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 change

Info

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
Application number
IT2384677A
Other languages
Italian (it)
Original Assignee
Borg Warner
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 Borg Warner filed Critical Borg Warner
Priority to IT2384677A priority Critical patent/IT1083870B/en
Application granted granted Critical
Publication of IT1083870B publication Critical patent/IT1083870B/en

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.
IT2384677A 1977-05-20 1977-05-20 Gear ratio change control system - uses transducer to provide output torque signal to effect gear ratio change IT1083870B (en)

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)

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