CN102128110A - Air inlet device and diesel engine - Google Patents
Air inlet device and diesel engine Download PDFInfo
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- CN102128110A CN102128110A CN201110024438XA CN201110024438A CN102128110A CN 102128110 A CN102128110 A CN 102128110A CN 201110024438X A CN201110024438X A CN 201110024438XA CN 201110024438 A CN201110024438 A CN 201110024438A CN 102128110 A CN102128110 A CN 102128110A
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- air inlet
- inlet pipe
- mixer
- waste gas
- 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
- Y02T10/12—Improving ICE efficiencies
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Abstract
The invention discloses an air inlet device belonging to the technical field of diesel engines. The air inlet device comprises a waste gas inlet pipe and a tubular mixer, wherein one end of the mixer is communicated with an engine air inlet pipe, and the other end of the same is provided with a fresh air inlet; and the gas outlet end of the waste gas inlet pipe extends to the interior of the mixer from the side wall of the mixer and is provided with a plurality of gas outlets for outflow of waste gas. The waste gas exhausted from an exhaust system enters into the waste gas inlet pipe and flows into the mixer through the plurality of gas outlets arranged on the gas outlet end of the waste gas inlet pipe, the waste gas in the waste gas inlet pipe is diverted into a plurality of tiny waste gas flows by the plurality of gas outlets, the tiny waste gas flows can be mixed with fresh air in the mixer more uniformly to ensure that the waste gas and the fresh air form a more uniform mixed gas, and the mixed gas enters the interior of an air cylinder of the diesel engine through the engine air inlet pipe. The invention also discloses a diesel engine provided with the air inlet device.
Description
Technical field
The present invention relates to Diesel Engine Technique Field, relate in particular to a kind of air inlet system that waste gas and fresh air can be mixed.The invention still further relates to a kind of diesel engine with above-mentioned air inlet system.
Background technique
The noxious emission of motor is an important source of causing pollution of atmosphere, along with the significance of environmental protection problem increases day by day, how to reduce Engine's Harmful Emission, has become an important research direction of present motor development.Along with the consumption of world oil goods rises year by year, international oil price is high, the Economy of diesel engine is outstanding day by day, this make diesel engine in power train in vehicle application in occupation of more and more important position, therefore, how to reduce the harmful emission of diesel engine thing, become an important topic of Diesel Engine Technique Field.
At present, in order to reduce the cylinder of diesel engine temperature and to control harmful components ratio in the waste gas, common employing is quoted a part of waste gas and is burnt to the cylinder of diesel engine, reduces the noxious gas emission that diesel engine is discharged according to this, promptly adopts diesel exhaust recirculation to reduce emission of harmful substances.In this scheme, whether waste gas and fresh air mix in the gas handling system, directly have influence on the height of combustion efficiency and emission performance, therefore, the uniformity of having only the mixed gas of control waste gas and fresh air formation can guarantee that just diesel engine has higher combustion efficiency and emission performance preferably.
In the prior art, usually the waste gas that diesel engine exhaust system is discharged is directly introduced in the cylinder, waste gas mixes with fresh air in cylinder, the mixed gas uniformity that this scheme makes waste gas and fresh air form is relatively poor, so make the combustion efficiency of diesel engine lower, emission performance is relatively poor.
Therefore, how to make waste gas can mix comparatively equably, become the technical barrier that those skilled in the art need to be resolved hurrily with fresh air.
Summary of the invention
First purpose of the present invention provides a kind of air inlet system, and this air inlet system can mix waste gas and fresh air comparatively equably.Second purpose of the present invention provides a kind of diesel engine with above-mentioned air inlet system.
In order to realize above-mentioned first purpose, the invention provides a kind of air inlet system, comprise exhaust inlet pipe, mixer in a tubular form, one end of described mixer is communicated with engine air inlet tube, the other end forms fresh air inlet, the outlet side of described exhaust inlet pipe extends in the described mixer from the sidewall of described mixer, and the outlet side of described exhaust inlet pipe is provided with a plurality of air outlet holes for the waste gas outflow.
Preferably, the outlet side of described exhaust inlet pipe is a warp architecture.
Preferably, the end of the outlet side of described exhaust inlet pipe is a hatch frame, and the center line of described hatch frame is parallel with the center line of described mixer.
Preferably, the end of the outlet side of described exhaust inlet pipe is an enclosed construction.
Preferably, the sidewall of the outlet side of described exhaust inlet pipe is provided with described air outlet hole.
Preferably, described exhaust inlet pipe is provided with one-way valve.
Preferably, the fresh air inlet of described mixer is communicated with the air outlet of intercooler.
Preferably, the inlet end of described exhaust inlet pipe is communicated with outlet pipe
Air inlet system provided by the invention comprises exhaust inlet pipe and mixer, one end of mixer is communicated with engine air inlet tube, the other end forms fresh air inlet, the outlet side of exhaust inlet pipe extends in the described mixer from the sidewall of described mixer, and the outlet side of described exhaust inlet pipe is provided with a plurality of air outlet holes for the waste gas outflow.
The waste gas that vent systems is discharged enters in the exhaust inlet pipe, the a plurality of air outlet holes that are provided with through the outlet side of exhaust inlet pipe flow in the mixer, waste gas in the exhaust inlet pipe is split into a plurality of tiny exhaust flows by a plurality of air outlet holes, these tiny exhaust flows can mix comparatively equably with the fresh air in the mixer, make waste gas and fresh air form mixed gas comparatively uniformly, this mixed gas is in engine air inlet tube enters cylinder of diesel engine.Because the uniformity of mixed gas is better, can make diesel engine have higher combustion efficiency and emission performance preferably.
In order to realize above-mentioned second purpose, the present invention also provides a kind of diesel engine, this diesel engine comprises engine air inlet tube and above-mentioned air inlet system, because above-mentioned air inlet system possesses above-mentioned technique effect, the diesel engine with this air inlet system also should possess the corresponding techniques effect.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the air inlet system that invention provided;
Wherein, among Fig. 1:
Embodiment
In order to make those skilled in the art better understand technological scheme of the present invention, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please referring to Fig. 1, Fig. 1 is the structural representation of a kind of embodiment of the air inlet system that invention provided.
As shown in Figure 1, air inlet system provided by the invention comprises exhaust inlet pipe 1, mixer 2, and described exhaust inlet pipe 1 is used to introduce the waste gas that vent systems is discharged, mixer 2 in a tubular form, mixer 2 is used to introduce fresh air; One end of mixer 2 is communicated with engine air inlet tube 3, and the other end forms fresh air inlet, and fresh air can enter in the mixer 2 by fresh air inlet; The outlet side of exhaust inlet pipe 1 extends in the mixer 2 from the sidewall of mixer 2, and the outlet side of exhaust inlet pipe 1 is provided with a plurality of air outlet holes 11 for the waste gas outflow, and exhaust inlet pipe 1 is communicated with mixer 2 by air outlet hole 11.
Fresh air enters in the mixer 2 along direction shown in the horizontal arrow among Fig. 1; The waste gas that vent systems is discharged enters in the exhaust inlet pipe 1, direction shown in the vertical arrow is an exhaust gas flow direction among Fig. 1, waste gas flows in the mixer 2 through a plurality of air outlet holes 11, waste gas in the exhaust inlet pipe 1 is split into a plurality of tiny exhaust flows by a plurality of air outlet holes 11, these tiny exhaust flows can mix comparatively equably with the fresh air in the mixer 2, make waste gas and fresh air form mixed gas comparatively uniformly, this mixed gas enters in the cylinder of diesel engine through engine air inlet tube 3.Because the uniformity of mixed gas is better, can make diesel engine have higher combustion efficiency and emission performance preferably.
In a kind of mode of execution particularly, as shown in Figure 1, the outlet side of exhaust inlet pipe 1 is a warp architecture, because inlet end is positioned at mixer 2, inlet end is arranged to warp architecture, can reduce the fresh air flow resistance, can make fresh air enter in the engine air inlet tube 3 with bigger flow velocity.
Further in the scheme, the end of the outlet side of exhaust inlet pipe 1 is a hatch frame, exhaust inlet pipe 1 can be communicated with mixer 2 by this hatch frame, the center line of this hatch frame can be parallel with the center line of mixer 2, waste gas part in the exhaust inlet pipe 1 can enter in the mixer 2 by air outlet hole 11, unnecessary waste gas can enter by the hatch frame of outlet side in the mixer 2, because the center line of this hatch frame is parallel with the center line of mixer 2, waste gas is identical with the flow direction of fresh air from the direction that hatch frame flows out, and can not influence the flowing velocity of fresh air from the waste gas of hatch frame outflow.
In a kind of concrete mode of execution, air outlet hole 11 is arranged on the sidewall of outlet side of exhaust inlet pipe 1, in the preferred scheme, a plurality of air outlet holes 11 can be evenly distributed and be located on the sidewall of outlet side, and this scheme can make waste gas flow into more equably in the mixer 2.
In the preferred version, oppositely flow into the vent systems of diesel engine, can on exhaust inlet pipe 1, be provided with one-way valve through exhaust inlet pipe 1 in order to prevent the mixed gas in the mixer 2.
In the concrete scheme, for the diesel engine with turbosupercharger, intercooler, the fresh air inlet of mixer 2 can be communicated with the air outlet of intercooler, enters in the mixer 2 after the turbosupercharging of fresh air process, the cooling.
For the diesel engine that only has turbosupercharger, the fresh air inlet of mixer 2 can be communicated with the air outlet of turbosupercharger.
Be appreciated that the present invention does not limit the position that fresh air inlet connected of mixer 2, as long as fresh air is all should be in protection scope of the present invention through the scheme that enters engine air inlet tube 3 behind the mixer 2 again.
In the concrete scheme, the inlet end of exhaust inlet pipe 1 can directly be communicated with outlet pipe; The diesel engine that has intercooler for vent systems; the inlet end of exhaust inlet pipe 1 also can be communicated with the air outlet of intercooler; be appreciated that; the present invention does not limit the position that inlet end connected of exhaust inlet pipe 1, all should be in protection scope of the present invention as long as enter the scheme of engine air inlet tube 3 behind the process exhaust inlet pipe 1 again from the waste gas that vent systems is discharged.
In the foregoing description; the outlet side of exhaust inlet pipe 1 is a warp architecture; air inlet system provided by the invention is not limited thereto; the outlet side of exhaust inlet pipe 1 can also be straight tube structure; also can be irregularly shaped structure, all outlet sides at exhaust inlet pipe 1 are provided with the structure of a plurality of air outlet holes 11 all should be in protection scope of the present invention.
In the foregoing description, the end of the outlet side of exhaust inlet pipe 1 is a hatch frame, the end of the outlet side of exhaust inlet pipe 1 can also be enclosed construction, preferred version, also can on described enclosed construction, establish a plurality of air outlet holes 11, so that comparatively equably the waste gas in the waste gas exhaust pipe is entered in the mixer 2.
The present invention also provides a kind of diesel engine, this diesel engine comprises engine air inlet tube and above-mentioned air inlet system, described mixer is communicated with described engine air inlet tube, because above-mentioned air inlet system possesses above-mentioned technique effect, diesel engine with this air inlet system also should possess the corresponding techniques effect, no longer is described in detail at this.
The above only is the description of the preferred implementation of invention; should be understood that; because the finiteness of literal expression; and objectively have unlimited concrete structure; for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. air inlet system, it is characterized in that, comprise exhaust inlet pipe, mixer in a tubular form, one end of described mixer is communicated with engine air inlet tube, the other end forms fresh air inlet, the outlet side of described exhaust inlet pipe extends in the described mixer from the sidewall of described mixer, and the outlet side of described exhaust inlet pipe is provided with a plurality of air outlet holes for the waste gas outflow.
2. air inlet system according to claim 1 is characterized in that, the outlet side of described exhaust inlet pipe is a warp architecture.
3. air inlet system according to claim 2 is characterized in that, the end of the outlet side of described exhaust inlet pipe is a hatch frame, and the center line of described hatch frame is parallel with the center line of described mixer.
4. air inlet system according to claim 1 is characterized in that, the end of the outlet side of described exhaust inlet pipe is an enclosed construction.
5. according to each described air inlet system of claim 1-4, it is characterized in that the sidewall of the outlet side of described exhaust inlet pipe is provided with described air outlet hole.
6. air inlet system according to claim 1 is characterized in that described exhaust inlet pipe is provided with one-way valve.
7. air inlet system according to claim 1 is characterized in that, the fresh air inlet of described mixer is communicated with the air outlet of intercooler.
8. air inlet system according to claim 1 is characterized in that the inlet end of described exhaust inlet pipe is communicated with outlet pipe.
9. a diesel engine comprises engine air inlet tube, it is characterized in that, also comprises each described air inlet system of claim 1-8, and described mixer is communicated with described engine air inlet tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110024438XA CN102128110A (en) | 2011-01-21 | 2011-01-21 | Air inlet device and diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110024438XA CN102128110A (en) | 2011-01-21 | 2011-01-21 | Air inlet device and diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102128110A true CN102128110A (en) | 2011-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110024438XA Pending CN102128110A (en) | 2011-01-21 | 2011-01-21 | Air inlet device and diesel engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN102128110A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869110A (en) * | 2018-06-29 | 2018-11-23 | 重庆长安汽车股份有限公司 | A kind of EGR conduit structure being cooperatively connected with plastic air intake manifold |
| CN109072785A (en) * | 2016-03-11 | 2018-12-21 | Mtu腓特烈港有限责任公司 | For importing the conveying device of recycled exhaust gas |
| CN112041554A (en) * | 2018-04-25 | 2020-12-04 | 雷诺股份公司 | Air inlet circuit connector |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000054915A (en) * | 1998-08-10 | 2000-02-22 | Isuzu Motors Ltd | Egr device |
| US20020112708A1 (en) * | 1999-07-15 | 2002-08-22 | Jochem Fischer | Fluid feed duct for a hot fluid in a hollow structure |
| US20050183704A1 (en) * | 2004-02-25 | 2005-08-25 | Masayoshi Usui | Supercharging system for internal combustion engine |
| CN101321944A (en) * | 2005-11-29 | 2008-12-10 | 沃尔沃拉斯特瓦格纳公司 | Exhaust gas recirculation mixer used for turbocharging internal combustion engine |
| CN201963432U (en) * | 2011-01-21 | 2011-09-07 | 潍柴动力股份有限公司 | Air suction device and diesel engine |
-
2011
- 2011-01-21 CN CN201110024438XA patent/CN102128110A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000054915A (en) * | 1998-08-10 | 2000-02-22 | Isuzu Motors Ltd | Egr device |
| US20020112708A1 (en) * | 1999-07-15 | 2002-08-22 | Jochem Fischer | Fluid feed duct for a hot fluid in a hollow structure |
| US20050183704A1 (en) * | 2004-02-25 | 2005-08-25 | Masayoshi Usui | Supercharging system for internal combustion engine |
| CN101321944A (en) * | 2005-11-29 | 2008-12-10 | 沃尔沃拉斯特瓦格纳公司 | Exhaust gas recirculation mixer used for turbocharging internal combustion engine |
| CN201963432U (en) * | 2011-01-21 | 2011-09-07 | 潍柴动力股份有限公司 | Air suction device and diesel engine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109072785A (en) * | 2016-03-11 | 2018-12-21 | Mtu腓特烈港有限责任公司 | For importing the conveying device of recycled exhaust gas |
| CN109072785B (en) * | 2016-03-11 | 2021-07-16 | Mtu腓特烈港有限责任公司 | Conveying device for introducing recirculated exhaust gas |
| CN112041554A (en) * | 2018-04-25 | 2020-12-04 | 雷诺股份公司 | Air inlet circuit connector |
| CN112041554B (en) * | 2018-04-25 | 2023-12-01 | 雷诺股份公司 | Air inlet loop connector |
| CN108869110A (en) * | 2018-06-29 | 2018-11-23 | 重庆长安汽车股份有限公司 | A kind of EGR conduit structure being cooperatively connected with plastic air intake manifold |
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Application publication date: 20110720 |