GB1261956A - Creación de Inventos y Patentes con Inteligencia Artificial

GB1261956A – Working-oil pressure control systems for automatic transmissions with torque converters
– Google Patents

GB1261956A – Working-oil pressure control systems for automatic transmissions with torque converters
– Google Patents
Working-oil pressure control systems for automatic transmissions with torque converters

Info

Publication number
GB1261956A

GB1261956A
GB5609969A
GB5609969A
GB1261956A
GB 1261956 A
GB1261956 A
GB 1261956A
GB 5609969 A
GB5609969 A
GB 5609969A
GB 5609969 A
GB5609969 A
GB 5609969A
GB 1261956 A
GB1261956 A
GB 1261956A
Authority
GB
United Kingdom
Prior art keywords
circuit
output
pressure
slip
sawtooth
Prior art date
1969-05-02
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.)

Expired

Application number
GB5609969A
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.)

Denso Corp

Toyota Motor Corp

Original Assignee
Toyota Motor Corp
NipponDenso 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.)
1969-05-02
Filing date
1969-11-17
Publication date
1972-02-02

1969-11-17
Application filed by Toyota Motor Corp, NipponDenso Co Ltd
filed
Critical
Toyota Motor Corp

1972-02-02
Publication of GB1261956A
publication
Critical
patent/GB1261956A/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

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

F16H41/00—Rotary fluid gearing of the hydrokinetic type

F16H41/04—Combined pump-turbine units

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

F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing

F16H47/06—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the hydrokinetic type

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

F16H61/0021—Generation or control of line pressure

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

F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion

F16H59/36—Inputs being a function of speed

F16H59/38—Inputs being a function of speed of gearing elements

F16H2059/385—Turbine speed

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

F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion

F16H59/36—Inputs being a function of speed

F16H59/46—Inputs being a function of speed dependent on a comparison between speeds

Abstract

1,261,956. Change-speed control. NIPPONDENSO K.K., and TOYOTA JIDOSHA KOGYO K.K. 17 Nov., 1969 [2 May, 1969], No. 56099/69. Heading F2D. [Also in Division G4] The level of working pressure in a liquid pressure servo circuit, actuating friction ratioselectors in an automatic change-speed gear on a motor-vehicle, is controlled in accordance with the slip-ratio in an hydrodynamic torqueconverter through which the gear is driven, the pressure control comprising an electronic circuit in which the slip-ratio is represented by a constant amplitude, variable width square wave C, Fig. 6, which chops the sawtooth wave T of an oscillator, to provide pulses of variable duration, which are amplified and fed to a solenoid 50 of a valve 60, Fig. 2, which, through a line 73 applies upward pressure to a main regulator valve 30 in opposition to its constant loading spring 33, whereby regulated pressure 72 is decreased with increase in slip-ratio. Fluid circuit.-Pressure is supplied to the regulator 30 at 70, and to the load-control valve 60 at 71. The valve 60 has a permanent restricted exhaust 66 and a damping-piston 64. Electric circuit.-Variable-frequency outputs 10, 20, Fig. 4, from polarized pick-ups arranged near toothed discs rotating with the converter impeller and turbine respectively have their waveform converted to fixed amplitude, variable width pulses in RPM operational circuits 110, 120, which provide a D.C. voltage output N 1 , N 2 proportional to speed. These feed a slipratio circuit 200, the output N 2 /N 1 of which is the square-wave pulse C, Fig. 6, which, in a comparator circuit 150, Fig. 4, is compared with the sawtooth output T, Fig. 6, of an oscillator 140, Fig. 4. The comparator signal ceases when the sawtooth voltage T exceeds the square-wave slip-ratio voltage S, the resultant output signal being a gapped sawtooth omitting the peaks for a variable duration (dotted in Fig. 6). After amplification at 160 this wave feeds the solenoid 50 of the regulator load-control valve 60 which is thereby intermittently opened for variable periods of time corresponding to the gapped sawtooth pulses. The effective pressure of the main regulator valve is thereby caused to follow a law P=10-65, and varies between 10 and 4 kg./cm2. The slip-ratio circuit 200, Fig. 4, is detailed in Fig. 7. It includes two comparator circuits 280, 240, one, 280, comparing N 2 with N 1 after N 1 has been reduced in a coefficient circuit 210 by a specified denominator (depending on the number of significant figures required in the output) and integrated at 220; the other, 240, comparing the integrated N 1 with N 1 itself. The output of both comparators 240, 280 feeds a re-set pulse generator 290 which may be a multivibrator producing a constant-time pulse and provides the time limits for converting to a definite integral the indefinite integral of the first integrating circuit 220 and a second integrating circuit 260, receiving the output of a constant voltage circuit 250. The output of the second integrating circuit passes through a smoothing circuit 270 to form the output of the circuit shown as 200 in Fig. 4.

GB5609969A
1969-05-02
1969-11-17
Working-oil pressure control systems for automatic transmissions with torque converters

Expired

GB1261956A
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

JP3414169

1969-05-02

Publications (1)

Publication Number
Publication Date

GB1261956A
true

GB1261956A
(en)

1972-02-02

Family
ID=12405920
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB5609969A
Expired

GB1261956A
(en)

1969-05-02
1969-11-17
Working-oil pressure control systems for automatic transmissions with torque converters

Country Status (2)

Country
Link

DE
(1)

DE1958602C2
(en)

GB
(1)

GB1261956A
(en)

Cited By (2)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US4444297A
(en)

1980-11-27
1984-04-24
Automotive Products Limited
Control system for a fluid pressure engaged clutch

WO2012069152A1
(en)

2010-11-25
2012-05-31
Voith Patent Gmbh
Method for setting the working pressure of a transmission

Family Cites Families (4)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

DE621735C
(en)

1932-02-25
1935-11-13
Johann Nikolaus Kiep Dipl Ing

Device for the automatic switching of change gears connected with slip clutches, mainly turbo clutches, especially for motor vehicles

US2557421A
(en)

1944-10-20
1951-06-19
Rolls Royce
Hydraulic power-transmission system

US3295387A
(en)

1963-05-03
1967-01-03
Ford Motor Co
Multiple speed transmission

DE1580550C3
(en)

1966-08-04
1978-09-21
Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart

Switching device for change gears of vehicles, in particular motor vehicles

1969

1969-11-17
GB
GB5609969A
patent/GB1261956A/en
not_active
Expired

1969-11-21
DE
DE19691958602
patent/DE1958602C2/en
not_active
Expired

Cited By (4)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US4444297A
(en)

1980-11-27
1984-04-24
Automotive Products Limited
Control system for a fluid pressure engaged clutch

WO2012069152A1
(en)

2010-11-25
2012-05-31
Voith Patent Gmbh
Method for setting the working pressure of a transmission

CN103238010A
(en)

2010-11-25
2013-08-07
沃依特专利有限责任公司
Method for setting the working pressure of a transmission

US8788161B2
(en)

2010-11-25
2014-07-22
Voith Patent Gmbh
Method for setting the working pressure of a transmission

Also Published As

Publication number
Publication date

DE1958602A1
(en)

1970-11-19

DE1958602C2
(en)

1981-10-29

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