JPH02150557A - Electronically controlled automatic transmission - Google Patents

Electronically controlled automatic transmission

Info

Publication number
JPH02150557A
JPH02150557A JP63303397A JP30339788A JPH02150557A JP H02150557 A JPH02150557 A JP H02150557A JP 63303397 A JP63303397 A JP 63303397A JP 30339788 A JP30339788 A JP 30339788A JP H02150557 A JPH02150557 A JP H02150557A
Authority
JP
Japan
Prior art keywords
clutches
brakes
shift end
clutch
brake
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
Application number
JP63303397A
Other languages
Japanese (ja)
Inventor
Yoshitami Saitou
Nobuyuki Isono
Nobuyasu Suzumura
Makoto Inoue
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 JP63303397A priority Critical patent/JPH02150557A/en
Publication of JPH02150557A publication Critical patent/JPH02150557A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent a clutch or brake from slipping two times during one time speed changing by engaging the clutch with the brake to the full when it is so judged that the speed change has ended by a shift end judging means after starting the engagement between the clutch and the brake.
CONSTITUTION: An automatic transmission consisting of an overdrive mechanism 607 and a gear shifting mechanism 608 is selectively engaged with clutches C0 - C2 and brakes B0 - B2, achieving the specified speed step. When these clutches C0 - C2 and brakes B0 - B2 are selectively engaged with each other, an electronic control means drives a fluid pressure transfer means so as to cause them to be gradually engaged. After engagement starting, when a shift end judging means so judges that it is a shift end when rotational frequency of an input shaft 611 comes equal to estimate shift end time speed or a speed variation in this input shaft 611 becomes lessened, by way of example, these clutches and brakes are fully engaged at once. Thus, such possibility that these clutches and brakes might come into a state of slipping two times during one time speed changing is prevented from occurring, so that improvement in durabil ity is enhanced.
COPYRIGHT: (C)1990,JPO&Japio
JP63303397A 1988-11-30 1988-11-30 Electronically controlled automatic transmission Pending JPH02150557A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63303397A JPH02150557A (en) 1988-11-30 1988-11-30 Electronically controlled automatic transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63303397A JPH02150557A (en) 1988-11-30 1988-11-30 Electronically controlled automatic transmission

Publications (1)

Publication Number Publication Date
JPH02150557A true JPH02150557A (en) 1990-06-08

Family

ID=17920533

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63303397A Pending JPH02150557A (en) 1988-11-30 1988-11-30 Electronically controlled automatic transmission

Country Status (1)

Country Link
JP (1) JPH02150557A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0814283A2 (en) 1996-06-19 1997-12-29 Aisin Aw Co., Ltd. Control apparatus for automatic transmissions
US5788603A (en) * 1995-05-12 1998-08-04 Aisin Aw Co., Ltd. Control system for automatic transmission

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6293555A (en) * 1985-10-16 1987-04-30 Mitsubishi Motors Corp Oil hydraulic pressure control device for automatic transmission in vehicle
JPS63214550A (en) * 1987-03-02 1988-09-07 Mazda Motor Corp Speed change control device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6293555A (en) * 1985-10-16 1987-04-30 Mitsubishi Motors Corp Oil hydraulic pressure control device for automatic transmission in vehicle
JPS63214550A (en) * 1987-03-02 1988-09-07 Mazda Motor Corp Speed change control device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5788603A (en) * 1995-05-12 1998-08-04 Aisin Aw Co., Ltd. Control system for automatic transmission
EP0814283A2 (en) 1996-06-19 1997-12-29 Aisin Aw Co., Ltd. Control apparatus for automatic transmissions
US5842950A (en) * 1996-06-19 1998-12-01 Aisin Aw Co., Ltd. Control apparatus for automatic transmissions

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