GB1457888A - Automatic gearboxes - Google Patents

Automatic gearboxes

Info

Publication number
GB1457888A
GB1457888A GB4781574A GB4781574A GB1457888A GB 1457888 A GB1457888 A GB 1457888A GB 4781574 A GB4781574 A GB 4781574A GB 4781574 A GB4781574 A GB 4781574A GB 1457888 A GB1457888 A GB 1457888A
Authority
GB
United Kingdom
Prior art keywords
nov
automatic gearboxes
predetermined
heading
matter
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
GB4781574A
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.)
Automotive Products PLC
Original Assignee
Automotive Products PLC
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 Automotive Products PLC filed Critical Automotive Products PLC
Priority to GB4781674A priority Critical patent/GB1457889A/en
Priority to GB4781574A priority patent/GB1457888A/en
Priority claimed from GB5411273A external-priority patent/GB1457887A/en
Priority to US05/717,588 priority patent/US4117747A/en
Publication of GB1457888A publication Critical patent/GB1457888A/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
    • F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
    • F16H2059/006—Overriding automatic control

Landscapes

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

Abstract

1457888 Change speed control AUTOMOTIVE PRODUCTS Ltd 12 Nov 1974 [21 Nov 1973] 47815/74 Heading F2D The subject-matter is the same as that of the main application, but the claims are directed to the solenoid operated pressure modulating valve which increases servo pressure above a predetermined throttle opening, such increase being inhibited above a predetermined vehicle speed.
GB4781574A 1973-11-21 1973-11-21 Automatic gearboxes Expired GB1457888A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB4781674A GB1457889A (en) 1973-11-21 1973-11-21 Automatic gearboxes
GB4781574A GB1457888A (en) 1973-11-21 1973-11-21 Automatic gearboxes
US05/717,588 US4117747A (en) 1973-11-21 1976-08-25 Electronic control system for automatic gearboxes

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB5411273A GB1457887A (en) 1973-11-21 1973-11-21 Automatic gearboxes
GB4781574A GB1457888A (en) 1973-11-21 1973-11-21 Automatic gearboxes
US52214274A 1974-11-08 1974-11-08

Publications (1)

Publication Number Publication Date
GB1457888A true GB1457888A (en) 1976-12-08

Family

ID=27260026

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4781574A Expired GB1457888A (en) 1973-11-21 1973-11-21 Automatic gearboxes

Country Status (1)

Country Link
GB (1) GB1457888A (en)

Similar Documents

Publication Publication Date Title
GB1386973A (en) Control valve mechanism
GB1378378A (en) Hydraulic control valve
GB1155199A (en) Improvements relating to Gearboxes
CA995200A (en) Differential solenoid valve for fluid control
GB1430645A (en) Automatic vehicle control system
YU145874A (en) Automatic engaging valve,particularly for hydraulic control devices of motor vehicles
GB1154328A (en) Improvements in Vehicle Clutch Control Mechanisms
GB1360880A (en) Diaphragm assembly
GB1409470A (en) Control valve suitable for controlling hydraulically actuated forward and reverse clutches
GB1039600A (en) Automatic change-speed transmission
GB1464143A (en) Valve mechanism for a hydraulic elevator
GB1176062A (en) Variable-Speed Transmission Hydraulic Control.
GB1491734A (en) Means for controlling pressure within a compartment
GB1276280A (en) Multiple ratio power transmission mechanism
GB1403015A (en) Autopilot systems for marine and other vessels
GB1481837A (en) Control system for vehicle transmission
GB1445377A (en) Hydraulic control circuit for vehicle automatic transmission
GB1457888A (en) Automatic gearboxes
GB1091940A (en) Control mechanism for regulating the speed, drive direction, drive ratio and the like of a power system
GB1535930A (en) Speed responsive control device
GB1437232A (en) Lever valve control mechanism
JPS5316159A (en) Parallel shaft type speed converter
GB898935A (en) Automatic variable speed transmission controls
GB1352297A (en) Flow control valves
GB1464724A (en) Fluid flow control valves

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee