JPS6446057A - Control method for belt ratio of continuously variable transmission - Google Patents
Control method for belt ratio of continuously variable transmissionInfo
- Publication number
- JPS6446057A JPS6446057A JP62199421A JP19942187A JPS6446057A JP S6446057 A JPS6446057 A JP S6446057A JP 62199421 A JP62199421 A JP 62199421A JP 19942187 A JP19942187 A JP 19942187A JP S6446057 A JPS6446057 A JP S6446057A
- Authority
- JP
- Japan
- Prior art keywords
- belt
- control
- speed change
- speed
- slippage
- 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
Links
Landscapes
- Control Of Transmission Device (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
- Transmissions By Endless Flexible Members (AREA)
Abstract
PURPOSE:To prevent the lowering of a belt holding force, the slippage of a belt, and the damage and wear of the belt and pulleys by carrying out a speed change control based on at least the stored ratio fixed value during a speed control at the time of becoming an open loop control. CONSTITUTION:The opening/closing operations of a primary pressure controlling first three-way solenoid valve 42 and a constant pressure control valve 38, a line pressure controlling second three-way solenoid valve 50, and a clutch pressure controlling third three-way solenoid valve 58, and a pressure sensor 68 are controlled by a control part 82. Also, the control part 82 stores the integral value of a ratio fixed value in the final ratio fixed condition in a speed change control, and, when an open loop control is brought about due to a decelerating operation, a speed change control, e.g., the control of engine speed is carried out through the integral value and a defined delay constant. Accordingly, there is no effect of the dispersion of an actual machine such as a valve body or a pump, etc. enabling a speed change control to be securely carried out at a constant speed, preventing the lowering of a belt holding force as well as the slippage of a belt. Further, the damage and wear of the belt and pulleys at the time of the slippage of belt can be prevented, increasing a working life.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62199421A JP2863919B2 (en) | 1987-08-10 | 1987-08-10 | Belt ratio control method for continuously variable transmission |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62199421A JP2863919B2 (en) | 1987-08-10 | 1987-08-10 | Belt ratio control method for continuously variable transmission |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6446057A true JPS6446057A (en) | 1989-02-20 |
JP2863919B2 JP2863919B2 (en) | 1999-03-03 |
Family
ID=16407526
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62199421A Expired - Lifetime JP2863919B2 (en) | 1987-08-10 | 1987-08-10 | Belt ratio control method for continuously variable transmission |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2863919B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61159645A (en) * | 1984-12-29 | 1986-07-19 | Konishiroku Photo Ind Co Ltd | Heat developable colored sensitive material |
JPH0648223A (en) * | 1992-07-27 | 1994-02-22 | Nec Ic Microcomput Syst Ltd | Automotive power transmission device |
JP2003042275A (en) * | 2001-07-24 | 2003-02-13 | Toyota Motor Corp | Controller for continuously variable transmission |
JP2003509642A (en) * | 1999-09-15 | 2003-03-11 | ファン ドールネズ トランスミッシー ベスローテン フェンノートチャップ | Control system for continuously variable transmission and continuously variable transmission equipped with the control system |
WO2007075080A1 (en) * | 2005-12-28 | 2007-07-05 | Robert Bosch Gmbh | Method for controlling a belt-type continuously variable transmission and a friction clutch in a vehicular drive line |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62191239A (en) * | 1986-02-18 | 1987-08-21 | Nissan Motor Co Ltd | Device for controlling continuously variable transmission |
-
1987
- 1987-08-10 JP JP62199421A patent/JP2863919B2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62191239A (en) * | 1986-02-18 | 1987-08-21 | Nissan Motor Co Ltd | Device for controlling continuously variable transmission |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61159645A (en) * | 1984-12-29 | 1986-07-19 | Konishiroku Photo Ind Co Ltd | Heat developable colored sensitive material |
JPH0648223A (en) * | 1992-07-27 | 1994-02-22 | Nec Ic Microcomput Syst Ltd | Automotive power transmission device |
JP2003509642A (en) * | 1999-09-15 | 2003-03-11 | ファン ドールネズ トランスミッシー ベスローテン フェンノートチャップ | Control system for continuously variable transmission and continuously variable transmission equipped with the control system |
JP2003042275A (en) * | 2001-07-24 | 2003-02-13 | Toyota Motor Corp | Controller for continuously variable transmission |
WO2007075080A1 (en) * | 2005-12-28 | 2007-07-05 | Robert Bosch Gmbh | Method for controlling a belt-type continuously variable transmission and a friction clutch in a vehicular drive line |
US8118707B2 (en) | 2005-12-28 | 2012-02-21 | Robert Bosch Gmbh | Method for controlling a belt-type continuously variable transmission and a friction clutch in a vehicular drive line |
Also Published As
Publication number | Publication date |
---|---|
JP2863919B2 (en) | 1999-03-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313117 |
|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071218 Year of fee payment: 9 |