CA2764391A1 - Engine clutch and method of using same - Google Patents

Engine clutch and method of using same Download PDF

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Publication number
CA2764391A1
CA2764391A1 CA2764391A CA2764391A CA2764391A1 CA 2764391 A1 CA2764391 A1 CA 2764391A1 CA 2764391 A CA2764391 A CA 2764391A CA 2764391 A CA2764391 A CA 2764391A CA 2764391 A1 CA2764391 A1 CA 2764391A1
Authority
CA
Canada
Prior art keywords
clutch
fluid
drive shaft
central channel
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.)
Granted
Application number
CA2764391A
Other languages
French (fr)
Other versions
CA2764391C (en
Inventor
Adrian Marica
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.)
National Oilwell Varco LP
Original Assignee
National Oilwell Varco LP
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 National Oilwell Varco LP filed Critical National Oilwell Varco LP
Publication of CA2764391A1 publication Critical patent/CA2764391A1/en
Application granted granted Critical
Publication of CA2764391C publication Critical patent/CA2764391C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D31/00Fluid couplings or clutches with pumping sets of the volumetric type, i.e. in the case of liquid passing a predetermined volume per revolution
    • F16D31/02Fluid couplings or clutches with pumping sets of the volumetric type, i.e. in the case of liquid passing a predetermined volume per revolution using pumps with pistons or plungers working in cylinders
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D31/00Fluid couplings or clutches with pumping sets of the volumetric type, i.e. in the case of liquid passing a predetermined volume per revolution
    • F16D31/08Control of slip

Abstract

The invention relates to engine clutches (100). The clutch includes a drive shaft (216) rotated by the engine, an eccentric shaft selectively rotated by the drive shaft (216), a clutch fluid, a plural-ity of pistons, and a fluid regulator. The eccentric shaft (218) is posi-tionable in an opening of the drive shaft (216) for rotation thereby. The eccentric shaft (218) has cylinders extending radially therethrough and a central channel (282) extending longitudinally therethrough. The clutch fluid (221) flows between the cylinders and channel. Each piston (266) is slidably positionable in a cylinder in response to flow of clutch fluid. The pistons (266) have an outer end in constant contact with the drive shaft (216) via a bearing (262). The fluid regulator (267) is posi-tionable in the central channel (282) for selectively restricting flow of clutch fluid (221) whereby rotational speed of the eccentric shaft (218) is adjusted. The eccentric shaft (218) is connectable to a device, such as a fan (278, 164a), for rotation therewith.

Claims (40)

1. A clutch for an engine, comprising:

a drive shaft operatively connectable to the engine for rotation thereby, the drive shaft having an opening extending therethrough;

an eccentric shaft positionable in the opening of the drive shaft and rotatable thereby, the eccentric shaft having a plurality of cylinders extending radially therethrough and a central channel extending longitudinally therethrough, the plurality of cylinders and the central channel having fluid communication therebetween, the eccentric shaft connectable to a device for rotation therewith;

a clutch fluid selectively flowing between the plurality of cylinders and the central channel;

a plurality of pistons, each of the plurality of pistons positionable in one of the plurality of cylinders and slidably movable therein in response to the flow of the clutch fluid, the plurality of pistons having an outer end in constant contact with the drive shaft via a bearing; and a fluid regulator positionable in the central channel, the fluid regulator selectively restricting flow of at least a portion of the clutch fluid flowing between the plurality of cylinders and the central channel to selectively permit reciprocation of the plurality of pistons whereby a rotational speed of the eccentric shaft is adjusted.
2. The clutch of Claim 1, wherein the clutch fluid comprises a carrier fluid with a plurality of magnetic particles therein and wherein the fluid regulator comprises a pair of opposing magnets positionable in the central channel with the clutch fluid flowing therebetween, the opposing magnets generating a magnetic field therebetween for aligning at least a portion of the plurality of magnetic particles in the central channel.
3. The clutch of Claim 1, wherein the clutch fluid comprises a motor fluid and wherein the fluid regulator comprises a pair of blocks positionable in the central channel with the clutch fluid flowing therebetween, at least a portion of at least one of the pair of blocks being slidably movable in the central channel via a motor.
4. The clutch of Claim 1, wherein the drive shaft is directly connectable to the engine.
5. The clutch of Claim 1, wherein the drive shaft is indirectly connectable to the engine.
6. The clutch of Claim 1, wherein the drive shaft is operatively connectable to the engine and driven thereby via a power transmission mechanism.
7. The clutch of Claim 1, wherein the drive shaft is operatively connectable to the engine and driven thereby via a motor.
8. The clutch of Claim 1, further comprising a reservoir operatively connectable to the clutch for providing the clutch fluid thereto.
9. The clutch of Claim 8, further comprising a valve for selectively releasing the clutch fluid from the reservoir.
10. The clutch of Claim 1, further comprising a controller for operating the fluid regulator.
11. The clutch of Claim 1, further comprising at least one sensor for measuring parameters of at least one of the clutch, the engine, the device and combinations thereof.
12. The clutch of Claim 1, further comprising a mounting bracket for rotationally mounting the drive shaft to a fixed surface.
13. The clutch of Claim 12, further comprising at least one bearing between the mounting bracket and the drive shaft.
14. The clutch of Claim 1, further comprising at least one bearing between the drive shaft and the eccentric shaft.
15. The clutch of Claim 1, wherein the plurality of cylinders are at 120 degree intervals about the eccentric shaft.
16. The clutch of Claim 1, wherein the device is one of a fan, a connector, a coupler, a gear, a pulley and combinations thereof.
17. A clutch system for an engine, comprising:
a clutch comprising:

a drive shaft operatively connectable to the engine for rotation thereby, the drive shaft having an opening extending therethrough;

an eccentric shaft positionable in the opening of the drive shaft and rotatable thereby, the eccentric shaft having a plurality of cylinders extending radially therethrough and a central channel extending longitudinally therethrough, the plurality of cylinders and the central channel having fluid communication therebetween;

a clutch fluid for selectively flowing between the plurality of cylinders and the central channel;

a plurality of pistons, each of the plurality of pistons positionable in one of the plurality of cylinders and slidably movable therein in response to the flow of the clutch fluid, the plurality of pistons having an outer end in constant contact with the drive shaft via a bearing; and a fluid regulator positionable in the central channel, the fluid regulator selectively restricting flow of at least a portion of the clutch fluid flowing between the plurality of cylinders and the central channel to selectively permit reciprocation of the plurality of pistons whereby the rotational speed of the eccentric shaft is adjusted; and a device operatively connectable to the clutch for rotation therewith.
18. The system of Claim 17, wherein the clutch fluid comprises a carrier fluid with a plurality of magnetic particles therein and wherein the fluid regulator comprises a pair of opposing magnets positionable in the central channel with the clutch fluid flowing therebetween, the opposing magnets generating a magnetic field therebetween for aligning at least a portion of the plurality of magnetic particles.
19. The system of Claim 17, wherein the clutch fluid comprises a motor fluid and wherein the fluid regulator comprises a pair of blocks positionable in the central channel with the clutch fluid flowing therebetween, at least a portion of at least one of the pair of blocks being slidably movable in the central channel via a motor.
20. The system of Claim 17, wherein the drive shaft is directly connectable to the engine.
21. The system of Claim 17, wherein the drive shaft is indirectly connectable to the engine.
22. The system of Claim 17, wherein the drive shaft is operatively connectable to the engine and driven thereby via a power transmission mechanism.
23. The system of Claim 17, wherein the drive shaft is operatively connectable to the engine and driven thereby via a motor.
24. The system of Claim 17, further comprising a reservoir operatively connectable to the clutch for providing the clutch fluid thereto.
25. The system of Claim 24, further comprising a valve for selectively releasing the clutch fluid from the reservoir.
26. The system of Claim 17, further comprising a controller for operating the fluid regulator.
27. The system of Claim 17, further comprising a sensor for measuring parameters of one of the clutch, the device, the engine and combinations thereof.
28. The system of Claim 17, further comprising a mounting bracket for rotationally mounting the drive shaft to a fixed surface.
29. The system of Claim 28, further comprising at least one bearing between the mounting bracket and the drive shaft.
30. The system of Claim 17, further comprising at least one bearing between the drive shaft and the eccentric shaft.
31. The system of Claim 17, wherein the plurality of cylinders are at 120 degree intervals about the eccentric shaft.
32. The clutch of Claim 17, wherein the device is one of a fan, a connector, a coupler, a gear, a pulley and combinations thereof.
33. A method of operating a clutch of an engine, comprising:

operatively connecting a clutch to the engine for selective rotation thereby, the clutch comprising:

a drive shaft operatively connectable to the engine for rotation thereby, the drive shaft having an opening extending therethrough;

an eccentric shaft positionable in the opening of the drive shaft and rotatable thereby, the eccentric shaft having a plurality of cylinders extending radially therethrough and a central channel extending longitudinally therethrough, the plurality of cylinders and the central channel having fluid communication therebetween;

an clutch fluid selectively flowing between the plurality of cylinders and the central channel;

a plurality of pistons, each of the plurality of pistons positioned in one of the plurality of cylinders and slidably movable therein in response to the flow of clutch fluid, the plurality of pistons having an outer end in constant contact with the drive shaft via a bearing; and a fluid regulator positionable in the central channel, the fluid regulator selectively restricting flow of at least a portion of the clutch fluid flowing between the plurality of cylinders and the central channel to selectively permit reciprocation of the plurality of pistons; and operatively connecting a device to the clutch for rotation therewith;
rotationally driving the clutch via the engine; and adjusting a rotational speed of the device by selectively activating the fluid regulator.
34. The method of Claim 33, wherein the step of rotationally driving comprises rotationally driving the drive shaft directly via the engine.
35. The method of Claim 33, wherein the step of rotationally driving comprises rotationally driving the drive shaft indirectly via the engine.
36. The method of Claim 33, wherein the clutch fluid comprises a carrier fluid with a plurality of magnetic particles therein and wherein the fluid regulator comprises a pair of opposing magnets positioned in the central channel with the clutch fluid flowing therebetween, the opposing magnets selectively generating an magnetic field therebetween for aligning at least a portion of the plurality of magnetic particles, the step of adjusting comprising adjusting a rotational speed of the device by selectively generating the magnetic field.
37. The system of Claim 33, wherein the clutch fluid comprises a motor fluid and wherein the fluid regulator comprises a pair of blocks positioned in the central channel with the activation flowing fluid therebetween, at least a portion of at least one of the pair of blocks being slidably movable in the central channel via a motor, the step of adjusting comprising adjusting a rotational speed of the device by selectively positioning the portion of the at least one of the pair of blocks.
38. The method of Claim 33, wherein the fluid regulator is operable between a minimum and maximum fluid flow.
39. The method of Claim 33, wherein the step of adjusting comprises adjusting a rotational speed of the device by selectively activating the fluid regulator based on at least one measured parameter.
40. The method of Claim 33, wherein the device is one of a fan, a connector, a coupler, a gear, a pulley and combinations thereof.
CA2764391A 2009-07-08 2010-06-11 Engine clutch and method of using same Expired - Fee Related CA2764391C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US12/499,318 2009-07-08
US12/499,318 US8235195B2 (en) 2009-07-08 2009-07-08 Engine clutch and method of using same
PCT/US2010/038266 WO2011005409A1 (en) 2009-07-08 2010-06-11 Engine clutch and method of using same

Publications (2)

Publication Number Publication Date
CA2764391A1 true CA2764391A1 (en) 2011-01-13
CA2764391C CA2764391C (en) 2014-01-14

Family

ID=42340745

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2764391A Expired - Fee Related CA2764391C (en) 2009-07-08 2010-06-11 Engine clutch and method of using same

Country Status (4)

Country Link
US (1) US8235195B2 (en)
EP (1) EP2452093A1 (en)
CA (1) CA2764391C (en)
WO (1) WO2011005409A1 (en)

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US563989A (en) * 1896-07-14 Friction-clutch
US2396352A (en) * 1942-10-31 1946-03-12 Carroll B Vickers Propeller transmission
US3448751A (en) * 1965-10-08 1969-06-10 Norco Products Inc Magnetic fluid pressure control
AU5692780A (en) * 1980-03-06 1980-07-03 Keness, J. Hydraulic cylinder-clutch transmission
US4518069A (en) 1982-11-01 1985-05-21 Elias Charles R Adjustable speed drive utilizing radially movable hollow pistons which act on a cam surface
JPH078620B2 (en) 1986-06-04 1995-02-01 日産自動車株式会社 Torque transmission device
EP0365824B1 (en) 1988-09-20 1994-06-01 Nissan Motor Co., Ltd. Rotational speed differential responsive type control coupling
US6186290B1 (en) 1997-10-29 2001-02-13 Lord Corporation Magnetorheological brake with integrated flywheel
US6318531B1 (en) 2000-06-20 2001-11-20 General Motors Corporation Magnetorheological fluid clutch
US6412618B1 (en) * 2000-06-27 2002-07-02 Eaton Corporation Ball-ramp-actuated friction clutch controlled by a particle-clutch
US6932917B2 (en) 2001-08-06 2005-08-23 General Motors Corporation Magnetorheological fluids
WO2004033929A1 (en) * 2002-10-03 2004-04-22 The Timken Company Clutch having a variable viscosity fluid
US7364025B2 (en) 2005-06-02 2008-04-29 Borgwarner Inc. Magnetorheological fan coupling
CN101539178B (en) 2008-03-19 2010-12-08 李礼然 Deflective transmission-type clutch

Also Published As

Publication number Publication date
CA2764391C (en) 2014-01-14
US8235195B2 (en) 2012-08-07
US20110005884A1 (en) 2011-01-13
WO2011005409A1 (en) 2011-01-13
EP2452093A1 (en) 2012-05-16

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EEER Examination request

Effective date: 20130821

MKLA Lapsed

Effective date: 20220613