JPS61116160A - Method of controlling electronically controlled type automatic speed change gear for vehicle - Google Patents

Method of controlling electronically controlled type automatic speed change gear for vehicle

Info

Publication number
JPS61116160A
JPS61116160A JP23817484A JP23817484A JPS61116160A JP S61116160 A JPS61116160 A JP S61116160A JP 23817484 A JP23817484 A JP 23817484A JP 23817484 A JP23817484 A JP 23817484A JP S61116160 A JPS61116160 A JP S61116160A
Authority
JP
Japan
Prior art keywords
range
vehicle
shift lever
shift
speed
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.)
Granted
Application number
JP23817484A
Other languages
Japanese (ja)
Other versions
JPH0375786B2 (en
Inventor
Minoru Yoshida
稔 吉田
Yoichi Iwakura
洋一 岩倉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daihatsu Motor Co Ltd
Original Assignee
Daihatsu Motor Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daihatsu Motor Co Ltd filed Critical Daihatsu Motor Co Ltd
Priority to JP23817484A priority Critical patent/JPS61116160A/en
Publication of JPS61116160A publication Critical patent/JPS61116160A/en
Publication of JPH0375786B2 publication Critical patent/JPH0375786B2/ja
Granted legal-status Critical Current

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  • Control Of Transmission Device (AREA)
  • Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)

Abstract

PURPOSE:To prevent shocks upon gear shift operation, by shifting an automatic speed change gear unit to the second or third shift stage when a shift lever is shifted from the N-range to the D-range in such a condition that the rotational speed of an engine is higher than a set value while the vehicle speed is zero. CONSTITUTION:When a shift lever is at first set at the N-range position, a gear is set in a neutral condition in accordance with the instruction by the shift lever. Then a detection is made whether the vehicle speed is zero or not, and therefore, if the vehicle speed is zero, the rotational speed of the engine is detected. It the rotational speed of the engine exceeds a predetermined value, a detection is made whether the shift lever is shifted into the D-range or not. Further, when the shift lever is shifted into the D-range, a solenoid shifts the gear of an automatic speed change gear to the second shift stage to reduce creep force generated from a torque converter, thereby the vehicle is smoothly started.

Description

【発明の詳細な説明】 産業上皇且且分立 本発明は、車両用電子制御式自動変速機のシフトレバ−
をNレンジからDレンジにシフトした時、車両姿勢に急
激な変化が生じるのを防止した車両用電子制御式自動変
速機の変速制御方法に関するものである。
[Detailed Description of the Invention] The present invention relates to a shift lever of an electronically controlled automatic transmission for a vehicle.
The present invention relates to a shift control method for an electronically controlled automatic transmission for a vehicle, which prevents sudden changes in the vehicle attitude when the vehicle is shifted from the N range to the D range.

l米皇茨丘 トルクコンバータとプラネタリギヤユニットを主体とし
、かつ、電子制御によって変速動作が制御される自動変
速機は、スロットル開度を検出するスロットルポジショ
ンセンサ、連動センサ及びシフトレバ−のシフト位置を
検出するシフトポジションセンサ等からの検出信号をエ
レクトロニックコントロールユニット(以下ECUと称
す)に入力させ、この検出信号とECUに予め設定され
た変速パターンから何連のギヤを使用するかを判断する
と共に、自動変速機を制御する油圧制御回路のソレノイ
ドパルプにECUから信号を送り、自動変速機を操作し
ている。父上記形式の電子制御式自動変速機は、運転者
がシフトレバ−をNレンジからDレンジにシフトした時
、シフト時のショック、或いは車両姿勢の急激な変化を
減少させるため、例えば、車速かゼロでスロットル開度
がゼロの状態に於いて、シフトレバ−がNレンジからD
レンジにシフトされた時、自動変速機のギヤを2nd或
いは3rdにシフトし、この状態で軍が発進すると通常
制御に移行するようにした機構を付加したものがある。
The automatic transmission, which is mainly composed of a U.S. Ko Ibaragaa torque converter and a planetary gear unit, and whose shift operation is controlled by electronic control, uses a throttle position sensor that detects the throttle opening, an interlock sensor, and a shift lever that detects the shift position. A detection signal from a shift position sensor, etc. is input to an electronic control unit (hereinafter referred to as ECU), which determines how many gears to use based on this detection signal and a shift pattern preset in the ECU. The automatic transmission is operated by sending signals from the ECU to the solenoid pulp in the hydraulic control circuit that controls the transmission. The electronically controlled automatic transmission of the above type is designed to reduce shocks during shifting or sudden changes in vehicle attitude when the driver shifts the shift lever from N range to D range. When the throttle opening is zero, the shift lever changes from N range to D.
Some have a mechanism that shifts the automatic transmission gear to 2nd or 3rd when the range is shifted, and then shifts to normal control when the military starts in this state.

尚、上記した機構を付加したものとしては、例えば、特
開昭58−160658号公報に開示された車両用電子
制御式自動変速機の変速制御方法がある。
An example of a method to which the above-mentioned mechanism is added is a shift control method for an electronically controlled automatic transmission for a vehicle disclosed in Japanese Patent Application Laid-open No. 58-160658.

が ” しよ°  る” 占 上記した機構を付加した自動変速機は、車速かゼロでス
ロットル開度がゼロの状態の時、シフトレバ−がNレン
ジからDレンジにシフトされると、必ず自動変速機のギ
ヤを2nd或いは3rdに一旦シフトする。しかし、シ
フト時にショックが生じたり、又車両姿勢に急激な変化
が生じるのは、通常オートチッーク等が作動し、アイド
リング回転数が上昇している場合であり、アイドリング
回転数が上昇していない時、ギヤを一旦2ndか3rd
にシフトした後、通常制御に移行させると、発進加速の
低下を来し、円滑な発進が行われないといった問題があ
った。
An automatic transmission equipped with the mechanism described above will automatically shift when the shift lever is shifted from the N range to the D range when the vehicle speed is zero and the throttle opening is zero. Shift the gear of the machine to 2nd or 3rd. However, when a shock occurs during a shift or a sudden change in vehicle posture occurs, it is usually when the auto check is activated and the idling speed is rising; when the idling speed is not rising, Change the gear to 2nd or 3rd
When the vehicle is shifted to normal control after being shifted to normal control, there is a problem in that the starting acceleration decreases and smooth starting is not performed.

又、上記機構は、車速かゼロでスロットル開度がゼロの
時にのみ働くものであり、車速かゼロであっても、スロ
ットルを開けた状態でシフトレバ−をNレンジからDレ
ンジにシフトした時には、上記機構は作動しないといっ
た問題もあった・ ′ るための シフトレバ−のシフト位置、車速、スロットル開度等の
諸条件が入力されるECUによって制御されるソレノイ
ドバルブにより、トルクコンバータとプラネタリギヤユ
ニットを主体としてなる自動変速機を変速制御する車両
用電子制御式自動変速機の変速制御方法に於いて、車速
かゼロで、エンジン回転数が設定回転数より高い状態に
於いて、シフトレバ−がNレンジから走行レンジにシフ
トされた時、上記自動変速機を2nd或いは3rdにシ
フトし、その後、車速か設定速度以上に達するか、或い
はシフトレバ−がDレンジ又はNレンジ以外のポジショ
ンにシフトされると、通常制御に移行するようにしたも
のである。
Furthermore, the above mechanism works only when the vehicle speed is zero and the throttle opening is zero, so even if the vehicle speed is zero, when the shift lever is shifted from the N range to the D range with the throttle open, There was also a problem that the above mechanism did not operate.' The torque converter and planetary gear unit are mainly controlled by solenoid valves controlled by the ECU, which inputs various conditions such as the shift position of the shift lever, vehicle speed, and throttle opening. In the speed change control method of an electronically controlled automatic transmission for a vehicle, when the vehicle speed is zero and the engine speed is higher than the set speed, the shift lever is moved from the N range. When the automatic transmission is shifted to the driving range, the automatic transmission is shifted to 2nd or 3rd, and then when the vehicle speed reaches the set speed or higher, or the shift lever is shifted to a position other than the D range or N range, normally The system is designed to shift to control.

皿 車速かゼロで、エンジン回転数が設定回転数より高い状
態に於いて、シフトレバ−がNレンジからDレンジにシ
フトされた時、自動変速機を2nd或いは3rdにシフ
トすることにより、シフト時にショックが生じたり、或
いは車両姿勢に急激な変化が生じる場合にのみ、この現
象を低減させるものである。
When the shift lever is shifted from the N range to the D range when the vehicle speed is zero or the engine speed is higher than the set speed, the automatic transmission is shifted to 2nd or 3rd to prevent shock during the shift. This phenomenon is only reduced when this occurs or when there is a sudden change in the vehicle attitude.

1皿週 本発明は、通常の変速制御を行う電子制御式自動変速機
に、NレンジからDレンジへのシフト時、シフトショッ
クが生じたり、或いは車両姿勢に急激な変化が生じる場
合にのみ、この現象を低減させるようにした制御方法を
新たに設定したものであり、以下本発明の制御方法を第
1図に示すフローチャートに従って説明する。
1 Dish Week The present invention provides an electronically controlled automatic transmission that performs normal speed change control only when a shift shock occurs when shifting from the N range to the D range, or when a sudden change in the vehicle attitude occurs. A new control method has been established to reduce this phenomenon, and the control method of the present invention will be explained below with reference to the flowchart shown in FIG.

本発明に係る制御方法では、先ずステップ1にてシフト
レバ−がNレンジに位置するか否かの検出を行い、シフ
トレバ−がNレンジのポジションに位置する時には、ス
テップ2でシフトレバ−からの指示通り、ソレノイドに
よりギヤをニュートラル状態にする0次にステップ3で
現在の車速かゼロか否かの検出を行い、車速かゼロでな
い時には通常の制御を行う。又、車速かゼロの時には、
ステップ4に進んで現在のエンジン回転数を検出し、エ
ンジン回転数が設定値(例えば200αrpm )以下
の時には通常の制御を行う。又、エンジン回転数が設定
値以上の時には、ステップ5でシフトレバ−がDレンジ
にシフトされたか否かの検出を行い、Dレンジにシフト
されていない時には、ステップ3に戻って再度車速の検
出を行う。又、シフトレバ−がDレンジにシフトされた
時、即ち車両姿勢に急激な変化が起こる危険性が生じた
時には、ステップ6でソレノイドにより自動変速機のギ
ヤを2ndにシフトし、トルクコンバータから発生する
クリープ力を屯めることにより、車両を緩やかに発進さ
せる。このようにして自動変速機のギヤが2ndにシフ
トされると、次にステップ7で車速の検出を行い、車速
か設定速度(例えばLOKm/h)以上に達した時には
、通常の制御へと移行する。又車速か設定速度に達して
いない場合には、ステップ8でシフトレバ−がDレンジ
のままか否かの検出を行い、Dレンジのままの時には、
ステップ9で2ndギヤをキープした後、ステップ7へ
戻って速度検出を行う。又ステップ8でシフトレバ−が
Dレンジ以外のポジションに移動した時には、ステップ
1に戻ってシフトレバ−がNレンジに位置するか否かの
検出を行う。
In the control method according to the present invention, first in step 1 it is detected whether or not the shift lever is located in the N range, and when the shift lever is located in the N range position, in step 2 Then, in step 3, it is detected whether the current vehicle speed is zero or not, and if the vehicle speed is not zero, normal control is performed. Also, when the vehicle speed is zero,
Proceeding to step 4, the current engine speed is detected, and when the engine speed is below a set value (for example, 200.alpha.rpm), normal control is performed. When the engine speed is higher than the set value, it is detected in step 5 whether the shift lever has been shifted to the D range, and if the shift lever has not been shifted to the D range, the process returns to step 3 and the vehicle speed is detected again. conduct. Also, when the shift lever is shifted to the D range, that is, when there is a risk of a sudden change in the vehicle attitude, the solenoid shifts the gear of the automatic transmission to 2nd in step 6, and torque is generated from the converter. By increasing the creep force, the vehicle is started slowly. When the gear of the automatic transmission is shifted to 2nd in this way, the vehicle speed is then detected in step 7, and when the vehicle speed reaches the set speed (for example, LOKm/h) or higher, the control shifts to normal control. do. If the vehicle speed has not reached the set speed, it is detected in step 8 whether or not the shift lever remains in the D range.If the shift lever remains in the D range,
After keeping the 2nd gear in step 9, the process returns to step 7 and speed detection is performed. When the shift lever moves to a position other than the D range in step 8, the process returns to step 1 to detect whether the shift lever is in the N range.

尚、上記実施例は、車速かゼロで、かつ、エンジンの回
転数が設定回転数以上の状態に於いて、シフトレバ−を
NレンジからDレンジンにシトフした時、自動変速機の
ギヤを2ndにシフトする例について説明したが、この
時ギヤを3rdにシフトするように制御してもよい。
In the above embodiment, when the shift lever is shifted from the N range to the D range when the vehicle speed is zero and the engine speed is higher than the set speed, the automatic transmission is shifted to 2nd gear. Although an example of shifting has been described, the gear may be controlled to be shifted to 3rd at this time.

第2図は、上記した制御方法により車両の発進を制御す
る時の具体的回路構成を示すブロック図である。図中(
21)はECU、(22)はECU(21)によって上
記制御を行うのに必要な各種データを検出するためのセ
ンサ群であり、このセンサ群(22)は、エンジンの回
転数を検出する回転数センサ(22a)、シフトレバ−
のシフトポジションを検出するシフトポジシロンセンサ
(22b ’I及び車速を検出する車速センサ(22e
 ’)によって構成されている。  (23)は自動変
速機を制御する油圧制御回路、(23a )は油圧II
I′m回路(23)のソレノイドパルプである。
FIG. 2 is a block diagram showing a specific circuit configuration when controlling the start of the vehicle using the above-described control method. In the figure (
21) is an ECU, and (22) is a sensor group for detecting various data necessary for performing the above control by the ECU (21). Number sensor (22a), shift lever
A shift position sensor (22b'I) that detects the shift position of the vehicle and a vehicle speed sensor (22e
'). (23) is a hydraulic control circuit that controls the automatic transmission, (23a) is a hydraulic II
This is the solenoid pulp of the I'm circuit (23).

上記構成に於いて、回転数センサ(22a)、シフトポ
ジションセンサ(22b ’)及び車速センサ(22c
)から出力する信号を元にして、ECU (21)内で
上述した信号処理を行い、油圧制御回路(23)のソレ
ノイドパルプ(23a)を制御し、車両発進時の変速制
御を行う。
In the above configuration, a rotation speed sensor (22a), a shift position sensor (22b') and a vehicle speed sensor (22c
) The ECU (21) performs the above-mentioned signal processing based on the signal output from the ECU (21), controls the solenoid pulp (23a) of the hydraulic control circuit (23), and performs speed change control when the vehicle starts.

発ユ坐班果 上記した如く、本発明に係る制御方法は、車速かゼロで
、エンジン回転数が設定回転数より高い状態に於いて、
シフトレバ−がNレンジからDレンジにシフトされた時
、自動変速機を2nd或いは3rdにシフトすることに
より、シフト時にショックが生じたり、或いは車両姿勢
に急激な変化が生じる場合にのみ、この現象を低減させ
るようにし、エンジン回転数が該定回転数より低い時に
は通常の制御を行うようにしたから、発進加速が低下す
ることはない。
As mentioned above, in the control method according to the present invention, when the vehicle speed is zero and the engine rotation speed is higher than the set rotation speed,
When the shift lever is shifted from the N range to the D range, shifting the automatic transmission to 2nd or 3rd will cause a shock during the shift or a sudden change in the vehicle attitude. Since the engine speed is reduced and normal control is performed when the engine speed is lower than the constant speed, the starting acceleration does not decrease.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明に係る車両用電子制御式自動変速機の変
速制御方法を示すフローチャート、第2図は具体的回路
構成を示すブロック図である。 (21) −E CU (エレクトロニックコントロー
ルユニット)、(22) −センサ群、(22a )・
・−回転数センサ、(22b )−・−シフトポジショ
ンセンサ、(22c)・−・車速センサ、(23) −
・油圧制御回路、(23a ) −・ソレノイドパルプ
FIG. 1 is a flowchart showing a speed change control method for an electronically controlled automatic transmission for a vehicle according to the present invention, and FIG. 2 is a block diagram showing a specific circuit configuration. (21) -E CU (electronic control unit), (22) -sensor group, (22a).
・-Rotational speed sensor, (22b)--Shift position sensor, (22c)--Vehicle speed sensor, (23)-
- Hydraulic control circuit, (23a) - Solenoid pulp.

Claims (1)

【特許請求の範囲】[Claims] (1)シフトレバーのシフト位置、車速、スロットル開
度等の諸条件が入力されるエレクトロニックコントロー
ルユニットによって制御されるソレノイドバルブにより
、トルクコンバータとプラネタリギヤユニットを主体と
してなる自動変速機を変速制御する車両用電子制御式自
動変速機の変速制御方法に於いて、車速がゼロで、エン
ジン回転数が設定回転数より高い状態に於いて、シフト
レバーがNレンジからDレンジにシフトされた時、上記
自動変速機を2nd或いは3rdにシフトし、その後、
車速が設定速度以上に達するか、或いはシフトレバーが
Dレンジ又はNレンジ以外のポジションにシフトされる
と、通常制御に移行するようにしたことを特徴とする車
両用電子制御式自動変速機の変速制御
(1) A vehicle that controls the automatic transmission, which mainly consists of a torque converter and a planetary gear unit, by a solenoid valve controlled by an electronic control unit into which various conditions such as the shift position of the shift lever, vehicle speed, and throttle opening are input. In the speed change control method of an electronically controlled automatic transmission for Shift the transmission to 2nd or 3rd, then
Shifting of an electronically controlled automatic transmission for a vehicle characterized by shifting to normal control when the vehicle speed reaches a set speed or higher or when the shift lever is shifted to a position other than D range or N range. control
JP23817484A 1984-11-12 1984-11-12 Method of controlling electronically controlled type automatic speed change gear for vehicle Granted JPS61116160A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23817484A JPS61116160A (en) 1984-11-12 1984-11-12 Method of controlling electronically controlled type automatic speed change gear for vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23817484A JPS61116160A (en) 1984-11-12 1984-11-12 Method of controlling electronically controlled type automatic speed change gear for vehicle

Publications (2)

Publication Number Publication Date
JPS61116160A true JPS61116160A (en) 1986-06-03
JPH0375786B2 JPH0375786B2 (en) 1991-12-03

Family

ID=17026274

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23817484A Granted JPS61116160A (en) 1984-11-12 1984-11-12 Method of controlling electronically controlled type automatic speed change gear for vehicle

Country Status (1)

Country Link
JP (1) JPS61116160A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62255646A (en) * 1986-04-26 1987-11-07 Toyota Motor Corp Controller for automatic transmission
JPS63303251A (en) * 1987-06-04 1988-12-09 Toyota Motor Corp Control method for automatic transmission
US4984485A (en) * 1988-07-08 1991-01-15 Toyota Jidosha Kabushiki Kaisha Apparatus and method for controlling automatic transmission for motor vehicle, with anti-squat shifting arrangement

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5635858A (en) * 1979-09-01 1981-04-08 Aisin Warner Ltd Lock up control method of torque converter on vehicle
JPS58160658A (en) * 1982-03-17 1983-09-24 Toyota Motor Corp Method of controlling speed shifting operation of electronically-controlled automatic transmission for vehicle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5635858A (en) * 1979-09-01 1981-04-08 Aisin Warner Ltd Lock up control method of torque converter on vehicle
JPS58160658A (en) * 1982-03-17 1983-09-24 Toyota Motor Corp Method of controlling speed shifting operation of electronically-controlled automatic transmission for vehicle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62255646A (en) * 1986-04-26 1987-11-07 Toyota Motor Corp Controller for automatic transmission
JPS63303251A (en) * 1987-06-04 1988-12-09 Toyota Motor Corp Control method for automatic transmission
US4984485A (en) * 1988-07-08 1991-01-15 Toyota Jidosha Kabushiki Kaisha Apparatus and method for controlling automatic transmission for motor vehicle, with anti-squat shifting arrangement

Also Published As

Publication number Publication date
JPH0375786B2 (en) 1991-12-03

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