WO2012154414A2 - Compressor of an exhaust-gas turbocharger - Google Patents

Compressor of an exhaust-gas turbocharger Download PDF

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Publication number
WO2012154414A2
WO2012154414A2 PCT/US2012/035156 US2012035156W WO2012154414A2 WO 2012154414 A2 WO2012154414 A2 WO 2012154414A2 US 2012035156 W US2012035156 W US 2012035156W WO 2012154414 A2 WO2012154414 A2 WO 2012154414A2
Authority
WO
WIPO (PCT)
Prior art keywords
compressor
return flow
inflow
duct
housing
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.)
Ceased
Application number
PCT/US2012/035156
Other languages
French (fr)
Other versions
WO2012154414A3 (en
Inventor
Aleksander Sekularac
Thomas Lischer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BorgWarner Inc
Original Assignee
BorgWarner Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BorgWarner Inc filed Critical BorgWarner Inc
Priority to US14/115,497 priority Critical patent/US9528527B2/en
Priority to BR112013027662A priority patent/BR112013027662A2/en
Priority to DE112012001554.1T priority patent/DE112012001554T5/en
Priority to CN201280020324.0A priority patent/CN103518048B/en
Priority to RU2013151704/06A priority patent/RU2013151704A/en
Publication of WO2012154414A2 publication Critical patent/WO2012154414A2/en
Publication of WO2012154414A3 publication Critical patent/WO2012154414A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F04D27/0207—Surge control by bleeding, bypassing or recycling fluids
    • F04D27/0238—Details or means for fluid reinjection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/10—Centrifugal pumps for compressing or evacuating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F04D27/0207—Surge control by bleeding, bypassing or recycling fluids
    • F04D27/0215—Arrangements therefor, e.g. bleed or by-pass valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F04D27/0246—Surge control by varying geometry within the pumps, e.g. by adjusting vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
    • F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
    • F04D29/685—Inducing localised fluid recirculation in the stator-rotor interface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • F02B37/16—Control of the pumps by bypassing charging air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/40—Application in turbochargers

Definitions

  • the invention relates to a compressor of an exhaust-gas turbocharger as per the preamble of claim 1.
  • a compressor of said type is known from DE 10 2009 019 754 Al .
  • the bypass or recirculation duct provided therein commonly referred to as a so- called “characteristic-map-stabilizing measure" has the effect that the compressor characteristic map can be extended in the region of the surge limit.
  • the provision of such a recirculation duct and of the passage in the region of the wheel contour however lead to a degradation in efficiency in wide ranges of the characteristic map, even though the characteristic-map-stabilizing measures are not active here.
  • the inflow and return flow openings of the recirculation duct can be opened and closed, said duct can be activated only in those characteristic map regions in which it also active in terms of the surge limit.
  • the duct can be deactivated in the region of part load or full load of the engine, such that the efficiency of the compressor according to the invention can be improved overall.
  • EP 1 639 245 Bl discloses a compressor which likewise has an additional duct adjacent to the compressor inlet duct, said additional duct cannot serve as a recirculation duct because its inlet side is always flow-connected to an air collecting chamber even when its outlet side is closed by means of a shut-off element. Furthermore, in said blocking position, the entire inlet duct to the compressor wheel is closed by the shut-off element, whereas the inlet duct of the compressor according to the invention remains open even when the recirculation duct is closed.
  • Figure 1 shows a schematically highly simplified diagrammatic illustration of an exhaust-gas turbocharger which may be provided with a compressor according to the invention
  • Figure 2 shows a partial section through a compressor according to the invention, with the recirculation duct open
  • Figure 3 shows an illustration of the compressor corresponding to Figure 2, with the recirculation duct closed.
  • Figure 1 shows an exhaust-gas turbocharger ATL in a diagrammaticaliy highly simplified illustration, which exhaust-gas turbocharger has, as is conventional, a turbine T whose turbine wheel TR is connected via a shaft W to a compressor wheel 2 of the compressor 1 according to the invention.
  • the exhaust-gas turbocharger self- evidently also has all the other conventional components, the description of which is however not necessary for explaining the principles of the present application.
  • Figures 2 and 3 show a sectional illustration through that region of the compressor 1 which is arranged above a longitudinal axis A.
  • the compressor 1 has a compressor wheel 2 which is arranged in a compressor housing 3.
  • the compressor housing 3 has a compressor inlet 4 from which an inlet duct 5 leads to the compressor wheel 2.
  • the compressor longitudinal axis A also forms the longitudinal axis of said inlet duct 5.
  • the inlet duct 5 has a recirculation duct 6 preferably arranged parallel thereto.
  • the recirculation duct 6 has a compressor- wheel- side inflow opening 7 and an inlet-side return flow opening 8.
  • an axially movable sleeve 9 and an axially movable slide 10 are provided, wherein the respective movement of the sleeve 9 and of the slide 10 takes place in the direction of the longitudinal axis A.
  • the recirculation duct 6 is delimited by an inner wall surface 14', which rims parallel to the longitudinal axis A, of a housing region 1 ⁇ of the compressor housing 3, by a return flow surface 1 1 of the slide 10, by an inflow surface 13 of the housing region 1 ⁇ , and by a flow surface 15 of the sleeve 9.
  • the return flow surface 1 1 is of rounded design in order to improve its flow r characteristics. Accordingly, in the region of the return flow opening 8, the sleeve 9 has a likewise rounded return flow surface 12, the rounding of which corresponds to that of the return flow surface 1 1 .
  • the inflow surface 13 of the housing region I V is formed so as to be inclined relative to the longitudinal axis A, as shown in Figures 2 and 3.
  • the sleeve 9 has, in the region of the inflow opening 7, a likewise inclined inflow surface 14, the inclination of which corresponds to the inclination of the inflow surface 13. These measures, too, serve to improve the flow characteristics of the inflow opening 7.
  • said recirculation duct is closed by moving the slide 10 and the sleeve 9, as illustrated in Figure 3.
  • the slide 10 and the sleeve 9 may in each case be connected to an actuator.
  • the actuator for the sleeve 9 may for example be a spring (not illustrated) which preloads the sleeve 9 into the open position as per Figure 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Supercharger (AREA)
  • Exhaust-Gas Circulating Devices (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention relates to a compressor (1) of an exhaust-gas turbocharger (ATL), having a compressor wheel (2); and having a compressor housing (3) which has a housing longitudinal axis (A), in which the compressor wheel (2) is arranged and which has an inlet duct (5), said inlet duct running from a compressor inlet (4) to the compressor wheel (2) and having a recirculation duct (6) which has a compressor-wheel-side inflow opening (7) and a compressor-inlet-side return flow opening (8), wherein the inflow opening (7) and the return flow opening (8) can be opened and closed.

Description

COMPRESSOR OF AN EXHAUST-GAS TURBOCHARGER
DESCRIPTION The invention relates to a compressor of an exhaust-gas turbocharger as per the preamble of claim 1.
A compressor of said type is known from DE 10 2009 019 754 Al .
The bypass or recirculation duct provided therein, commonly referred to as a so- called "characteristic-map-stabilizing measure", has the effect that the compressor characteristic map can be extended in the region of the surge limit. The provision of such a recirculation duct and of the passage in the region of the wheel contour however lead to a degradation in efficiency in wide ranges of the characteristic map, even though the characteristic-map-stabilizing measures are not active here.
It is therefore an object of the present invent ion to create a compressor of the type specified in the preamble of claim 1 , which compressor makes it possible to provide a characteristic-map-stabilizing measure without efficiency disadvantages in relation to a compressor without such characteristic -map-stabilizing measures.
Said object is achieved by means of the features of claim 1.
By virtue of the fact that the inflow and return flow openings of the recirculation duct can be opened and closed, said duct can be activated only in those characteristic map regions in which it also active in terms of the surge limit. The duct can be deactivated in the region of part load or full load of the engine, such that the efficiency of the compressor according to the invention can be improved overall.
Although EP 1 639 245 Bl discloses a compressor which likewise has an additional duct adjacent to the compressor inlet duct, said additional duct cannot serve as a recirculation duct because its inlet side is always flow-connected to an air collecting chamber even when its outlet side is closed by means of a shut-off element. Furthermore, in said blocking position, the entire inlet duct to the compressor wheel is closed by the shut-off element, whereas the inlet duct of the compressor according to the invention remains open even when the recirculation duct is closed.
The subclaims relate to advantageous refinements of the invention.
Further details, advantages and features of the present invention will emerge from the following description of an exemplary embodiment on the basis of the drawing, in which:
Figure 1 shows a schematically highly simplified diagrammatic illustration of an exhaust-gas turbocharger which may be provided with a compressor according to the invention, Figure 2 shows a partial section through a compressor according to the invention, with the recirculation duct open, and
Figure 3 shows an illustration of the compressor corresponding to Figure 2, with the recirculation duct closed.
Figure 1 shows an exhaust-gas turbocharger ATL in a diagrammaticaliy highly simplified illustration, which exhaust-gas turbocharger has, as is conventional, a turbine T whose turbine wheel TR is connected via a shaft W to a compressor wheel 2 of the compressor 1 according to the invention. The exhaust-gas turbocharger self- evidently also has all the other conventional components, the description of which is however not necessary for explaining the principles of the present application.
Figures 2 and 3 show a sectional illustration through that region of the compressor 1 which is arranged above a longitudinal axis A. The compressor 1 has a compressor wheel 2 which is arranged in a compressor housing 3.
The compressor housing 3 has a compressor inlet 4 from which an inlet duct 5 leads to the compressor wheel 2. Here, the compressor longitudinal axis A also forms the longitudinal axis of said inlet duct 5.
As shown by Figures 2 and 3, the inlet duct 5 has a recirculation duct 6 preferably arranged parallel thereto. The recirculation duct 6 has a compressor- wheel- side inflow opening 7 and an inlet-side return flow opening 8.
In the particularly preferred embodiments of Figures 2 and 3 , to make it possible for the inflow opening 7 and the return flow opening 8 to be opened and closed, an axially movable sleeve 9 and an axially movable slide 10 are provided, wherein the respective movement of the sleeve 9 and of the slide 10 takes place in the direction of the longitudinal axis A.
In the embodiment illustrated in Figures 2 and 3 , the recirculation duct 6 is delimited by an inner wall surface 14', which rims parallel to the longitudinal axis A, of a housing region 1 Γ of the compressor housing 3, by a return flow surface 1 1 of the slide 10, by an inflow surface 13 of the housing region 1 Γ, and by a flow surface 15 of the sleeve 9.
As shown in Figure 1 , the return flow surface 1 1 is of rounded design in order to improve its flowr characteristics. Accordingly, in the region of the return flow opening 8, the sleeve 9 has a likewise rounded return flow surface 12, the rounding of which corresponds to that of the return flow surface 1 1 .
The inflow surface 13 of the housing region I V is formed so as to be inclined relative to the longitudinal axis A, as shown in Figures 2 and 3. The sleeve 9 has, in the region of the inflow opening 7, a likewise inclined inflow surface 14, the inclination of which corresponds to the inclination of the inflow surface 13. These measures, too, serve to improve the flow characteristics of the inflow opening 7.
Figur e 2 shows the open position of the inflow opening 7 and of the return flow opening 8, in which the recirculation duct 6 is consequently activated in order to permit a return flow of intake air flowing to the compressor wheel 2, which serves to extend the characteristic map of the compressor or exhaust-gas turbocharger by shifting the surge limit.
In other characteristic map regions in which the recirculation duct 6 is not active in any case, said recirculation duct is closed by moving the slide 10 and the sleeve 9, as illustrated in Figure 3. For this purpose, the slide 10 and if appropriate the sleeve 9 may in each case be connected to an actuator. The actuator for the sleeve 9 may for example be a spring (not illustrated) which preloads the sleeve 9 into the open position as per Figure 2.
To supplement the above written disclosure of the invention, reference is hereby explicitly made to the diagrammatic illustration thereof in Figures 1 to 3.
LIST OF REFERENCE SYMBOLS
1 Compressor
2 Compressor wheel
3 Compressor housing
4 Compressor inlet
5 Inlet duct
6 Recirculation duct
7 Inflow opening
8 Return flow opening
9 Sleeve
10 Slide
11 First return flow surface i r Housing region
12 Second return flow surface
13 First inflow surface
14 Second inflow surface
14' Inner surface
15 Flow surface
ATL Exhaust-gas turbo charger
T Turbine
TR Turbine wheel
W Shaft
A Longitudinal axis of the cc recirculation duct 6

Claims

A compressor (1 ) of an exhaust-gas turbocharger (ATL), having a compressor wheel (2); and
having a compressor housing (3)
• which has a housing longitudinal axis (A),
• in which the compressor wheel (2) is arranged and
• which has an inlet duct (5 ), said inlet duct running from a compressor inlet (4) to the compressor wheel (2) and having a recirculation duct (6) which has a compressor-wheel-side inflow opening (7) and a compressor-inlet-side return flow opening (8), wherein
the inflow opening (7) and the return flow opening (8) can be opened and closed.
2. The compressor as claimed in claim 1 , wherein the recirculation duct (6) is delimited by an axially movable sleeve (9), an axially movable slide (10) and an inner surface ( 14') of an adjacent housing region ( I V) of the compressor housing (3).
3. The compressor as claimed in claim 2, wherein the slide (10) has a rounded first return flow surface (1 1) which leads to the return flow opening (8).
4. The compressor as claimed in claim 3, wherein the sleeve (9) has a rounded second return flow surface (12).
5. The compressor as claimed in one of claims 2 to 4, wherein the housing region ( I V) has a first inflow surface ( 13) which is inclined relative to the longitudinal axis (A) and which leads to the inflow opening (7).
6. The compressor as claimed in claim 5, wherein the sleeve (9) has a second inflow surface ( 14), the inclination of which corresponds to the inchnation of the first inflow surface (13).
7. The compressor as claimed in one of claims 2 to 6, wherein the slide ( 10) can be actuated by means of an actuator.
8. The compressor as claimed in one of claims 1 to 7, wherein the sleeve (9) can be actuated by means of an actuator.
9. The compressor as claimed in one of claims 1 to 8, wherein the recirculation duct (6) runs parallel to the inflow duct (5).
10. A compressor housing (3) of a compressor (1),
• having a housing longitudinal axis (A) and
• having an inlet duct (5) which has a recirculation duct (6) which has an inflow opening (7) and a return flow opening (8), wherein
• the inflow opening (7) and the return flow opening (8) can be opened and closed.
1 1. The compressor housing as claimed in claim 10, characterized by one of claims 2 to 9.
PCT/US2012/035156 2011-05-10 2012-04-26 Compressor of an exhaust-gas turbocharger Ceased WO2012154414A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US14/115,497 US9528527B2 (en) 2011-05-10 2012-04-26 Compressor of an exhaust-gas turbocharger
BR112013027662A BR112013027662A2 (en) 2011-05-10 2012-04-26 compressor of an exhaust gas turbocharger
DE112012001554.1T DE112012001554T5 (en) 2011-05-10 2012-04-26 Compressor of an exhaust gas turbocharger
CN201280020324.0A CN103518048B (en) 2011-05-10 2012-04-26 Compressor for exhaust turbocharger
RU2013151704/06A RU2013151704A (en) 2011-05-10 2012-04-26 COMPRESSOR TURBOCHARGER DRIVED BY EXHAUST GASES

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011101036 2011-05-10
DE102011101036.3 2011-05-10

Publications (2)

Publication Number Publication Date
WO2012154414A2 true WO2012154414A2 (en) 2012-11-15
WO2012154414A3 WO2012154414A3 (en) 2013-01-03

Family

ID=47139875

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2012/035156 Ceased WO2012154414A2 (en) 2011-05-10 2012-04-26 Compressor of an exhaust-gas turbocharger

Country Status (6)

Country Link
US (1) US9528527B2 (en)
CN (1) CN103518048B (en)
BR (1) BR112013027662A2 (en)
DE (1) DE112012001554T5 (en)
RU (1) RU2013151704A (en)
WO (1) WO2012154414A2 (en)

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US20170292441A1 (en) * 2016-04-11 2017-10-12 Hyundai Motor Company Device for variably controlling flow rate of intake air of turbocharger compressor
RU2725302C1 (en) * 2018-12-17 2020-06-30 Ман Энерджи Солюшнз Се Exhaust gas turbosupercharger with auxetic structures

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EP3273068A4 (en) * 2015-03-20 2018-11-07 Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. Centrifugal compressor and supercharger comprising same
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US9951793B2 (en) * 2016-06-01 2018-04-24 Borgwarner Inc. Ported shroud geometry to reduce blade-pass noise
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WO2019220837A1 (en) * 2018-05-14 2019-11-21 株式会社Ihi Centrifugal compressor
JP7228402B2 (en) * 2019-02-18 2023-02-24 株式会社オティックス Compressor housing for turbocharger and manufacturing method thereof
JP7298703B2 (en) * 2019-10-09 2023-06-27 株式会社Ihi centrifugal compressor
US11111843B2 (en) 2020-01-21 2021-09-07 GM Global Technology Operations LLC Adjustable trim system for a turbocharger compressor including a ported shroud
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Publication number Priority date Publication date Assignee Title
US20170292441A1 (en) * 2016-04-11 2017-10-12 Hyundai Motor Company Device for variably controlling flow rate of intake air of turbocharger compressor
RU2725302C1 (en) * 2018-12-17 2020-06-30 Ман Энерджи Солюшнз Се Exhaust gas turbosupercharger with auxetic structures

Also Published As

Publication number Publication date
RU2013151704A (en) 2015-06-20
WO2012154414A3 (en) 2013-01-03
CN103518048A (en) 2014-01-15
US20140093354A1 (en) 2014-04-03
US9528527B2 (en) 2016-12-27
BR112013027662A2 (en) 2016-12-27
CN103518048B (en) 2016-08-31
DE112012001554T5 (en) 2014-01-30

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