embodiment of the present invention includes: mixer 1, filter device 2 and air inlet connection 3. The mixer 1 has a first air inlet 11, a second air inlet 12, a third air inlet 13 and an air outlet 14, the first air inlet 11 is used for air to enter, the second air inlet 12 is used for EGR waste gas to enter, the third air inlet 13 is used for fuel gas to enter, and the mixer 1 is used for mixing the air, the EGR waste gas and the fuel gas to obtain mixed gas. The filter device 2 includes: a housing 21 and a screen 22. One end of the housing 21 is fixedly connected to the air outlet 14 of the mixer 1. A screen 22 is mounted on one end of the housing 21. One end of the air inlet connecting pipe 3 is fixedly connected with the other end of the shell 21, and the other end of the air inlet connecting pipe 3 is fixedly connected with a cylinder cover of the engine. Wherein the mixed gas enters the interior of the cylinder head of the engine through the filtering device 2 and the air inlet connecting pipe 3 in sequence. The filter net 22 is used for filtering the passing mixed gas and preventing foreign matters from entering the inside of the cylinder head.
In one embodiment of the present invention, the housing 21 has a fan 23 therein, and the fan 23 is fixed relative to the housing 21. The sieve 22 has a convex spherical profile, and the spherical profile is close to the mixer 1. When the mixed gas passes through the fan 23, the flow of the mixed gas is disturbed, thereby enabling the mixed gas to be sufficiently and uniformly mixed.
In one embodiment of the present invention, the housing 21 is made of cast aluminum. The filter screen 22 is a stainless steel wire mesh or a stainless steel thin plate mesh. The fan 23 is made of cast aluminum.
In practical application, the air, EGR waste gas and fuel gas of the gas engine air inlet system are premixed in the mixer 1, and the mixed gas respectively enters the inside of the engine cylinder head through the filtering device 2, the air inlet connecting pipe 3 and the like. The filtering device 2 consists of a shell 21, a filter screen 22 and fan blades, a nail passing hole and a sealing plane are processed on the shell 21, and the filtering device 2 is installed between two parts of an air inlet air passage (between the mixer 1 and the air inlet connecting pipe 3). In order to block ice and other foreign matters coming along with the intake airflow in front, a filter screen 22 is embedded at the front end of the shell 21, the filter screen 22 is designed into a spherical contour protruding forwards, and the filter screen 22 can be ensured to be stable and not to deform or fall off under the action of the high-speed airflow of the intake air passage. A set of blades (fan 23) is designed in the casing 21, the fan 23 and the casing 21 are relatively fixed, when the engine intake air flow (mixed gas) passes through the fan 23, the air flow direction is changed, the air flow is disturbed, and therefore the gas and the air are fully and uniformly mixed.
In summary, the gas engine intake system of the present invention has the following beneficial effects:
1. the falling ice blocks or other solid impurities can be effectively prevented from entering the cylinder cover of the engine, so that the failure rate of the engine product can be reduced, and the reliability of the engine product can be improved;
2. the uniformity of the gas mixture of the gas engine can be improved, so that the performance of the engine product is improved;
3. the structure is simple and reasonable, the adaptability is strong, and the fuel gas engine can be applied to the existing gas engine products in batches;
4. the structure is stable and reliable, and the original reliability of an engine product cannot be reduced.
In a word, the gas engine air inlet system has simple and reasonable structure, can reduce the failure rate of engine products, improves the reliability of the engine products, and can also improve the uniformity of mixed gas, thereby improving the performance of the engine products.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (7)
1. A gas engine air intake system, comprising:
the mixer is provided with a first air inlet, a second air inlet, a third air inlet and an air outlet, wherein the first air inlet is used for air to enter, the second air inlet is used for EGR waste gas to enter, the third air inlet is used for fuel gas to enter, and the mixer is used for mixing the air, the EGR waste gas and the fuel gas to obtain mixed gas;
a filter device, comprising:
the shell, one end of the said shell is fixedly connected with said air outlet of the said blender; and
a filter screen embedded in the one end of the housing; and
one end of the air inlet connecting pipe is fixedly connected with the other end of the shell, and the other end of the air inlet connecting pipe is fixedly connected with a cylinder cover of the engine;
wherein the mixed gas enters the interior of the cylinder head of the engine through the filter device and the intake adapter in sequence;
the filter screen is used for filtering the passing mixed gas and preventing foreign matters from entering the cylinder cover.
2. The gas engine air intake system of claim 1, wherein the housing has a fan therein, the fan being relatively fixed to the housing.
3. The gas engine air intake system of claim 1, wherein the screen has a convex spherical profile and the spherical profile is proximate the mixer.
4. The gas engine intake system of claim 2, wherein the flow of the mixed gas is disrupted as the mixed gas passes through the fan, thereby enabling the mixed gas to be sufficiently and uniformly mixed.
5. The gas engine air intake system of claim 1, wherein the housing is cast aluminum.
6. The gas engine air intake system of claim 1, wherein the screen is a stainless steel mesh or a stainless steel sheet mesh.
7. The gas engine air intake system of claim 2, wherein the fan is cast aluminum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011236004.1A CN112523906A (en) | 2020-11-09 | 2020-11-09 | Gas engine air intake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011236004.1A CN112523906A (en) | 2020-11-09 | 2020-11-09 | Gas engine air intake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112523906A true CN112523906A (en) | 2021-03-19 |
Family
ID=74979869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011236004.1A Pending CN112523906A (en) | 2020-11-09 | 2020-11-09 | Gas engine air intake system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112523906A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2296407Y (en) * | 1997-03-18 | 1998-11-04 | 姚耀彩 | Purifying fuel saving device for motor vehicle |
| CN102953867A (en) * | 2011-08-29 | 2013-03-06 | 广西玉柴机器股份有限公司 | Engine air inlet pipe |
| CN108425768A (en) * | 2018-06-04 | 2018-08-21 | 广西玉柴机器股份有限公司 | The mixer of integrated combustion gas and EGR |
| CN211448845U (en) * | 2019-09-01 | 2020-09-08 | 襄阳美标朗源动力实业有限公司 | Mixer connecting pipe of giving vent to anger |
-
2020
- 2020-11-09 CN CN202011236004.1A patent/CN112523906A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2296407Y (en) * | 1997-03-18 | 1998-11-04 | 姚耀彩 | Purifying fuel saving device for motor vehicle |
| CN102953867A (en) * | 2011-08-29 | 2013-03-06 | 广西玉柴机器股份有限公司 | Engine air inlet pipe |
| CN108425768A (en) * | 2018-06-04 | 2018-08-21 | 广西玉柴机器股份有限公司 | The mixer of integrated combustion gas and EGR |
| CN211448845U (en) * | 2019-09-01 | 2020-09-08 | 襄阳美标朗源动力实业有限公司 | Mixer connecting pipe of giving vent to anger |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210319 |