An automatic transmission control device implements a downshift by disengagement of a clutch that is engaged in a gear position before the downshift. It is determined whether an engine state is in a predetermined region in which a change of an engine torque per a change of an accelerator pedal opening is smaller than that in another region, and the engine torque is within a predetermined range, and an engine rotational speed is within a predetermined range. It is determined whether an operating state is in a predetermined state of accelerator operation in which the accelerator pedal opening is larger than a predetermined value, and an accelerator pedal opening change rate has an absolute value smaller than a predetermined value. The downshift is inhibited in response to determination that the engine state is in the predetermined region and the operating state is in the predetermined state of accelerator operation.


    Access

    Download


    Export, share and cite



    Title :

    Automatic transmission control device


    Contributors:

    Publication date :

    2019-02-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F16H Getriebe , GEARING / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion



    AUTOMATIC TRANSMISSION CONTROL DEVICE AND AUTOMATIC TRANSMISSION METHOD

    OSHIMA TATSUYA / TSUNODA SUSUMU / KISHIMOTO YOSHIHISA | European Patent Office | 2017

    Free access

    AUTOMATIC TRANSMISSION CONTROL DEVICE

    TANAKA YUTA | European Patent Office | 2020

    Free access

    AUTOMATIC TRANSMISSION CONTROL DEVICE

    TOYOTA RYOHEY / TSUKIZAKI ATSUSHI / HIBI TOSHIFUMI et al. | European Patent Office | 2015

    Free access

    AUTOMATIC TRANSMISSION CONTROL DEVICE

    MATSUO KATSUHIRO / OGASAWARA SHUNSUKE | European Patent Office | 2017

    Free access

    AUTOMATIC TRANSMISSION CONTROL DEVICE

    AKAGAWA SHINYA | European Patent Office | 2025

    Free access