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GB1465053A - Automatic transmission control systems - Google Patents

Automatic transmission control systems

Info

Publication number
GB1465053A
GB1465053A GB821773A GB821773A GB1465053A GB 1465053 A GB1465053 A GB 1465053A GB 821773 A GB821773 A GB 821773A GB 821773 A GB821773 A GB 821773A GB 1465053 A GB1465053 A GB 1465053A
Authority
GB
United Kingdom
Prior art keywords
lines
sets
control unit
engine
control
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
GB821773A
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.)
Lucas Electrical Co Ltd
Original Assignee
Lucas Electrical Co 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 Lucas Electrical Co Ltd filed Critical Lucas Electrical Co Ltd
Priority to GB821773A priority Critical patent/GB1465053A/en
Priority to AU65589/74A priority patent/AU481358B2/en
Priority to FR7406255A priority patent/FR2218220B1/fr
Priority to DE19742407771 priority patent/DE2407771C2/en
Priority to JP1959874A priority patent/JPS49113966A/ja
Priority to IT2081074A priority patent/IT1007485B/en
Publication of GB1465053A publication Critical patent/GB1465053A/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
    • F16H61/0202—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 electric
    • F16H61/0204—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 electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
    • F16H61/0206—Layout of electro-hydraulic control circuits, e.g. arrangement of valves
    • 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
    • F16H2061/0075—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 a particular control method
    • F16H2061/0096—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 a particular control method using a parameter map

Landscapes

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

Abstract

1465053 Change-speed control LUCAS ELECTRICAL Ltd 12 Feb 1974 [20 Feb 1973] 8217/73 Heading F2D A control unit 16, selecting ratios in an automatic transmission on a motor vehicle, is controlled by a multi-bit digital input signal which it receives from a memory 10 in the form of a diode matrix having a number, e.g. sixteen, of first input lines 11a ... 11p, crossed by a similar number of second sets of input lines 12a ... 12p, each set 12 consisting of two separate lines with diodes, represented by dots, connected between the lines in a manner determined empirically in accordance with engine and transmission characteristics, the sets of lines being energized through decoders 14, 13 and analogue-digital converters 20, 18 by transducers 19, 17 responding respectively to engine parameters such as engine speed and throttle setting or intake depression. The decoder 14 operates to turn on one of sixteen sets of switches 15a ... 15p each of which connects one of the sets of lines 12a ... 12p to the control unit 16. For a given value of each of the two control parameters one of the lines 11 will be energized and one of the sets of switches 15 will connect one of the sets of lines 12 to the control unit 16, which will then operate to select the required gear ratio. Thus, for example, with a diode connection (dotted) representing 1 and no connection 0, 11a, 15a would produce a control signal 10, whilst 11b, 15p would produce 00.
GB821773A 1973-02-20 1973-02-20 Automatic transmission control systems Expired GB1465053A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB821773A GB1465053A (en) 1973-02-20 1973-02-20 Automatic transmission control systems
AU65589/74A AU481358B2 (en) 1974-02-14 Automatic transmission control systems
FR7406255A FR2218220B1 (en) 1973-02-20 1974-02-19
DE19742407771 DE2407771C2 (en) 1973-02-20 1974-02-19 Electric gear control device for an automatic transmission of a motor vehicle with internal combustion engine
JP1959874A JPS49113966A (en) 1973-02-20 1974-02-20
IT2081074A IT1007485B (en) 1973-02-20 1974-04-08 AUTOMATIC TRANSMISSION CONTROL EQUIPMENT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB821773A GB1465053A (en) 1973-02-20 1973-02-20 Automatic transmission control systems

Publications (1)

Publication Number Publication Date
GB1465053A true GB1465053A (en) 1977-02-23

Family

ID=9848182

Family Applications (1)

Application Number Title Priority Date Filing Date
GB821773A Expired GB1465053A (en) 1973-02-20 1973-02-20 Automatic transmission control systems

Country Status (5)

Country Link
JP (1) JPS49113966A (en)
DE (1) DE2407771C2 (en)
FR (1) FR2218220B1 (en)
GB (1) GB1465053A (en)
IT (1) IT1007485B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2715999C2 (en) * 1976-04-14 1984-01-19 Kabushiki Kaisha Komatsu Seisakusho, Tokyo Control device for an automatic transmission

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1655049A1 (en) * 1967-06-03 1971-08-05 Sattler Gustav Adolf Digital regulation of a controllable multi-step transmission for any control characteristics and motor characteristics
US3689753A (en) * 1969-09-23 1972-09-05 Lucas Industries Ltd Engine control systems
FR2082311A5 (en) * 1970-03-10 1971-12-10 Citroen Sa
SE356936B (en) * 1970-03-19 1973-06-12 Zahnradfabrik Friedrichshafen
DE2108987A1 (en) * 1971-02-25 1972-09-07 Robert Bosch Gmbh, 7000 Stuttgart Transmission control for step change transmissions in motor vehicles
GB1373952A (en) * 1971-03-05 1974-11-13 Lucas Industries Ltd Automatic transmission system
JPS4925380A (en) * 1972-06-21 1974-03-06

Also Published As

Publication number Publication date
FR2218220B1 (en) 1976-12-03
AU6558974A (en) 1975-08-14
IT1007485B (en) 1976-10-30
JPS49113966A (en) 1974-10-30
DE2407771A1 (en) 1974-08-22
FR2218220A1 (en) 1974-09-13
DE2407771C2 (en) 1987-01-22

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19940211