WO1991005184A1 - Commande de surmultiplication pour transmission hydrocinetique - Google Patents

Commande de surmultiplication pour transmission hydrocinetique Download PDF

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Publication number
WO1991005184A1
WO1991005184A1 PCT/GB1990/001445 GB9001445W WO9105184A1 WO 1991005184 A1 WO1991005184 A1 WO 1991005184A1 GB 9001445 W GB9001445 W GB 9001445W WO 9105184 A1 WO9105184 A1 WO 9105184A1
Authority
WO
WIPO (PCT)
Prior art keywords
input shaft
pinion carrier
power input
outer race
sun gear
Prior art date
Application number
PCT/GB1990/001445
Other languages
English (en)
Inventor
Kurt Gräf
Wilhelm Wehren
Rolf Ackermann
Original Assignee
Ford Motor Company Limited
Ford Werke Ag
Ford France S.A.
Ford Motor Company
Ford Motor Company Of Canada Limited
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 Ford Motor Company Limited, Ford Werke Ag, Ford France S.A., Ford Motor Company, Ford Motor Company Of Canada Limited filed Critical Ford Motor Company Limited
Publication of WO1991005184A1 publication Critical patent/WO1991005184A1/fr

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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
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/04—Combinations of toothed gearings only
    • F16H37/042—Combinations of toothed gearings only change gear transmissions in group arrangement
    • F16H37/046—Combinations of toothed gearings only change gear transmissions in group arrangement with an additional planetary gear train, e.g. creep gear, overdrive

Definitions

  • his invention relates o the field of automatic power transmission, particularly to an overdrive gearset for an automotive transmission.
  • U.S. Patent 4,649,763 describes a mechanical transmission in which gear shifts are made through operation of a hydraulic control valve system, the transmission having a torque converter, a planetary gear arrangement in the form of planetary overdrive gearset and a Simpson gearset.
  • the turbine shaft of the torque converter is drivably connected to the planetary gear carrier of an overdrive gearset such that the planetary gear carrier includes a hub connected to the turbine shaft by serrations.
  • the hub of the planetary carrier receives the inner bearing of an overrunning clutch, by which the driving torque in three lower forward speeds is transmitted to a central shaft drivably connected to the input element of the Simpson gearset.
  • the hub of the planetary carrier must transmit driving torque from the turbine shaft to the inner bearing race of the overrunning clutch by way of clamping members to a pot-shaped attachment of the central shaft.
  • the hub of the planetary carrier must support the front end of the central shaft radially and axially.
  • Th,e invention seeks to provide an automatic transmission able to transmit high driving torque through an overdrive gearset operating with a transmission able to produce three lower speed ratios.
  • a .nultiple speed transmission mechanism comprising a housing and multiple ratio gearing located in said housing, a hydrokinetic torque converter, a turbine shaft of said torque converter connected to a driving member, an overdrive gear mechanism comprising a planetary gearset disposed between the torque converter and the multiple ratio gearing, said planetary gearset including a ring gear drivably connected to an input of the multiple ratio gearing, a sun gear, a set of planet pinions meshing with the ring gear and the sun gear, and a planet pinion carrier rotatably supporting the planet pinions, the turbine shaft connected drivably to the pinion carrier; brake means including a brake drum connected to the sun gear for releasably holding the brake drum against rotation; clutch means for releasably connecting the pinion carrier and the brake drum; and overrunning clutch means for-producing a one driving connection between the pinion carrier and the input of the multiple gearing.
  • the invention further provides an overdrive gear mechanism as hereinafter set forth in Claim 4 of the appended claims.
  • the invention achieves its desired a m ⁇ cause the connection between the turbine shaft and the planetary gear carrier of the overdrive gearset includes an inner bearing race formed integrally on a thickened flange of the turbine shaft, the flange having a shoulder defining meshing teeth drivably connected with meshing teeth on the internal periphery of the planetary gear carrier.
  • the driving torque which is increased in the starting range of the torque converter, can be transmitted directly by the blocking members of the overrunning clutch to a pot- shaped attachment of the central shaft. Therefore, no weak spots are caused by notched connections in the torque transmission path.
  • FIG. 1 The figure shows a detail of an overdrive gearset for a hydrokinetic mechanical transmission for motor vehicles.
  • the complete arrangement of this transmission is illustrated in U.S. Patent 4,649,763.
  • Fir re 1A of the patent illustrates a hydrokinetic, mechanical transmission for which the overdrive gearset of the present invention can be used.
  • the complete disclosure of U.S. patent 4,649,763 is herein incorporated by reference.
  • a turbine shaft having one end connected to ' the turbine hub of a hydrokinetic torque converter has a shank portion 1, a thickened flange portion 2 and a journal portion 3.
  • a planetary overdrive gearset 4 which includes sun gear 5, ring gear 6 and planetary pinions 7, engaged with the ring gear and sun gear, rotatably mounted on planetary pinion shafts 9 and supported on a planetary pinion carrier 8.
  • Sun gear 5 is drivably connected at one axial end by a radial connector 10 to a hub portion 11 of a drum-shaped component 12 forming a cylinder on an actuating servo 13.
  • This servo operates first clutch CL1 for the overdrive gearset 4.
  • the drum-shaped component 12 is rotatably mounted by a bearing bushing 14 on attachment 15 formed on the pump casing 16, which seals the transmission casing at the front.
  • Ring gear 6 is drivably connected by meshing teeth L7 to a cylindrical attachment 18 located on the front end of central shaft 19, which transmits input torque to a multiple speed ratio gearset located behind shaft 19.
  • the thickened flanged portion 2 of the turbine shaft and attachment 18 of the central shaft 19 form the inner bearing race and the outer bearing race, respectively, of an overrunning clutch 20.
  • the central shaft 19 is supported at its front end on the journal portion 3 of the turbine shaft 1 by a radial needle bearing 21.
  • Shaft 19 is cn-ially on the thickened flange portion of the turbine shaft by an axial needle bearing 22. Torque produced by an engine is transmitted through a torque converter by shaft 19 to the gearset 4.
  • Planetary gear carrier 8 includes a front cage portion 23 and a rear disc portion 24, which rotatably support planetary pinion shafts 9,
  • the planet pinions 7 are rotatably mounted on pinion shafts 9 by needle bearings 25.
  • a shoulder 26 Located on the drive side of the thickened flange portion 2 of the turbine shaft is a shoulder 26, on which are formed gear teeth 27 in meshing engagement with teeth 29 formed on the internal periphery 28 of the rear disc portion 24 of the planetary carrier 8.
  • the torque transmission path is not interrupted by serrations, but instead is provided by the unitary design of the inner bearing race of the overrunning clutch 20 located on the thickened flange 2 of the turbine shaft. With this arrangement, higher driving torque can be transmitted within the space provided.
  • the meshing connection between the teeth on shoulder 26 and the teeth on the internal periphery 28 of the rear disc portion 24 of the carrier 8 is a simple and low cost arrangement.

Landscapes

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

Abstract

Transmission hydrocinétique automobile comprenant un convertisseur de couple, une commande d'engrenage planétaire de surmultiplication (4) et une commande d'engrenage Simpson installés dans un carter de boîte de vitesses. L'arbre de turbine (1) est relié de manière amovible à un porte-pignons satellite (8) de la commande de surmultiplication (4). Un engrenage solaire (5) est relié au tambour (12) d'un frein à commande hydraulique (B1) et une couronne dentée (6) est reliée à un arbre central (19) qui transmet l'effort de torsion à l'entrée d'une commande d'engrenage Simpson. L'engrenage solaire (5) est maintenu par le frein (B1) et la commande de surmultiplication (4) est reliée au porte-pignons satellite par un premier embrayage (CL1) dans lequel la commande (4) est bloquée par un embrayage unidirectionnel (20) installé en parallèle entre le chemin intérieur de roulement sur le porte-pignons et un chemin extérieur de roulement sur l'arbre central. Le chemin intérieur est formé intégralement sur une partie latérale (2) de l'arbre de turbine (1) et ses dents (27) s'engrènent avec celles (29) de la périphérie intérieure (28) du porte-pignons.
PCT/GB1990/001445 1989-09-27 1990-09-19 Commande de surmultiplication pour transmission hydrocinetique WO1991005184A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3932218 1989-09-27
DEP3932218.1 1989-09-27

Publications (1)

Publication Number Publication Date
WO1991005184A1 true WO1991005184A1 (fr) 1991-04-18

Family

ID=6390292

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1990/001445 WO1991005184A1 (fr) 1989-09-27 1990-09-19 Commande de surmultiplication pour transmission hydrocinetique

Country Status (1)

Country Link
WO (1) WO1991005184A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994012810A1 (fr) * 1992-11-27 1994-06-09 Fichtel & Sachs Ag Unite de consommation d'energie entrainee par engrenage planetaire
DE4300146A1 (de) * 1993-01-08 1994-07-14 Zwl Zahnradwerk Leipzig Gmbh Planetengetriebe zur Drehzahlanpassung für den Antrieb von Nebenaggregaten von Verbrennungsmotoren
US5358456A (en) * 1991-06-07 1994-10-25 Fichtel & Sachs Ag Gear unit for combination with an auxiliary power consuming unit of a motor-vehicle
WO2007076749A2 (fr) * 2005-12-22 2007-07-12 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Systeme combine de conversion et de transmission de couple et procede correspondant

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036081A (en) * 1975-03-06 1977-07-19 Toyota Jidosha Kogyo Kabushiki Kaisha Overdrive mechanism for automotive power transmission
US4649763A (en) * 1984-05-12 1987-03-17 Ford Motor Company Multiple-speed, hydrokinetic transmission
US4798103A (en) * 1987-01-28 1989-01-17 Chrysler Motors Corporation Automatic transmission with add-on overdrive

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036081A (en) * 1975-03-06 1977-07-19 Toyota Jidosha Kogyo Kabushiki Kaisha Overdrive mechanism for automotive power transmission
US4649763A (en) * 1984-05-12 1987-03-17 Ford Motor Company Multiple-speed, hydrokinetic transmission
US4798103A (en) * 1987-01-28 1989-01-17 Chrysler Motors Corporation Automatic transmission with add-on overdrive

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5358456A (en) * 1991-06-07 1994-10-25 Fichtel & Sachs Ag Gear unit for combination with an auxiliary power consuming unit of a motor-vehicle
WO1994012810A1 (fr) * 1992-11-27 1994-06-09 Fichtel & Sachs Ag Unite de consommation d'energie entrainee par engrenage planetaire
DE4300146A1 (de) * 1993-01-08 1994-07-14 Zwl Zahnradwerk Leipzig Gmbh Planetengetriebe zur Drehzahlanpassung für den Antrieb von Nebenaggregaten von Verbrennungsmotoren
WO2007076749A2 (fr) * 2005-12-22 2007-07-12 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Systeme combine de conversion et de transmission de couple et procede correspondant
WO2007076749A3 (fr) * 2005-12-22 2007-08-23 Luk Lamellen & Kupplungsbau Systeme combine de conversion et de transmission de couple et procede correspondant

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