自動変速機の変速制御装置

Shift control device of automatic transmission

Abstract

PROBLEM TO BE SOLVED: To realize a system without requiring to worry about reduction in durability of a frictional engagement element, even if an engagement request is continuously outputted to a specific frictional engagement element, in shifting of an automatic transmission having a plurality of frictional engagement elements for shifting a shifting means. SOLUTION: This invention is a shift control device of the automatic transmission, and is characterized by arranging an oil temperature detecting means, arranging a workload calculating means for calculating a workload of the frictional engagement element in shifting, arranging a surface temperature estimating means for estimating the surface temperature from the workload, arranging a surface temperature lowering quantity estimating means for estimating a lowering quantity of the surface temperature on the basis of the oil temperature, a surface temperature lowering means for lowering the surface temperature estimated in the shifting by the estimated lowering quantity, and a shift regulating means for regulating so as not to perform a shift using the same frictional engagement element until the lowered surface temperature becomes the preset temperature. COPYRIGHT: (C)2007,JPO&INPIT
【課題】この発明は、変速手段を変速する複数の摩擦係合要素を備えた自動変速機の変速時において、特定の摩擦係合要素に連続して係合要求を出されても、摩擦係合要素の耐久性の低下を心配する必要のないシステムを実現することにある。 【解決手段】この発明は、自動変速機の変速制御装置において、オイル温度検出手段を設け、変速時における摩擦係合要素の仕事量を算出する仕事量算出手段を設け、仕事量から表面温度を推定する表面温度推定手段を設け、オイル温度に基づいて表面温度の低下量を推定する表面温度低下量推定手段を設け、変速時において推定された表面温度を推定された低下量で低下させる表面温度低下手段を設け、低下させた表面温度が設定された温度になるまでは同じ摩擦係合要素を用いた変速を行わないように規制する変速規制手段を設けたことを特徴とする。 【選択図】図1

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Cited By (14)

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    JP-2008101705-AMay 01, 2008Honda Motor Co Ltd, 本田技研工業株式会社自動変速機の変速制御装置
    JP-2009079713-AApril 16, 2009Jatco Ltd, ジヤトコ株式会社自動変速機の変速制御装置
    JP-2009079716-AApril 16, 2009Jatco Ltd, ジヤトコ株式会社自動変速機の変速制御装置
    JP-2009079717-AApril 16, 2009Jatco Ltd, ジヤトコ株式会社自動変速機の変速制御装置
    JP-2013050130-AMarch 14, 2013Aisin Ai Co Ltd, アイシン・エーアイ株式会社変速機
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