IT961988B - PRESSURE CONTROL FOR THE ENGAGEMENT OF GEARS IN TRANSMISSIONS FOR VEHICLES - Google Patents

PRESSURE CONTROL FOR THE ENGAGEMENT OF GEARS IN TRANSMISSIONS FOR VEHICLES

Info

Publication number
IT961988B
IT961988B IT5214772A IT5214772A IT961988B IT 961988 B IT961988 B IT 961988B IT 5214772 A IT5214772 A IT 5214772A IT 5214772 A IT5214772 A IT 5214772A IT 961988 B IT961988 B IT 961988B
Authority
IT
Italy
Prior art keywords
transmissions
gears
vehicles
engagement
pressure control
Prior art date
Application number
IT5214772A
Other languages
Italian (it)
Original Assignee
Zahnradfabrik Friedrichshafen
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 Zahnradfabrik Friedrichshafen filed Critical Zahnradfabrik Friedrichshafen
Application granted granted Critical
Publication of IT961988B publication Critical patent/IT961988B/en

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
    • F16H61/0021—Generation or control of line pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
    • F15B11/10—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor in which the servomotor position is a function of the pressure also pressure regulators as operating means for such systems, the device itself may be a position indicating system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/505—Pressure control characterised by the type of pressure control means
    • F15B2211/50509—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means
    • F15B2211/50536—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure upstream of the pressure control means using unloading valves controlling the supply pressure by diverting fluid to the return line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/515—Pressure control characterised by the connections of the pressure control means in the circuit
    • F15B2211/5157—Pressure control characterised by the connections of the pressure control means in the circuit being connected to a pressure source and a return line
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/52—Pressure control characterised by the type of actuation
    • F15B2211/528—Pressure control characterised by the type of actuation actuated by fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/56—Control of an upstream pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/50—Pressure control
    • F15B2211/575—Pilot pressure control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
    • F15B2211/7051—Linear output members
    • F15B2211/7052—Single-acting output members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/76—Control of force or torque of the output member
    • 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
    • F16H61/26—Generation or transmission of movements for final actuating mechanisms
    • F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
    • F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Control Of Transmission Device (AREA)
  • Gear-Shifting Mechanisms (AREA)
IT5214772A 1971-08-20 1972-08-11 PRESSURE CONTROL FOR THE ENGAGEMENT OF GEARS IN TRANSMISSIONS FOR VEHICLES IT961988B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712141693 DE2141693C3 (en) 1971-08-20 1971-08-20 Hand-controlled servo actuation system for a multi-stage working pressure modulation for switching motor vehicle gearboxes

Publications (1)

Publication Number Publication Date
IT961988B true IT961988B (en) 1973-12-10

Family

ID=5817241

Family Applications (1)

Application Number Title Priority Date Filing Date
IT5214772A IT961988B (en) 1971-08-20 1972-08-11 PRESSURE CONTROL FOR THE ENGAGEMENT OF GEARS IN TRANSMISSIONS FOR VEHICLES

Country Status (5)

Country Link
DE (1) DE2141693C3 (en)
FR (1) FR2151294A5 (en)
GB (1) GB1394169A (en)
IT (1) IT961988B (en)
SE (1) SE382421B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2841526A1 (en) * 1978-09-23 1980-04-03 Ford Werke Ag HYDRAULIC CONTROL VALVE SYSTEM FOR A PLANETARY WHEEL INTERCHANGEABLE GEARBOX, ESPECIALLY FOR MOTOR VEHICLES

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH202041A (en) * 1938-02-05 1938-12-31 Oerlikon Buehrle Ag Switching device.
US3572178A (en) * 1968-05-18 1971-03-23 Toyota Motor Co Ltd Hydraulic control system of an automatic transmission

Also Published As

Publication number Publication date
GB1394169A (en) 1975-05-14
DE2141693B2 (en) 1980-10-23
DE2141693C3 (en) 1981-08-27
DE2141693A1 (en) 1973-03-01
FR2151294A5 (en) 1973-04-13
SE382421B (en) 1976-02-02

Similar Documents

Publication Publication Date Title
GB1399518A (en) Worm gears
IL39084A (en) Auto-synchronizing gear system for meshing cyclical members
AT323567B (en) PRESSURIZED GEAR SHIFTING DEVICE FOR AUTOMOTIVE TRANSMISSIONS
AT321732B (en) Device for the electro-hydraulic switching of gear change transmissions
YU73772A (en) Differential gear
YU137472A (en) Change speed gear with a hydraulic clutch
JPS5569784A (en) Fluid machine with inscribed gear
BE789545A (en) GEAR GEARBOX
GB1405517A (en) Hydraulic transmission for a vehicle
GB1398626A (en) Electrohydraulic gear-changing arrangements
NL152341B (en) GEAR GEAR WITH PLANET GEARS OR PARALLEL FORCES TRANSMITTING INTERMEDIATE GEARS.
GB1404000A (en) Gear shift mechanism
GB1407988A (en) Hydraulic valves
AR192542A1 (en) VEHICLE TRANSMISSION EQUIPPED WITH A REDUCER
ZA72319B (en) Gear selection mechanisms for vehicles
JPS55114655A (en) Relief valve for brake gear for vehicle
CS167526B1 (en) Gearshift mechanism for gear shifting of motor vehicles
SE385231B (en) HYDRAULIC GEAR ENGINE
IT963802B (en) PLANETARY GEAR TRAIN
IT961988B (en) PRESSURE CONTROL FOR THE ENGAGEMENT OF GEARS IN TRANSMISSIONS FOR VEHICLES
CS177427B1 (en) Change-speed gearing control device for gearboxws wiyh gear change
AU7093774A (en) Gear drive arrangement
CS188125B2 (en) Planet gear
IT1008090B (en) PRESSURE CONTROL FOR THE INSERTION OF GEARS ON VEHICLE SPEED CHANGES
IT956071B (en) CASE FOR GEAR TRANSMISSIONS OR THE LIKE