WO1994013980A1 - Transmission a convertisseur de couple et a train planetaire - Google Patents

Transmission a convertisseur de couple et a train planetaire Download PDF

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Publication number
WO1994013980A1
WO1994013980A1 PCT/CA1993/000534 CA9300534W WO9413980A1 WO 1994013980 A1 WO1994013980 A1 WO 1994013980A1 CA 9300534 W CA9300534 W CA 9300534W WO 9413980 A1 WO9413980 A1 WO 9413980A1
Authority
WO
WIPO (PCT)
Prior art keywords
sun gear
teeth
planetary
gear
combination
Prior art date
Application number
PCT/CA1993/000534
Other languages
English (en)
Inventor
Irwin W. KNIGHT
Original Assignee
Ivat Technologies 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
Priority claimed from CA002085022A external-priority patent/CA2085022C/fr
Application filed by Ivat Technologies Inc. filed Critical Ivat Technologies Inc.
Priority to AU56214/94A priority Critical patent/AU5621494A/en
Publication of WO1994013980A1 publication Critical patent/WO1994013980A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
    • F16H47/06—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the hydrokinetic type
    • F16H47/08—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the hydrokinetic type the mechanical gearing being of the type with members having orbital motion
    • F16H47/085—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the hydrokinetic type the mechanical gearing being of the type with members having orbital motion with at least two mechanical connections between the hydraulic device and the mechanical transmissions

Definitions

  • This invention relates to automatic transmissions and more particularly to an automatic transmission having a torque converter and a planetary gear train.
  • Known automatic transmissions use torque-converter couplings with planetary gear trains.
  • the gear trains can supply one or more gear reductions and reverse, depending upon the design, by simultaneously engaging or locking various elements of the planetary systems.
  • the combination comprises a first sun gear fixedly mounted to the output shaft; a first planetary gear meshing with the sun gear; a carrier to which the planetary gear is mounted for rotation and which is rotated by the input shaft; a second planetary gear rotated by the first planetary gear; and a drive shaft in co-axial alignment with the output shaft and having a second sun gear which is fixedly mounted thereon and which meshes with the second planetary gear.
  • Figure 1 is a perspective view of the combination shown in conjunction with a fly wheel, clutch and throw-out gear of a conventional power train;
  • Figure 2 is a plan view of the components illustrated in Figure 1 , shown partly cut away, together with a conventional reversing mechanism;
  • Figure 3 is an elevation of a portion of the planetary gear train
  • Figure 4 is another elevation of the planetary gear train.
  • a torque converter indicated generally 10 and a planetary gear train, generally 12 are shown in conjunction with a flywheel 14, a clutch 16 and a throw-out bearing unit 18.
  • the flywheel, clutch and bearing unit are of conventional construction.
  • the torque converter may be any device which changes the torque speed or mechanical advantage, between an input shaft and an output shaft.
  • the illustrated torque converter is of conventional construction where the input shaft 20 drives the pump impeller and energy is transferred from the impeller to the fluid within the converter as the pump builds up speed.
  • the fluid flows from the inlet radius to the outlet radius and discharges from the impeller. From the impeller, the fluid enters the turbine runner and causes the runner to rotate with resulting rotation of the output shaft 22.
  • the outer shell or body 24 of the turbine is connected to the input shaft 20 so that as the shaft rotates so too does the body.
  • the planetary gear train includes a first sun gear 26 which is keyed to output shaft 22.
  • the sun gear meshes with a pair of first planetary gears 28a,b. As illustrated the latter gears are disposed on diametrically opposite sides of the sun gear.
  • Each planetary gear is keyed to a separate planetary axle or shaft 30a, b and the shafts are mounted in bearings in a carrier plate 32.
  • the carrier plate is integral with the body 24 of the turbine so that as the body rotates so too does the carrier.
  • the carrier will be in the form of a hollow cylinder within which the torque converter and gears 26 and 28 are located.
  • the cylinder contains oil to lubricate the gears.
  • each planetary shaft on the side of the carrier opposite the first planetary gear is a second planetary gear 34a, b.
  • the latter gears mesh with a second sun gear 36.
  • the sun gear is keyed to a drive shaft 38 and that shaft drives a conventional reversing mechanism 40.
  • Drive shaft 38 and output shaft 22 are in co-axial alignment but are not connected to each other.
  • Sun gear 26 and second planetary gears 34 have outer diameters of equal length and have an equal number of teeth.
  • sun gear 36 and the first planetary gears 28 have outer diameters of equal length and have the same number of teeth.
  • the sun gear 26 has 24 teeth and the first planetary gears 28 have 36 teeth.
  • the planetary gears 28 rotate 24/36 or 2/ 3rds of a revolution.
  • the second planetary gears will likewise rotate 2/3rds of a revolution thereby causing the sun gear 36 to rotate 2/3 x 24/36 or 4/9ths of a revolution.
  • the drive shaft 38 rotates once.
  • Gears of such dimensions are appropriate in motor vehicles that have small to medium sized engines of no more than about 100 horsepower. In vehicles having larger engines gears of different dimensions may be more appropriate.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)

Abstract

La transmission automatique comporte un convertisseur de couple (10) et un train planétaire (12). Ce dernier comprend une première roue solaire (26) qui est clavetée sur l'arbre de sortie (22) du convertisseur de couple (10). Un premier pignon planétaire (28) s'engrène avec la roue solaire (26) et ce pignon (28) est claveté sur un axe (30). Ce dernier est monté en rotation sur un support (32) mis en rotation par l'arbre d'entrée (20) du convertisseur de couple (10) de sorte que lorsque le support (32) tourne, l'axe (30) tourne également. Un deuxième pignon planétaire (34) est également claveté sur l'axe (30) et ce pignon (34) s'engrène avec une deuxième roue solaire (36), laquelle fait tourner un arbre de commande (38).
PCT/CA1993/000534 1992-12-10 1993-12-10 Transmission a convertisseur de couple et a train planetaire WO1994013980A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU56214/94A AU5621494A (en) 1992-12-10 1993-12-10 Transmission having torque converter and planetary gear train

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CA002085022A CA2085022C (fr) 1992-12-10 1992-12-10 Transmission presentant un convertisseur de couple et un train planetaire
CA2,085,022 1992-12-10
US08/111,861 1993-08-26
US08/111,861 US6210297B1 (en) 1992-12-10 1993-08-26 Transmission having torque converter and planetary gear train

Publications (1)

Publication Number Publication Date
WO1994013980A1 true WO1994013980A1 (fr) 1994-06-23

Family

ID=25675728

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA1993/000534 WO1994013980A1 (fr) 1992-12-10 1993-12-10 Transmission a convertisseur de couple et a train planetaire

Country Status (2)

Country Link
AU (1) AU5621494A (fr)
WO (1) WO1994013980A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1142070C (zh) * 2000-12-20 2004-03-17 李定州 液力机械无级变速器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1209435A (fr) * 1958-08-06 1960-03-01 Perfectionnements aux transmissions à variation continue de vitesse
US3163056A (en) * 1961-11-10 1964-12-29 William J Clarke Torque and speed control units
GB1554182A (en) * 1976-05-04 1979-10-17 Read R Gearboxes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1209435A (fr) * 1958-08-06 1960-03-01 Perfectionnements aux transmissions à variation continue de vitesse
US3163056A (en) * 1961-11-10 1964-12-29 William J Clarke Torque and speed control units
GB1554182A (en) * 1976-05-04 1979-10-17 Read R Gearboxes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1142070C (zh) * 2000-12-20 2004-03-17 李定州 液力机械无级变速器

Also Published As

Publication number Publication date
AU5621494A (en) 1994-07-04

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