JPS56167946A - Speed ratio controller for stepless transmission - Google Patents

Speed ratio controller for stepless transmission

Info

Publication number
JPS56167946A
JPS56167946A JP6961580A JP6961580A JPS56167946A JP S56167946 A JPS56167946 A JP S56167946A JP 6961580 A JP6961580 A JP 6961580A JP 6961580 A JP6961580 A JP 6961580A JP S56167946 A JPS56167946 A JP S56167946A
Authority
JP
Japan
Prior art keywords
pressure
speed ratio
line
valve
speed
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
Application number
JP6961580A
Other languages
Japanese (ja)
Other versions
JPS6324188B2 (en
Inventor
Tomio Oguma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aisin Corp
Original Assignee
Aisin Seiki Co Ltd
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 Aisin Seiki Co Ltd filed Critical Aisin Seiki Co Ltd
Priority to JP6961580A priority Critical patent/JPS56167946A/en
Priority to DE3121160A priority patent/DE3121160A1/en
Priority to US06/267,558 priority patent/US4466312A/en
Publication of JPS56167946A publication Critical patent/JPS56167946A/en
Publication of JPS6324188B2 publication Critical patent/JPS6324188B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Control Of Transmission Device (AREA)

Abstract

PURPOSE: To provide a speed ratio controller which enables sped change in a wide range, by producing an oil pressure signal corresponding to an appropriate speed ratio, from throttle valve response pressure and vehicle speed response pressure and driving a follow-up-type speed ratio control actuator by the signal.
CONSTITUTION: The oil pressure of a main pump 102 is adjusted to line pressure PL by a pressure control valve 120. Since response pressure corresponding to the degree of opening of a throttle valve 160 is applied to the pressure control valve 120, the line pressure PL is heightened. Governor pressure corresponding to the speed of a vehicle is applied by a cover valve 170 to heighten the line pressure PL further. The heightened line pressure PL is apllied to the port (b) of a speed ratio control servomechanism 200 through a line P1 to move a valve element 201 and an actuator 205 to change a port combination. According to this constitution, stepless speed change can be effected in a wide range.
COPYRIGHT: (C)1981,JPO&Japio
JP6961580A 1980-05-27 1980-05-27 Speed ratio controller for stepless transmission Granted JPS56167946A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP6961580A JPS56167946A (en) 1980-05-27 1980-05-27 Speed ratio controller for stepless transmission
DE3121160A DE3121160A1 (en) 1980-05-27 1981-05-27 Control device for controlling the transmission ratio of a gearbox for a motor vehicle
US06/267,558 US4466312A (en) 1980-05-27 1981-05-27 System for controlling transmission ratio of transmission for automotive vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6961580A JPS56167946A (en) 1980-05-27 1980-05-27 Speed ratio controller for stepless transmission

Publications (2)

Publication Number Publication Date
JPS56167946A true JPS56167946A (en) 1981-12-23
JPS6324188B2 JPS6324188B2 (en) 1988-05-19

Family

ID=13407938

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6961580A Granted JPS56167946A (en) 1980-05-27 1980-05-27 Speed ratio controller for stepless transmission

Country Status (1)

Country Link
JP (1) JPS56167946A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05505227A (en) * 1990-03-16 1993-08-05 トロトラック・（ディベロップメント）・リミテッド Improvements in hydraulic control devices or improvements related to hydraulic control devices

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53134162A (en) * 1977-04-28 1978-11-22 Philips Nv Power transmission gear for vehicle* electronic control system thereof* and vehicle with both
JPS5517784A (en) * 1978-05-31 1980-02-07 British Leyland Cars Ltd Rolling friction type transmission device having continuous variable ratio

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53134162A (en) * 1977-04-28 1978-11-22 Philips Nv Power transmission gear for vehicle* electronic control system thereof* and vehicle with both
JPS5517784A (en) * 1978-05-31 1980-02-07 British Leyland Cars Ltd Rolling friction type transmission device having continuous variable ratio

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05505227A (en) * 1990-03-16 1993-08-05 トロトラック・（ディベロップメント）・リミテッド Improvements in hydraulic control devices or improvements related to hydraulic control devices

Also Published As

Publication number Publication date
JPS6324188B2 (en) 1988-05-19

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