JPS6444339A - Method of controlling clutch pressure in continuously variable transmission - Google Patents

Method of controlling clutch pressure in continuously variable transmission

Info

Publication number
JPS6444339A
JPS6444339A JP62199413A JP19941387A JPS6444339A JP S6444339 A JPS6444339 A JP S6444339A JP 62199413 A JP62199413 A JP 62199413A JP 19941387 A JP19941387 A JP 19941387A JP S6444339 A JPS6444339 A JP S6444339A
Authority
JP
Japan
Prior art keywords
clutch pressure
pressure control
control valve
clutch
valve
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
Application number
JP62199413A
Other languages
Japanese (ja)
Inventor
Katsuaki Murano
Sadayuki Hirano
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 JP62199413A priority Critical patent/JPS6444339A/en
Publication of JPS6444339A publication Critical patent/JPS6444339A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Transmission Device (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)

Abstract

PURPOSE:To make it possible to restrain a clutch from abruptly changing, by reducing the duty ratio of a duty signal adapted to be applied to a clutch pressure control solenoid valve, by a predetermined rate when the vehicle operating condition is shifted from a start mode into a drive mode. CONSTITUTION:A belt drive type continuously variable transmission 2 is composed of a primary pressure control valve 34 as a speed change control valve, a constant pressure control valve 38, a line pressure control valve 44 and a clutch pressure control valve 52 in a hydraulic circuit, and the valves 34, 44, 52 are controlled by a control section 82 through solenoid valves 42, 50, 58, respectively. The clutch pressure control valve 52 is provided so as to control the clutch pressure of a hydraulic start clutch 62. In this arrangement, if the control section 82 determines that the vehicle operating condition is shifted from a start mode into a drive mode, the duty ratio of a duty signal applied to the clutch pressure control solenoid valve 58 is reduced by a predetermined rate, thereby it is possible to control the clutch pressure with no abrupt change.
JP62199413A 1987-08-10 1987-08-10 Method of controlling clutch pressure in continuously variable transmission Pending JPS6444339A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62199413A JPS6444339A (en) 1987-08-10 1987-08-10 Method of controlling clutch pressure in continuously variable transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62199413A JPS6444339A (en) 1987-08-10 1987-08-10 Method of controlling clutch pressure in continuously variable transmission

Publications (1)

Publication Number Publication Date
JPS6444339A true JPS6444339A (en) 1989-02-16

Family

ID=16407390

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62199413A Pending JPS6444339A (en) 1987-08-10 1987-08-10 Method of controlling clutch pressure in continuously variable transmission

Country Status (1)

Country Link
JP (1) JPS6444339A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010234963A (en) * 2009-03-31 2010-10-21 Kubota Corp Traveling operation device for working vehicle
CN105752846A (en) * 2015-01-05 2016-07-13 井关农机株式会社 Variable speed control device of operating vehicle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010234963A (en) * 2009-03-31 2010-10-21 Kubota Corp Traveling operation device for working vehicle
CN105752846A (en) * 2015-01-05 2016-07-13 井关农机株式会社 Variable speed control device of operating vehicle
CN105752846B (en) * 2015-01-05 2017-11-03 井关农机株式会社 The speed-change control device of working truck

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