JP2005299896A - Automatic gear shift control device - Google Patents

Automatic gear shift control device Download PDF

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Publication number
JP2005299896A
JP2005299896A JP2004120984A JP2004120984A JP2005299896A JP 2005299896 A JP2005299896 A JP 2005299896A JP 2004120984 A JP2004120984 A JP 2004120984A JP 2004120984 A JP2004120984 A JP 2004120984A JP 2005299896 A JP2005299896 A JP 2005299896A
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JP
Japan
Prior art keywords
road surface
shift control
gear shift
control device
automatic gear
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Pending
Application number
JP2004120984A
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Japanese (ja)
Inventor
Hiroshi Kimura
博 木村
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Hitachi Ltd
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Hitachi Ltd
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Priority to JP2004120984A priority Critical patent/JP2005299896A/en
Publication of JP2005299896A publication Critical patent/JP2005299896A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic gear shift control device for automatically grasping a condition of a road surface to perform the optimum automatic gear shift control by using an existing system now arranged without driver's intention during driving, and to improve the stability in driving a vehicle. <P>SOLUTION: This device is constituted to determine wether a slipping state exists or not on the basis of the information from wheel speed sensors mounted on each of the wheels of the vehicle during driving to determine a road surface condition on the basis of the information, and when it is determined that the road surface condition is low μ, the information is communicated to CAN and the like or a road surface state determination signal is transmitted to an automatic gear shift control device, to perform the optimum gear shift control on the basis of the obtained information or signal. Thus the optimum automatic gear shift control can be performed by automatically determining the road surface condition which has been judged by the driver in a conventional device, by utilizing a conventional anti-skid system. Further the cost can be reduced as new connection is unnecessary only by utilizing the CAN in wire connection of the anti-skid system and the automatic gear shift control device, and further a mode switch is unnecessary. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、自動変速制御装置に係り、特に走行中の路面状態を検出する路面状態検出装置からの情報を元に、最適な変速線を自動的に選択する自動変速制御装置に関する。   The present invention relates to an automatic transmission control device, and more particularly to an automatic transmission control device that automatically selects an optimal shift line based on information from a road surface state detection device that detects a road surface state during traveling.

自動変速制御装置の装着車では、従来は特許文献１にあるように運転者が路面状態を判断し、例えば雪道ではオートモードスイッチを操作し（スイッチをＯＮ状態にし、かつ操作レバーをアップシフト用の「＋」位置へ操作してスノーモードにして、対応する変速制御を行っていた。また車輪に取付けた車輪速センサからの情報を元に、路面の状態を判断するアンチスキッドコントロールユニットによりブレーキ制御を行っていた。   In a vehicle equipped with an automatic transmission control device, the driver determines the road surface condition as in Patent Document 1, and operates an auto mode switch on a snowy road, for example (turns the switch ON and upshifts the operation lever). To the “+” position for the snow mode to perform the corresponding shift control, and by using the anti-skid control unit that judges the road surface condition based on the information from the wheel speed sensor attached to the wheel. Brake control was performed.

上記のように個々のシステムで独立して変速制御，ブレーキ制御を行っていた。   As described above, shift control and brake control were performed independently in each system.

特開２００２−２７６７８０号公報JP 2002-276780 A

上記従来技術では、運転者の判断で運転モードを切替える必要があった。自動的に運転者が意図しなくても最適な変速制御を行うシステムになっていなかった。   In the above prior art, it is necessary to switch the operation mode at the discretion of the driver. Even if the driver did not intend to do so, it was not a system for optimal gear shifting control.

本発明の目的は、運転中に運転者が意図しなくても、現在装着されているシステムを使用し、新たなシステムを導入することなく既存のブレーキ制御で使用されているシステム利用、すなわちブレーキ制御で判断している路面の状態から最適な自動変速制御を行い、車輛の走行安定性を向上させる装置を提供することにある。   It is an object of the present invention to use a system that is currently installed and used in existing brake control without introducing a new system, that is, a brake, even if the driver does not intend during driving. An object of the present invention is to provide a device that performs optimum automatic shift control from the road surface state determined by the control and improves the running stability of the vehicle.

本発明は、上記課題を以下の手段によって解決することができる。   The present invention can solve the above problems by the following means.

走行中の車輛の各車輪に取付けた車輪速センサからの情報を元に、スリップ状態かどうかを判断し、その情報から路面の状態が判断できる。   Based on the information from the wheel speed sensors attached to the wheels of the traveling vehicle, it is determined whether or not the vehicle is slipping, and the road surface state can be determined from the information.

路面の状態が低μと判断できれば、その情報をＣＡＮ等の通信あるいは、直接路面の状態を判断した信号を自動変速制御装置に送り、この入手した情報あるいは信号から最適な変速制御を行うことに特徴がある。   If it can be determined that the road surface state is low μ, the information is transmitted to the automatic transmission control device by communication such as CAN or directly the road surface state determination, and optimal shift control is performed from the obtained information or signal. There are features.

本発明によれば、従来運転者が判断していた路面状態を、従来あるアンチスキッドシステムを流用し路面状態を自動的に判断し、最適な自動変速制御が可能となる。   According to the present invention, the road surface condition that has been determined by the driver in the past can be automatically determined using the conventional anti-skid system, and optimum automatic shift control can be performed.

アンチスキッドシステムと自動変速制御装置の結線もＣＡＮを利用すれば、新たな接続も必要とせず、モード切替えスイッチも不用となることから、コストダウンを計れる効果がある。   If CAN is used for the connection between the anti-skid system and the automatic transmission control device, no new connection is required and the mode changeover switch is not required, so that the cost can be reduced.

以下、本発明の実施例を図１により説明する。図１は本発明による制御装置の一実施例である。オートマティックトランスミッションを制御する自動変速制御装置１と車輪６に取付けた車輪速センサ４とそのセンサからの信号により、走行中の路面状態を判断するアンチスキッドコントロールユニット３から構成されている。   An embodiment of the present invention will be described below with reference to FIG. FIG. 1 shows an embodiment of a control device according to the present invention. An automatic transmission control device 1 that controls the automatic transmission, a wheel speed sensor 4 attached to the wheel 6, and an anti-skid control unit 3 that determines a road surface condition during traveling based on a signal from the sensor.

従来は、走行中運転者が路面の状態を判断し、例えば雪道走行時は、モード切替スイッチ７により、スノーモードに切替え、その信号が自動変速制御装置１に入力される。この信号をもとに自動変速制御装置１は変速線を切替え、最適な変速制御を行う。この従来あったモード切替スイッチ７を運転者が切替えなくても、すでに車輛に装着されているアンチスキッドコントロールシステムを利用し、同様な制御が可能となる。その手段を以下に説明します。   Conventionally, a traveling driver determines the state of the road surface. For example, when driving on a snowy road, the mode is switched to the snow mode by the mode switch 7, and the signal is input to the automatic transmission control device 1. Based on this signal, the automatic shift control device 1 switches the shift line and performs optimum shift control. Even if the driver does not change the conventional mode change switch 7, the same control can be performed by using the anti-skid control system already mounted on the vehicle. The method is described below.

車輪６に取付けられた車輪速センサ４からの信号が、アンチスキッドコントロールユニット３に入力され、このユニットにより車輪速センサ４からの信号をもとに、路面状態を判断する。その判断により路面状態が低μ状態と判断した場合は、その信号を自動変速制御装置１に送り、自動変速制御装置１は、この信号を元に最適な変速線を選択し、その信号をオートマティックトランスミッション２に送り車輛の走行安定性を保つ制御を行う。   A signal from the wheel speed sensor 4 attached to the wheel 6 is input to the anti-skid control unit 3, and the road surface state is determined by this unit based on the signal from the wheel speed sensor 4. If it is determined that the road surface state is the low μ state, the signal is sent to the automatic transmission control device 1, and the automatic transmission control device 1 selects an optimum transmission line based on this signal, and the signal is automatically transmitted. The transmission 2 is controlled to maintain the running stability of the feed vehicle.

本発明に係わる制御装置の一実施例を示す構成図である。It is a block diagram which shows one Example of the control apparatus concerning this invention.

符号の説明Explanation of symbols

１…自動変速制御装置、２…オートマティックトランスミッション、３…アンチスキッドコントロールユニット、４…車輪速センサ、５…エンジン、６…車輪、７…モード切替スイッチ。
DESCRIPTION OF SYMBOLS 1 ... Automatic transmission control apparatus, 2 ... Automatic transmission, 3 ... Anti skid control unit, 4 ... Wheel speed sensor, 5 ... Engine, 6 ... Wheel, 7 ... Mode changeover switch

Claims (1)

エンジンで駆動する車輛において、走行中の路面の状態を検出する路面状態検出装置と検出された路面状態μから最適な変速線を選択し、車輛安定性を向上させる自動変速制御装置。
In a vehicle driven by an engine, a road surface state detection device for detecting a road surface state during traveling and an automatic transmission control device for selecting an optimum shift line from the detected road surface state μ and improving vehicle stability.
JP2004120984A 2004-04-16 2004-04-16 Automatic gear shift control device Pending JP2005299896A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004120984A JP2005299896A (en) 2004-04-16 2004-04-16 Automatic gear shift control device

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Application Number Priority Date Filing Date Title
JP2004120984A JP2005299896A (en) 2004-04-16 2004-04-16 Automatic gear shift control device

Publications (1)

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JP2005299896A true JP2005299896A (en) 2005-10-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100198469A1 (en) * 2007-07-27 2010-08-05 Zf Friedrichshafen Ag Controller for automated variable-speed transmission in a motor vehicle with all-wheel drive

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100198469A1 (en) * 2007-07-27 2010-08-05 Zf Friedrichshafen Ag Controller for automated variable-speed transmission in a motor vehicle with all-wheel drive
US8457849B2 (en) * 2007-07-27 2013-06-04 Zf Friedrichshafen Ag Controller for automated variable-speed transmission in a motor vehicle with all-wheel drive

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