SE1850909A1 - Method and control unit for control unit for determining a shift sequence in a gearbox - Google Patents

Method and control unit for control unit for determining a shift sequence in a gearbox

Info

Publication number
SE1850909A1
SE1850909A1 SE1850909A SE1850909A SE1850909A1 SE 1850909 A1 SE1850909 A1 SE 1850909A1 SE 1850909 A SE1850909 A SE 1850909A SE 1850909 A SE1850909 A SE 1850909A SE 1850909 A1 SE1850909 A1 SE 1850909A1
Authority
SE
Sweden
Prior art keywords
determining
gearbox
control unit
seq
power source
Prior art date
Application number
SE1850909A
Other versions
SE542176C2 (en
Inventor
Afram Kourie
Anders Björkman
Frank Mohr
Marcus Engman
Richard Boström
Original Assignee
Scania Cv Ab
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 Scania Cv Ab filed Critical Scania Cv Ab
Priority to SE1850909A priority Critical patent/SE542176C2/en
Priority to DE102019004645.5A priority patent/DE102019004645B4/en
Publication of SE1850909A1 publication Critical patent/SE1850909A1/en
Publication of SE542176C2 publication Critical patent/SE542176C2/en

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
    • F16H61/0213—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 characterised by the method for generating shift signals
    • 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
    • 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
    • F16H61/0213—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 characterised by the method for generating shift signals
    • F16H2061/0216—Calculation or estimation of post shift values for different gear ratios, e.g. by using engine performance tables
    • 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
    • F16H2061/0444—Smoothing ratio shift during fast shifting over two gearsteps, e.g. jumping from fourth to second gear
    • 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
    • F16H2061/0444—Smoothing ratio shift during fast shifting over two gearsteps, e.g. jumping from fourth to second gear
    • F16H2061/0448—Smoothing ratio shift during fast shifting over two gearsteps, e.g. jumping from fourth to second gear using a particular sequence of gear ratios or friction members
    • 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
    • F16H2302/00—Determining the way or trajectory to new ratio, e.g. by determining speed, torque or time parameters for shift transition
    • 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
    • F16H2306/00—Shifting
    • F16H2306/14—Skipping gear shift
    • 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
    • F16H59/44—Inputs being a function of speed dependent on machine speed of the machine, e.g. the vehicle
    • 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
    • F16H59/48—Inputs being a function of acceleration

Abstract

A method and a control unit of a vehicle for providing an acceleration are presented. The method includes:- determining a desired vehicle speed v;- determining total number of upshift steps Sthe at least one gearbox has to be upshifted to accelerate to the desired vehicle speed v;- determining at least two candidate step sequences SEQ,SEQ, .. . , SEQincluding the determined total number of upshift steps Sdistributed on at least two consecutive upshift steps S,S, S;- determining a first power source speed ωwith which the at least one power source would rotate after the determined total number of upshift steps Swould have been taken by a one-step sequence SEQ;- determining at least two time periods Τ, T, ..., Tit would take for the at least one gearbox to be upshifted the determined total number of upshift steps Sby the at least two candidate step sequences SEQ, SEQ, . . . ,SEQsuch that the at least one power source reaches the determined first power source speed ω, respectively;- choosing a step sequence SEQassociated with a shortest time period T;- controlling the at least one gearbox based on the chosen step sequence SEQ.
SE1850909A 2018-07-17 2018-07-17 Method and control unit for control unit for determining a shift sequence in a gearbox SE542176C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE1850909A SE542176C2 (en) 2018-07-17 2018-07-17 Method and control unit for control unit for determining a shift sequence in a gearbox
DE102019004645.5A DE102019004645B4 (en) 2018-07-17 2019-07-02 Method and control unit for controlling at least one transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1850909A SE542176C2 (en) 2018-07-17 2018-07-17 Method and control unit for control unit for determining a shift sequence in a gearbox

Publications (2)

Publication Number Publication Date
SE1850909A1 true SE1850909A1 (en) 2020-01-18
SE542176C2 SE542176C2 (en) 2020-03-10

Family

ID=69148336

Family Applications (1)

Application Number Title Priority Date Filing Date
SE1850909A SE542176C2 (en) 2018-07-17 2018-07-17 Method and control unit for control unit for determining a shift sequence in a gearbox

Country Status (2)

Country Link
DE (1) DE102019004645B4 (en)
SE (1) SE542176C2 (en)

Also Published As

Publication number Publication date
DE102019004645B4 (en) 2023-10-19
SE542176C2 (en) 2020-03-10
DE102019004645A1 (en) 2020-01-23

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