WO2006018607A1 - Mesure de couple dans un groupe motopropulseur - Google Patents

Mesure de couple dans un groupe motopropulseur Download PDF

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Publication number
WO2006018607A1
WO2006018607A1 PCT/GB2005/003118 GB2005003118W WO2006018607A1 WO 2006018607 A1 WO2006018607 A1 WO 2006018607A1 GB 2005003118 W GB2005003118 W GB 2005003118W WO 2006018607 A1 WO2006018607 A1 WO 2006018607A1
Authority
WO
WIPO (PCT)
Prior art keywords
coupling component
sensor
strain
disc coupling
torque
Prior art date
Application number
PCT/GB2005/003118
Other languages
English (en)
Inventor
Raymond David Lohr
Mark Lee
Arthur John Leigh
David Daniel George Vile
Paul Joseph Howse
Original Assignee
Transense Technologies Plc
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 Transense Technologies Plc filed Critical Transense Technologies Plc
Publication of WO2006018607A1 publication Critical patent/WO2006018607A1/fr
Priority to US11/939,242 priority Critical patent/US7770471B2/en
Priority to US12/489,575 priority patent/US8015886B2/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
    • G01L3/02—Rotary-transmission dynamometers
    • G01L3/14—Rotary-transmission dynamometers wherein the torque-transmitting element is other than a torsionally-flexible shaft
    • G01L3/1407—Rotary-transmission dynamometers wherein the torque-transmitting element is other than a torsionally-flexible shaft involving springs
    • G01L3/1428—Rotary-transmission dynamometers wherein the torque-transmitting element is other than a torsionally-flexible shaft involving springs using electrical transducers

Definitions

  • the present invention relates to methods of measuring torque within a powertrain as well as to apparatus for carrying out such methods.
  • a method of measuring torque in a shaft of a drive line including a disc coupling component comprising measuring the shear strain field on an axial surface of the disc coupling component and calculating the torque in the shaft using said strain measurements
  • the present invention further provides a drive coupling system comprising at least one shaft drivingly coupled to a disc coupling component for transmitting drive from said shaft, and at least one strain sensor mounted on an axial surface of the disc coupling component for measuring the shear strain field on said disc coupling component.
  • a drive coupling system comprising at least one shaft drivingly coupled to a disc coupling component for transmitting drive from said shaft, and at least one strain sensor mounted on an axial surface of the disc coupling component for measuring the shear strain field on said disc coupling component.
  • Reference above and hereinafter to an axial surface means a surface which is perpendicular to the shaft axis.
  • torque is measured within a power train by the measurement of the principal strains due to shear directly on the surface of flanged, disc or webbed sections of existing Powertrain components by using sensing elements placed on a surface perpendicular to the shaft axis.
  • the components are shaft input/output flanged couplings, flexplates or indeed any component that provides a web or disc surface that transmits torque through the powertrain.
  • the present invention derives from the recognition that the principal components of shear strain arising in a disc coupling component in a drive train are analogous to the strain field developed on the surface of the shaft in torsion, i.e. the principal strains are equal and opposite, tensile and compressive, and oriented at +/- 45° to the circumferential direction in the disc component.
  • the disc coupling components such as the flexplate which is used to connect a crankshaft to a torque converter in a typical powertrain with an automatic transmission
  • the web of a flanged coupling located, for example, between the gearbox output and the prop shaft can be used to mount a strain sensor which, due to size constraints, cannot be located directly on the shaft. This has the advantage of requiring little or no change to the leading dimensions of major components whilst enabling monitoring of the full torque transmitted between those components.
  • the strain sensor is a wireless sensor, in particular a SAW sensor, and it is particularly advantageous to use a SAW sensor having 2 active elements at different orientations so as to enable both principal strains to be monitored by a single sensor.
  • the sensor is preferably located on a web portion of disc coupling component through which torque between the input and output is transmitted.
  • This web portion may be suitably sized and shaped to concentrate the torsional (shear) strain and hence improve the resolution and accuracy of measurement.
  • Figure Ia is a front view of a flexplate which may be used in conjunction with the present invention to measure torque in a shaft of a drive train;
  • Figure Ib is a sectional side view through the flexplate of Figure Ia.
  • Figure 2 is a sectional view through a flanged coupling which may be used in conjunction with the present invention.
  • Figure 3 is a sectional view of a prior art arrangement.
  • a flexplate I 5 essentially a diaphragm which connects the crankshaft and the torque converter in a typical powertrain with automatic transmission, which is mounted on a crankshaft 4 which extends through an engine block 5.
  • the flexplate is configured with cutouts to provide the required flexibility, forming spokes 7 therebetween, and, as shown in Figure Ib, in the illustrated example a SAW sensor 8 is fastened to the engine block side of one of the spokes 7 for measuring the local strain field on the surface of the spoke, which is in turn proportional to the torque within the crank shaft 4.
  • a rotating coupler 2 which rotates with the flexplate and communicates with a stationary coupler 3 fastened to the engine block 5 for wireless transmission of signals from the SAW sensor.
  • the stationary coupler in the illustrated embodiment, is fastened to the block so as to maintain a small but consistent axial gap to the rotating coupler.
  • a SAW sensor 11 is mounted on a radial web 12 formed on a flanged coupling 13 such as that provided between the gearbox output and the propeller shaft of an engine. The web extends between the input and output connects of the coupling so that all torque transmitted therethrough passes through the web 12.
  • a rotating RF coupling 14 is fastened to the flanged plate 13 for rotation therewith and is electrically coupled to the SAW sensors 11.
  • a static RF coupling 15 is then mounted in juxtaposition with the rotating coupling 14 for receiving signals from the latter in the form of the output from the sensors.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

L'invention concerne un procédé permettant de mesurer un couple dans un arbre d'une chaîne cinématique comprenant un composant d'accouplement à disque tel qu'un plateau souple (1) ou un accouplement à bride (13), ainsi qu'un système d'accouplement d'entraînement permettant de mettre en oeuvre le procédé. Le composant d'accouplement à disque (1, 13) est monté entre une entrée d'entraînement (4) et une sortie d'entraînement de sorte que l'ensemble du couple transmis entre l'entrée et la sortie traverse ledit composant. Le composant d'accouplement à disque (1, 13) présente une partie s'étendant radialement qui peut comprendre une pluralité de bras (7) auxquels est fixé un capteur de contrainte à SAW, qui communique avec un coupleur stationnaire (3) fixé à un bloc-moteur (5) en vue d'une transmission sans fil de données provenant du capteur, le capteur de contrainte mesurant la contrainte dans le composant d'accouplement à disque (1, 13) à partir de laquelle le couple transféré dans l'arbre d'entrée (4) peut être calculé.
PCT/GB2005/003118 2004-08-16 2005-08-08 Mesure de couple dans un groupe motopropulseur WO2006018607A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US11/939,242 US7770471B2 (en) 2004-08-16 2007-11-13 Torque measurement within a powertrain
US12/489,575 US8015886B2 (en) 2004-08-16 2009-06-23 Torque measurement within a powertrain

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0418271A GB2417322A (en) 2004-08-16 2004-08-16 Measuring torque in the crankshaft of a powertrain
GB0418271.3 2004-08-16

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/939,242 Continuation-In-Part US7770471B2 (en) 2004-08-16 2007-11-13 Torque measurement within a powertrain

Publications (1)

Publication Number Publication Date
WO2006018607A1 true WO2006018607A1 (fr) 2006-02-23

Family

ID=33017595

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2005/003118 WO2006018607A1 (fr) 2004-08-16 2005-08-08 Mesure de couple dans un groupe motopropulseur

Country Status (2)

Country Link
GB (1) GB2417322A (fr)
WO (1) WO2006018607A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007067595A1 (fr) * 2005-12-08 2007-06-14 Honeywell International Inc. Capteur de couple d'onde acoustique d'élimination de déformation hors plan
US7389682B2 (en) 2006-03-17 2008-06-24 Gm Global Technology Operations, Inc. Method and apparatus for engine torque sensing

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2436149B (en) * 2006-03-15 2011-08-17 Transense Technologies Plc Torque measurement in flexible drive coupling plate
US7770471B2 (en) 2004-08-16 2010-08-10 Transense Technologies Plc Torque measurement within a powertrain
US8015886B2 (en) 2004-08-16 2011-09-13 Transense Technologies Plc Torque measurement within a powertrain
US7328625B2 (en) 2005-04-28 2008-02-12 Caterpillar Inc. Systems and methods for determining fatigue life
US7953559B2 (en) 2005-04-28 2011-05-31 Caterpillar Inc. Systems and methods for maintaining load histories
US7487066B2 (en) 2005-04-28 2009-02-03 Caterpillar Inc. Classifying a work machine operation
US7201044B1 (en) * 2005-09-27 2007-04-10 Honeywell International, Inc. Torque sensor integrated with engine components
US7472599B2 (en) 2006-06-30 2009-01-06 Caterpillar Inc. Strain sensing device
US7908928B2 (en) 2006-10-31 2011-03-22 Caterpillar Inc. Monitoring system
GB2453573A (en) * 2007-10-11 2009-04-15 Transense Technologies Plc Monitoring cylinder performance of an engine by measuring output torque from the crankshaft

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4135390A (en) * 1978-02-13 1979-01-23 General Motors Corporation Engine torque transducer using a spoked torque transmitting plate
DE4208522A1 (de) * 1992-03-18 1993-09-23 Hottinger Messtechnik Baldwin Drehmomentsensor
US5975136A (en) * 1995-09-08 1999-11-02 Trw Fahrwerksysteme Gmbh & Co. Kg Torsional sensor for a power-assisted steering device
US20030000309A1 (en) * 2001-06-29 2003-01-02 Anthony Lonsdale Torque measurement
GB2381069A (en) * 2001-10-16 2003-04-23 Transense Technologies Plc SAW sensor with improved temperature stability

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB939175A (en) * 1961-05-02 1963-10-09 Automotive Prod Co Ltd A device for the measurement of torque
DE2024422A1 (de) * 1970-05-20 1971-12-30 Malmedie & Co Maschf Meßkupplung insbesondere mit ineinander liegenden, ringförmigen Kupplungshälften
GB9004822D0 (en) * 1990-03-03 1990-04-25 Lonsdale Anthony Method and apparatus for measuring torque
EP0665423B1 (fr) * 1994-01-31 1999-12-15 Techno Fysica B.V. Elément de mesure pour mesurer la puissance d'un arbre, et bateau équipé d'un tel mesure
DE19719921C2 (de) * 1997-05-13 2003-05-15 Manner Gabriele Anordnung zur Erfassung des Drehmomentes an einer Welle mit einem Messflansch
US6269702B1 (en) * 1998-10-30 2001-08-07 Vernon A. Lambson Method and apparatus for measuring torque
GB0030405D0 (en) * 2000-12-13 2001-01-24 Transense Technologies Plc Wheel condition monitoring system
DE10138513B4 (de) * 2001-08-06 2004-04-08 Siemens Ag Drehmomentsensor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4135390A (en) * 1978-02-13 1979-01-23 General Motors Corporation Engine torque transducer using a spoked torque transmitting plate
DE4208522A1 (de) * 1992-03-18 1993-09-23 Hottinger Messtechnik Baldwin Drehmomentsensor
US5975136A (en) * 1995-09-08 1999-11-02 Trw Fahrwerksysteme Gmbh & Co. Kg Torsional sensor for a power-assisted steering device
US20030000309A1 (en) * 2001-06-29 2003-01-02 Anthony Lonsdale Torque measurement
GB2381069A (en) * 2001-10-16 2003-04-23 Transense Technologies Plc SAW sensor with improved temperature stability

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007067595A1 (fr) * 2005-12-08 2007-06-14 Honeywell International Inc. Capteur de couple d'onde acoustique d'élimination de déformation hors plan
US7380464B2 (en) 2005-12-08 2008-06-03 Honeywell International Inc. Out-of-plain strain elimination acoustic wave torque sensor
US7389682B2 (en) 2006-03-17 2008-06-24 Gm Global Technology Operations, Inc. Method and apparatus for engine torque sensing
DE102007012494B4 (de) * 2006-03-17 2014-07-03 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Maschinendrehmomenterfassung-Sensorsystem

Also Published As

Publication number Publication date
GB2417322A (en) 2006-02-22
GB0418271D0 (en) 2004-09-15

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