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GB2629821A - Controlling gear shifts - Google Patents

Controlling gear shifts Download PDF

Info

Publication number
GB2629821A
GB2629821A GB2306970.1A GB202306970A GB2629821A GB 2629821 A GB2629821 A GB 2629821A GB 202306970 A GB202306970 A GB 202306970A GB 2629821 A GB2629821 A GB 2629821A
Authority
GB
United Kingdom
Prior art keywords
shift
signal
instructions
accelerator input
outputting
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.)
Pending
Application number
GB2306970.1A
Other versions
GB202306970D0 (en
Inventor
Owen Tom
Crean Robert
Johnson Sam
Mannion James
Cannon James
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.)
Jaguar Land Rover Ltd
Original Assignee
Jaguar Land Rover 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 Jaguar Land Rover Ltd filed Critical Jaguar Land Rover Ltd
Priority to GB2306970.1A priority Critical patent/GB2629821A/en
Publication of GB202306970D0 publication Critical patent/GB202306970D0/en
Publication of GB2629821A publication Critical patent/GB2629821A/en
Pending 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
    • F16H61/16—Inhibiting or initiating shift during unfavourable conditions, e.g. preventing forward reverse shift at high vehicle speed, preventing engine over speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/50—Architecture of the driveline characterised by arrangement or kind of transmission units
    • B60K6/54—Transmission for changing ratio
    • B60K6/547—Transmission for changing ratio the transmission being a stepped gearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B60W10/11—Stepped gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/30—Control strategies involving selection of transmission gear ratio
    • 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
    • F16H61/16—Inhibiting or initiating shift during unfavourable conditions, e.g. preventing forward reverse shift at high vehicle speed, preventing engine over speed
    • F16H2061/161—Inhibiting or initiating shift during unfavourable conditions, e.g. preventing forward reverse shift at high vehicle speed, preventing engine over speed by checking feasibility of shifts, i.e. determine if requested shift can be successfully completed and post shift values are in an acceptable range

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Transmission Device (AREA)

Abstract

A control system, for controlling an automatic transmission of, for example, a hybrid vehicle, the control system is configured to receive at step 302 a signal indicative of a speed parameter and receiving at step 304 a signal indicative of an accelerator input. At step 306 determining a target gear ratio based on the speed parameter and the accelerator input and at step 310 outputting a signal comprising instructions to cause initiation of a shift to the target gear ratio in dependence on a rate of decrease in the accelerator input being below a threshold rate. Outputting at step 314 a signal comprising instructions to cause cancellation of the shift to the target gear ratio in dependence on a rate of decrease in the accelerator input exceeding the threshold rate during a period between outputting the signal comprising instructions to cause initiation of the shift and a completion of the shift. Also claimed is an automatic transmission system, a vehicle, a method, and computer readable instructions, for controlling an automatic transmission.
GB2306970.1A 2023-05-11 2023-05-11 Controlling gear shifts Pending GB2629821A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2306970.1A GB2629821A (en) 2023-05-11 2023-05-11 Controlling gear shifts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2306970.1A GB2629821A (en) 2023-05-11 2023-05-11 Controlling gear shifts

Publications (2)

Publication Number Publication Date
GB202306970D0 GB202306970D0 (en) 2023-06-28
GB2629821A true GB2629821A (en) 2024-11-13

Family

ID=86872314

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2306970.1A Pending GB2629821A (en) 2023-05-11 2023-05-11 Controlling gear shifts

Country Status (1)

Country Link
GB (1) GB2629821A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4910298B1 (en) * 1969-03-18 1974-03-09
US4996893A (en) * 1987-12-17 1991-03-05 Kabushiki Kaisha Daikin Seisakusho Speed change control device in automatic transmission for automobile

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4910298B1 (en) * 1969-03-18 1974-03-09
US4996893A (en) * 1987-12-17 1991-03-05 Kabushiki Kaisha Daikin Seisakusho Speed change control device in automatic transmission for automobile

Also Published As

Publication number Publication date
GB202306970D0 (en) 2023-06-28

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