JPH0510434A - Controller for automatic transmission - Google Patents
Controller for automatic transmissionInfo
- Publication number
- JPH0510434A JPH0510434A JP3162972A JP16297291A JPH0510434A JP H0510434 A JPH0510434 A JP H0510434A JP 3162972 A JP3162972 A JP 3162972A JP 16297291 A JP16297291 A JP 16297291A JP H0510434 A JPH0510434 A JP H0510434A
- Authority
- JP
- Japan
- Prior art keywords
- throttle valve
- vehicle speed
- automatic transmission
- opening
- detecting means
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Control Of Transmission Device (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、車両用自動変速機の制
御装置に関し、特にエンジンブレーキを効果的に作動さ
せるのに好適な制御装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for an automatic transmission for a vehicle, and more particularly to a control device suitable for effectively operating an engine brake.
【０００２】[0002]
【従来の技術】車両の減速手段の一つであるエンジンブ
レーキは、車体の慣性によって回転している車輪に対
し、エンジンを負荷とすることによって車輪の回転を減
速するものである。従って、エンジンと車輪との間にあ
る変速機のギヤ比の低い方が減速効果が大きく、ギヤ比
が高い場合には十分な減速効果が得られない。2. Description of the Related Art An engine brake, which is one of vehicle deceleration means, decelerates the rotation of a wheel that is rotating due to the inertia of a vehicle body by applying a load to the engine. Therefore, the lower the gear ratio of the transmission between the engine and the wheel, the greater the deceleration effect, and when the gear ratio is high, the sufficient deceleration effect cannot be obtained.
【０００３】特開昭６０−４４６４２号公報には、オー
バードライブ機構付きの自動変速機を具えた車両におい
て、オーバードライブ位置での走行中、降坂路で意に反
した加速が行われたとき、これを検出して、オーバード
ライブを解除するようにすることによって、簡単な装置
で、減速の必要なときのみ、オーバードライブを解除し
てエンジンブレーキによる減速効果を高めるようにした
制御装置が提案されている。Japanese Unexamined Patent Publication No. 60-44642 discloses a vehicle equipped with an automatic transmission having an overdrive mechanism, when unintentional acceleration is performed on a downhill road while traveling in an overdrive position. By detecting this and releasing the overdrive, a control device has been proposed which is a simple device and releases the overdrive only when deceleration is required to enhance the deceleration effect by engine braking. ing.
【０００４】[0004]
【発明が解決しようとする課題】上述した特開昭６０−
４４６４２号公報においては、自動変速機がオーバドラ
イブ位置にある場合のみを想定しているので、その他の
場合、例えば３速，２速などの低速位置にある場合に
は、有効にエンジンブレーキを作動させることができな
い。DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In Japanese Patent No. 44642, only when the automatic transmission is in the overdrive position is assumed, so in other cases, for example, in the low speed position such as the third speed or the second speed, the engine brake is effectively operated. I can't let you do it.
【０００５】本発明は、自動変速機の当初の変速位置に
関係なく、エンジンブレーキを効果的に作動させること
のできる自動変速機の制御装置を提供することを目的と
する。An object of the present invention is to provide a control device for an automatic transmission, which can effectively actuate an engine brake regardless of the initial shift position of the automatic transmission.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
に、本発明はスロットル弁の開度を検出する手段，車速
を検出する手段および前記スロットル弁開度検出手段と
車速検出手段からの信号を受け、スロットル弁の開度が
所定の値以下で、所定時間内における車速の変換が所定
の値以上の時に自動変速機の変速点を基準変速点から高
速側へシフトさせ、前記スロットル弁の開度が所定の値
より大きく、または車速が所定の値以下になった場合に
変速点を前記基準変速点にもどす制御手段を具えたこと
を特徴とする。In order to achieve the above object, the present invention provides means for detecting the opening of a throttle valve, means for detecting a vehicle speed, and signals from the throttle valve opening detecting means and the vehicle speed detecting means. Accordingly, when the opening of the throttle valve is a predetermined value or less and the conversion of the vehicle speed within a predetermined time is a predetermined value or more, the shift point of the automatic transmission is shifted from the reference shift point to the high speed side, It is characterized by comprising control means for returning the shift point to the reference shift point when the opening is larger than a predetermined value or the vehicle speed is below a predetermined value.
【０００７】[0007]
【作用】本発明においては、運転者がアクセルペダルか
ら足を離した状態で、車両の加速度が所定の値を越えた
場合、自動変速機の変速位置に関係なく、変速比をより
低い側にシフトさせるので、エンジンブレーキを常に効
果的に作動させることができる。According to the present invention, when the driver releases his / her foot from the accelerator pedal and the acceleration of the vehicle exceeds a predetermined value, the gear ratio is set to a lower side regardless of the gear position of the automatic transmission. Since the shift is performed, the engine brake can always be effectively operated.
【０００８】[0008]
【実施例】以下に本発明を実施例によって詳細に説明す
る。EXAMPLES The present invention will be described in detail below with reference to examples.
【０００９】図１は本発明による自動変速機の制御装置
の一実施例のブロック図である。図１において、１は自
動変速機、２は車速検出手段、３はスロットル弁開度検
出手段であり、４は変速機１の制御手段である。車速検
出手段２は、例えば公知の電磁式速度計を用いることが
でき、スロットル弁開度検出手段３としては、例えば公
知の可変抵抗器などを用いることができる。制御手段４
は車速検出手段２からの信号によって車両の加速度を算
出し、得られた加速度の値とスロットル弁開度検出手段
からのスロットル弁開度信号によって、必要に応じて自
動変速機１を制御して変速点を変更し、シフト用ソレノ
イドを作動させて、ギヤ比を低ギヤ比側へシフトさせ
る。制御手段４には、例えばマイクロコンピュータが用
いられる。FIG. 1 is a block diagram of an embodiment of a control device for an automatic transmission according to the present invention. In FIG. 1, 1 is an automatic transmission, 2 is a vehicle speed detection means, 3 is a throttle valve opening detection means, and 4 is a control means for the transmission 1. The vehicle speed detecting means 2 can use, for example, a known electromagnetic speedometer, and the throttle valve opening degree detecting means 3 can use, for example, a known variable resistor. Control means 4
Calculates the acceleration of the vehicle based on the signal from the vehicle speed detecting means 2, and controls the automatic transmission 1 as necessary based on the obtained acceleration value and the throttle valve opening signal from the throttle valve opening detecting means. The shift point is changed and the shift solenoid is operated to shift the gear ratio to the low gear ratio side. For the control means 4, for example, a microcomputer is used.
【００１０】図２に制御手段４の制御手順の一例を示
す。運転者は、降坂路などで減速運転をしたい時には当
然に、アクセルペダルから足を離すことになる。所定時
間毎に起動される制御手段４はまずステップＳ１におい
て、スロットル弁開度手段３からの信号にもとづいて、
スロットル弁開度が所定の開度ＴＨを越えているか否か
を判断し、所定開度ＴＨ以下であればステップＳ２へ、
そうでなければステップＳ５へ進む。ステップＳ２にお
いて、所定時間内の車速の変化（加速度）が所定の値ｄ
Ｖ以上であるか否かを判定し、ｄＶ以上であれば車体の
慣性力がエンジンブレーキ力よりもまさっているので、
より低速段に変速すべくステップＳ３において変速点を
変更し、そうでなければステップＳ４に進む。上述のス
テップＳ１において、スロットル弁開度が所定の値ＴＨ
より大きければ、ステップＳ５において、変更された変
速点を基準変速点にもどす。また、ステップＳ２におい
て、車速の変化が所定の値ｄＶより小さい場合は上述の
如くステップＳ４に進み、このステップＳ４において車
速を所定の値ＶSPと比較する。所定車速ＶSP以下であれ
ば、最早エンジンブレーキの必要がないので、変速点を
基準変速点にもどす。FIG. 2 shows an example of the control procedure of the control means 4. When the driver wants to perform deceleration driving on a downhill road, the driver naturally releases his foot from the accelerator pedal. The control means 4, which is activated every predetermined time, first in step S1, based on the signal from the throttle valve opening means 3,
It is determined whether or not the throttle valve opening exceeds a predetermined opening TH, and if it is less than the predetermined opening TH, the process proceeds to step S2.
If not, the process proceeds to step S5. In step S2, the change in vehicle speed (acceleration) within a predetermined time is a predetermined value d.
It is determined whether or not it is V or more. If it is dV or more, the inertial force of the vehicle body is superior to the engine braking force.
The shift point is changed in step S3 so as to shift to a lower speed, and if not, the process proceeds to step S4. In step S1 described above, the throttle valve opening is set to the predetermined value TH.
If it is larger, in step S5, the changed shift point is returned to the reference shift point. If the change in vehicle speed is smaller than the predetermined value dV in step S2, the process proceeds to step S4 as described above, and the vehicle speed is compared with the predetermined value V SP in step S4. If the vehicle speed is equal to or lower than the predetermined vehicle speed V SP , engine braking is no longer required, so the shift point is returned to the reference shift point.
【００１１】図３は本発明による変速点の変更を説明す
るための自動変速線図の一例であり、ダウンシフト線の
みを示している。変速線Ａは基準変速点の自動変速線で
あり、変速線Ｂは変速点が変更された自動変速線であ
る。図２に示したように、スロットル弁の開度が所定開
度以下で、かつ車速の変化が所定の値以上の場合、図３
に示すように、変速点は高速側にシフトするので、自動
変速機のギヤ位置は低ギヤ比へシフトする。従って当初
のギヤ位置に関係なく、エンジンブレーキを効果的に作
動させることができる。FIG. 3 is an example of an automatic shift diagram for explaining the change of the shift point according to the present invention, and shows only the downshift line. Shift line A is an automatic shift line at the reference shift point, and shift line B is an automatic shift line at which the shift point is changed. As shown in FIG. 2, when the opening of the throttle valve is equal to or smaller than a predetermined opening and the change in vehicle speed is equal to or larger than a predetermined value,
As shown in, the gear shift point shifts to the high speed side, so the gear position of the automatic transmission shifts to a low gear ratio. Therefore, the engine brake can be effectively operated regardless of the initial gear position.
【００１２】エンジンブレーキが作用した後、スロット
ル弁開度が所定の値ＴＨより大きくなった場合、または
車速が所定の値ＶSP以下となった場合には、制御手段は
変速点を基準変速点にもどす。When the throttle valve opening becomes larger than a predetermined value TH or the vehicle speed becomes a predetermined value V SP or less after the engine braking is applied, the control means sets the shift point to the reference shift point. Return to.
【００１３】[0013]
【発明の効果】以上説明したように、本発明によれば、
スロットル弁の開度が所定の開度以下、かつ車速の変化
が所定の値以上の時に変速点を変化させるので、当初の
ギヤ位置に関係なくエンジンブレーキを有効に作動させ
ることができる。As described above, according to the present invention,
Since the shift point is changed when the opening of the throttle valve is equal to or smaller than the predetermined opening and the change of the vehicle speed is equal to or larger than the predetermined value, the engine brake can be effectively operated regardless of the initial gear position.
【図１】本発明の一実施例を示すブロック図である。FIG. 1 is a block diagram showing an embodiment of the present invention.
【図２】本発明における制御手順の一例を示すフローチ
ャートである。FIG. 2 is a flowchart showing an example of a control procedure in the present invention.
【図３】変速点の変更を説明する自動変速線図である。FIG. 3 is an automatic shift diagram for explaining change of shift points.
１ 自動変速機 ２ 車速検出手段 ３ スロットル弁開度検出手段 ４ 制御手段 1 Automatic Transmission 2 Vehicle Speed Detecting Means 3 Throttle Valve Opening Detecting Means 4 Control Means
Claims (1)
速を検出する手段および前記スロットル弁開度検出手段
と車速検出手段からの信号を受け、スロットル弁の開度
が所定の値以下で、所定時間内における車速の変換が所
定の値以上の時に自動変速機の変速点を基準変速点から
高速側へシフトさせ、前記スロットル弁の開度が所定の
値より大きく、または車速が所定の値以下になった場合
に変速点を前記基準変速点にもどす制御手段を具えたこ
とを特徴とする自動変速機の制御装置。Claim: What is claimed is: 1. A throttle valve opening detecting means, a vehicle speed detecting means, and a throttle valve opening detecting means for receiving signals from the throttle valve opening detecting means and the vehicle speed detecting means. When the conversion of the vehicle speed within a predetermined time is equal to or more than a predetermined value at a predetermined value or less, the shift point of the automatic transmission is shifted from the reference shift point to the high speed side, and the opening degree of the throttle valve is larger than the predetermined value. Alternatively, the control device for an automatic transmission is provided with control means for returning the shift point to the reference shift point when the vehicle speed becomes equal to or lower than a predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3162972A JPH0510434A (en) | 1991-07-03 | 1991-07-03 | Controller for automatic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3162972A JPH0510434A (en) | 1991-07-03 | 1991-07-03 | Controller for automatic transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0510434A true JPH0510434A (en) | 1993-01-19 |
Family
ID=15764782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3162972A Pending JPH0510434A (en) | 1991-07-03 | 1991-07-03 | Controller for automatic transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0510434A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8321099B2 (en) | 2008-03-13 | 2012-11-27 | Jatco Ltd | Device and method for controlling automatic gearbox |
| US8406972B2 (en) | 2008-03-06 | 2013-03-26 | Jatco Ltd | Device and method for controlling automatic transmission |
-
1991
- 1991-07-03 JP JP3162972A patent/JPH0510434A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8406972B2 (en) | 2008-03-06 | 2013-03-26 | Jatco Ltd | Device and method for controlling automatic transmission |
| US8321099B2 (en) | 2008-03-13 | 2012-11-27 | Jatco Ltd | Device and method for controlling automatic gearbox |
| JP5193283B2 (en) * | 2008-03-13 | 2013-05-08 | ジヤトコ株式会社 | Control device and control method for automatic transmission |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH03117776A (en) | Method and device for controlling automatic transmission device | |
| JPS60169330A (en) | Automatic speed change control device | |
| JP2700546B2 (en) | Control device for automatic transmission | |
| JPH0510434A (en) | Controller for automatic transmission | |
| JPH08105538A (en) | Speed change control device for automatic transmission | |
| JP3394082B2 (en) | Shift control device for automatic transmission for vehicle | |
| JP3462641B2 (en) | Retarder control device | |
| JP2003166632A (en) | Speed change control device for automatic transmission for vehicle | |
| JP2561151B2 (en) | Transmission control device for automatic transmission | |
| JP3164416B2 (en) | Engine brake control device for automatic transmission | |
| JPH023775A (en) | Automatic transmission control device for automobile | |
| JP2748543B2 (en) | Automatic transmission control system for vehicles | |
| JP3300914B2 (en) | Transmission control device for automatic transmission | |
| JP3461673B2 (en) | Shift control device for automatic transmission for vehicle | |
| KR100335949B1 (en) | Auto transmission control method for down shifting by reduction of speed | |
| JPS60113849A (en) | Speed change control system in automatic speed change device for vehicle | |
| JP2878407B2 (en) | Transmission control device for automatic transmission | |
| JPH0510438A (en) | Speed change controller for automatic transmission | |
| JPH08320069A (en) | Automatic transmission for automobile | |
| JPH01193436A (en) | Deceleration control device for automatic transmission for vehicle | |
| JP2005076764A (en) | Controller of vehicle | |
| JPH0574744B2 (en) | ||
| JPH05231522A (en) | Speed change controller | |
| JPH05180311A (en) | Transmission control device for automatic transmission | |
| JPH01279149A (en) | Device for controlling automatic transmission |