CN101608587A - Resonant intake tube of natural gas engine - Google Patents
Resonant intake tube of natural gas engine Download PDFInfo
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- CN101608587A CN101608587A CNA2009100725594A CN200910072559A CN101608587A CN 101608587 A CN101608587 A CN 101608587A CN A2009100725594 A CNA2009100725594 A CN A2009100725594A CN 200910072559 A CN200910072559 A CN 200910072559A CN 101608587 A CN101608587 A CN 101608587A
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- intake manifold
- resonant cavity
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- intake
- natural gas
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Abstract
The present invention is to provide a kind of resonant intake tube of natural gas engine.Comprise resonant cavity, be positioned at the intake manifold on resonant cavity top, be positioned at the intake manifold of resonant cavity bottom; The side wall surface that resonant cavity is connected with the intake manifold is shaped as one section arc surface, whole resonant cavity is crescent shape, four intake manifold along through intake manifold's center line and with perpendicular plane, two crescent shape sides of resonant cavity symmetry in twos, the length of two intake manifold at middle part is greater than the length of the intake manifold of both sides, and air equates from intake manifold's path length that the outlet of each intake manifold flows through that enters the mouth.The resonance effect that this resonant intake tube not only can make full use of air inlet improves the motor charging efficiency, and can improve the air inlet nonuniformity of natural gas engine.
Description
(1) technical field
The present invention relates to technical field of engines, be specifically related to a kind of resonant intake tube of natural gas engine structure.
(2) background technique
Energy shortage and environmental pollution problem day by day seriously force the positive research engine energy-saving technology of automaker, develop efficient after-treatment device, try to explore the oil replacement energy.Rock gas becomes the first-selection of automobile alternative energy source with the advantage of its aboundresources and combustion cleaning.Yet rock gas is a gaseous fuel, and gaseous fuel can take certain air inlet charge volume when adopting intake duct to form mixed gas, and the air quantity that enters cylinder is reduced, so the specific power of natural gas engine is usually than petrol engine and diesel engine low about 10%.Because in the suction tude of four stroke engine, the periodicity of intake valve opens and closes and the to-and-fro motion of piston makes the gas in the suction tude present intermittent flowing, produce strong gas pressure wave phenomenon simultaneously, the intake valve place can produce the pressure surge of certain amplitude in the intake process, this pressure wave is propagated along suction tude with velocity of sound, and past interflection between suction tude opening end and intake valve, if can carry out appropriate design to air intake system structure, just there is a malleation crest to turn back to intake valve before making next circulation IC Intake Valve Closes, so just can push cylinder to more gas, reach the effect of supercharging, yet because the different air quantities that enter each cylinder that can make with the pressure surge effect of flow losses in each cylinder suction tude there are differences, each cylinder air is different with the mixing of fuel oil, organizing of combustion process is also different, with causing the combustion process of each cylinder to produce difference, directly influence the working stability of motor, Economy and emission performance.
(3) summary of the invention
The object of the present invention is to provide and a kind ofly can improve the natural gas engine charging efficiency, improve the engine charge nonuniformity, thereby improve the resonant intake tube of natural gas engine of engine power performance, Economy and emission performance.
The object of the present invention is achieved like this:
A kind of resonant intake tube of natural gas engine comprises resonant cavity, is positioned at the intake manifold on resonant cavity top, is positioned at the intake manifold of resonant cavity bottom; The side wall surface that resonant cavity is connected with the intake manifold is shaped as one section arc surface, whole resonant cavity is crescent shape, four intake manifold along through intake manifold's center line and with perpendicular plane, two crescent shape sides of resonant cavity symmetry in twos, the length of two intake manifold at middle part is greater than the length of the intake manifold of both sides, and air equates from intake manifold's path length that the outlet of each intake manifold flows through that enters the mouth.
The present invention can also comprise some features like this:
1, described intake manifold is made of with the intake manifold hypomere that is connected with the intake manifold epimere the intake manifold epimere that links to each other with resonant cavity, have the first rectangular orifice plate and the second rectangular orifice plate on intake manifold epimere and the intake manifold hypomere respectively, between the two rectangular orifice plates gasket seal is arranged.
2, intake manifold epimere and resonant cavity and the first rectangular orifice plate are cast as one.
3, there is a square flange port that is connected with engine cylinder cover of intake manifold hypomere, and the intake manifold hypomere is that the arcuate segment and an intersegmental part of circular hole is made up of the changeover portion that circular hole converts square hole gradually to by an intersegmental part.
4, the intake manifold is connected with the resonant cavity arc surface with fillet.
The usefulness of this invention: the resonance effect that the resonant intake system tubular construction not only can make full use of air inlet improves the motor charging efficiency, and can improve the air inlet nonuniformity of natural gas engine.
(4) description of drawings
Fig. 1 is an overall construction drawing of the present invention;
Body structure on Fig. 2 resonant intake tube;
Gasket seal between Fig. 3 intake manifold epimere and the intake manifold hypomere;
Segment structure under Fig. 4 intake manifold;
Segment structure under the single intake manifold of Fig. 5.
(5) embodiment
For example the present invention is done description in more detail below in conjunction with accompanying drawing:
A kind of resonant intake tube of natural gas engine, by the intake manifold, resonant cavity and intake manifold constitute, intake manifold's length is 50mm, internal diameter is 60mm, there is a square flange plate to be used to install closure on the intake manifold, intake manifold and resonant cavity are that the fillet of 10mm is connected by radius, the energy loss of minimizing when the intake manifold flows to each manifold, the volume of resonant cavity is 2.5L, the side wall surface that resonant cavity is connected with the intake manifold is shaped as one section arc surface, whole resonant cavity presents crescent shape, four intake manifold along through intake manifold's center line and with perpendicular plane, two crescent shape sides of resonant cavity symmetry in twos, the short manifold length in both sides is 500mm, but air is identical from intake manifold's path length that the outlet of each manifold flows through that enters the mouth.
A kind of resonant intake tube of natural gas engine among Fig. 1, it is by intake manifold 1, and resonant cavity 2 and intake manifold 3～6 constitute.Resonant intake tube is made of two-part: a part is the resonant intake tube upper body, a part is the resonant intake tube lower body, two-part respectively have a rectangular orifice plate 16 and 19, between last orifice body 16 and the following orifice body 19 gasket seal 18 are arranged, as Fig. 2～shown in Figure 4.
Intake manifold 1 internal diameter 7 is 60mm among Fig. 2, and length is 50mm, has a square flange plate 8 to be used to install closure on it, and flange plate 8 length of sides are 100mm, and thickness is 5mm, and the unthreaded hole of four uniform Φ 8 is arranged on the flange plate 8, and heart distance in hole is 76mm; Intake manifold 1 and resonant cavity 2 are that the fillet 9 of 10mm is connected by radius, and intake manifold 1 is positioned at the geometrical center of resonant cavity 2 arc surfaces 17; The volume of resonant cavity 2 is 2.5L, and resonant cavity 2 sides 11 are crescent shape, and the radius of the fillet 10 of resonant cavity 2 is 10mm; Four intake manifold 3～6 are connected with resonant cavity 2, and along through intake manifold's 1 center line and with perpendicular plane, two crescent shape sides of resonant cavity 2 symmetry in twos, both sides manifold 3 and 6 length are 500mm, but air is identical from intake manifold's path length that the outlet of each manifold flows through that enters the mouth, and can improve each cylinder air inlet nonuniformity of natural gas engine; Four intake manifold all are divided into two-part, two-part manifold is 480mm by two length, wide is 80mm, thickness is that 5mm rectangular orifice plate 16 is connected with 19, two orifice plates can also play the effect that increases the resonant intake tube bulk strength simultaneously, four manifolds 12～15 that are arranged in the upper body part promptly directly are connected with orifice plate 16 with resonant cavity 2 at casting process, four manifolds, 20～23 independent castings that are positioned at the lower body part form, and be connected on the orifice plate 19, be arranged in upper body and lower body two-part manifold in installation process according to 12-20,13-21,14-22, the corresponding relation of 15-23 connects.
The manifold of resonant intake tube of natural gas engine lower body part also has a feature: the port that is connected with engine cylinder cover has a square flange 26: the length of side is 60mm, thickness is 5mm, and what have one section 100mm length is that 50mm circular hole 24 is the pipeline 25 of 40mm square hole 27 to the length of side excessively from internal diameter, as shown in Figure 5, this structure helps air is quickened, in intake duct, kinetic energy is converted into pressure potential, thereby improves charging efficiency.
Claims (5)
1, a kind of resonant intake tube of natural gas engine comprises resonant cavity, is positioned at the intake manifold on resonant cavity top, is positioned at the intake manifold of resonant cavity bottom; It is characterized in that: the side wall surface that resonant cavity is connected with the intake manifold is shaped as one section arc surface, whole resonant cavity is crescent shape, four intake manifold along through intake manifold's center line and with perpendicular plane, two crescent shape sides of resonant cavity symmetry in twos, the length of two intake manifold at middle part is greater than the length of the intake manifold of both sides, and air equates from intake manifold's path length that the outlet of each intake manifold flows through that enters the mouth.
2, resonant intake tube of natural gas engine according to claim 1, it is characterized in that: described intake manifold is made of with the intake manifold hypomere that is connected with the intake manifold epimere the intake manifold epimere that links to each other with resonant cavity, have the first rectangular orifice plate and the second rectangular orifice plate on intake manifold epimere and the intake manifold hypomere respectively, between the two rectangular orifice plates gasket seal is arranged.
3, resonant intake tube of natural gas engine according to claim 2 is characterized in that: intake manifold epimere and resonant cavity and the first rectangular orifice plate are cast as one.
4, resonant intake tube of natural gas engine according to claim 3, it is characterized in that: there is a square flange port that the intake manifold hypomere is connected with engine cylinder cover, and the intake manifold hypomere is that the arcuate segment of circular hole and an intersegmental part are made up of the wave band of crossing that circular hole converts square hole gradually to by an intersegmental part.
5, according to any one described resonant intake tube of natural gas engine of claim 1-4, it is characterized in that: the intake manifold is connected with the resonant cavity arc surface with fillet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100725594A CN101608587B (en) | 2009-07-22 | 2009-07-22 | Resonant intake tube of natural gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100725594A CN101608587B (en) | 2009-07-22 | 2009-07-22 | Resonant intake tube of natural gas engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101608587A true CN101608587A (en) | 2009-12-23 |
| CN101608587B CN101608587B (en) | 2011-09-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100725594A Expired - Fee Related CN101608587B (en) | 2009-07-22 | 2009-07-22 | Resonant intake tube of natural gas engine |
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| CN (1) | CN101608587B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678400A (en) * | 2012-06-07 | 2012-09-19 | 哈尔滨工程大学 | Hydraulic drive continuously variable gas inlet system |
| CN102678403A (en) * | 2012-06-07 | 2012-09-19 | 哈尔滨工程大学 | Half-moon wedge shaped resonance intake pipe |
| CN103742317A (en) * | 2013-12-23 | 2014-04-23 | 广西科技大学 | Length variable intake manifold |
| CN103742318A (en) * | 2013-12-23 | 2014-04-23 | 广西科技大学 | Engine air inlet manifold |
| CN103742251A (en) * | 2013-12-23 | 2014-04-23 | 广西科技大学 | Variable air inlet system for engine |
| CN113790112A (en) * | 2021-10-14 | 2021-12-14 | 浙江旭众汽车部件有限公司 | Air-equalizing engine intake manifold |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0656104B2 (en) * | 1989-05-29 | 1994-07-27 | 本田技研工業株式会社 | Intake device for multi-cylinder internal combustion engine |
| CN2516722Y (en) * | 2002-01-24 | 2002-10-16 | 萍乡市科尔发动机有限公司 | Air intake pipe of four-cylinder multipoint electric control petrol engine |
| CN2545378Y (en) * | 2002-06-18 | 2003-04-16 | 上汽集团奇瑞汽车有限公司 | Air intaking and discharging device for automotive engine |
-
2009
- 2009-07-22 CN CN2009100725594A patent/CN101608587B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678400A (en) * | 2012-06-07 | 2012-09-19 | 哈尔滨工程大学 | Hydraulic drive continuously variable gas inlet system |
| CN102678403A (en) * | 2012-06-07 | 2012-09-19 | 哈尔滨工程大学 | Half-moon wedge shaped resonance intake pipe |
| CN102678403B (en) * | 2012-06-07 | 2014-11-05 | 哈尔滨工程大学 | Half-moon wedge shaped resonance intake pipe |
| CN103742317A (en) * | 2013-12-23 | 2014-04-23 | 广西科技大学 | Length variable intake manifold |
| CN103742318A (en) * | 2013-12-23 | 2014-04-23 | 广西科技大学 | Engine air inlet manifold |
| CN103742251A (en) * | 2013-12-23 | 2014-04-23 | 广西科技大学 | Variable air inlet system for engine |
| CN113790112A (en) * | 2021-10-14 | 2021-12-14 | 浙江旭众汽车部件有限公司 | Air-equalizing engine intake manifold |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101608587B (en) | 2011-09-14 |
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Effective date of registration: 20151112 Address after: 15 Heilongjiang, Nangang Province, Nantong street, building No. 258, building, ship, floor, No. 150001 Patentee after: Science Park Development Co., Ltd. of Harbin Engineering University Address before: 150001 Heilongjiang, Nangang District, Nantong street, building No. 145, Harbin Engineering University, Intellectual Property Office Patentee before: Harbin Engineering Univ. |
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Effective date of registration: 20160506 Address after: 150000, Heilongjiang hi tech Industrial Development Zone, Harbin hi tech Pioneer Center Yingbin Road concentration zone on the Russian Garden Building No., balance road 22, 2 Patentee after: HARBIN HACHUAN POWER TECHNOLOGY CO., LTD. Address before: 15 Heilongjiang, Nangang Province, Nantong street, building No. 258, building, ship, floor, No. 150001 Patentee before: Science Park Development Co., Ltd. of Harbin Engineering University |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110914 Termination date: 20190722 |