PROBLEM TO BE SOLVED: To provide a vehicle speed control device and a vehicle speed control method for reducing a torque step difference when cutting fuel in a state of down-shifting an automatic transmission.SOLUTION: When fuel is to be cut while an automatic transmission is being down-shifted, the automatic transmission is previously up-shifted. In a vehicle speed control device having a vehicle speed controller that outputs an engine output command value to an engine controller and a shift ratio command value to an automatic transmission controller for making a vehicle speed detection value coincide with a vehicle speed command value, the vehicle speed controller previously outputs a shift ratio command value for up-shifting the shift ratio to a predetermined shift ratio to the automatic transmission controller when it is determined that deceleration for making the vehicle speed detection value coincide with the vehicle speed command value is insufficient only with the shift ratio of the automatic transmission, and outputs an engine output command value for a fuel cut to the engine controller when the automatic transmission has up-shifted to the predetermined shift ratio.SELECTED DRAWING: Figure 1

    【課題】自動変速機がダウンシフトされた状態で、フューエルカットを行う場合のトルク段差を小さくした車速制御装置および車速制御方法を提供する。【解決手段】自動変速機がダウンシフトされた状態で、フューエルカットを行う際に、事前に自動変速機をアップシフトさせる。車速検出値を車速指令値に一致させるために、エンジンコントローラにエンジン出力指令値を、自動変速機コントローラに変速比指令値を出力する車速コントローラを有する車速制御装置において、車速コントローラは、車速検出値を車速指令値に一致させるための減速度が、自動変速機の変速比のみでは、不足であると判定すると、事前に前記自動変速機コントローラに変速比を所定変速比までアップシフトの変速比指令値を出力するとともに、自動変速機が所定の変速比までアップシフトした時点で、前記エンジンコントローラにフューエルカットのエンジン出力指令値を出力する。【選択図】図1


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    Title :

    VEHICLE SPEED CONTROL DEVICE AND VEHICLE SPEED CONTROL METHOD


    Additional title:

    車速制御装置および車速制御方法


    Contributors:

    Publication date :

    2018-09-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    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 / F16H Getriebe , GEARING / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES



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