CN204152690U - Four-stroke gas engine air inlet system - Google Patents
Four-stroke gas engine air inlet system Download PDFInfo
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- CN204152690U CN204152690U CN201420464913.4U CN201420464913U CN204152690U CN 204152690 U CN204152690 U CN 204152690U CN 201420464913 U CN201420464913 U CN 201420464913U CN 204152690 U CN204152690 U CN 204152690U
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- main airway
- air
- gas
- mixed gas
- air flue
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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
Abstract
The utility model relates to four-stroke gas engine air inlet system, particularly relates to four-stroke gas engine two sections of mixed gas air inlet systems and method.It is characterized in that: intake valve is provided with main airway and auxiliary air flue two gas-entered passageways, and main airway is communicated with mixed gas suction tude, and auxiliary air flue is communicated with air intake duct, and auxiliary air flue is wrapped in main airway.Beneficial effect is: reduce motor row temperature, improve air utilization ratio, realizes engine power strengthening and reduces discharge double action.
Description
Technical field
The present invention relates to four-stroke gas engine air inlet system, particularly relate to four-stroke gas engine two sections of mixed gas air inlet systems and method.
Background technique
The traditional method of gas, biogas and natural gas engine is mixed once, and for gas especially low concentration gas, biogas under current conditions, concentration is in change.In order to adapt to this change, two sections of mixed admission technology are proposed herein.
The direct injection being blended in gas port injection or cylinder in traditional cylinder adopts mixed once, suction tude mixed admission is all mixed once in addition, the present invention adopts two sections of mixing, tentatively mixes before first time is blended in and enters suction tude, and second time arrives mixing in cylinder again.
Traditional tracheae that is mixed into is the good gas of premix, and this method row temperature is high, and efficiency low (because firing chamber wall is all mixed gas) row temperature is high, and spray with aditus laryngis in air flue, it needs fuel gas air inlet pressure treatment.Spray each cylinder by traditional aditus laryngis uneven, power swing is large, cylinder directly sprays once, is only applicable to LNG specific occasion, is grow up in theory at lean combustion, and will has special gas cylinder cap.
Method of the present invention, two sections of hybrid technologies, had both kept aditus laryngis to spray advantage, and had possessed again pre-mixed charge advantage, its each cylinder power equalization, efficiency are improved.
Summary of the invention
The object of the invention is to realize when intake valve is opened air inlet and mixed gas air inlet is successively carried out, make the gas retarded admission (being introduced into air) of mixed gas suction tude.The gas pressure of air intake duct is greater than the gas pressure of mixed gas suction tude, when intake valve is opened, the air of air intake duct first enters firing chamber in advance, firing chamber surrounding is made to have individual air film, be opened to a certain degree at intake valve, tow channel gas is inflated simultaneously in cylinder again, at intake valve close to when closing, intake valve aditus laryngis has individual compressional wave, make the gas of mixed gas suction tude by compression, the air pressure of adding air intake duct is greater than the air pressure of mixed gas suction tude, makes the gas circuit of mixed gas suction tude close in advance under the double action of two kinds of pressure.
Mixed gas suction tude is furnished with pressure servo modulating valve, regulates the retarded admission time of the gas of mixed gas suction tude.
A kind of four-stroke gas engine air inlet method, is characterized in that, comprising:
When intake valve is opened, first the air of air intake duct first enters firing chamber by auxiliary air flue, be opened to a certain degree at intake valve, the mixed gas of mixed gas suction tude is inflated in cylinder by the air mixing of main airway and auxiliary air flue, at intake valve close to when closing, the gas circuit of main airway is closed in advance.
Described a kind of four-stroke gas engine air inlet method, is characterized in that, also comprise:
Pressure transmission pipe sends the gas pressure of special position in main airway to pressure transducer, and the SC sigmal control electric butterfly valve of pressure transducer regulates the gas flow of the gas flow main airway in mixed gas suction tude.
A kind of four-stroke gas engine air inlet system, is characterized in that: intake valve is provided with main airway and auxiliary air flue two gas-entered passageways, and main airway is communicated with mixed gas suction tude, and auxiliary air flue is communicated with air intake duct, and auxiliary air flue is wrapped in main airway.
Described a kind of four-stroke gas engine air inlet system, it is characterized in that: main airway is communicated with by an electric butterfly valve with mixed gas suction tude, arrange pressure transmission pipe in main airway, pressure transmission pipe connecting sensor, described electric butterfly valve is controlled by the signal of described sensor.
The invention has the beneficial effects as follows: reduce motor row temperature, improve air utilization ratio, realize engine power strengthening and reduce discharge double action.
Accompanying drawing explanation
Fig. 1 is structure principle chart of the present invention.
Position during Fig. 2 IC Intake Valve Closes, in auxiliary air flue, air pressure is greater than main airway mixture pressure, and air is accumulated in intake valve aditus laryngis.
Fig. 3 intake valve ajar position, now exhaust valve to be ready cutting out, and the air of auxiliary air flue enters scavenging in cylinder, stops the mixed gas of main airway simultaneously.
Fig. 4 intake valve continues to open, exhaust valve closing, and the air of auxiliary air flue all enters cylinder, and the mixed gas of main airway arrives intake valve aditus laryngis simultaneously.
Fig. 5 intake valve continues to open until open completely, and the air of auxiliary air flue and the mixed gas of main airway enter cylinder simultaneously.
Fig. 6 intake valve is close to closing, and the gas port of the mixed gas of main airway at main airway blocks again by the air of auxiliary air flue, only has the air of auxiliary air flue to continue to inflate in cylinder, till inlet close.
01 piston, 02 intake valve, 03 air valve seat ring, 04 cylinder head, 05 is the volume above inlet valve seat ring 03 and between main airway 07,06 auxiliary jet pipe, 07 main airway, 08 auxiliary air flue, 09 transition plate, 10 air intake ducts, 11 pressure transmission pipes, 12 pressure transducers, 13 electric butterfly valves, 15 mixed gas house stewards, 16 exhaust valves.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is structure principle chart of the present invention.
Piston 01 there is intake valve 02, air valve seat ring 03 to be arranged in cylinder head 04,05 is the volume above inlet valve seat ring 03 and between main airway 07,06 is the auxiliary jet pipe of auxiliary air flue 08, main airway 07 connects mixed gas house steward 15, transition plate 09 isolates main airway 07 and auxiliary air flue 08, air intake duct 10 connects auxiliary air flue 08, the gas pressure of main airway 07 special position is transferred to pressure transducer 12 by the head of pressure transmission pipe 11, electric butterfly valve 13 is arranged between main airway 07 and mixed gas house steward 15, and electric butterfly valve 13 is controlled by the signal of pressure transducer 12.Main airway 07 is included among auxiliary air flue 08.
Its working procedure:
When intake valve 02 is closed, air enters auxiliary air flue 08 by air intake duct 10, air pressure is greater than the mixture pressure of main airway, the mixed gas of main airway 07 is subject to the air compressing of auxiliary air flue 08, open the initial stage at intake valve 02, the air of auxiliary air flue 08 enters firing chamber by intake valve 02, enters into a certain degree at air, the mixed gas of main airway 07 also arrives volume 05 place, and air and mixed gas mix and enter cylinder by intake valve 02.Before intake valve 02 is closed, auxiliary air flue air pressure is greater than main airway mixture pressure, and mixed gas blocks again at main airway special position (head of pressure transmission pipe) by air, only has auxiliary air flue air to enter cylinder, ensures that above chamber wall be air.
Position when Fig. 2 intake valve 02 is closed, in auxiliary air flue 08, air pressure is greater than main airway 07 mixture pressure, and air is accumulated in intake valve aditus laryngis.
Fig. 3 intake valve 02 ajar position, now exhaust valve 16 to be ready cutting out, and the air of auxiliary air flue 08 enters scavenging in cylinder, stops the mixed gas of main airway 07 simultaneously.
Fig. 4 intake valve 02 continues to open, and exhaust valve 16 cuts out, and the air of auxiliary air flue 08 all enters cylinder, and the mixed gas of main airway 07 arrives intake valve aditus laryngis simultaneously.
Fig. 5 intake valve 02 continues to open until open completely, and the air of auxiliary air flue 08 and the mixed gas of main airway 07 enter cylinder simultaneously.
Fig. 6 intake valve 02 is close to closing, and the gas port of the mixed gas of main airway 07 at main airway 07 blocks again by the air of auxiliary air flue 08, only has the air of auxiliary air flue 08 to continue to inflate in cylinder, till suction port 02 is closed.
Said method is implementation methods on cylinder bore 190: arrange two main airways in each cylinder head; Each main airway is from air valve seat ring mouth 10-80mm, and auxiliary air flue is two-way and communication channel, is connected after gathering with transition plate, and air intake duct is connected with the transition plate that cylinder head fills respectively with mixed gas house steward.After the method is implemented, row's temperature declines 30 DEG C ~ 50 DEG C, and the lower power of equal row's temperature improves 20 ~ 30%.
Claims (2)
1. a four-stroke gas engine air inlet system, is characterized in that: intake valve is provided with main airway and auxiliary air flue two gas-entered passageways, and main airway is communicated with mixed gas suction tude, and auxiliary air flue is communicated with air intake duct, and auxiliary air flue is wrapped in main airway.
2. described a kind of four-stroke gas engine air inlet system according to claim 1, it is characterized in that: main airway is communicated with by an electric butterfly valve with mixed gas suction tude, in main airway, pressure transmission pipe is set, pressure transmission pipe connecting sensor, described electric butterfly valve is controlled by the signal of described sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420464913.4U CN204152690U (en) | 2014-08-18 | 2014-08-18 | Four-stroke gas engine air inlet system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420464913.4U CN204152690U (en) | 2014-08-18 | 2014-08-18 | Four-stroke gas engine air inlet system |
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| Publication Number | Publication Date |
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| CN204152690U true CN204152690U (en) | 2015-02-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420464913.4U Active CN204152690U (en) | 2014-08-18 | 2014-08-18 | Four-stroke gas engine air inlet system |
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| CN (1) | CN204152690U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131904A (en) * | 2014-08-18 | 2014-11-05 | 朱裕丰 | Four-stroke gas engine gas inlet method and device |
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2014
- 2014-08-18 CN CN201420464913.4U patent/CN204152690U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104131904A (en) * | 2014-08-18 | 2014-11-05 | 朱裕丰 | Four-stroke gas engine gas inlet method and device |
| CN104131904B (en) * | 2014-08-18 | 2017-04-12 | 朱裕丰 | Four-stroke gas engine gas inlet method and device |
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