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WO2020058357A1 - Turbocharger with shaft energy extraction - Google Patents

Turbocharger with shaft energy extraction Download PDF

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Publication number
WO2020058357A1
WO2020058357A1 PCT/EP2019/075060 EP2019075060W WO2020058357A1 WO 2020058357 A1 WO2020058357 A1 WO 2020058357A1 EP 2019075060 W EP2019075060 W EP 2019075060W WO 2020058357 A1 WO2020058357 A1 WO 2020058357A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
impeller
housing
compressor
supercharger
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/EP2019/075060
Other languages
French (fr)
Inventor
Veerangowda Shivalingreddy PATIL
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.)
Eaton Intelligent Power Ltd
Original Assignee
Eaton Intelligent Power Ltd
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 Eaton Intelligent Power Ltd filed Critical Eaton Intelligent Power Ltd
Publication of WO2020058357A1 publication Critical patent/WO2020058357A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • F02B33/00—Engines characterised by provision of pumps for charging or scavenging
    • F02B33/02—Engines with reciprocating-piston pumps; Engines with crankcase pumps
    • F02B33/06—Engines with reciprocating-piston pumps; Engines with crankcase pumps with reciprocating-piston pumps other than simple crankcase pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B13/00—Reciprocating-piston machines or engines with rotating cylinders in order to obtain the reciprocating-piston motion
    • F01B13/04—Reciprocating-piston machines or engines with rotating cylinders in order to obtain the reciprocating-piston motion with more than one cylinder
    • F01B13/06—Reciprocating-piston machines or engines with rotating cylinders in order to obtain the reciprocating-piston motion with more than one cylinder in star arrangement
    • F01B13/068—Reciprocating-piston machines or engines with rotating cylinders in order to obtain the reciprocating-piston motion with more than one cylinder in star arrangement the connection of the pistons with an actuated or actuating element being at the inner ends of the cylinders
    • 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
    • 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

Definitions

  • the invention relates to combination supercharger and compressors that may extract energy from an engine.
  • the superchargers include a compressor that is rotatably driven by the engine.
  • the inlet to the compressor is open to the air intake for the engine while the output from the compressor is open to the combustion chambers of the engine.
  • a combination supercharger and compressor for an internal combustion including a housing including an exhaust gas passageway.
  • An impeller is rotatably mounted within the housing and moveable by exhaust gas.
  • An air passageway is formed axially through the impeller.
  • the air passageway has an air inlet at one axial end of the air passageway and a compressed air outlet at the other end of the air passageway.
  • a combination supercharger and compressor for an internal combustion including a housing including an exhaust gas passageway formed circumferentially in the housing.
  • An impeller is rotatably mounted within the housing and moveable by exhaust gas.
  • An air passageway is formed axially through the impeller.
  • the air passageway has an air inlet at one axial end of the air passageway and a compressed air outlet at the other end of the air passageway.
  • the housing seals the exhaust gas passageway from the air passageway.
  • a combination supercharger and compressor for an internal combustion including a housing including an exhaust gas passageway.
  • An impeller is rotatably mounted within the housing and moveable by exhaust gas.
  • An air passageway is formed axially through the impeller.
  • the air passageway has an air inlet at one axial end of the air passageway and a compressed air outlet at the other end of the air passageway.
  • the impeller includes a plurality of circumferentially spaced air chambers formed within the impeller. The plurality of circumferentially spaced air chambers are eccentrically formed relative to an axis of rotation of the impeller and linked to the air inlet compressing air.
  • FIG. 1 is an elevation view illustrating a supercharger/compressor
  • FIG. 2 is a view similar to FIG. 1, but with the outer cover for the compressor removed;
  • FIG. 3 is an end view of the compressor and with parts removed for clarity;
  • FIG. 4 is a sectional view of the supercharger/compressor.
  • the supercharger/compressor 10 includes a housing 12 having first and second spaced end plates 14 and 16 and connected by a cover 18.
  • the first and second spaced end plates 14 and 16 seal to the cover to isolate air from exhaust gases as will discussed in more detail below.
  • the housing 12 may be mounted directly to the exhaust gas manifold of an internal combustion engine.
  • an impeller 20 having a plurality of circumferentially spaced fins 22 is rotatably mounted between the first and second spaced end plates.
  • a coupling 24 is attached to one end of the impeller 22 so that the impeller 22 and coupling 24 rotate in unison with each other.
  • This coupling 24 may be used to connect with a power generating device, such as an electric generator.
  • the supercharger/compressor 10 may also extract energy from the engine and the energy may be stored in a battery and utilized for various applications in a vehicle.
  • the cover 18 is positioned around the impeller 20 and the outer periphery of the fins 22 is positioned closely adjacent an inner compressor surface 26 on the cover 18.
  • a housing inlet 28 formed in the cover 28 is open to the impeller 20 and a housing outlet 30 is also open to the impeller 20, defining an exhaust gas passage 62 that flows exhaust gas circumferentially in the housing 12 around the impeller 22.
  • exhaust gas from the engine enters the housing inlet 28 and contacts the impeller fins 22. This, in turn, rotatably drives the impeller 20 in a clockwise direction as viewed in FIG. 4.
  • the hot exhaust gases exiting from the housing outlet 30 may be used for any purpose, such as exhaust gas recirculation (EGR) or otherwise routed through an exhaust system.
  • EGR exhaust gas recirculation
  • the second air flow path 60 includes an air inlet 42 formed in the housing end plate 12 and includes first and second passageways 44 and 46 formed in the end plate 12. These passageways 44 and 46 are open to or linked to one or more of a plurality of circumferentially spaced air chambers 50, 52, 54, 56 and 58 that are formed within the impeller 20.
  • these air chambers 50-58 are eccentrically formed relative to the axis of rotation of the impeller 20. Consequently, as the impeller 20 is rotatably driven by the exhaust gas flow from the housing inlet 28 to the housing outlet 30, air is inducted through the passages 44 and 46 into the chambers 50-58 in the impeller. The rotation of the impeller 20 continues to compress the air until the compressed air is exhausted out through the compressor outlet ports 60 best seen in FIG. 3 at the end 14 of the housing 12.
  • the air flow path 60 for the compressor 10 is not only axial through the housing 12, but is also completely isolated from the exhaust gas path 62 through the housing 12. In this manner, the previously known buildup of soot within the compressed air passageway 60 is completely avoided.
  • the supercharger/compressor 10 provides a dual flow pump with two pumping passageways that are completely isolated from each other.
  • One passageway 62 provides exhaust gas for the EGR while the second passageway 60 is a compressed air passageway which may be used for any desirable purpose, such as for the engine inlet.
  • the supercharger/compressor 10 may be used as an EGR pump to mix a portion of the exhaust gas with inlet air to reduce NOx.
  • the compressor 10 can be used to increase air flow into an engine intake to increase engine power.
  • an electric generator may also be driven by the supercharger/compressor 10 through the coupling 24 such that the supercharger/ compressor 10 extracts energy from the engine for use in vehicle applications.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Supercharger (AREA)

Abstract

A combination supercharger and compressor for an internal combustion includes a housing including an exhaust gas passageway. An impeller is rotatably mounted within the housing and moveable by exhaust gas. An air passageway is formed axially through the impeller. The air passageway has an air inlet at one axial end of the air passageway and a compressed air outlet at the other end of the air passageway.

Description

TURBOCHARGER WITH SHAFT ENERGY EXTRACTION
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims priority to Indian provisional application number 201811035411 filed on September 19, 2018 which is incorporated herein by reference in its entirety.
FIELD OF THE INVENTION
[0002] The invention relates to combination supercharger and compressors that may extract energy from an engine.
BACKGROUND OF THE INVENTION
[0003] In order to increase the power from an internal combustion engine, many internal combustion engines utilize superchargers to increase the air and fuel to the engine. In brief, the superchargers include a compressor that is rotatably driven by the engine. The inlet to the compressor is open to the air intake for the engine while the output from the compressor is open to the combustion chambers of the engine. By increasing both the air and fuel flow to the engine, the power output from the engine is likewise increased.
[0004] One disadvantage of these previously known superchargers is that such superchargers are driven from the engine itself. This, however, consumes significant amounts of engine power which impacts the overall engine efficiency. In addition, the previously known superchargers suffer from soot formation when the superchargers are exposed to direct exhaust gas. This, in turn, can make the different superchargers ran difficult and even seize over a period of time.
[0005] Consequently, a need exists for a device which can work in a very hot and diluted exhaust gas environment while avoiding soot buildup and minimizing, or eliminating, the engine power necessary to drive the device.
SUMMARY OF THE INVENTION
[0006] In one aspect, there is disclosed a combination supercharger and compressor for an internal combustion including a housing including an exhaust gas passageway. An impeller is rotatably mounted within the housing and moveable by exhaust gas. An air passageway is formed axially through the impeller. The air passageway has an air inlet at one axial end of the air passageway and a compressed air outlet at the other end of the air passageway.
[0007] In another aspect, there is disclosed a combination supercharger and compressor for an internal combustion including a housing including an exhaust gas passageway formed circumferentially in the housing. An impeller is rotatably mounted within the housing and moveable by exhaust gas. An air passageway is formed axially through the impeller. The air passageway has an air inlet at one axial end of the air passageway and a compressed air outlet at the other end of the air passageway. The housing seals the exhaust gas passageway from the air passageway.
[0008] In a further aspect, there is disclosed a combination supercharger and compressor for an internal combustion including a housing including an exhaust gas passageway. An impeller is rotatably mounted within the housing and moveable by exhaust gas. An air passageway is formed axially through the impeller. The air passageway has an air inlet at one axial end of the air passageway and a compressed air outlet at the other end of the air passageway. The impeller includes a plurality of circumferentially spaced air chambers formed within the impeller. The plurality of circumferentially spaced air chambers are eccentrically formed relative to an axis of rotation of the impeller and linked to the air inlet compressing air.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] FIG. 1 is an elevation view illustrating a supercharger/compressor;
[0010] FIG. 2 is a view similar to FIG. 1, but with the outer cover for the compressor removed;
[0011] FIG. 3 is an end view of the compressor and with parts removed for clarity; and
[0012] FIG. 4 is a sectional view of the supercharger/compressor.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0013] With reference to FIGS. 1-4, there is shown a dual flow pump or supercharger/compressor 10. The supercharger/compressor 10 includes a housing 12 having first and second spaced end plates 14 and 16 and connected by a cover 18. The first and second spaced end plates 14 and 16 seal to the cover to isolate air from exhaust gases as will discussed in more detail below. In one aspect, the housing 12 may be mounted directly to the exhaust gas manifold of an internal combustion engine.
[0014] As best shown in FIG. 2, an impeller 20 having a plurality of circumferentially spaced fins 22 is rotatably mounted between the first and second spaced end plates. A coupling 24 is attached to one end of the impeller 22 so that the impeller 22 and coupling 24 rotate in unison with each other. This coupling 24 may be used to connect with a power generating device, such as an electric generator. In this manner, the supercharger/compressor 10 may also extract energy from the engine and the energy may be stored in a battery and utilized for various applications in a vehicle.
[0015] As best shown in FIGS. 1 and 4, the cover 18 is positioned around the impeller 20 and the outer periphery of the fins 22 is positioned closely adjacent an inner compressor surface 26 on the cover 18. A housing inlet 28 formed in the cover 28 is open to the impeller 20 and a housing outlet 30 is also open to the impeller 20, defining an exhaust gas passage 62 that flows exhaust gas circumferentially in the housing 12 around the impeller 22.
[0016] During operation of the engine, exhaust gas from the engine enters the housing inlet 28 and contacts the impeller fins 22. This, in turn, rotatably drives the impeller 20 in a clockwise direction as viewed in FIG. 4. The hot exhaust gases exiting from the housing outlet 30 may be used for any purpose, such as exhaust gas recirculation (EGR) or otherwise routed through an exhaust system.
[0017] In addition to the exhaust gas flow path 62 from the housing inlet 28 and the housing outlet 30, a second flow path 60 for providing compressed air is best shown in FIGS. 2-4. The second air flow path 60 includes an air inlet 42 formed in the housing end plate 12 and includes first and second passageways 44 and 46 formed in the end plate 12. These passageways 44 and 46 are open to or linked to one or more of a plurality of circumferentially spaced air chambers 50, 52, 54, 56 and 58 that are formed within the impeller 20.
[0018] As best shown in FIG, 4, these air chambers 50-58 are eccentrically formed relative to the axis of rotation of the impeller 20. Consequently, as the impeller 20 is rotatably driven by the exhaust gas flow from the housing inlet 28 to the housing outlet 30, air is inducted through the passages 44 and 46 into the chambers 50-58 in the impeller. The rotation of the impeller 20 continues to compress the air until the compressed air is exhausted out through the compressor outlet ports 60 best seen in FIG. 3 at the end 14 of the housing 12.
[0019] It can be seen that the air flow path 60 for the compressor 10 is not only axial through the housing 12, but is also completely isolated from the exhaust gas path 62 through the housing 12. In this manner, the previously known buildup of soot within the compressed air passageway 60 is completely avoided.
[0020] The supercharger/compressor 10, provides a dual flow pump with two pumping passageways that are completely isolated from each other. One passageway 62 provides exhaust gas for the EGR while the second passageway 60 is a compressed air passageway which may be used for any desirable purpose, such as for the engine inlet. The supercharger/compressor 10 may be used as an EGR pump to mix a portion of the exhaust gas with inlet air to reduce NOx. In addition, the compressor 10 can be used to increase air flow into an engine intake to increase engine power. Further, as specified above, an electric generator may also be driven by the supercharger/compressor 10 through the coupling 24 such that the supercharger/ compressor 10 extracts energy from the engine for use in vehicle applications.

Claims

1. A combination supercharger and compressor for an internal combustion engine comprising:
a housing including an exhaust gas passageway;
an impeller rotatably mounted within the housing and moveable by exhaust gas;
an air passageway formed axially through said impeller, said air passageway having an air inlet at one axial end of said air passageway and a compressed air outlet at the other end of said air passageway.
2. The combination supercharger and compressor of claim 1 wherein the housing includes a first end plate separated from a second end plate and connected by a cover.
3. The combination supercharger and compressor of claim 2 wherein the impeller includes a plurality of circumferentially spaced fins formed thereon.
4. The combination supercharger and compressor of claim 3 wherein the cover is positioned around the impeller and an outer periphery of the fins is positioned closely adjacent an inner compressor surface on the cover.
5. The combination supercharger and compressor of claim 1 wherein the air inlet is formed in the first housing end plate, the air inlet including first and second passageways formed in the first housing end plate.
6. The combination supercharger and compressor of claim 1 wherein the air outlet is formed in the second housing end plate, the air outlet including first and second passageways formed in the second housing end plate.
7. The combination supercharger and compressor of claim 1 including a plurality of circumferentially spaced air chambers formed within the impeller, the plurality of circumferentially spaced air chambers linked to the air inlet.
8. The combination supercharger and compressor of claim 6 wherein the plurality of circumferentially spaced air chambers are eccentrically formed relative to an axis of rotation of the impeller compressing air.
9. The combination supercharger and compressor of claim 1 wherein the exhaust gas passageway includes a housing inlet open to the impeller and a housing outlet open to the impeller and exhaust gas rotatably driving the impeller.
10. The combination supercharger and compressor of claim 1 including a coupling attached to the impeller for connecting to an electric generator.
11. The combination supercharger and compressor of claim 1 wherein the housing seals the exhaust gas passage from the air passageway.
12. A combination supercharger and compressor for an internal combustion engine comprising:
a housing including an exhaust gas passageway formed circumferentially in the housing; an impeller rotatably mounted within the housing and moveable by exhaust gas;
an air passageway formed axially through said impeller and said housing, said air passageway having an air inlet at one axial end of said air passageway and a compressed air outlet at the other end of said air passageway;
wherein the housing seals the exhaust gas passageway from the air passageway.
13. The combination supercharger and compressor of claim 12 wherein the air inlet is formed in the first housing end plate, the air inlet including first and second passageways formed in the first housing end plate.
14. The combination supercharger and compressor of claim 12 wherein the air outlet is formed in the second housing end plate, the air outlet including first and second passageways formed in the second housing end plate.
15. The combination supercharger and compressor of claim 12 including a plurality of circumferentially spaced air chambers formed within the impeller, the plurality of circumferential ly spaced air chambers linked to the air inlet.
16. The combination supercharger and compressor of claim 15 wherein the plurality of circumferentially spaced air chambers are eccentrically formed relative to an axis of rotation of the impeller compressing air.
17. A combination supercharger and compressor for an internal combustion engine comprising:
a housing including an exhaust gas passageway;
an impeller rotatably mounted within the housing and moveable by exhaust gas;
an air passageway formed axially through said impeller, said air passageway having an air inlet at one axial end of said air passageway and a compressed air outlet at the other end of said air passageway;
wherein the impeller includes a plurality of circumferentially spaced air chambers formed within the impeller, the plurality of circumferentially spaced air chambers are eccentrically formed relative to an axis of rotation of the impeller and linked to the air inlet compressing air.
PCT/EP2019/075060 2018-09-19 2019-09-18 Turbocharger with shaft energy extraction Ceased WO2020058357A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201811035411 2018-09-19
IN201811035411 2018-09-19

Publications (1)

Publication Number Publication Date
WO2020058357A1 true WO2020058357A1 (en) 2020-03-26

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ID=68051773

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/075060 Ceased WO2020058357A1 (en) 2018-09-19 2019-09-18 Turbocharger with shaft energy extraction

Country Status (1)

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WO (1) WO2020058357A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2045330A (en) * 1933-02-01 1936-06-23 Hydraulic Press Corp Inc Radial plunger pump
US4250711A (en) * 1975-08-29 1981-02-17 Bbc Brown, Boveri & Company, Limited Method and apparatus for supercharging an internal combustion engine
US20140352299A1 (en) * 2013-05-31 2014-12-04 GM Global Technology Operations LLC Turbocharger assembly

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2045330A (en) * 1933-02-01 1936-06-23 Hydraulic Press Corp Inc Radial plunger pump
US4250711A (en) * 1975-08-29 1981-02-17 Bbc Brown, Boveri & Company, Limited Method and apparatus for supercharging an internal combustion engine
US20140352299A1 (en) * 2013-05-31 2014-12-04 GM Global Technology Operations LLC Turbocharger assembly

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