JPS6446057A - Control method for belt ratio of continuously variable transmission - Google Patents

Control method for belt ratio of continuously variable transmission

Info

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
Application number
JP62199421A
Other languages
Japanese (ja)
Other versions
JP2863919B2 (en
Inventor
Sadayuki Hirano
Katsuaki Murano
Yoshinobu Yamashita
Takumi Tatsumi
Hiroaki Yamamoto
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.)
Mitsubishi Electric Corp
Suzuki Motor Corp
Original Assignee
Mitsubishi Electric Corp
Suzuki Motor Corp
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 Mitsubishi Electric Corp, Suzuki Motor Corp filed Critical Mitsubishi Electric Corp
Priority to JP62199421A priority Critical patent/JP2863919B2/en
Publication of JPS6446057A publication Critical patent/JPS6446057A/en
Application granted granted Critical
Publication of JP2863919B2 publication Critical patent/JP2863919B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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.
JP62199421A 1987-08-10 1987-08-10 Belt ratio control method for continuously variable transmission Expired - Lifetime JP2863919B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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