ES361945A1 - A control device for a speed change mechanism. (Machine-translation by Google Translate, not legally binding) - Google Patents

A control device for a speed change mechanism. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES361945A1
ES361945A1 ES361945A ES361945A ES361945A1 ES 361945 A1 ES361945 A1 ES 361945A1 ES 361945 A ES361945 A ES 361945A ES 361945 A ES361945 A ES 361945A ES 361945 A1 ES361945 A1 ES 361945A1
Authority
ES
Spain
Prior art keywords
pressure
valve
control
valves
servo
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
ES361945A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Self Changing Gears Ltd
Original Assignee
Self Changing Gears Ltd
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 Self Changing Gears Ltd filed Critical Self Changing Gears Ltd
Publication of ES361945A1 publication Critical patent/ES361945A1/en
Expired legal-status Critical Current

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
    • 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
    • F16H61/02—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 characterised by the signals used
    • F16H61/0262—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 characterised by the signals used the signals being hydraulic
    • 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
    • F16H2716/00—Control devices for speed-change mechanisms of planetary gearings, with toothed wheels remaining engaged, e.g. also for devices to simplify the control or for synchronising devices combined with control devices
    • F16H2716/04—Control devices for speed-change mechanisms of planetary gearings, with toothed wheels remaining engaged, e.g. also for devices to simplify the control or for synchronising devices combined with control devices the control being hydraulic or pneumatic
    • F16H2716/06—Circuits thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Structure Of Transmissions (AREA)

Abstract

Pneumatically or hydraulically operated ratio-selecting brakes and clutches of a four forward speed and reverse planetary changespeed gear (not shown) on a motor-vehicle are controlled by servomotors (not shown) operated by control valves 11-15 which during a shift interval initially charge the appropriate servo at a high pressure to a point where the differential speed of the brake or clutch mating surfaces commences to fall, the pressure then being regulated to a reduced value to effect a smooth shock-free shift after completion of which the pressure is restored to the high level. As shown, the four forward speed servo control valves 11- 14 are each connected to respective pressure regulating valves 6-9 arranged in parallel between two further control valves 4 and 5 connected via a pressure reducing valve 3 and pressure regulating valve 2 to a reservoir 1, the reverse servo control valve 15 being connected by a regulating valve 10 only to the control valve 4, the control valves 4, 5 and 11-15 being such that each can be conditioned only to connect its ports A or B to its port C, i.e. to pressure or to exhaust for the servo valves 11-15, by electrical control signals conveyed by lines 16-22 under the control of the automatic gear-change control system as described in Specification 802,272, the signals conveyed by the lines 16 and 17 of the control valves 4 and 5 being utilized to modify the pressure level in accordance with accelerator position and governor controlled fuel supply. The pressure to each servo control valve 11-14 is determined by spring loaded means in each of the regulating valves 6-9 which are pressurized from control valve 4, the pressure being augmented via the control valve 5 such that during a shift interval, the control valve 5 is conditioned via line 17 to exhaust its port C via its port A to regulate the pressure of the appropriate servo valve 11-14 to the reduced valve for smooth shift after completion of which the pressure is restored to high level by signal 17 operation of valve 5 to reconnect ports B and C.
ES361945A 1967-12-29 1968-12-28 A control device for a speed change mechanism. (Machine-translation by Google Translate, not legally binding) Expired ES361945A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5900367 1967-12-29

Publications (1)

Publication Number Publication Date
ES361945A1 true ES361945A1 (en) 1971-02-16

Family

ID=10482868

Family Applications (1)

Application Number Title Priority Date Filing Date
ES361945A Expired ES361945A1 (en) 1967-12-29 1968-12-28 A control device for a speed change mechanism. (Machine-translation by Google Translate, not legally binding)

Country Status (5)

Country Link
JP (1) JPS4914658B1 (en)
DE (1) DE1817467C3 (en)
ES (1) ES361945A1 (en)
FR (1) FR1602228A (en)
GB (1) GB1265475A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4842130B1 (en) * 1970-03-18 1973-12-11
AU525952B2 (en) * 1978-01-24 1982-12-09 Lahive, John A. Mechanical automatic transmission
DE3607329A1 (en) * 1986-03-06 1987-09-17 Voith Gmbh J M CONTROL DEVICE FOR A MANUAL GEARBOX
DE3835295A1 (en) * 1988-10-17 1990-04-19 Rexroth Mannesmann Gmbh Valve arrangement for the control system of a gearbox

Also Published As

Publication number Publication date
DE1817467C3 (en) 1978-07-27
FR1602228A (en) 1970-10-26
DE1817467A1 (en) 1969-08-14
DE1817467B2 (en) 1977-12-01
JPS4914658B1 (en) 1974-04-09
GB1265475A (en) 1972-03-01

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