JPS57154524A - Oil pressure control mechanism for friction clutch - Google Patents

Oil pressure control mechanism for friction clutch

Info

Publication number
JPS57154524A
JPS57154524A JP56037891A JP3789181A JPS57154524A JP S57154524 A JPS57154524 A JP S57154524A JP 56037891 A JP56037891 A JP 56037891A JP 3789181 A JP3789181 A JP 3789181A JP S57154524 A JPS57154524 A JP S57154524A
Authority
JP
Japan
Prior art keywords
gear shifting
oil pressure
friction clutch
detector
reduce
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
JP56037891A
Other languages
Japanese (ja)
Other versions
JPH0154576B2 (en
Inventor
Takeo Hiramatsu
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 Motors Corp
Original Assignee
Mitsubishi Motors 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 Motors Corp filed Critical Mitsubishi Motors Corp
Priority to JP56037891A priority Critical patent/JPS57154524A/en
Priority to US06/288,106 priority patent/US4468988A/en
Priority to GB8123395A priority patent/GB2081413B/en
Priority to DE3130871A priority patent/DE3130871C3/en
Priority to FR8115112A priority patent/FR2487742A1/en
Publication of JPS57154524A publication Critical patent/JPS57154524A/en
Publication of JPH0154576B2 publication Critical patent/JPH0154576B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/14—Control of torque converter lock-up clutches
    • F16H61/143—Control of torque converter lock-up clutches using electric control means

Abstract

PURPOSE:To reduce the consumption of fuel, by providing a gear shifting detector and an oil pressure controller which reduces the regulated oil pressure of a hydraulic friction clutch in response to the operation of the detector and by disengaging the clutch when gear shifting is detected. CONSTITUTION:A gear shifting detector (not shown in the drawing), which measures the change in the revolution speed of a driven shaft 12 to regard a transmission gear mechanism as being under gear shifting when the measured change is more than a prescribed value, is provided in an electronic controller 46. When the transmission gear mechanism is regarded as being under gear shifting, pulses to be supplied from the electronic controller 46 to a solenoid valve 44 are made substantially zero to reduce the oil pressure of an oil passage 88 below a prescribed level through a valve element 126 to diminish regulated oil pressure through a friction clutch control valve 42 so that a friction clutch 8 is disengaged. According to this constitution, a fluid coupling is kept in the state of direct connection except during the gear shifting. Direct connection from a low speed stage is thus enabled to reduce the consumption of fuel.
JP56037891A 1980-08-04 1981-03-18 Oil pressure control mechanism for friction clutch Granted JPS57154524A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP56037891A JPS57154524A (en) 1981-03-18 1981-03-18 Oil pressure control mechanism for friction clutch
US06/288,106 US4468988A (en) 1980-08-04 1981-07-29 Slip control system for a clutch
GB8123395A GB2081413B (en) 1980-08-04 1981-07-30 Fluid pressure control of friction clutch
DE3130871A DE3130871C3 (en) 1980-08-04 1981-08-04 Torque transmission device with a drive shaft rotating with superimposed torque vibrations
FR8115112A FR2487742A1 (en) 1980-08-04 1981-08-04 TORQUE TRANSMISSION SYSTEM

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56037891A JPS57154524A (en) 1981-03-18 1981-03-18 Oil pressure control mechanism for friction clutch

Publications (2)

Publication Number Publication Date
JPS57154524A true JPS57154524A (en) 1982-09-24
JPH0154576B2 JPH0154576B2 (en) 1989-11-20

Family

ID=12510155

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56037891A Granted JPS57154524A (en) 1980-08-04 1981-03-18 Oil pressure control mechanism for friction clutch

Country Status (1)

Country Link
JP (1) JPS57154524A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60241569A (en) * 1984-05-14 1985-11-30 Mazda Motor Corp Control unit of automatic speed change gear
JPS60241570A (en) * 1984-05-14 1985-11-30 Mazda Motor Corp Control unit of automatic speed change gear
JPS6165949A (en) * 1984-09-08 1986-04-04 Mazda Motor Corp Controlling device of automatic transmission
JPS61144465A (en) * 1984-12-18 1986-07-02 Mazda Motor Corp Control device for automatic transmission gear
US5190128A (en) * 1990-06-28 1993-03-02 Jatco Corporation Lock-up control during shifting
US5219055A (en) * 1989-09-08 1993-06-15 Jatco Corporation Lock-up clutch pressure control device
CN107429760A (en) * 2015-03-16 2017-12-01 舍弗勒技术股份两合公司 Method for the hydraulic package of hydraulic operation formula friction clutch and for manipulating hydraulic operation formula friction clutch

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60241569A (en) * 1984-05-14 1985-11-30 Mazda Motor Corp Control unit of automatic speed change gear
JPS60241570A (en) * 1984-05-14 1985-11-30 Mazda Motor Corp Control unit of automatic speed change gear
JPS6165949A (en) * 1984-09-08 1986-04-04 Mazda Motor Corp Controlling device of automatic transmission
JPH0369018B2 (en) * 1984-09-08 1991-10-30 Mazda Motor
JPS61144465A (en) * 1984-12-18 1986-07-02 Mazda Motor Corp Control device for automatic transmission gear
JPS6363790B2 (en) * 1984-12-18 1988-12-08
US5219055A (en) * 1989-09-08 1993-06-15 Jatco Corporation Lock-up clutch pressure control device
US5190128A (en) * 1990-06-28 1993-03-02 Jatco Corporation Lock-up control during shifting
CN107429760A (en) * 2015-03-16 2017-12-01 舍弗勒技术股份两合公司 Method for the hydraulic package of hydraulic operation formula friction clutch and for manipulating hydraulic operation formula friction clutch

Also Published As

Publication number Publication date
JPH0154576B2 (en) 1989-11-20

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