WO1990004119A1 - Dispositif de regulation et unite de commande pour transmission automatique a variation continue - Google Patents

Dispositif de regulation et unite de commande pour transmission automatique a variation continue Download PDF

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Publication number
WO1990004119A1
WO1990004119A1 PCT/EP1989/001150 EP8901150W WO9004119A1 WO 1990004119 A1 WO1990004119 A1 WO 1990004119A1 EP 8901150 W EP8901150 W EP 8901150W WO 9004119 A1 WO9004119 A1 WO 9004119A1
Authority
WO
WIPO (PCT)
Prior art keywords
lever
actuating device
adjustment
area
control
Prior art date
Application number
PCT/EP1989/001150
Other languages
German (de)
English (en)
Inventor
Hansjörg DACH
Horst Reiner Butz
Original Assignee
Zahnradfabrik 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 Zahnradfabrik Friedrichshafen Ag filed Critical Zahnradfabrik Friedrichshafen Ag
Publication of WO1990004119A1 publication Critical patent/WO1990004119A1/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
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H59/02—Selector apparatus
    • F16H59/04—Ratio selector apparatus
    • F16H59/06—Ratio selector apparatus the ratio being infinitely variable
    • 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/66—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings
    • F16H61/662—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members
    • F16H61/66254—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members controlling of shifting being influenced by a signal derived from the engine and the main coupling
    • F16H61/66259—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing specially adapted for continuously variable gearings with endless flexible members controlling of shifting being influenced by a signal derived from the engine and the main coupling using electrical or electronical sensing or control means

Definitions

  • the invention relates to an actuating device and a control for limiting the driving range of a continuously variable automatic transmission according to the preamble of claim 1.
  • a wide range i.e. a large number of positions
  • the engine braking effect can be adapted to the respective driving profile, so that the service brake does not have to be used, or at least not often, to maintain a limited speed.
  • the advantageous adjustment of the engine braking effect eliminates the need to continuously switch from just one braking position to the normal position for forward travel if the braking effect, measured on the slope gradient, is too strong.
  • the arrangement of these two functions one behind the other as a slide or in a swivel range is advantageous for handling but also for the connection to the actuators, both with a purely hydraulic as well as with a partially or completely electronic implementation of the functions of the actuating lever, while with the stepless influencing the engine speed limit down in particular the engine braking effect can be adjusted on downhill gradients, it is possible with a gear ratio down, z. B. on a winding uphill slope, to prevent a too frequent ratio adjustment when going down from the gas at the beginning of a tight curve.
  • the control device for the infinitely variable limitation of the engine speed or the gear ratio down can be individually, particularly advantageously, but also in combination with a pure hydraulic control, and can be conveniently connected to an electro-hydraulic control.
  • the selector slide of the adjusting device for setting the driving positions is coupled in a known manner with a manual switch valve and is thus implemented purely hydraulically, while the stepless adjustment range of the selector slide for influencing - restricting - the driving range during forward travel is electro-hydraulic, e.g. B. acts with a potentiometer as an actuator in connection with the selector slide, over notches in the stepless adjustment range of the selector slide, the practical handling by the driver can be further improved.
  • Fig. 1 an actuating device in connection with
  • FIG. 2 shows an actuating device in connection with a manual switching valve of a hydraulic control
  • 3 shows the division of the stroke of the selector slide / selector lever; 4 shows a representation of the stepless travel range limitation;
  • Fig. 5 shows an operating characteristic depending on the engine speed
  • the automatic transmission 3 consists of a
  • An electronic control unit 5 receives information about the line 42 from the throttle valve position 41,
  • an actuating device 1 with the Selector lever 11 is connected via line 13 to the electronic control unit 5, the selector lever 11 of the actuating device 13 being adjustable into the positions “P”, reverse gear “R”, neutral position “N”, forward travel “D” and restricted forward travel “B” . While the positions P to D are used to transmit electrical signals from fixed positions to the electronic control unit, the position B comprises an area (B_min., B_max.) In which the selector lever 11 can be continuously adjusted.
  • a separate actuating device 10 with the selector lever 110 and the area 14 can also be arranged for controlling the restricted forward travel.
  • a program switch 51 with several positions is also connected via line 52.
  • the throttle position 53 and the kick Down position 54 is fed via line 55 and brake actuation 56 via line 57 to the electronic control unit, via lines 59, 590 there are also solenoid valves 58, 580 of an electronic hydraulic control (not shown) for adjusting the transmission 3 with the electronic one Controller 5 connected, such as. B. the adjustment of the converter clutch 32 of the adjustment and contact pressure of the input and output gears 34, 35 of the belt transmission 33 and the reversing gear 36.
  • Fig. 2 shows again the actuating device 1 with the selector lever 11 and a manual valve 6 with the spool 61 of the hydraulic control device.
  • the selector lever 11 is mechanically connected to the spool 61 on the fork 62, so that the spool is also adjusted analogously in the positions P, R, N and D.
  • the line 63 of the manual control valve 6 is connected to the pressure medium source 66 and the lines 64 and 65 are connected to the clutches 360 of the reversing gear 36 for activating the forward or reverse travel.
  • the manual control valve 6 is also adjusted at the same time.
  • a stepless purely hydraulic limitation of the forward driving range
  • Engine brake valve 67 are acted upon via line 68 with a pressure dependent on the adjustment.
  • Markings or notches 12 are also arranged in area 14 to facilitate the in principle stepless adjustment for the restricted forward travel.
  • the transmission of the electrical signals from the actuating device 1 to the electronic control device 5 can preferably take place via a potentiometer 7 if the stepless travel range restriction is implemented electrically or electro-hydraulically.
  • the stroke of the manual shift lever 11 H_ll is shown in connection with the swivel range of a potentiometer 7, the positions R, N, D being assigned fixed angles and thus electrical quantities, the range B is B_min. to B_max. in principle steplessly divided, with the markings or notches 12 leading to graded electrical quantities, which are fed to the electronic control unit 5, in a manner analogous to the positions 120, in order to facilitate adjustment.
  • Position of the selector lever 11 is assigned a predetermined engine speed and translation limitation, so that with the adjustment in the area B, 14, z. B. as shown, engine speed limits between 2,000 and 3,000 revolutions and gear ratios between 0.78 and 0.49 are possible.
  • a characteristic curve K is plotted against the engine speed n_m (X axis) and the engine torque M_m (Y axis). Different characteristics can, as is known, via the program switch 51 for z. B. a fuel-saving automatic adjustment in the transmission (characteristic curve K) can be selected. Further characteristics for z. B. a sportier driving style up to the curve for maximum Acceleration b_max. can be called up via the program switch 51 insofar as they are stored in the electronic control unit.
  • the starting of an automatic transmission takes place in the N neutral position by the selector lever 11. If driving is to be carried out forwards, the actuating lever is adjusted to D, pressure medium being conducted via lines 63 and 64 to the forward gear clutch in the reversing gear 36. With the change in the throttle lever position 53, the throttle valve 41 is also adjusted so that the vehicle starts to move forward via the drive train.
  • the transmission 3, in particular the belt transmission 33, the torque converter 31 and the lock-up clutch 32 are automatically adjusted in accordance with the characteristic curve selected via the program switch 51 by the electronic control unit 5 and the electro-hydraulic control.
  • the throttle valve 41 can be adjusted directly via a coupling to the throttle lever adjustment 53, but also via the electronic control unit 5 - E-gas -. In position D, the entire driving range between the idling speed and the maximum speed and the maximum gear ratio and minimum gear ratio is selected by the automatic system in accordance with that selected using the program switch
  • the transmission control can be influenced in such a way that the transmission ratio is infinitely limited in accordance with the lever position downwards - in the direction of overdrive.
  • the transmission control can be influenced so that the normal control line - characteristic curve K -, z. B.
  • the continuously actuable lever can be separately in the driver's area in an actuator 10, z. B. as a brake lever 110 in connection with a hydrodynamic brake, or as described, as a selector lever 11 of a known actuating device 1 of an automatic transmission 3.
  • detents 12 or markings can be arranged, which are distributed over the entire area or are only partially arranged.
  • the infinitely variable travel range limitation can be implemented electro-hydraulically, but also purely electrically (electronically) as well as purely hydraulically. Reference numerals

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)

Abstract

Sont décrits un dispositif de régulation et une unité de commande pour une transmission automatique conçue avec une régulation de démultiplication mécanique à variation continue. Un levier sélecteur (11) pour limiter la plage de vitesse (F-b) est agencé dans un dispositif de régulation (1); lorsque ledit levier est réglé d'une manière variable en continu dans la plage (B, 14), la régulation de la transmission s'effectue de manière à fixer une limite inférieure à la démultiplication de la transmission (Ü) et/ou au régime moteur (n-m) en fonction du réglage du levier. L'effet de frein moteur peut ainsi être mieux adapté au profil de conduite en descente, et dans le cas d'une route de montagne sinueuse, la fréquence de réglage de la transmission peut être réduite. La plage de vitesse peut être limitée par des moyens hydrauliques uniquement ou, en particulier, par des moyens électrohydrauliques. Des encoches (12) réparties sur toute la plage de réglage (B, 14) facilitent le maniement du levier sélecteur (11).
PCT/EP1989/001150 1988-10-07 1989-09-30 Dispositif de regulation et unite de commande pour transmission automatique a variation continue WO1990004119A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3834177 1988-10-07
DEP3834177.8 1988-10-07

Publications (1)

Publication Number Publication Date
WO1990004119A1 true WO1990004119A1 (fr) 1990-04-19

Family

ID=6364619

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1989/001150 WO1990004119A1 (fr) 1988-10-07 1989-09-30 Dispositif de regulation et unite de commande pour transmission automatique a variation continue

Country Status (2)

Country Link
AU (1) AU4329789A (fr)
WO (1) WO1990004119A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0443424B1 (fr) * 1990-02-16 1994-11-30 FIAT AUTO S.p.A. Système de commande de transmission pour des véhicules comprenant d'entraînement de vitesses infinies
DE19503000A1 (de) * 1994-01-31 1995-08-10 Nissan Motor Steuerungssystem für ein kontinuierlich variables Getriebe
EP0681119A2 (fr) * 1994-05-02 1995-11-08 Aisin Aw Co., Ltd. Dispositif de commande de transmission de véhicule
US5688204A (en) * 1993-04-20 1997-11-18 Zf Friedrichshafen Ag Shifting device for a motor vehicle continuously variable transmission
EP0848191A1 (fr) * 1996-12-10 1998-06-17 VCST, naamloze vennootschap Procédé et dispositif de commande du rapport d'un variateur à courroie dans une unité de transmission d'un véhicule automobile
US6173227B1 (en) 1996-01-12 2001-01-09 Zf Friedrichshafen Ag Method of setting the transmission ratio of a continuously variable gear
EP2156073A4 (fr) * 2007-06-08 2018-04-25 Volvo Lastvagnar AB Procede de reglage d'une limite de vitesse de rotation de changement de rapport selectionnee de maniere automatique dans un vehicule

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2829533A (en) * 1956-03-05 1958-04-08 Battelle Development Corp Automatic transmission control system
EP0151522A1 (fr) * 1984-01-30 1985-08-14 Fuji Jukogyo Kabushiki Kaisha Système de commande pour un variateur continu de vitesse

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2829533A (en) * 1956-03-05 1958-04-08 Battelle Development Corp Automatic transmission control system
EP0151522A1 (fr) * 1984-01-30 1985-08-14 Fuji Jukogyo Kabushiki Kaisha Système de commande pour un variateur continu de vitesse

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0443424B1 (fr) * 1990-02-16 1994-11-30 FIAT AUTO S.p.A. Système de commande de transmission pour des véhicules comprenant d'entraînement de vitesses infinies
US5688204A (en) * 1993-04-20 1997-11-18 Zf Friedrichshafen Ag Shifting device for a motor vehicle continuously variable transmission
DE19503000A1 (de) * 1994-01-31 1995-08-10 Nissan Motor Steuerungssystem für ein kontinuierlich variables Getriebe
DE19503000B4 (de) * 1994-01-31 2006-06-29 Nissan Motor Co., Ltd., Yokohama Getriebesteuerungseinrichtung zur Steuerung eines kontinuierlich variables Getriebes
EP0681119A2 (fr) * 1994-05-02 1995-11-08 Aisin Aw Co., Ltd. Dispositif de commande de transmission de véhicule
EP0681119A3 (fr) * 1994-05-02 1997-06-11 Aisin Aw Co Dispositif de commande de transmission de véhicule.
US6173227B1 (en) 1996-01-12 2001-01-09 Zf Friedrichshafen Ag Method of setting the transmission ratio of a continuously variable gear
EP0848191A1 (fr) * 1996-12-10 1998-06-17 VCST, naamloze vennootschap Procédé et dispositif de commande du rapport d'un variateur à courroie dans une unité de transmission d'un véhicule automobile
BE1010795A3 (nl) * 1996-12-10 1999-02-02 Vcst Nv Werkwijze en inrichting voor het sturen van de overbrengingsverhouding van een riemvariator bij een transmissie-eenheid voor een motorvoertuig.
US6033339A (en) * 1996-12-10 2000-03-07 Vcsi, Naamloze Vennootschap Method and apparatus for controlling the transmission ratio of a belt variator in a transmission unit for a motor vehicle
EP2156073A4 (fr) * 2007-06-08 2018-04-25 Volvo Lastvagnar AB Procede de reglage d'une limite de vitesse de rotation de changement de rapport selectionnee de maniere automatique dans un vehicule

Also Published As

Publication number Publication date
AU4329789A (en) 1990-05-01

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