JPH02150557A - Electronically controlled automatic transmission - Google Patents
Electronically controlled automatic transmissionInfo
- 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
Links
- 230000005540 biological transmission Effects 0.000 title abstract 2
- 239000012530 fluid Substances 0.000 abstract 1
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
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)
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)
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 |
-
1988
- 1988-11-30 JP JP63303397A patent/JPH02150557A/en active Pending
Patent Citations (2)
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)
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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