JPS6449748A - Control device for speed change of continuously variable transmission - Google Patents
Control device for speed change of continuously variable transmissionInfo
- Publication number
- JPS6449748A JPS6449748A JP20699487A JP20699487A JPS6449748A JP S6449748 A JPS6449748 A JP S6449748A JP 20699487 A JP20699487 A JP 20699487A JP 20699487 A JP20699487 A JP 20699487A JP S6449748 A JPS6449748 A JP S6449748A
- Authority
- JP
- Japan
- Prior art keywords
- speed change
- speed
- target
- calculates
- change ratio
- 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
Landscapes
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
- Control Of Transmission Device (AREA)
Abstract
PURPOSE:To improve the whole controlling property by obtaining a speed change speed from a target speed change ratio and an actual speed change ratio in a low rotation zone while from a target rotating speed and an actual rotating speed in a high rotation zone and carrying out following control. CONSTITUTION:When a target primary pulley rotating speed NPD which is set from an actual speed change ratio (i) and a throttle opening theta by a retrieving part 41 is below a defined value, a target speed change ratio calculating part 42 calculates a target speed change ratio (is) from the NPD and a secondary pulley rotating speed NS via a control method selecting part 60 and, further, a calculating part 45 calculates a speed change speed di/at from the result and the actual speed change ratio (i), to control a duty ratio. On the other hand, in a high rotation zone above a defined value, a calculating part 63 calculates a target primary pulley rotating speed changing speed via the control method selecting part 60, and a calculating part 61 calculates a speed change speed di/dt from the result and a primary pulley rotating speed Np to carry out duty ratio control. Thereby, controllability can be improved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20699487A JPS6449748A (en) | 1987-08-19 | 1987-08-19 | Control device for speed change of continuously variable transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20699487A JPS6449748A (en) | 1987-08-19 | 1987-08-19 | Control device for speed change of continuously variable transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6449748A true JPS6449748A (en) | 1989-02-27 |
Family
ID=16532425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20699487A Pending JPS6449748A (en) | 1987-08-19 | 1987-08-19 | Control device for speed change of continuously variable transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6449748A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05504156A (en) * | 1990-01-18 | 1993-07-01 | ピーピージー インダストリーズ，インコーポレイテッド | Polyamine modified silane resin |
-
1987
- 1987-08-19 JP JP20699487A patent/JPS6449748A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05504156A (en) * | 1990-01-18 | 1993-07-01 | ピーピージー インダストリーズ，インコーポレイテッド | Polyamine modified silane resin |
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