WO1998002652B1 - Motor-assisted supercharging devices for internal combustion engines - Google Patents
Motor-assisted supercharging devices for internal combustion enginesInfo
- Publication number
- WO1998002652B1 WO1998002652B1 PCT/US1997/012477 US9712477W WO9802652B1 WO 1998002652 B1 WO1998002652 B1 WO 1998002652B1 US 9712477 W US9712477 W US 9712477W WO 9802652 B1 WO9802652 B1 WO 9802652B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- compressor wheel
- permanent magnets
- compressor
- wheel
- magnets
- Prior art date
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract 9
- 238000004804 winding Methods 0.000 claims abstract 12
- 239000003570 air Substances 0.000 claims 6
- 230000006835 compression Effects 0.000 claims 2
- 238000007906 compression Methods 0.000 claims 2
- 230000005355 Hall effect Effects 0.000 claims 1
- 239000012080 ambient air Substances 0.000 claims 1
- 239000011810 insulating material Substances 0.000 claims 1
- 238000009413 insulation Methods 0.000 claims 1
- 230000014759 maintenance of location Effects 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 230000013707 sensory perception of sound Effects 0.000 claims 1
- 230000002708 enhancing effect Effects 0.000 abstract 1
Abstract
An improved machine includes a combination of elements of a rotary electric machine and an air compressor, such as in a turbocharger, and provides an improved turbocharging device for enhancing turbocharged internal combustion engine performance. The improved turbocharger (10) includes a plurality of magnets (36, 82) which are mounted in a generally circumferential arrangement about the back face of the compressor wheel (18). A stator winding (42) is mounted in opposing relation to the motor magnets. Torque can be applied to the magnets and hence to the compressor wheel when the stator is energized by an appropriate energizing circuit, thereby improving engine performance especially at low engine speeds.
Claims
[received by the International Bureau on 29 December 1997 (29.12.97); original claims 24 and 25 cancelled; original claims 2-4,, 8, 14-16, 20 and 23 amended; remaining claims unchanged (4 pages)J
1. A turbocharging device for use with an internal combustion engine, comprising: a turbocharger housing; a rotatable shaft supported by said housing carrying a combustion air compressor wheel and an exhaust gas turbine wheel; an exhaust gas intake adjacent said exhaust gas turbine wheel to direct exhaust gas flow to said turbine wheel; a combustion air intake adjacent to said combustion air compressor wheel to direct ambient air to said compressor wheel; and a brushless assisting electric motor incorporating as its rotor, said compressor wheel.
2. The turbocharging device of claim 1 , wherein said brushless assisting electric motor comprises a plurality of permanent magnets affixed to the back of the compressor wheel for rotation with the compressor wheel, and a plurality of windings adjacent to the magnets on the compressor wheel.
3. The turbocharging device of claim 2, further comprising a source of electrical energy wherein said plurality of windings is energized by said source of electrical energy to assist in driving the combustion air compressor wheel.
4. The turbocharging device of claim 2, wherein said plurality of windings is carried by the housing radially outwardly in the planes of rotation of the permanent magnets.
5. The turbocharging device of claim 2, wherein said plurality of windings is supported by the housing in opposing, axially offset relationship with the permanent magnets
-20-
6. The turbocharging device of claim 2, wherein the compressor wheel includes a front face for supporting a plurality of compression vanes, and a rear face having a shoulder extending circumferentially at an intermediate radial extent therefrom for supporting said permanent magnets.
7. The turbocharging device of claim 6, wherein said permanent magnets are secured to said compressor wheel shoulder by a retention sleeve.
8. The turbocharging device of claim 2 wherein said permanent magnets are provided with thermal insulation against heat flow from the compressor wheel.
9 The turbocharging device of claim 2 , wheiein the compiessor wheel includes a front face for supporting a plurality of compression vanes, and a rear face having a plurality of pockets foi supporting said permanent magnets.
10 The turbocharging device of claim 2, fui thet including at least one Hall effect sensor affixed to a selected winding , and control means responsive to said sensor for detecting the rotational position and speed of the permanent magnets, and for indicating to said control means when each one of said windings is to be energized
1 1 A compressor device for use with an internal combustion engine, comprising: a compressor housing, a rotatable shaft supported by said housing carrying a combustion air compressor wheel;
wheel and a plurality of adjacent stator windings to provide an incoφorated electric rotary machine.
14. The improvement of claim 13 , wherein said permanent magnets are attached near the center of the compressor wheel and insulated against heat flow from the compressor wheel.
15. The improvement of claim 13 wherein the stator windings may be energized to provide a rotating magnetic field coupled to said permanent magnets to rotate said compressor wheel.
16. The improvement of claim 13 wherein said stator windings may be connected to provide torque to assist rotation of the compressor wheel and alternately to generate an electric current output to brake said compressor wheel and limit its rotational speed.
17. The improvement of claim 1 wherein said compressor wheel forms an annular ledge attachment of said permanent magnets.
18. The improvement of claim 17 wherein said permanent magnets are located circumferentially around said compressor wheel on said annular ledge, and said stator windings are located radially outwardly of said permanent magnets and in a plane in which the permanent magnets rotate.
19. The improvement of claim 17 wherein said permanent magnets are located circumferentially around said compressor wheel on said annular ledge and extend outwardly to adjacent the periphery of the compressor wheel, and said stator windings are located adjacent said
-22-
permanent magnets but axially out of the plane of rotation of said permanent magnets.
20. The turbocharging device of claim 2, wherein said plurality of magnets are positioned on the back of the compressor wheel in a circumferential manner to rotate in planes of rotation axially offset from the forward portion of said compressor wheel .
21 . The compressor device of claim 1 1 , wherein said plurality of magnets are positioned in a plane of rotation axially offset from said compressor wheel.
22 The method of claim 12, comprising the additional steps of providing a bearing system for supporting the compressor wheel for rotation in a turbocharger housing, and positioning the permanent magnets in a plane of rotation axially offset from said hearings in a cooler section of said turbocharger housing.
23. A compressor wheel of a compressoi apparatus, comprising a hub bearing a front face forming a plurality of compressor vanes adapted, in combination with a surrounding casing, to provide a flow of compressed air upon rotation of the hub and a back face of the compressor hub formed to provide a circumferential mounting arrangement, a plurality of permanent magnets attached to the hub at the circumferential mounting arrangement of its back face, and a thermal insulating material located between each of the plurality of magnets and the compressor hub
-23-
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BR9710333A BR9710333A (en) | 1996-07-16 | 1997-07-14 | Engine-assisted supercompression devices for internal combustion engines |
| JP10506291A JP2000514897A (en) | 1996-07-16 | 1997-07-14 | Motor assisted supercharger for internal combustion engines |
| DE69727230T DE69727230T2 (en) | 1996-07-16 | 1997-07-14 | ENGINE SUPPORTED CHARGER FOR COMBUSTION ENGINES |
| EP97936963A EP0912821B1 (en) | 1996-07-16 | 1997-07-14 | Motor-assisted supercharging devices for internal combustion engines |
| AU39594/97A AU3959497A (en) | 1996-07-16 | 1997-07-14 | Motor-assisted supercharging devices for internal combustion engines |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/680,671 | 1996-07-16 | ||
| US08/680,671 US5870894A (en) | 1996-07-16 | 1996-07-16 | Motor-assisted supercharging devices for internal combustion engines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1998002652A1 WO1998002652A1 (en) | 1998-01-22 |
| WO1998002652B1 true WO1998002652B1 (en) | 1998-03-05 |
Family
ID=24732031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1997/012477 WO1998002652A1 (en) | 1996-07-16 | 1997-07-14 | Motor-assisted supercharging devices for internal combustion engines |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US5870894A (en) |
| EP (1) | EP0912821B1 (en) |
| JP (1) | JP2000514897A (en) |
| KR (1) | KR19990046150A (en) |
| CN (1) | CN1229455A (en) |
| AU (1) | AU3959497A (en) |
| BR (1) | BR9710333A (en) |
| DE (1) | DE69727230T2 (en) |
| WO (1) | WO1998002652A1 (en) |
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-
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- 1996-07-16 US US08/680,671 patent/US5870894A/en not_active Expired - Fee Related
-
1997
- 1997-07-14 DE DE69727230T patent/DE69727230T2/en not_active Expired - Fee Related
- 1997-07-14 JP JP10506291A patent/JP2000514897A/en active Pending
- 1997-07-14 WO PCT/US1997/012477 patent/WO1998002652A1/en not_active Application Discontinuation
- 1997-07-14 AU AU39594/97A patent/AU3959497A/en not_active Abandoned
- 1997-07-14 BR BR9710333A patent/BR9710333A/en not_active IP Right Cessation
- 1997-07-14 CN CN97197675A patent/CN1229455A/en active Pending
- 1997-07-14 EP EP97936963A patent/EP0912821B1/en not_active Expired - Lifetime
-
1999
- 1999-01-15 KR KR1019997000296A patent/KR19990046150A/en not_active Ceased
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