JPWO2021106774A5 - - Google Patents
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- JPWO2021106774A5 JPWO2021106774A5 JP2021561376A JP2021561376A JPWO2021106774A5 JP WO2021106774 A5 JPWO2021106774 A5 JP WO2021106774A5 JP 2021561376 A JP2021561376 A JP 2021561376A JP 2021561376 A JP2021561376 A JP 2021561376A JP WO2021106774 A5 JPWO2021106774 A5 JP WO2021106774A5
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- fluid pressure
- brake fluid
- pressure sensor
- sensor value
- determination
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- 239000012530 fluid Substances 0.000 claims description 28
- 230000005540 biological transmission Effects 0.000 claims description 22
- 230000005856 abnormality Effects 0.000 claims description 14
- 230000002159 abnormal effect Effects 0.000 claims description 6
- 238000012790 confirmation Methods 0.000 claims description 6
- 230000001133 acceleration Effects 0.000 claims 3
- 230000007935 neutral effect Effects 0.000 claims 2
- 230000007704 transition Effects 0.000 claims 2
- 238000000034 method Methods 0.000 claims 1
Description
上記目的を達成するため、本発明のある態様に係る自動変速機の制御装置は、有段変速機構に有する複数の摩擦要素のそれぞれに設けられた変速系ソレノイドを制御し、複数の摩擦要素の締結状態を変更することにより複数のギヤ段を切替える変速制御を行う変速機コントロールユニットを備える。
変速機コントロールユニットは、所定ギヤ段による走行中、実ギヤ比が設定ギヤ比から乖離するギヤ比異常条件と、ブレーキ非操作のときに車両減速度が所定値以上になる減速度条件とが所定時間継続して成立すると、有段変速機構がインターロック状態であると判定するインターロック判定を行うインターロック判定部と、ブレーキ非操作を検出するブレーキ液圧センサ値を入力し、車両の加減速挙動とブレーキ液圧センサ値の対応関係が整合しない場合、ブレーキ液圧センサ値が異常と判定するブレーキ液圧センサ値異常判定部とを有する。
ブレーキ液圧センサ値異常判定部は、車両が加速側挙動であるときブレーキ液圧センサ値が第１閾値以下であるとハイ側正常判定フラグを立て、車両が減速側挙動であるときブレーキ液圧センサ値が第２閾値以上であるとロー側正常判定フラグを立て、
ハイ側正常判定フラグとロー側正常判定フラグが共に立っていると正常判定成立とし、ブレーキ液圧センサ値の正常判定確定フラグを立て、
ハイ側正常判定フラグとロー側正常判定フラグの少なくとも一方のフラグが立っていないと異常判定成立とし、正常判定確定フラグを降ろす。
インターロック判定部は、ブレーキ液圧センサ値異常判定部によりブレーキ液圧センサ値が異常と判定されるとインターロック判定を許可しない。
In order to achieve the above object, the control device of the automatic transmission according to an aspect of the present invention controls the transmission system solenoid provided for each of the plurality of friction elements included in the stepped speed change mechanism, and controls the transmission system solenoids of the plurality of friction elements. It is equipped with a transmission control unit that performs shift control for switching a plurality of gear stages by changing the engaged state.
The transmission control unit is defined by a gear ratio abnormality condition in which the actual gear ratio deviates from the set gear ratio while traveling in a predetermined gear stage, and a deceleration condition in which the vehicle deceleration becomes a predetermined value or more when the brake is not operated. When the time is continuously established, the interlock judgment unit that determines the interlock state that the stepped speed change mechanism is in the interlock state and the brake hydraulic pressure sensor value that detects the non-operation of the brake are input to accelerate or decelerate the vehicle. It has a brake hydraulic pressure sensor value abnormality determination unit for determining that the brake hydraulic pressure sensor value is abnormal when the correspondence between the behavior and the brake hydraulic pressure sensor value does not match.
The brake fluid pressure sensor value abnormality determination unit sets a high side normal judgment flag when the brake fluid pressure sensor value is equal to or less than the first threshold when the vehicle is accelerating side behavior, and the brake fluid pressure when the vehicle is decelerating side behavior. If the sensor value is equal to or higher than the second threshold value, the low side normal judgment flag is set and the sensor value is set.
If the high side normal judgment flag and the low side normal judgment flag stand together, the normal judgment is established, and the normal judgment confirmation flag of the brake fluid pressure sensor value is set.
If at least one of the high side normal judgment flag and the low side normal judgment flag is not set, the abnormality judgment is established and the normal judgment confirmation flag is lowered.
The interlock determination unit does not allow the interlock determination when the brake fluid pressure sensor value abnormality determination unit determines that the brake fluid pressure sensor value is abnormal.
Claims (5)
前記変速機コントロールユニットは、
所定ギヤ段による走行中、実ギヤ比が設定ギヤ比から乖離するギヤ比異常条件と、ブレーキ非操作のときに車両減速度が所定値以上になる減速度条件とが所定時間継続して成立すると、前記有段変速機構がインターロック状態であると判定するインターロック判定を行うインターロック判定部と、
前記ブレーキ非操作を検出するブレーキ液圧センサ値を入力し、車両の加減速挙動と前記ブレーキ液圧センサ値の対応関係が整合しない場合、前記ブレーキ液圧センサ値が異常と判定するブレーキ液圧センサ値異常判定部と、
を有し、
前記ブレーキ液圧センサ値異常判定部は、車両が加速側挙動であるとき前記ブレーキ液圧センサ値が第１閾値以下であるとハイ側正常判定フラグを立て、車両が減速側挙動であるとき前記ブレーキ液圧センサ値が第２閾値以上であるとロー側正常判定フラグを立て、
前記ハイ側正常判定フラグと前記ロー側正常判定フラグが共に立っていると正常判定成立とし、前記ブレーキ液圧センサ値の正常判定確定フラグを立て、
前記ハイ側正常判定フラグと前記ロー側正常判定フラグの少なくとも一方のフラグが立っていないと異常判定成立とし、前記正常判定確定フラグを降ろし、
前記インターロック判定部は、前記ブレーキ液圧センサ値異常判定部により前記ブレーキ液圧センサ値が異常と判定されると前記インターロック判定を許可しない
自動変速機の制御装置。 A transmission control unit that controls a speed change system solenoid provided for each of a plurality of friction elements included in a stepped speed change mechanism and controls a speed change to switch a plurality of gear stages by changing the fastening state of the plurality of friction elements. It is a control device of an automatic transmission equipped with
The transmission control unit is
When the gear ratio abnormality condition in which the actual gear ratio deviates from the set gear ratio while traveling in the predetermined gear stage and the deceleration condition in which the vehicle deceleration becomes equal to or higher than the predetermined value when the brake is not operated are continuously satisfied for a predetermined time. , An interlock determination unit that performs an interlock determination to determine that the stepped speed change mechanism is in an interlock state,
The brake fluid pressure that detects the non-operation of the brake is input, and if the correspondence between the acceleration / deceleration behavior of the vehicle and the brake fluid pressure sensor value does not match, the brake fluid pressure that determines that the brake fluid pressure sensor value is abnormal is determined. Sensor value abnormality judgment unit and
Have,
The brake fluid pressure sensor value abnormality determination unit sets a high-side normal determination flag when the brake fluid pressure sensor value is equal to or less than the first threshold value when the vehicle is accelerating, and the brake fluid pressure sensor value abnormality determination unit sets the high-side normality determination flag when the vehicle is decelerating. If the brake fluid pressure sensor value is equal to or higher than the second threshold value, the low side normality judgment flag is set and the brake fluid pressure sensor value is set.
When the high-side normality determination flag and the low-side normality determination flag are both set, the normality determination is established, and the normality determination confirmation flag of the brake fluid pressure sensor value is set.
If at least one of the high-side normality determination flag and the low-side normality determination flag is not set, the abnormality determination is established, and the normality determination confirmation flag is lowered.
The interlock determination unit is a control device for an automatic transmission that does not allow the interlock determination when the brake fluid pressure sensor value is determined to be abnormal by the brake fluid pressure sensor value abnormality determination unit.
前記インターロック判定部は、前記ブレーキ液圧センサ値異常判定部により前記ブレーキ液圧センサ値が正常と判定されると前記インターロック判定を許可し、前記ブレーキ非操作を前記ブレーキ液圧センサ値が所定値以下であることにより検出する
自動変速機の制御装置。 In the control device for the automatic transmission according to claim 1,
The interlock determination unit permits the interlock determination when the brake fluid pressure sensor value is determined to be normal by the brake fluid pressure sensor value abnormality determination unit, and the brake non-operation is performed by the brake fluid pressure sensor value. An automatic transmission control device that detects when is less than or equal to a predetermined value.
前記変速機コントロールユニットは、前記インターロック判定後に退避ギヤ段に固定することで車両走行を確保するリンプホーム制御部を有し、
前記リンプホーム制御部は、前記インターロック判定部により前記有段変速機構がインターロック状態を判定すると、複数の摩擦要素を全て解放する解放指示を出力し、
前記解放指示の出力によりニュートラル状態への移行が確認されると、複数の摩擦要素のうち特定の摩擦要素の締結・解放の判定情報に基づいて前記退避ギヤ段を決定し、
前記ニュートラル状態への移行から決定した前記退避ギヤ段へ変速した後、前記退避ギヤ段に固定する
自動変速機の制御装置。 In the control device for the automatic transmission according to claim 1 or 2 .
The transmission control unit has a limp home control unit that secures vehicle running by fixing to the evacuation gear stage after the interlock determination.
When the stepped speed change mechanism determines the interlock state by the interlock determination unit, the limp home control unit outputs a release instruction to release all the plurality of friction elements.
When the transition to the neutral state is confirmed by the output of the release instruction, the evacuation gear stage is determined based on the determination information of fastening / releasing a specific friction element among the plurality of friction elements.
A control device for an automatic transmission that is fixed to the evacuation gear stage after shifting to the evacuation gear stage determined from the transition to the neutral state.
前記変速機コントロールユニットは、前記摩擦要素の締結状態を維持するインギヤ中、クラッチ滑りを抑えることができる入力トルク相当の中間圧指令を前記変速系ソレノイドへ出力する変速系ソレノイド制御部を有する
自動変速機の制御装置。 In the control device for an automatic transmission according to any one of claims 1 to 3 .
The transmission control unit has an automatic transmission having a transmission system solenoid control unit that outputs an intermediate pressure command corresponding to an input torque that can suppress clutch slippage to the transmission system solenoid during in-gear that maintains the engaged state of the friction element. Machine control device.
所定ギヤ段による走行中、実ギヤ比が設定ギヤ比から乖離するギヤ比異常条件と、ブレーキ非操作のときに車両減速度が所定値以上になる減速度条件とが所定時間継続して成立すると、前記有段変速機構がインターロック状態であると判定するインターロック判定を行い、
前記ブレーキ非操作を検出するブレーキ液圧センサ値を入力し、車両の加減速挙動と前記ブレーキ液圧センサ値の対応関係が整合しない場合、前記ブレーキ液圧センサ値が異常と判定し、
車両が加速側挙動であるとき前記ブレーキ液圧センサ値が第１閾値以下であるとハイ側正常判定フラグを立て、車両が減速側挙動であるとき前記ブレーキ液圧センサ値が第２閾値以上であるとロー側正常判定フラグを立て、
前記ハイ側正常判定フラグと前記ロー側正常判定フラグが共に立っていると正常判定成立とし、前記ブレーキ液圧センサ値の正常判定確定フラグを立て、
前記ハイ側正常判定フラグと前記ロー側正常判定フラグの少なくとも一方のフラグが立っていないと異常判定成立とし、前記正常判定確定フラグを降ろし、
前記ブレーキ液圧センサ値が異常と判定されると前記インターロック判定を許可しない、
自動変速機の制御方法。 A transmission control unit that controls a speed change system solenoid provided for each of a plurality of friction elements included in a stepped speed change mechanism and controls a speed change to switch a plurality of gear stages by changing the fastening state of the plurality of friction elements. It is a control method of an automatic transmission equipped with
When the gear ratio abnormality condition in which the actual gear ratio deviates from the set gear ratio while traveling in the predetermined gear stage and the deceleration condition in which the vehicle deceleration becomes equal to or higher than the predetermined value when the brake is not operated are continuously satisfied for a predetermined time. , The interlock determination for determining that the stepped speed change mechanism is in the interlock state is performed, and the interlock determination is performed.
When the brake fluid pressure sensor value for detecting the non-operation of the brake is input and the correspondence between the acceleration / deceleration behavior of the vehicle and the brake fluid pressure sensor value does not match, it is determined that the brake fluid pressure sensor value is abnormal.
When the vehicle is in the acceleration side behavior, the high side normality determination flag is set when the brake fluid pressure sensor value is equal to or less than the first threshold value, and when the vehicle is in the deceleration side behavior, the brake fluid pressure sensor value is equal to or higher than the second threshold value. If there is, set the low side normal judgment flag,
When the high-side normality determination flag and the low-side normality determination flag are both set, the normality determination is established, and the normality determination confirmation flag of the brake fluid pressure sensor value is set.
If at least one of the high-side normality determination flag and the low-side normality determination flag is not set, the abnormality determination is established, and the normality determination confirmation flag is lowered.
If the brake fluid pressure sensor value is determined to be abnormal, the interlock determination is not permitted.
How to control an automatic transmission.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019216988 | 2019-11-29 | ||
| JP2019216988 | 2019-11-29 | ||
| PCT/JP2020/043351 WO2021106774A1 (en) | 2019-11-29 | 2020-11-20 | Automatic transmission control device and control method |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JPWO2021106774A1 JPWO2021106774A1 (en) | 2021-06-03 |
| JPWO2021106774A5 true JPWO2021106774A5 (en) | 2022-05-19 |
| JP7300004B2 JP7300004B2 (en) | 2023-06-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2021561376A Active JP7300004B2 (en) | 2019-11-29 | 2020-11-20 | AUTOMATIC TRANSMISSION CONTROL DEVICE AND CONTROL METHOD |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7300004B2 (en) |
| WO (1) | WO2021106774A1 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003160046A (en) | 2001-11-22 | 2003-06-03 | Nissan Motor Co Ltd | Abnormality determination device of brake hydraulic pressure detection device |
| JP4178891B2 (en) | 2002-09-05 | 2008-11-12 | 株式会社デンソー | Vehicle driving force control method and driving force control apparatus using the method |
| JP4418477B2 (en) | 2007-03-22 | 2010-02-17 | ジヤトコ株式会社 | Automatic transmission |
| WO2017022771A1 (en) | 2015-08-04 | 2017-02-09 | ジヤトコ株式会社 | Control device for automatic transmission and control method for automatic transmission |
| US11059475B2 (en) | 2017-08-10 | 2021-07-13 | Jatco Ltd | Interlock determination device and determination method for automatic transmission |
-
2020
- 2020-11-20 WO PCT/JP2020/043351 patent/WO2021106774A1/en active Application Filing
- 2020-11-20 JP JP2021561376A patent/JP7300004B2/en active Active
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