WO2001035005A1 - Boite de vitesses automatique - Google Patents

Boite de vitesses automatique Download PDF

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Publication number
WO2001035005A1
WO2001035005A1 PCT/EP2000/011058 EP0011058W WO0135005A1 WO 2001035005 A1 WO2001035005 A1 WO 2001035005A1 EP 0011058 W EP0011058 W EP 0011058W WO 0135005 A1 WO0135005 A1 WO 0135005A1
Authority
WO
WIPO (PCT)
Prior art keywords
brakes
brake
automatic transmission
clutches
transmission
Prior art date
Application number
PCT/EP2000/011058
Other languages
German (de)
English (en)
Inventor
Manfred Bek
Original Assignee
Zf Friedrichshafen Ag
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 Zf Friedrichshafen Ag filed Critical Zf Friedrichshafen Ag
Publication of WO2001035005A1 publication Critical patent/WO2001035005A1/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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/304—Constructional features of the final output mechanisms the final output mechanisms comprising elements moved by electrical or magnetic force

Definitions

  • the present invention relates to an automatic transmission for motor vehicles with a hydrodynamic torque converter, with an input shaft and an output shaft and with wheelsets which are switched by means of clutches and brakes, the selective, pair-wise engagement of which determines different transmission ratios between the drive shaft and the output shaft and with one electronic control unit.
  • Electrohydraulic automatic transmissions usually consist of a starting unit, e.g. B. the hydrodynamic torque converter, from clutches and brakes, from a hydraulic control unit and an electronic transmission control unit together.
  • the electronic transmission control unit uses input variables to create the parameters required to control the automatic transmission. Input variables are signals provided by sensors and other electronic control devices, e.g. B. the engine control unit provided signals.
  • the electronic transmission control unit controls electromagnetic actuators via output signals, which are located in the hydraulic control unit. Circuits are initiated via the electromagnetic actuators, in which a corresponding clutch / brake combination is selected. In addition, the hydraulic pressure curve is during the electromagnetic actuators Circuit and the pressure level controlled outside the circuit.
  • an automatic transmission for motor vehicles in which the hydraulic control device is mounted on the underside, wherein it consists of an intake snorkel, a valve housing, an intermediate plate with a seal and a channel plate.
  • the duct plate and gear housing come together on two surfaces in the system.
  • the object of the present invention is to provide an automatic transmission for motor vehicles which has a reduced installation space, a shorter length and a lower weight than the conventional automatic transmission of the same power, with simplified actuation of the brakes or clutches present in the automatic transmission, with ver - Simple control and thus lower manufacturing costs.
  • Suitable electrical actuators have recently been developed in connection with wheel brakes for motor vehicles. This is how Ralf Schwarz's article, published by ATZ (Automobiltechnische Zeitschrift) 101 (1999) No. 6 on page 402 ff, describes wheel brake systems for motor vehicles, in which the braking force is applied to the individual wheels by electromechanical brake actuators. Such electromechanically operated wheel brakes are operated in a closed control loop. These brake systems, also called brake by ire systems, replace the hydraulic system that was previously used, whereby the electrical control signals of a mechatronic brake pedal or a higher-level control system are implemented directly using power electronics and electromechanical wheel brakes with application forces. Derar- Due to their vacuum independence, the electrically operated brake systems are also suitable for use in modern vehicles with optimized combustion engines or electric drives.
  • the electromechanical wheel brake described therein has a holder which is firmly connected to the steering knuckle of the vehicle.
  • An electronically commutated synchronous motor is provided as the electromechanical converter, the rotor position detection for the electronic commutation and for the control function being guaranteed by a resolver.
  • the rotor equipped with permanent magnets is toothed at its end on the lining side and thus simultaneously forms the sun gear of a subsequent planet gear.
  • the planet gears of the planetary gear are in engagement with the ring gear screwed into the brake housing and drive the planet carriers.
  • a roller screw drive is used to implement the rotational movement of the planetary gear m, the translational movement required for applying the friction brake.
  • the spindle of the roller screw drive is hollow and accommodates a force measuring device and a pressure piece to decouple the bending moments acting on the spindle.
  • a force measuring device Upon actuation of the brake of the drive-side brake lining via a pressure piece, the pressure stucco and the force measuring sensor by the movement of the spindle is pushed m towards the brake disc ⁇ ver.
  • the actuator-side coating is in contact with the disc, a fist is pulled with the fist-side coating and the entire housing until the fist-side coating also comes into contact.
  • the tension that builds up when you continue to operate Force is supported by the force measuring device and the roller screw drive on a central bearing, which in addition to the axial forces can also absorb radial forces.
  • a combination of needle bearing and deep groove ball bearing enables the relative rotary movement between the rotor and roller screw drive nut.
  • Such an actuator is also suitable for use in actuating the brakes and clutches in an automatic transmission due to the force applied by it, the small installation space required and the low costs due to the use of modern components.
  • the omission of the hydraulic components, as mentioned above, enables considerable reductions in the installation space, length and weight of the transmission.
  • Figure 1 shows the operation of an electric actuator between two m provided in an automatic transmission and brake disks
  • FIG. 2 shows a possible arrangement of two actuators, for example.
  • two brakes can be activated by a single actuator.
  • gate can be controlled, with m one end position, for example, the first brake being closed, with m brakes being open in its middle position (FIG. 1) and with the second brake being closed m in its second end position.
  • the brakes are closed by correspondingly displacing the spindle 3 against the brake segments 1, 2.
  • the brake pads are designated by ⁇ , 1 *, 2 2 W.
  • the schematically illustrated brake arrangement can be designed, for example, as a disk brake with an axially displaceable brake fist, the brake fist supporting the axial braking forces and the braking torque against the transmission housing, accommodating the motor 4 and containing the bearing of the spindle 3.
  • Another exemplary embodiment is a multi-disc or multi-disc brake with axially displaceable brake discs or multi-plates and an arrangement of the motor 4 fixed to the transmission housing.
  • the electrical actuators can be placed in places that were not previously available; the arrangement of two actuators 3, 4 and 3 ', 4' between rotating parts 5 and a switching device 6 is shown as an example in FIG. LIST OF REFERENCE NUMBERS

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

L'invention concerne une boîte de vitesses automatique pour véhicules automobiles, qui comprend un convertisseur de couple hydrodynamique, un arbre d'entraînement, un arbre de sortie et des jeux de roues qui sont commandés au moyen d'embrayages et de freins. Cette boîte de vitesses automatique comporte, pour l'actionnement des embrayages et des freins, des actionneurs électriques qui sont commandés par un appareil de commande électronique.
PCT/EP2000/011058 1999-11-11 2000-11-09 Boite de vitesses automatique WO2001035005A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999154201 DE19954201A1 (de) 1999-11-11 1999-11-11 Automatgetriebe
DE19954201.5 1999-11-11

Publications (1)

Publication Number Publication Date
WO2001035005A1 true WO2001035005A1 (fr) 2001-05-17

Family

ID=7928642

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/011058 WO2001035005A1 (fr) 1999-11-11 2000-11-09 Boite de vitesses automatique

Country Status (2)

Country Link
DE (1) DE19954201A1 (fr)
WO (1) WO2001035005A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2184032A (en) * 1935-11-16 1939-12-19 Eclipse Aviat Corp Driving mechanism
US2334402A (en) * 1941-12-13 1943-11-16 Borg Warner Transmission control
DE4041253A1 (de) 1990-12-21 1992-06-25 Zahnradfabrik Friedrichshafen Automatikgetriebe fuer kraftfahrzeuge
DE4137142A1 (de) * 1991-11-12 1993-05-13 Zahnradfabrik Friedrichshafen Schalteinrichtung fuer oedie schaltungsbetaetigung von mehrstufenschaltgetrieben fuer kraftfahrzeuge
DE19847621A1 (de) * 1997-10-16 1999-04-29 Toyota Motor Co Ltd Getriebe

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1159775B (de) * 1957-05-04 1963-12-19 Sira Societa Ind Ricerche Auto Schaltvorrichtung fuer ein Planetenraederwechselgetriebe, insbesondere fuer Kraftfahrzeuge
DE3243431A1 (de) * 1982-11-24 1984-05-24 Robert Bosch Gmbh, 7000 Stuttgart Kupplungsvorrichtung
US5517876A (en) * 1994-08-04 1996-05-21 Eaton Corporation Transmission spring loaded shift device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2184032A (en) * 1935-11-16 1939-12-19 Eclipse Aviat Corp Driving mechanism
US2334402A (en) * 1941-12-13 1943-11-16 Borg Warner Transmission control
DE4041253A1 (de) 1990-12-21 1992-06-25 Zahnradfabrik Friedrichshafen Automatikgetriebe fuer kraftfahrzeuge
DE4137142A1 (de) * 1991-11-12 1993-05-13 Zahnradfabrik Friedrichshafen Schalteinrichtung fuer oedie schaltungsbetaetigung von mehrstufenschaltgetrieben fuer kraftfahrzeuge
DE19847621A1 (de) * 1997-10-16 1999-04-29 Toyota Motor Co Ltd Getriebe

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
RALF SCHWARZ: "radbremssysteme für kraftfahrzeuge", ATZ 101, no. 6, 1999, pages 402FF
SCHWARZ RALF: "Bremskraft-Rekonstruktion für elektromechanische Fahrzeugbremsen", ATZ (AUTOMOBILTECHNISCHE ZEITSCHRIFT), vol. 101, no. 6, 1999, pages 402 - 412, XP000955405 *

Also Published As

Publication number Publication date
DE19954201A1 (de) 2001-05-17

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