CN205422983U - Multi -point injection natural gas engine inlet structure - Google Patents
Multi -point injection natural gas engine inlet structure Download PDFInfo
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- CN205422983U CN205422983U CN201620106390.5U CN201620106390U CN205422983U CN 205422983 U CN205422983 U CN 205422983U CN 201620106390 U CN201620106390 U CN 201620106390U CN 205422983 U CN205422983 U CN 205422983U
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- natural gas
- air intake
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- inlet manifold
- air
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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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Abstract
The utility model belongs to the technical field of natural gas engine, especially, relate to a multi -point injection natural gas engine inlet structure, including air intake duct and natural gas air track, be equipped with air intlet on air intake duct, be equipped with natural gas import on natural gas air track, still the interval is equipped with a plurality of air intake manifold on air intake duct, and a plurality of air intake manifold communicate with air intake duct respectively, correspond every air intake manifold punishment and do not be equipped with a nozzle on natural gas air track, nozzle one end and natural gas air track intercommunication, the other end and air intake manifold intercommunication have concatenated the solenoid valve on the nozzle, the during operation, the natural gas is direct directly to get into the cylinder after getting into air intake manifold and air mixing by the nozzle, but has concatenated solenoid valve control switch on the nozzle, can realize cylinder air feed at regular time and quantity, has solved that engine cylinder work uniformity is poor, engine transient response slow, has discharged HC ( hydrocarbon ) concentration height and the problem of the waste natural gas in the gas.
Description
Technical field
The utility model belongs to natural gas engine technical field, particularly relates to a kind of multi-point injection natural gas engine air intake structure.
Background technology
At present, the natural gas engine air intake structure of domestic market application is premixed air inlet, natural gas enters air inlet pipe after being mixed by blender with air, distribute to each cylinder by inlet manifold the most again be operated, this air intake structure existing problems are as follows: uneven owing to entering the mixed gas of difference cylinder, and cylinder operation uniformity can be caused poor；Due to natural gas first air inlet mixer, then enter cylinder by intake elbow, air inlet pipe, inlet manifold, engine power output so can be caused to exist delayed, directly affect the acceleration of vehicle, cause transient response slow；Due to premixed air intake structure all jet in the whole course of work of engine, when valve overlap, the natural gas in sprayed into cylinder can be caused directly to escape, and cause natural gas to be wasted.Therefore it is badly in need of researching and developing a kind of new air intake structure, improves above-mentioned problem.
Utility model content
The purpose of this utility model is to provide a kind of multi-point injection natural gas engine air intake structure, air is directly entered cylinder with natural gas after inlet manifold mixes, cylinder can be realized supply at regular time and quantity, it is intended to the problem solving that cylinder operation uniformity is poor, HC (hydrocarbon) concentration in engine transient low-response, discharge gas is high and wasting natural gas.
The utility model is realized in, a kind of multi-point injection natural gas engine air intake structure, described multi-point injection natural gas engine air intake structure, including air intake duct and natural gas gas rail, described air intake duct is provided with air intlet, described natural gas gas rail is provided with Imported gas；Also being interval with multiple inlet manifold on described air intake duct, multiple described inlet manifold connect with described air intake duct respectively；Being respectively equipped with a nozzle at corresponding each described inlet manifold on described natural gas gas rail, described nozzle one end connects with described natural gas gas rail, and the other end connects with described inlet manifold, is serially connected with magnetic valve on described nozzle.
Improving as one, multiple described inlet manifold are disposed side by side on the same side of described air intake duct, and described natural gas gas rail is arranged along the orientation of multiple described inlet manifold.
Improve as one, between described natural gas gas rail with each corresponding described inlet manifold, be respectively equipped with attachment structure.
Improve as one, described attachment structure includes and described natural gas gas rail is wholely set engaging lug, the connector being connected between described engaging lug and described inlet manifold.
Improving as one, described engaging lug is provided with two, the corresponding both sides being arranged on described natural gas gas rail；Described connector is bolt, threadeds through described engaging lug with described inlet manifold.
Improving as one, described Imported gas is arranged on the middle position of multiple described nozzle.
Improving as one, described inlet manifold is provided with six, and what described nozzle was corresponding is provided with six.
Improving as one, connecting on described air intlet has intake elbow.
Owing to have employed technique scheme, the multi-point injection natural gas engine air intake structure that the utility model provides includes air intake duct and natural gas gas rail, is provided with air intlet, is provided with Imported gas on natural gas gas rail on air intake duct；Also being interval with multiple inlet manifold on air intake duct, multiple inlet manifold connect with air intake duct respectively；Being respectively equipped with a nozzle on natural gas gas rail at corresponding each inlet manifold, nozzle one end connects with natural gas gas rail, and the other end connects with inlet manifold, is serially connected with magnetic valve on nozzle；During work, air enters air intake duct and is respectively enterd inlet manifold by air intake duct again, natural gas is entered natural gas gas rail by Imported gas, entering back into nozzle, nozzle enter inlet manifold, air is directly entered cylinder with natural gas after inlet manifold mixes, natural gas is directly entered inlet manifold by nozzle and enters back into cylinder, make combustion gas enter cylinder more direct, make engine moment send higher moment of torsion, improve the transient response performance of engine；Nozzle is serially connected with magnetic valve, nozzle can be controlled and open the shut-in time, realize supplying at regular time and quantity to cylinder natural gas with this, would not jet always in the whole course of work of engine, the natural gas spraying in cylinder when valve overlap can be avoided directly to escape, cause natural gas to be wasted；Can realize cylinder is supplied at regular time and quantity natural gas, can effectively improve natural gas distribution uniformity coefficient, improve cylinder operation uniformity.
In sum, during the work of multi-point injection natural gas engine air intake structure, natural gas is directly entered after inlet manifold mixes with air by nozzle and is directly entered cylinder, nozzle is serially connected with magnetic valve controllable switch, cylinder can be realized supply at regular time and quantity, solve that engine air cylinder working uniformity is poor, HC (hydrocarbon) concentration in engine transient low-response, discharge gas is high and the problem of waste natural gas.
Accompanying drawing explanation
Fig. 1 is the main TV structure schematic diagram of multi-point injection natural gas engine air intake structure of the present utility model；
Fig. 2 is the plan structure schematic diagram of multi-point injection natural gas engine air intake structure of the present utility model；
Fig. 3 is the right TV structure schematic diagram of multi-point injection natural gas engine air intake structure of the present utility model；
Wherein, 10, air intake duct, 11, intake elbow, 12, inlet manifold, 20, natural gas gas rail, 21, Imported gas, 22, nozzle.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the utility model, is not used to limit the utility model.
Fig. 1 to Fig. 3 is the schematic diagram of multi-point injection natural gas engine air intake structure of the present utility model, wherein, Fig. 1 shows the main TV structure schematic diagram of multi-point injection natural gas engine air intake structure of the present utility model, Fig. 2 shows it is the plan structure schematic diagram of multi-point injection natural gas engine air intake structure of the present utility model, Fig. 3 shows the right TV structure schematic diagram of multi-point injection natural gas engine air intake structure of the present utility model, for the ease of statement, figure only gives the part relevant to the utility model.
From Fig. 1, Fig. 2 and Fig. 3, this multi-point injection natural gas engine air intake structure includes: air intake duct 10, being provided with air intlet on air intake duct 10, be also interval with multiple inlet manifold 12 on air intake duct 10, multiple inlet manifold 12 connect with air intake duct 10 respectively；Natural gas gas rail 20, being provided with Imported gas 21 on natural gas gas rail 20, be respectively equipped with a nozzle 22 on natural gas gas rail 20 at corresponding each inlet manifold 12, this nozzle 22 one end connects with natural gas gas rail 20, the other end connects with inlet manifold 12, is serially connected with magnetic valve on nozzle 22.
During the work of multi-point injection natural gas engine air intake structure, air enters air intake duct 10 and is respectively enterd inlet manifold 12 by air intake duct 10 again, natural gas is entered natural gas gas rail 20 by Imported gas 21, enter back into nozzle 22, inlet manifold 12 is entered by nozzle 22, air is directly entered cylinder with natural gas after inlet manifold 12 mixes, natural gas is directly entered inlet manifold 12 by nozzle 22 and enters back into cylinder, it is more direct that this gas handling system makes combustion gas enter cylinder, make engine moment send higher moment of torsion, improve the transient response performance of engine；Nozzle 22 is serially connected with magnetic valve, nozzle 22 can be controlled and open the shut-in time, realize supplying at regular time and quantity natural gas to cylinder with this, would not jet always in the whole course of work of engine, the natural gas spraying in cylinder when valve overlap can be avoided directly to escape, cause natural gas to be wasted；Can realize cylinder is supplied at regular time and quantity natural gas, can effectively improve natural gas distribution uniformity coefficient, improve cylinder operation uniformity.
In the present embodiment, multiple inlet manifold 12 are disposed side by side on the same side of air intake duct 10, and natural gas gas rail 20 is arranged along the orientation of multiple inlet manifold 12；It is respectively equipped with attachment structure, this attachment structure includes and natural gas gas rail 20 is wholely set engaging lug, the connector being connected between engaging lug and inlet manifold 12 between natural gas gas rail 20 with each corresponding inlet manifold 12.
Engaging lug is provided with two, the corresponding both sides being arranged on natural gas gas rail 20；Connector is bolt, threadeds through engaging lug with inlet manifold 12.
In the present embodiment, Imported gas 21 is arranged on the middle position of multiple nozzle 22.
In the present embodiment, inlet manifold 12 is provided with six, nozzle 22 correspondence be provided with six.
In the present embodiment, entering for the ease of air, connecting on air intlet has intake elbow 11, and extraneous air enters air intake duct 10 by intake elbow 11, then is respectively enterd multiple inlet manifold 12 by air intake duct 10.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all any amendment, equivalent and improvement etc. made within spirit of the present utility model and principle, within should be included in protection domain of the present utility model.
Claims (8)
1. a multi-point injection natural gas engine air intake structure, including air intake duct and natural gas gas rail, described air intake duct is provided with air intlet, described natural gas gas rail is provided with Imported gas, it is characterized in that, also being interval with multiple inlet manifold on described air intake duct, multiple described inlet manifold connect with described air intake duct respectively；Being respectively equipped with a nozzle at corresponding each described inlet manifold on described natural gas gas rail, described nozzle one end connects with described natural gas gas rail, and the other end connects with described inlet manifold, is serially connected with magnetic valve on described nozzle.
Multi-point injection natural gas engine air intake structure the most according to claim 1, it is characterised in that multiple described inlet manifold are disposed side by side on the same side of described air intake duct, described natural gas gas rail is arranged along the orientation of multiple described inlet manifold.
Multi-point injection natural gas engine air intake structure the most according to claim 2, it is characterised in that be respectively equipped with attachment structure between described natural gas gas rail with each corresponding described inlet manifold.
Multi-point injection natural gas engine air intake structure the most according to claim 3, it is characterised in that described attachment structure includes and described natural gas gas rail is wholely set engaging lug, the connector being connected between described engaging lug and described inlet manifold.
Multi-point injection natural gas engine air intake structure the most according to claim 4, it is characterised in that described engaging lug is provided with two, the corresponding both sides being arranged on described natural gas gas rail；Described connector is bolt, threadeds through described engaging lug with described inlet manifold.
6. according to the multi-point injection natural gas engine air intake structure described in any one of claim 2 to 5, it is characterised in that described Imported gas is arranged on the middle position of multiple described nozzle.
Multi-point injection natural gas engine air intake structure the most according to claim 6, it is characterised in that described inlet manifold is provided with six, and what described nozzle was corresponding is provided with six.
Multi-point injection natural gas engine air intake structure the most according to claim 1, it is characterised in that connect on described air intlet and have intake elbow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620106390.5U CN205422983U (en) | 2016-02-02 | 2016-02-02 | Multi -point injection natural gas engine inlet structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620106390.5U CN205422983U (en) | 2016-02-02 | 2016-02-02 | Multi -point injection natural gas engine inlet structure |
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| CN205422983U true CN205422983U (en) | 2016-08-03 |
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| CN201620106390.5U Active CN205422983U (en) | 2016-02-02 | 2016-02-02 | Multi -point injection natural gas engine inlet structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223195A (en) * | 2018-01-22 | 2018-06-29 | 哈尔滨工程大学 | A kind of solenoid valve protection type dual fuel engine combustion gas air-channel system and control method |
-
2016
- 2016-02-02 CN CN201620106390.5U patent/CN205422983U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223195A (en) * | 2018-01-22 | 2018-06-29 | 哈尔滨工程大学 | A kind of solenoid valve protection type dual fuel engine combustion gas air-channel system and control method |
| CN108223195B (en) * | 2018-01-22 | 2020-09-11 | 哈尔滨工程大学 | Electromagnetic valve protection type fuel gas circuit system of dual-fuel engine and control method |
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