JPS6487953A - Hydraulic speed change control device for automatic transmission - Google Patents

Hydraulic speed change control device for automatic transmission

Info

Publication number
JPS6487953A
JPS6487953A JP24627887A JP24627887A JPS6487953A JP S6487953 A JPS6487953 A JP S6487953A JP 24627887 A JP24627887 A JP 24627887A JP 24627887 A JP24627887 A JP 24627887A JP S6487953 A JPS6487953 A JP S6487953A
Authority
JP
Japan
Prior art keywords
speed change
low
speed
solenoid valve
oil
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
JP24627887A
Other languages
Japanese (ja)
Other versions
JP2799453B2 (en
Inventor
Hiroaki Maeda
Takahiro Midori
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.)
Aisin Corp
Original Assignee
Aisin Seiki 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 Aisin Seiki Co Ltd filed Critical Aisin Seiki Co Ltd
Priority to JP24627887A priority Critical patent/JP2799453B2/en
Publication of JPS6487953A publication Critical patent/JPS6487953A/en
Application granted granted Critical
Publication of JP2799453B2 publication Critical patent/JP2799453B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Control Of Transmission Device (AREA)

Abstract

PURPOSE:To prevent oil from deteriorating improved in its cooling quality for the inside of an automatic transmission by controlling a solenoid valve in a maximum speed shift and stopping the reduction of output pressure of a regulator valve following a change of throttle opening. CONSTITUTION:In a predetermined range, when a throttle opening is in a predetermined value or less further with a car speed in a maximum speed shift, an electronic control unit 28, being based on signals from a throttle opening sensor 30, car speed sensor 32 and a select range detecting sensor 34, inoperatively controls a solenoid valve 11, stopping a decrease of output pressure and maintaining an output of a regulator valve 4 to a fixed high pressure. While in a low throttle region, when a speed change is performed from a low speed shift to the maximum speed shift, opening the solenoid valve 11 for the fixed time before ending the speed change, an output pressure of oil of the regulator valve 4 is set to a low pressure of oil. In this way, the improvement of cooling quality in the low throttle region and the reduction of speed change shock can be promoted.
JP24627887A 1987-09-30 1987-09-30 Transmission hydraulic control unit for automatic transmission Expired - Fee Related JP2799453B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24627887A JP2799453B2 (en) 1987-09-30 1987-09-30 Transmission hydraulic control unit for automatic transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24627887A JP2799453B2 (en) 1987-09-30 1987-09-30 Transmission hydraulic control unit for automatic transmission

Publications (2)

Publication Number Publication Date
JPS6487953A true JPS6487953A (en) 1989-04-03
JP2799453B2 JP2799453B2 (en) 1998-09-17

Family

ID=17146159

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24627887A Expired - Fee Related JP2799453B2 (en) 1987-09-30 1987-09-30 Transmission hydraulic control unit for automatic transmission

Country Status (1)

Country Link
JP (1) JP2799453B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5124923A (en) * 1989-11-08 1992-06-23 Aisin Seiki Kabushiki Kaisha Retarding apparatus for automotive vehicles
US5357444A (en) * 1990-02-28 1994-10-18 Aisin Seiki Kabushiki Kaisha Retarding control apparatus which operates on the basis of signals such as a shift lever position signal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5124923A (en) * 1989-11-08 1992-06-23 Aisin Seiki Kabushiki Kaisha Retarding apparatus for automotive vehicles
US5357444A (en) * 1990-02-28 1994-10-18 Aisin Seiki Kabushiki Kaisha Retarding control apparatus which operates on the basis of signals such as a shift lever position signal
US5400251A (en) * 1990-02-28 1995-03-21 Aisin Seiki Kabushiki Kaisha Retarding control apparatus

Also Published As

Publication number Publication date
JP2799453B2 (en) 1998-09-17

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees