CN101070772A - Fluid extraction arrangement for engine air induction system - Google Patents
Fluid extraction arrangement for engine air induction system Download PDFInfo
- Publication number
- CN101070772A CN101070772A CNA2007101032531A CN200710103253A CN101070772A CN 101070772 A CN101070772 A CN 101070772A CN A2007101032531 A CNA2007101032531 A CN A2007101032531A CN 200710103253 A CN200710103253 A CN 200710103253A CN 101070772 A CN101070772 A CN 101070772A
- Authority
- CN
- China
- Prior art keywords
- conduit
- air
- internal
- holes
- combustion engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/30—Arrangements for supply of additional air
- F01N3/32—Arrangements for supply of additional air using air pump
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
- F02M35/10144—Connections of intake ducts to each other or to another device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10373—Sensors for intake systems
- F02M35/10386—Sensors for intake systems for flow rate
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention discloses a fluid suction device for an engine system and an engine. An engine includes an air induction system for providing air to a plurality of cylinders, an exhaust system for conveying exhaust gas from the cylinders, and a secondary air injection (SAI) system for extracting air from the induction system and injecting the air into the exhaust system to promote exhaust gas oxidation and to heat a catalytic converter. The SAI system extracts air from the induction system through a plurality of holes to evenly distribute the effects of the extraction, thereby reducing velocity gradients and turbulence levels around the mass air flow sensor inside the induction system.
Description
Technical field
The present invention relates to have the internal-combustion engine of secondary air injection system, this secondary air injection system gas handling system carries out influence that air suction produce from the gas handling system suction air to be reduced at a plurality of suction points.
Background technique
Air injection reaction (SAI) system be used to internal-combustion engine with the oxidation that promotes unburned hydrocarbons and shorten be right after after engine cold starting during in the catalyst time of turning off the light.The SAI system will guide to the releasing system of the motor in exhaust valve downstream from the air that the gas handling system of motor is aspirated, and wherein air mixes with the unburned hydrocarbons in the exhaust, and impels hydrocarbon and carbon monoxide oxidation.
The air that their supplies enter releasing system aspirates in the major part prior art SAI system all suction point between air-strainer gas handling system and Mass Air Flow sensor.Because the SAI system is work when engine loading is relatively light roughly, so the air rate by the SAI system can be considerably beyond by throttle body and enter the air rate of the intake manifold of motor.In the case, carry out the air-flow field distortion that the air suction can make Mass Air Flow (MAF) sensor by being positioned at far position, SAI suction point downstream by the SAI system.This distortion may judge that the quality air flow rate introducing that enters motor is uncertain to maf sensor.The prior art gas handling system can utilize the correction based on software to compensate the influence of SAI system air suction to the signal of maf sensor generation in the motor calibration.
Summary of the invention
A kind of internal-combustion engine comprises the gas handling system with manifold and conduit.This conduit limits the air flue that is communicated with the manifold fluid.This path is set for air from Atmospheric Transportation to manifold, manifold then with air distribution to a plurality of cylinders.Vent systems has the manifold that is provided for optionally the exhaust conveying being left cylinder.Secondary air injection system is set for air is delivered to vent systems from drawing-in system.
This secondary air injection system is communicated with by a plurality of orifice flow bodies that are formed in the conduit with conduit, and is set for by this a plurality of holes suction air and with air and injects vent systems.By minimizing the influence of SAI air suction, use a plurality of holes can reduce of the influence of SAI system to the quality air flow sensor from the catheter suction air to air-flow field in the drawing-in system.Therefore, compared to the existing system that uses single SAI suction bole, can reduce the unreliability of maf sensor reading greatly.Use a plurality of suction boles also to help to reduce the interior turbulent level of gas handling system.
In the exemplary embodiment, described a plurality of hole is spaced apart equably along the periphery of described conduit.Assembly parts surround conduit with one heart and cooperate to limit ring chamber with conduit.Ring chamber is communicated with the conduit via fluid by a plurality of holes.
In conjunction with the accompanying drawings, to implementing the detailed description of most preferred embodiment of the present invention, can easily understand above-mentioned feature of the present invention and advantage and other features and advantage by following.
Description of drawings
Fig. 1 is the schematic representation of internal-combustion engine, secondary air injection system wherein is set to enter releasing system from the air inlet duct suction air and with air jet; And
Fig. 2 is the schematic cross sectional views that is coupled between secondary air injection system and the air inlet duct.
Embodiment
With reference to figure 1, internal-combustion engine 12 comprises gas handling system 16.As is known to the person skilled in the art, gas handling system 16 comprises air-strainer 20, aspirates and filtered airs 22 by air-strainer 20 from atmosphere.Define such as the conduit 24 of flexible pipe or pipeline air is delivered to intake manifold and plenum chamber 28 with the path that distributes (among Fig. 2 shown in the label 26) from air-strainer 20 cylinder 30.The closure (not shown) is regulated the air quantity that flows into manifold and plenum chamber 28.
But Mass Air Flow sensor 32 places of working are connected to conduit 24 with the quality air flow rate of monitoring by conduit 24.Mass Air Flow sensor 32 will show that the signal of quality air flow rate is passed to the engine control module (not shown).As is known to the person skilled in the art, engine control module is used and is controlled and monitor various engine operation characteristics from the data of Mass Air Flow sensor 32.
Schematically show the position of secondary air injection system 36 injection airs in vent systems.It should be appreciated by those skilled in the art that may expect secondary air injection system 36 as far as possible upstream ground with air jet to vent systems, the exhaust that mixes with secondary air has sufficiently high temperature thus.In the present invention, vent systems comprises whole conduits in exhaust valve downstream, comprises exhaust port (not shown), runner 62 etc.Therefore, for example and within the scope of the invention, be set for the secondary air injection system that air is delivered into vent systems and comprise being set for air jet is entered secondary air injection system in the exhaust port that is formed in the cylinder head.
With reference to figure 2, similar similar parts in the label list diagrammatic sketch 1 wherein, conduit 24 is characterised in that the roughly cross section of ring-type, the path 26 that flows through of air is characterised in that the roughly cross section of ring-type thus.Particularly, conduit 24 is limited with the internal surface 66 that defines path 26, and with respect to the outer surface 68 of internal surface 66.Conduit 24 is limited with from path 26 and extends to the outside of conduit 24 and along the equally distributed each other a plurality of openings of the periphery of conduit 24.Particularly, in description embodiment, conduit 24 is limited with four holes or opening 72A-D, and it radially extends the outside of f to conduit 24 from path 26.Because conduit 24 has annular cross section, opening 72A-D is upwards at interval even in week with respect to conduit.
Although the foregoing description has four opening 72A-D, also can use more or less opening within the scope of the invention.For example, can adopt two openings of (i.e. interval 180 degree) circumferentially evenly at interval.Similarly, also can adopt three openings of (i.e. interval 120 degree) circumferentially evenly at interval.
Come the air of the path 26 of free conduit 24 qualifications to enter chamber or the path 78 that limits by Coupler 48 by opening 72A-D.Air flow to conduit 44 from path 78 then, and the remaining part by secondary air injection system 36 enters gas exhaust manifold 60.Chamber 78 is sealed to prevent that air from leaving chamber 78 by other parts outside the conduit 44 at the axial end portion place of Coupler 48.
Because (particularly by centering on conduit 24) suction air in the evenly spaced a plurality of hole that makes progress in week from a plurality of holes, be distributed to whole catheter section so carry out the effect of air suction from conduit, reduce thus or eliminated air velocity gradient and turbulent level in the gas handling system that may cause by carry out the air suction from single hole.
Implement preference pattern of the present invention though described in detail, the technician in field related to the present invention can expect falling in the claims scope, be used to implement various alternate design of the present invention and embodiment.
Claims (9)
1. internal-combustion engine comprises:
Gas handling system, the conduit that comprises intake manifold and limit the air flue that is communicated with described intake manifold fluid, described conduit is limited with a plurality of holes;
Vent systems comprises being set for the gas exhaust manifold of carrying exhaust; And
Secondary air injection system, it is set for air is delivered to described vent systems from described conduit by described a plurality of holes.
2. internal-combustion engine as claimed in claim 1, wherein said a plurality of holes are spaced apart equably each other along the periphery of described conduit.
3. internal-combustion engine as claimed in claim 1 also comprises Coupler, and this Coupler is enclosing said catheter and cooperate the chamber that is communicated with described secondary air injection system fluid and is communicated with described via fluid via described a plurality of holes to limit with described conduit with one heart.
4. internal-combustion engine as claimed in claim 3, the cross section of wherein said conduit is roughly circle, and wherein said chamber is ring-type roughly.
5. internal-combustion engine as claimed in claim 4, wherein said a plurality of holes comprise at least four holes.
6. internal-combustion engine comprises:
Gas handling system with intake manifold and conduit; Described conduit has internal surface and outer surface, and described internal surface limits the air flue that is communicated with described manifold fluid; Described conduit is limited with a plurality of holes that extend to described outer surface from described path;
Vent systems comprises being set for the gas exhaust manifold of carrying exhaust; And
Secondary air injection system, it is set for air is delivered to described vent systems from described conduit; Described secondary air injection system comprises Coupler, the part of this Coupler enclosing said catheter and the chamber that is communicated with described orifice flow body with qualification with the outer surface cooperation of described conduit; Described chamber is communicated with described secondary air injection system fluid.
7. internal-combustion engine as claimed in claim 6, wherein said conduit has circular cross-section, and wherein said chamber is ring-type roughly.
8. internal-combustion engine as claimed in claim 6, wherein said a plurality of Kong Zaizhou are upwards evenly spaced apart.
9. air inlet system that is used to have the internal-combustion engine of secondary air injection system, described air inlet system comprises:
Air-strainer;
Intake manifold;
Be limited with the conduit that the path that described air-strainer is communicated with fluid between the described intake manifold is provided, described conduit is limited with along the even a plurality of holes spaced apart of the periphery of described conduit; And
Coupler, but its place of working is connected to described secondary air injection system, and cooperate to limit the chamber that is communicated with described via fluid via described a plurality of holes with described conduit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/432098 | 2006-05-11 | ||
| US11/432,098 US20070261394A1 (en) | 2006-05-11 | 2006-05-11 | Fluid extraction arrangement for engine air induction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101070772A true CN101070772A (en) | 2007-11-14 |
Family
ID=38608281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101032531A Pending CN101070772A (en) | 2006-05-11 | 2007-05-10 | Fluid extraction arrangement for engine air induction system |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20070261394A1 (en) |
| CN (1) | CN101070772A (en) |
| DE (1) | DE102007021540A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014201549A1 (en) | 2013-02-13 | 2014-08-14 | Volkswagen Aktiengesellschaft | Internal combustion engine with booster |
| US11927159B1 (en) * | 2023-01-18 | 2024-03-12 | Ford Global Technologies, Llc | Secondary air path for an air induction system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5367020A (en) * | 1976-11-26 | 1978-06-15 | Toyota Motor Corp | Secondary air supply controller for internal combustion engine |
| JPS53118618A (en) * | 1977-03-25 | 1978-10-17 | Toyota Motor Corp | Air cleaner for internal combustion engine |
| JPS55133088U (en) * | 1979-03-13 | 1980-09-20 | ||
| JPS5735136A (en) * | 1980-08-12 | 1982-02-25 | Honda Motor Co Ltd | Secondary-air supply instrument of air/fuel ratio control equipment for an internal combustion engine |
| US5279155A (en) * | 1993-02-04 | 1994-01-18 | Honeywell, Inc. | Mass airflow sensor |
| EP1550797A3 (en) * | 2002-12-07 | 2006-05-31 | Mann+Hummel Gmbh | Method and device for controlling of a secondary air flow for an internal combustion engine |
-
2006
- 2006-05-11 US US11/432,098 patent/US20070261394A1/en not_active Abandoned
-
2007
- 2007-05-08 DE DE102007021540A patent/DE102007021540A1/en not_active Withdrawn
- 2007-05-10 CN CNA2007101032531A patent/CN101070772A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102007021540A1 (en) | 2007-11-22 |
| US20070261394A1 (en) | 2007-11-15 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |