CN202001088U - Engine and secondary air-supplying device of same - Google Patents
Engine and secondary air-supplying device of same Download PDFInfo
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- CN202001088U CN202001088U CN 201120029931 CN201120029931U CN202001088U CN 202001088 U CN202001088 U CN 202001088U CN 201120029931 CN201120029931 CN 201120029931 CN 201120029931 U CN201120029931 U CN 201120029931U CN 202001088 U CN202001088 U CN 202001088U
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- exhaust gas
- gas channel
- pipeline
- secondary air
- outlet end
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Abstract
The utility model discloses a secondary air-supplying device, which comprises a tail gas channel and a first pipe, wherein the tail gas channel is provided with an inlet end and an outlet end, and the first pipe is embedded in the inlet end of the tail gas channel and gradually narrows from a first large diameter end to a first small diameter end along the direction from the inlet end to the outlet end. Lateral walls of the tail gas channel are provided with air vents which communicates the outside of the tail gas channel and an outlet end of the first pipe, accordingly the secondary air-supplying device can enable the amount of air supplemented to a tail gas purification device to be obviously increased. Further provided is an engine which includes the secondary air-supplying device.
Description
Technical field
The utility model relates to field of mechanical technique, relates to a kind of secondary air compensating device more specifically.The utility model also relates to a kind of motor that comprises above-mentioned secondary air compensating device.
Background technique
Along with rapid economy development, the quantity of Motor Vehicle grows with each passing day, simultaneously, and engine combustion fuel and the pollution problem that brings has become the topic that the world today can not be ignored.
For reducing the harmful exhaust emissions amount of motor to reach the more and more requirement of the Abgasgesetz of strictness, prior art generally adopts three-way catalyst that motor exhaust is carried out purified treatment, reduces nitrogen oxygen, hydrocarbon and carbon monoxide in the tail gas.In the time of with the three-way catalyst cleaning of off-gas, need carry out secondary air compensating to tail gas and participate in reaction, to reduce the hydrocarbon and carbon monoxide in the tail gas so that enough oxygen to be arranged.
The secondary air compensating mode is that a reed-type one-way valve is installed outside outlet pipe or muffler body in the prior art, and the pulse negative pressure that produces when utilizing engine exhaust is carried out tonifying Qi.When in outlet pipe or the silencing apparatus during negative pressure, one-way valve opens, ambient air enters outlet pipe or silencing apparatus; When being malleation in outlet pipe or the silencing apparatus, closed check valve prevents that tail gas is leaked in the air.In this process, because it is short few to produce the time compole of negative pressure in outlet pipe or the silencing apparatus, tonifying Qi effect extreme difference.
In order to reach the exhaust emissions requirement, the consumption that often needs accurately to control engine air-fuel ratio and increase three-way catalyst solves.When control motor initial ejection, air fuel ratio is lower at 0.77～0.85 o'clock hydrocarbon and oxynitrides total release.
And the pulse negative pressure that prior art produces when utilizing engine exhaust is carried out tonifying Qi, its mend into air quantity less, air fuel ratio does not reach above-mentioned standard, therefore, the prior art exhaust emissions is not up to standard.
Therefore, how to increase the air quantity of mending exhaust gas cleaner and become present technique field personnel important technological problems to be solved.
The model utility content
The purpose of this utility model provides a kind of secondary air compensating device, and it can make the air quantity of mending exhaust gas cleaner obviously be increased.The utility model also provides a kind of motor that comprises above-mentioned secondary air compensating device.
For solving the problems of the technologies described above, the utility model provides a kind of secondary air compensating device, comprises the exhaust gas channel with entry end and outlet end, the entry end that is flush-mounted in described exhaust gas channel and is tapered to first pipeline of first miner diameter end along described entry end to described outlet end direction by first bigger diameter end; And but the outlet end of the sidewall of described exhaust gas channel with the outside that makes described exhaust gas channel and described first pipeline keeps the vent of vent ability.
Preferably, the madial wall that is surrounded on described exhaust gas channel is provided with the ventilation groove, and the outlet end of the opening end of described ventilation groove and described first pipeline is arranged at homonymy, the bottom of described ventilation groove communicates with described vent, and cumulative to the distance between the two side of the described groove of bottom direction of described ventilation groove along the opening end of described ventilation groove.
Preferably, described first pipeline also comprises with described first miner diameter end isometrical, and first straight pipeline that extends of the outlet end direction along the entry end of described exhaust gas channel to described exhaust gas channel; Described ventilation groove is arranged at the outlet end of described first straight pipeline.
Preferably, also comprise outlet end direction, and be flush-mounted in second pipeline of the outlet end of described exhaust gas channel by second miner diameter end flaring to the second bigger diameter end along the entry end of described exhaust gas channel to described exhaust gas channel.
Preferably, described first pipeline is removable installed in the madial wall of described exhaust gas channel by the screw thread that matches with described exhaust gas channel; Described second pipeline and described exhaust gas channel are non-removable integral structure.
Preferably, one section described exhaust gas channel between described ventilation groove and described second miner diameter end is second straight pipeline, and the diameter of described second straight pipeline is greater than the diameter of described first straight pipeline.
The utility model also provides a kind of motor, comprise tail gas nozzle, exhaust gas cleaner, also comprise above-mentioned any secondary air compensating device, the entry end of described exhaust gas channel is fixedlyed connected with described tail gas nozzle and is kept tightness, but and the gas inlet end of the outlet end of described exhaust gas channel and described exhaust gas cleaner maintenance vent ability.
The utility model provides a kind of secondary air compensating device, comprises the exhaust gas channel with entry end and outlet end, the entry end that is flush-mounted in described exhaust gas channel and is tapered to first pipeline of first miner diameter end along described entry end to described outlet end direction by first bigger diameter end; And the sidewall of described exhaust gas channel has vent, but this vent makes the outside of described exhaust gas channel and the outlet end of described first pipeline keep vent ability.Need to prove, when the tail gas air-flow sprays into first pipeline at a high speed, the peripheral negative pressuren zone that can form high negative of the air-flow of the outlet end of described first pipeline.But above-mentioned vent and this negative pressuren zone have vent ability, and therefore, described exhaust gas channel peripheral air can be inhaled into exhaust gas channel by described vent, and mixes with the tail gas air-flow, and then enter exhaust gas cleaner and carry out catharsis.So be provided with, the tail gas air-flow endurance is longer, and correspondingly, the air quantity of sneaking in the tail gas air-flow is just many more.Therefore, the secondary air compensating device that provides of the utility model can effectively increase the air quantity of mending exhaust gas cleaner.
In the preferred version of the present utility model, the madial wall that is surrounded on described exhaust gas channel is provided with the ventilation groove, and the opening of described ventilation groove is arranged at the outlet end of described first pipeline, the bottom of described ventilation groove communicates with described vent, and cumulative to the distance between the two side of the described groove of bottom direction of described ventilation groove along the opening end of described ventilation groove.It is big to it is pointed out that this ventilation groove is specially the inner space, the groove structure that opening is less relatively.So be provided with, the negative pressuren zone space that the outlet end tail gas air-flow periphery of first pipeline forms can comprise the inner space of groove, because the inner space of this ventilation groove is bigger, therefore above-mentioned negative pressuren zone space is effectively increased, and the air quantity that enters above-mentioned negative pressuren zone by vent is obviously increased.Therefore, this preferred version can further increase the air quantity of mending exhaust gas cleaner.
The utility model also provides a kind of motor, comprise tail gas nozzle, exhaust gas cleaner, also comprise above-mentioned any secondary air compensating device, the entry end of described exhaust gas channel is fixedlyed connected with described tail gas nozzle and is kept tightness, but and the gas inlet end of the outlet end of described exhaust gas channel and described exhaust gas cleaner maintenance vent ability.The motor that the utility model provides comprises described secondary air compensating device device, and the air quantity that this motor is mended into exhaust gas cleaner can significantly be increased.Its concrete reason and above-mentioned secondary air compensating device to possess the derivation of advantage identical, so this paper repeats no more.
Description of drawings
Fig. 1 is the cross-sectional view of secondary air compensating device in the embodiment;
Fig. 2 is a vent gas treatment flow chart described in this embodiment.
Embodiment
Core of the present utility model provides a kind of secondary air compensating device, and it can make the air quantity of mending exhaust gas cleaner obviously be increased.The utility model also provides a kind of motor that comprises above-mentioned secondary air compensating device.
In order to make those skilled in the art person understand the utility model scheme better, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 1, Fig. 1 is the cross-sectional view of secondary air compensating device in the embodiment.
The secondary air compensating device that is provided in this embodiment comprises the exhaust gas channel 11 with entry end 111 and outlet end 112.The cross section that it is pointed out that exhaust gas channel 11 in this embodiment certainly, also can be other shape for circular, such as ellipse etc.Secondary air compensating device provided in the present embodiment also comprises first pipeline 12 that is flush-mounted in exhaust gas channel 11 entry ends 111, and the shape of cross section that it is pointed out that first pipeline 12 certainly, also can be other shape for circular, such as ellipse etc.First pipeline 12 has first bigger diameter end 121 and first miner diameter end 122, and along the entry end of exhaust gas channel 11 to outlet end 12 directions, first bigger diameter end 121 is tapered to first miner diameter end 122.The sidewall that it is pointed out that exhaust gas channel 11 is provided with vent 113, but and this vent 113 make the outlet end of the space outerpace of exhaust gas channel 11 and first pipeline 12 keep vent ability.
Please refer to Fig. 2, Fig. 2 is a vent gas treatment flow chart described in this embodiment.
It is pointed out that when the tail gas air-flow sprays into first pipeline 12 at a high speed the peripheral negative pressuren zone that can form high negative of the air-flow of the outlet end of first pipeline 12.But above-mentioned vent 113 has vent ability with this negative pressuren zone, and therefore, the outside air of exhaust gas channel 11 can be inhaled into exhaust gas channel 11 by vent 113, and mixes with the tail gas air-flow, and then enters exhaust gas cleaner 16 and purify.
So be provided with, the tail gas air-flow endurance is longer, and correspondingly, the air quantity of sneaking in the tail gas air-flow is just many more.Therefore, the secondary air compensating device that provides of the utility model can effectively increase the air quantity of mending exhaust gas cleaner.
In the preferred version of this embodiment, the outlet end of first pipeline 12 has ventilation groove 114, and the ventilation opening end of groove 114 and the outlet end of first pipeline 12 are arranged at homonymy.It is to be noted, this ventilation groove 114 is around the madial wall that is arranged at exhaust gas channel 11, the opening end of ventilation groove 114 and the outlet end of first pipeline 12 are arranged at homonymy and mean the adjacent setting of outlet end of the outlet end of the groove 114 of ventilating vertically and first pipeline.This ventilation groove 114 can specifically be surrounded by the sidewall of exhaust gas channel 11 and the sidewall of first pipeline 12 jointly, certainly, also can surround by a sidewall by exhaust gas channel 11.The bottom of ventilation groove 114 communicates with vent 113, and the direction of distance along its opening end to the bottom between the two side of ventilation groove 114 is cumulative.
The bottom that it is pointed out that above-mentioned ventilation groove 114 means that along the air through-flow direction air is entered an end of ventilation groove 114 by vent 113; The opening end of ventilation groove 114 means that along the air through-flow direction air is entered an end of exhaust gas channel 11 by ventilation groove 114.
So be provided with, it is big that this ventilation groove 114 is specially the inner space, the groove structure that opening is less relatively.The negative pressuren zone space that the outlet end tail gas air-flow periphery of first pipeline 12 forms can comprise the inner space of groove, because the inner space of this ventilation groove 114 is bigger, therefore above-mentioned negative pressuren zone space is effectively increased, and the air quantity that enters above-mentioned negative pressuren zone by vent 113 is obviously increased.Therefore, the preferred version of this embodiment can further increase the air quantity of mending exhaust gas cleaner.
In the another kind of preferred version of this embodiment, first miner diameter end 122 of first pipeline 12 has one section first straight pipeline 13 identical with first miner diameter end, 122 diameters.It is pointed out that this first straight pipeline originates in the outlet end 112 directions extension of first miner diameter end 122 of first pipeline to exhaust gas channel 11.Above-mentioned ventilation groove 114 is arranged at the outlet end of this first straight pipeline 13.
So be provided with, when tail gas air-flow during through first miner diameter end of first pipeline 12 122 time, because Venturi effect, air-flow is the tapered diameter shape and sprays first miner diameter end 122, when the tail gas air-flow keeps the tapered diameter shape, negative pressuren zone can occur around it.This first straight pipeline 13 can effectively keep the air-flow diameter to be gradually-reducing shape, and the restriction air-flow disperses, and then, help the formation of negative pressuren zone.
Reflux problem occurs in order to suppress the tail gas air-flow, the secondary air compensating device in this embodiment can also comprise second pipeline 14, and this second pipeline 14 is flush-mounted in the outlet end 112 of exhaust gas channel 11, and it has second bigger diameter end 142 and second miner diameter end 141.It is pointed out that along exhaust gas channel 11 entry ends 111 to outlet end 112 directions second miner diameter end, 141 flaring to the second bigger diameter ends 142.
So be provided with, when the tail gas air-flow was sprayed by second bigger diameter end 142, air-flow was diffusion type and sprays second bigger diameter end 142, because fluid has inertia, still was diffusion type after its ejection.So, can effectively stop tail gas to be back to exhaust gas channel 11 by second bigger diameter end 142.
Need to prove, have more assembling capacity in order to make secondary air compensating device provided in the present embodiment, first pipeline, 12 dismountable madial walls that are arranged at exhaust gas channel 11, and second pipeline 14 is an integral structure with exhaust gas channel 11.Certainly, first pipeline 12 can be an integral structure with exhaust gas channel 11 also, second pipeline, 14 dismountable exhaust gas channels 11 that are arranged at.So be provided with, when carrying out assembling work, can at first first pipeline 12 be connected in the spout (not shown) of motor, exhaust gas cleaner 16 is assemblied in exhaust gas channel 11 with first pipeline 12 again with after second pipeline 14 is connected.So be provided with, obviously improved the assembling capacity of secondary air compensating device.
For air and the tail gas that benefit is gone into mixes, secondary air compensating device provided in the present embodiment can also comprise second straight pipeline 15, this second straight pipeline 15 is arranged between the ventilation groove 114 and second miner diameter end 141, and its diameter is greater than the diameter of first straight pipeline 13.Need to prove the part that this second straight pipeline 15 can exhaust gas channel.
So be provided with, air is above-mentioned second straight pipeline 15 along with the tail gas air-flow enters, because its diameter is identical substantially with first straight pipeline 13 by the tail gas air-flow diameter of first straight pipeline, 13 ejections greater than the diameter of first straight pipeline 13.Thereby the diameter of second straight pipeline 15 is greater than entering its inner air-flow diameter, and so, air and tail gas air-flow can have enough spaces to mix, and then, help the processing of tail gas in the exhaust gas cleaner 16.
This embodiment also provides a kind of motor, comprise tail gas nozzle 17, exhaust gas cleaner 16, also comprise each described secondary air compensating device in the above-mentioned embodiment, the entry end 111 of its exhaust gas channel 11 is connected with tail gas nozzle 17, and the outlet end 112 of exhaust gas channel is connected with exhaust gas cleaner 16.
So be provided with, the tail gas that motor produces can enter above-mentioned secondary air compensating device and carry out tonifying Qi, and then, enter and carry out tail gas clean-up in the exhaust gas cleaner 16.Because the secondary air compensating device that the utility model provides can effectively improve the air quantity of mending the tail gas air-flow, therefore, can effectively reduce the harmful gas of engine emission.
More than motor provided by the utility model and secondary air compensating device thereof are described in detail, used specific case herein principle of the present utility model and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (7)
1. secondary air compensating device, it is characterized in that, comprise the exhaust gas channel with entry end and outlet end, the entry end that is flush-mounted in described exhaust gas channel and be tapered to first pipeline of first miner diameter end along described entry end to described outlet end direction by first bigger diameter end; And but the outlet end of the sidewall of described exhaust gas channel with the outside that makes described exhaust gas channel and described first pipeline keeps the vent of vent ability.
2. secondary air compensating device as claimed in claim 1, it is characterized in that, the madial wall that is surrounded on described exhaust gas channel is provided with the ventilation groove, and the outlet end of the opening end of described ventilation groove and described first pipeline is arranged at homonymy, the bottom of described ventilation groove communicates with described vent, and cumulative to the distance between the two side of the described groove of bottom direction of described ventilation groove along the opening end of described ventilation groove.
3. secondary air compensating device as claimed in claim 2 is characterized in that, described first pipeline also comprises with described first miner diameter end isometrical, and first straight pipeline that extends of the outlet end direction along the entry end of described exhaust gas channel to described exhaust gas channel; Described ventilation groove is arranged at the outlet end of described first straight pipeline.
4. secondary air compensating device as claimed in claim 3, it is characterized in that, also comprise outlet end direction by second miner diameter end flaring to the second bigger diameter end, and be flush-mounted in second pipeline of the outlet end of described exhaust gas channel along the entry end of described exhaust gas channel to described exhaust gas channel.
5. secondary air compensating device as claimed in claim 4 is characterized in that, described first pipeline is removable installed in the madial wall of described exhaust gas channel by the screw thread that matches with described exhaust gas channel; Described second pipeline and described exhaust gas channel are non-removable integral structure.
6. a kind of secondary air compensating device as claimed in claim 5 is characterized in that, one section described exhaust gas channel between described ventilation groove and described second miner diameter end is second straight pipeline, and the diameter of described second straight pipeline is greater than the diameter of described first straight pipeline.
7. motor, comprise tail gas nozzle, exhaust gas cleaner, it is characterized in that, also comprise as each described secondary air compensating device of claim 1 to 6, the entry end of described exhaust gas channel is fixedlyed connected with described tail gas nozzle and is kept tightness, but and the gas inlet end of the outlet end of described exhaust gas channel and described exhaust gas cleaner maintenance vent ability.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120029931 CN202001088U (en) | 2011-01-28 | 2011-01-28 | Engine and secondary air-supplying device of same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120029931 CN202001088U (en) | 2011-01-28 | 2011-01-28 | Engine and secondary air-supplying device of same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202001088U true CN202001088U (en) | 2011-10-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120029931 Expired - Fee Related CN202001088U (en) | 2011-01-28 | 2011-01-28 | Engine and secondary air-supplying device of same |
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| Country | Link |
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| CN (1) | CN202001088U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828208A (en) * | 2020-06-12 | 2020-10-27 | 唐山阳光动力科技有限公司 | Ultrasonic atomization fuel auxiliary supply system |
| CN113847124A (en) * | 2021-10-29 | 2021-12-28 | 重庆隆鑫通航发动机制造有限公司 | Universal engine and secondary air inlet intermediate part |
-
2011
- 2011-01-28 CN CN 201120029931 patent/CN202001088U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111828208A (en) * | 2020-06-12 | 2020-10-27 | 唐山阳光动力科技有限公司 | Ultrasonic atomization fuel auxiliary supply system |
| CN113847124A (en) * | 2021-10-29 | 2021-12-28 | 重庆隆鑫通航发动机制造有限公司 | Universal engine and secondary air inlet intermediate part |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20140128 |