IT1083870B - Gear ratio change control system - uses transducer to provide output torque signal to effect gear ratio change - Google Patents
Gear ratio change control system - uses transducer to provide output torque signal to effect gear ratio changeInfo
- Publication number
- IT1083870B IT1083870B IT2384677A IT2384677A IT1083870B IT 1083870 B IT1083870 B IT 1083870B IT 2384677 A IT2384677 A IT 2384677A IT 2384677 A IT2384677 A IT 2384677A IT 1083870 B IT1083870 B IT 1083870B
- Authority
- IT
- Italy
- Prior art keywords
- gear ratio
- ratio change
- output torque
- transducer
- control system
- Prior art date
Links
Landscapes
- Control Of Transmission Device (AREA)
Abstract
The control system is used to change the gear ratio in a gear set regulated by a change-gear signal from a control unit. A transducer provides an output torque signal which is compared to other signals for initiating the gear change. Alternatively, an automatic transmission changes a gear ratio when engine torque is transferred from one member to another member of a three member planetary gear set. The transfer is accomplished through friction elements engaged by hydraulic pressure. A closed loop electrical circuits is completed between a transducer, which provides an electrical signal related to the output torque of the transmission, and a control valve, to vary the control valve pressure. A circuit for computing reaction torque is coupled between the transducer and a logic control circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2384677A IT1083870B (en) | 1977-05-20 | 1977-05-20 | Gear ratio change control system - uses transducer to provide output torque signal to effect gear ratio change |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT2384677A IT1083870B (en) | 1977-05-20 | 1977-05-20 | Gear ratio change control system - uses transducer to provide output torque signal to effect gear ratio change |
Publications (1)
Publication Number | Publication Date |
---|---|
IT1083870B true IT1083870B (en) | 1985-05-25 |
Family
ID=11210379
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT2384677A IT1083870B (en) | 1977-05-20 | 1977-05-20 | Gear ratio change control system - uses transducer to provide output torque signal to effect gear ratio change |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1083870B (en) |
-
1977
- 1977-05-20 IT IT2384677A patent/IT1083870B/en active
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