CN107676198B - Mounting structure of fuel gas injection valve of engine - Google Patents
Mounting structure of fuel gas injection valve of engine Download PDFInfo
- Publication number
- CN107676198B CN107676198B CN201711142701.9A CN201711142701A CN107676198B CN 107676198 B CN107676198 B CN 107676198B CN 201711142701 A CN201711142701 A CN 201711142701A CN 107676198 B CN107676198 B CN 107676198B
- Authority
- CN
- China
- Prior art keywords
- injection valve
- gas injection
- cylinder head
- flange surface
- fuel gas
- 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.)
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Classifications
-
- 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
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0281—Adapters, sockets or the like to mount injection valves onto engines; Fuel guiding passages between injectors and the air intake system or 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
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0248—Injectors
- F02M21/0278—Port fuel injectors for single or multipoint injection into the air intake system
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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)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention belongs to the technical field of manufacturing and assembling of marine engines, and particularly relates to a gas injection valve mounting structure of an engine. According to the invention, the gas injection valve is directly arranged on the cylinder head of the engine, so that the mounting structure of the gas injection valve is simplified, and the structural stability of the gas injection valve is ensured; according to the invention, the outlet of the injection pipe of the fuel gas injection valve is in a bevel shape facing the inner end of the air inlet pipe, so that fuel gas can be prevented from flowing back in the air inlet pipe.
Description
Technical Field
The invention belongs to the technical field of manufacturing and assembling of marine engines, and particularly relates to a gas injection valve mounting structure of an engine.
Background
The gas injection valve of the gas engine in the prior art is mostly arranged on an air inlet pipeline outside the engine cylinder head, the mounting mode needs to be provided with a special mounting seat or a pipe joint on the air inlet pipeline, the connecting structure is load-bearing, the assembly is inconvenient, the structural stability of the gas injection valve is not guaranteed, and the mounting cost is high.
Disclosure of Invention
The invention aims to provide a fuel gas injection valve mounting structure of an engine, which is convenient for assembling the fuel gas injection valve.
In order to achieve the above purpose, the present invention provides the following technical solutions: a gas injection valve mounting structure of an engine is characterized in that the gas injection valve is mounted on an engine cylinder head, a through hole is formed in the engine cylinder head, the through hole penetrates through an air inlet pipeline inside the cylinder head, and an injection pipe of the gas injection valve penetrates through the through hole and protrudes into the air inlet pipeline inside the cylinder head.
The gas injection valve is fixedly connected with the cylinder head top surface through bolts perpendicular to the first flange surface, the through holes are formed in the cylinder head top surface and the area attached to the first flange surface, the injection pipe penetrates into the through holes from the first flange surface, and a first sealing ring is arranged between the first flange surface and the cylinder head top surface around the injection pipe.
One end of the injection pipe protruding into the air inlet pipeline is in a bevel connection shape, and the bevel connection is arranged towards the inner end of the air inlet pipeline.
The gas injection valve is characterized in that a second flange surface is further arranged on the gas injection valve and perpendicular to the first flange surface, the second flange surface faces the end face of the air inlet of the cylinder head in the same direction, a gas inlet of the gas injection valve is located on the second flange surface, and the second flange surface is used for being connected with a gas supply pipeline.
And a second sealing ring is arranged on the second flange surface around the fuel gas inlet.
The invention has the technical effects that: according to the invention, the gas injection valve is directly arranged on the cylinder head of the engine, so that the mounting structure of the gas injection valve is simplified, and the structural stability of the gas injection valve is ensured; according to the invention, the outlet of the injection pipe of the fuel gas injection valve is in a bevel shape facing the inner end of the air inlet pipe, so that fuel gas can be prevented from flowing back in the air inlet pipe.
Drawings
FIG. 1 is a cross-sectional view of a fuel gas injection valve mounting structure provided by an embodiment of the present invention;
fig. 2 is a schematic perspective view of a fuel gas injection valve according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 and 2, in a gas injection valve mounting structure of an engine, the gas injection valve 20 is mounted on the engine cylinder head 10, a through hole 12 is formed on the engine cylinder head 10, the through hole 12 penetrates into an air intake pipeline 11 inside the cylinder head 10, and an injection pipe 21 of the gas injection valve 20 penetrates through the through hole 12 and protrudes into the air intake pipeline 11 inside the cylinder head 10. The gas injection valve 20 is provided with a first flange surface 23 attached to the top surface of the cylinder head 10, the gas injection valve 20 is fixedly connected with the top surface of the cylinder head 10 through bolts perpendicular to the first flange surface 23, the through hole 12 is formed in the area attached to the first flange surface 23 on the top surface of the cylinder head 10, the injection pipe 21 penetrates into the through hole 12 from the first flange surface 23, and a first sealing ring 25 is arranged between the first flange surface 23 and the top surface of the cylinder head 10 around the injection pipe 21. The end of the injection pipe 21 protruding into the air inlet pipeline 11 is in a bevel connection shape, and the bevel connection is arranged towards the inner end of the air inlet pipeline 11. The gas injection valve 20 is further provided with a second flange surface 24, the second flange surface 24 is perpendicular to the first flange surface 23, the second flange surface 24 faces the air inlet end surface of the cylinder head 10 in the same direction, the gas inlet 22 of the gas injection valve 20 is located on the second flange surface 24, and the second flange surface 24 is used for being connected with a gas supply pipeline. A second sealing ring 26 is arranged on the second flange surface 24 around the gas inlet 22. According to the invention, the gas injection valve 20 is directly arranged on the cylinder head 10 of the engine, so that the installation structure of the gas injection valve 20 is simplified, and the structural stability of the gas injection valve 20 is ensured; in the invention, the outlet of the injection pipe 21 of the fuel gas injection valve 20 is in a bevel shape facing the inner end of the air inlet pipeline 11, so that the fuel gas can be prevented from flowing back in the air inlet pipeline.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (2)
1. The utility model provides a gas injection valve mounting structure of engine which characterized in that: the fuel gas injection valve (20) is arranged on the engine cylinder head (10), a through hole (12) is formed in the engine cylinder head (10), the through hole (12) penetrates into an air inlet pipeline (11) in the cylinder head (10), an injection pipe (21) of the fuel gas injection valve (20) penetrates through the through hole (12) and protrudes into the air inlet pipeline (11) in the cylinder head (10), a first flange surface (23) attached to the top surface of the cylinder head (10) is arranged on the fuel gas injection valve (20), the fuel gas injection valve (20) is fixedly connected with the top surface of the cylinder head (10) through a bolt perpendicular to the first flange surface (23), the through hole (12) is formed in an area attached to the first flange surface (23) on the top surface of the cylinder head (10), the injection pipe (21) penetrates into the through hole (12) from the first flange surface (23), a first flange surface (25) is arranged around the injection pipe (21) between the first flange surface (23) and the top surface of the cylinder head (10), the injection pipe (21) is provided with a first inclined inlet port (24) towards the air inlet pipeline (11), the second flange surface (24) is perpendicular to the first flange surface (23), the second flange surface (24) faces the air inlet end surface of the cylinder head (10) in the same direction, the gas inlet (22) of the gas injection valve (20) is located on the second flange surface (24), and the second flange surface (24) is used for being connected with a gas supply pipeline.
2. The gas injection valve mounting structure according to claim 1, wherein: a second sealing ring (26) is arranged on the second flange surface (24) around the fuel gas inlet (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711142701.9A CN107676198B (en) | 2017-11-17 | 2017-11-17 | Mounting structure of fuel gas injection valve of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711142701.9A CN107676198B (en) | 2017-11-17 | 2017-11-17 | Mounting structure of fuel gas injection valve of engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107676198A CN107676198A (en) | 2018-02-09 |
| CN107676198B true CN107676198B (en) | 2023-09-01 |
Family
ID=61149912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711142701.9A Active CN107676198B (en) | 2017-11-17 | 2017-11-17 | Mounting structure of fuel gas injection valve of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107676198B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11303685A (en) * | 1998-04-23 | 1999-11-02 | Keihin Corp | Electromagnetic gas fuel injection valve |
| JP2010203348A (en) * | 2009-03-04 | 2010-09-16 | Toyota Motor Corp | Fuel injection device for internal combustion engine |
| CN104295418A (en) * | 2014-09-22 | 2015-01-21 | 广西玉柴机器股份有限公司 | Multi-point injection intake pipe of gas engine |
| CN105179111A (en) * | 2015-09-09 | 2015-12-23 | 哈尔滨工程大学 | Gas/dual-fuel engine intake manifold gas injection device |
| CN205001085U (en) * | 2015-09-09 | 2016-01-27 | 哈尔滨工程大学 | Gaseous dual -fuel engine air intake manifold gas jet device |
| CN106050479A (en) * | 2016-06-13 | 2016-10-26 | 重庆潍柴发动机有限公司 | Gas injection valve and injection pipe structure and installation and arrangement method |
-
2017
- 2017-11-17 CN CN201711142701.9A patent/CN107676198B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11303685A (en) * | 1998-04-23 | 1999-11-02 | Keihin Corp | Electromagnetic gas fuel injection valve |
| JP2010203348A (en) * | 2009-03-04 | 2010-09-16 | Toyota Motor Corp | Fuel injection device for internal combustion engine |
| CN104295418A (en) * | 2014-09-22 | 2015-01-21 | 广西玉柴机器股份有限公司 | Multi-point injection intake pipe of gas engine |
| CN105179111A (en) * | 2015-09-09 | 2015-12-23 | 哈尔滨工程大学 | Gas/dual-fuel engine intake manifold gas injection device |
| CN205001085U (en) * | 2015-09-09 | 2016-01-27 | 哈尔滨工程大学 | Gaseous dual -fuel engine air intake manifold gas jet device |
| CN106050479A (en) * | 2016-06-13 | 2016-10-26 | 重庆潍柴发动机有限公司 | Gas injection valve and injection pipe structure and installation and arrangement method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107676198A (en) | 2018-02-09 |
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