GB2327990B - Method for determining the fill time of a transmission clutch - Google Patents

Method for determining the fill time of a transmission clutch

Info

Publication number
GB2327990B
GB2327990B GB9824449A GB9824449A GB2327990B GB 2327990 B GB2327990 B GB 2327990B GB 9824449 A GB9824449 A GB 9824449A GB 9824449 A GB9824449 A GB 9824449A GB 2327990 B GB2327990 B GB 2327990B
Authority
GB
United Kingdom
Prior art keywords
speed
torque converter
determining
transmission
friction device
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 - Fee Related
Application number
GB9824449A
Other versions
GB2327990A (en
GB9824449D0 (en
Inventor
Randall M Mitchell
Todd D Creger
James R Talbott
Gregory L Williamson
Richard B League
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.)
Caterpillar Inc
Original Assignee
Caterpillar Inc
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
Priority claimed from US08/421,724 external-priority patent/US5580332A/en
Application filed by Caterpillar Inc filed Critical Caterpillar Inc
Publication of GB9824449D0 publication Critical patent/GB9824449D0/en
Publication of GB2327990A publication Critical patent/GB2327990A/en
Application granted granted Critical
Publication of GB2327990B publication Critical patent/GB2327990B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F16H61/04—Smoothing ratio shift
    • F16H61/06—Smoothing ratio shift by controlling rate of change of fluid pressure
    • F16H61/061—Smoothing ratio shift by controlling rate of change of fluid pressure using electric control means
    • 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
    • F16H59/36—Inputs being a function of speed
    • F16H59/46—Inputs being a function of speed dependent on a comparison between speeds
    • F16H2059/465—Detecting slip, e.g. clutch slip ratio
    • F16H2059/467—Detecting slip, e.g. clutch slip ratio of torque converter
    • 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
    • F16H61/04—Smoothing ratio shift
    • F16H61/06—Smoothing ratio shift by controlling rate of change of fluid pressure
    • F16H61/061—Smoothing ratio shift by controlling rate of change of fluid pressure using electric control means
    • F16H2061/062—Smoothing ratio shift by controlling rate of change of fluid pressure using electric control means for controlling filling of clutches or brake servos, e.g. fill time, fill level or pressure during filling

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Transmission Device (AREA)

Abstract

In an automatic transmission which includes a torque converter and a planetary transmission with both direction and speed friction devices (clutches/brakes), the time at which a fluid-operated direction friction device substantially fills with fluid during a shift in which one direction friction device is off-going and another is on-coming is determined by monitoring the input and output speeds of the torque converter. The speed ratio of the torque converter is calculated and compared a reference value. It is determined-that the on-coming direction friction device has filled when the torque converter speed ratio increases relative to the reference value. Also described is a method of determining the filling of a speed clutch by comparing the transmission output speed with an intermediate transmission speed.
GB9824449A 1995-04-13 1996-02-26 Method for determining the fill time of a transmission clutch Expired - Fee Related GB2327990B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/421,724 US5580332A (en) 1995-04-13 1995-04-13 Method for determining the fill time of a transmission clutch
GB9604025A GB2300887B (en) 1995-04-13 1996-02-26 Method for determining the fill time of a transmission clutch

Publications (3)

Publication Number Publication Date
GB9824449D0 GB9824449D0 (en) 1999-01-06
GB2327990A GB2327990A (en) 1999-02-10
GB2327990B true GB2327990B (en) 1999-04-07

Family

ID=26308804

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9824449A Expired - Fee Related GB2327990B (en) 1995-04-13 1996-02-26 Method for determining the fill time of a transmission clutch

Country Status (1)

Country Link
GB (1) GB2327990B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012144207A1 (en) 2011-04-19 2012-10-26 マツダ株式会社 Automatic transmission control method and control device, and automatic transmission system
CN102635689B (en) * 2012-04-28 2015-07-29 山推工程机械股份有限公司 Gear-shifting control method, system and the engineering machinery for the work of drawing
CN102644728B (en) * 2012-04-28 2015-07-29 山推工程机械股份有限公司 Gear-shifting control method, system and the engineering machinery for the work of drawing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4796490A (en) * 1987-12-22 1989-01-10 General Motors Corporation Event sequenced clutch-to-clutch downshift for an electronically controlled transmission
EP0435372B1 (en) * 1989-12-26 1994-11-09 General Motors Corporation Method of controlling gear change in an automatic transmission

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4796490A (en) * 1987-12-22 1989-01-10 General Motors Corporation Event sequenced clutch-to-clutch downshift for an electronically controlled transmission
EP0435372B1 (en) * 1989-12-26 1994-11-09 General Motors Corporation Method of controlling gear change in an automatic transmission

Also Published As

Publication number Publication date
GB2327990A (en) 1999-02-10
GB9824449D0 (en) 1999-01-06

Similar Documents

Publication Publication Date Title
GB2300887B (en) Method for determining the fill time of a transmission clutch
DE69108343D1 (en) Procedure for shifting down an automatic transmission.
US6259983B1 (en) Hydraulic control system for automatic transmission
US4662488A (en) Control system for a clutch interposed between input and output shafts of hydrodynamic power transmitting device
EP0627336A3 (en) Shift control system for automatic transmissions.
US6955629B2 (en) Shift control apparatus for an automatic transmission
US6634988B2 (en) Transmission shift control
US5301783A (en) Dual pressure accumulator
GB2107010B (en) Control system for an automatic transmission
EP0742392B1 (en) Automatic transmission control apparatus
GB2327990B (en) Method for determining the fill time of a transmission clutch
CA2298817A1 (en) Slip-based shift control system
US6449550B1 (en) Method for motor reduction while closing the bridging clutch of an automatic transmission for vehicles
US5411451A (en) Control system for controlling the pressure of the oncoming servo hydraulic pressure based on a predicted time to sync from output shaft acceleration in automatic transmission
KR960034812A (en) Control device of automatic transmission
EP0751324A3 (en) Shift flare control
DE60304698D1 (en) CONTROL PROCEDURE FOR AN AUTOMATIC GEARBOX
EP0573010B1 (en) Apparatus for controlling automatic transmission for vehicle
JP4193965B2 (en) Shift control device for automatic transmission
KR100293653B1 (en) Method for controlling shift of automatic transmission in vehicle
JPH0535782B2 (en)
JPH06123347A (en) Method of controlling speed ratio in automatic gear
JP2005233372A (en) Setting method for hydraulic pressure characteristic value and automatic transmission
JP3439616B2 (en) Hydraulic control device for automatic transmission
KR970075588A (en) Automatic transmission control device

Legal Events

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

Effective date: 20130226