GEAR CHANGE CONTROL DEVICE

To perform suitable gear change control.SOLUTION: This gear change control device of an automatic transmission comprises: an acquisition part for acquiring, for example, a rotation number of an output shaft from an automatic transmission inputted with rotation power from an engine; a calculation par...

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Bibliographic Details
Main Authors SAITO KOICHI, NAGATO TOMOHIRO
Format Patent
LanguageEnglish
Japanese
Published 19.11.2020
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Summary:To perform suitable gear change control.SOLUTION: This gear change control device of an automatic transmission comprises: an acquisition part for acquiring, for example, a rotation number of an output shaft from an automatic transmission inputted with rotation power from an engine; a calculation part for calculating a first estimation engine rotation number of the engine at a start of a first inertia phase on the basis of the rotation number of the output shaft, an increase rate of the rotation number of the output shaft, a gear ratio of a currently-selected gear stage of the automatic transmission, and a first time after a start of gear change control to a succeeding gear stage from the currently-selected gear stage up to the start of the first inertia phase when a prescribed condition is satisfied; and an output part for outputting a gear change command to the succeeding stage from the currently-selected gear stage on the basis of the first estimation engine rotation number and a preset engine rotation number threshold.SELECTED DRAWING: Figure 5 【課題】好適な変速制御を実現する。【解決手段】実施形態の自動変速機の変速制御装置は、例えば、エンジンから回転動力が入力される自動変速機からの出力軸の回転数を取得する取得部と、所定の条件を満たした場合に、出力軸の回転数と、出力軸の回転数の増加率と、自動変速機の現在選択されているギア段におけるギア比と、現在選択されているギア段から次のギア段への変速制御を開始してから第1のイナーシャ相が開始されるまでの第1の時間と、に基づいて、第1のイナーシャ相開始時のエンジンの第1の推定エンジン回転数を算出する算出部と、第1の推定エンジン回転数と、予め定められたエンジン回転数閾値と、に基づいて、現在選択されているギア段から次のギア段への変速指示を出力する出力部と、を備える。【選択図】図5
Bibliography:Application Number: JP20190093207