FR2359720A1 - Pneumatic gear change system - has pressure reduction valve positioned between gear change servo supply and selector valves - Google Patents

Pneumatic gear change system - has pressure reduction valve positioned between gear change servo supply and selector valves

Info

Publication number
FR2359720A1
FR2359720A1 FR7724128A FR7724128A FR2359720A1 FR 2359720 A1 FR2359720 A1 FR 2359720A1 FR 7724128 A FR7724128 A FR 7724128A FR 7724128 A FR7724128 A FR 7724128A FR 2359720 A1 FR2359720 A1 FR 2359720A1
Authority
FR
France
Prior art keywords
gear change
pressure reduction
reduction valve
check valves
pneumatic
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.)
Withdrawn
Application number
FR7724128A
Other languages
French (fr)
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.)
Industrie Magneti Marelli SRL
Marelli Europe SpA
Original Assignee
Fabbrica Italiana Magneti Marelli SpA
Magneti Marelli SpA
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 Fabbrica Italiana Magneti Marelli SpA, Magneti Marelli SpA filed Critical Fabbrica Italiana Magneti Marelli SpA
Publication of FR2359720A1 publication Critical patent/FR2359720A1/en
Withdrawn legal-status Critical Current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
    • F16H61/26—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
    • F16H61/2807—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 using electric control signals for shift actuators, e.g. electro-hydraulic control therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/18—Conjoint control of vehicle sub-units of different type or different function including control of braking systems
    • 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
    • F16H59/02—Selector apparatus
    • F16H59/04—Ratio selector apparatus
    • F16H59/045—Ratio selector apparatus consisting of fluid valves
    • 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
    • F16H59/50—Inputs being a function of the status of the machine, e.g. position of doors or safety belts
    • F16H59/56—Inputs being a function of the status of the machine, e.g. position of doors or safety belts dependent on signals from the main clutch

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Gear-Shifting Mechanisms (AREA)

Abstract

The pneumatic gear change assembly consists of a check valve whose moving part is actuated each time the clutch pedal is depressed. The valve makes a connection between a compressed air source and the gear change servo motors. The reduction gear is actuated by a piston cylinder assembly whose pressure chambers are alternatively supplied by two electro magnetic check valves. The electromagnetic windings are selected by a manual switch and current is supplied via the clutch pedal linked cam follower. The check valves are connected to the main check valves via a pressure reduction valve.
FR7724128A 1976-07-30 1977-07-29 Pneumatic gear change system - has pressure reduction valve positioned between gear change servo supply and selector valves Withdrawn FR2359720A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT25850/76A IT1067439B (en) 1976-07-30 1976-07-30 PNEUMATIC GROUP TO FEED THE COMMAND ORGANS OF THE GEARS OF THE GEARBOXES CHANGES OF MOTOR VEHICLES AND SIMILAR

Publications (1)

Publication Number Publication Date
FR2359720A1 true FR2359720A1 (en) 1978-02-24

Family

ID=11217921

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7724128A Withdrawn FR2359720A1 (en) 1976-07-30 1977-07-29 Pneumatic gear change system - has pressure reduction valve positioned between gear change servo supply and selector valves

Country Status (4)

Country Link
DE (1) DE2733595A1 (en)
ES (1) ES461161A1 (en)
FR (1) FR2359720A1 (en)
IT (1) IT1067439B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3245405A1 (en) * 1982-12-08 1984-06-14 Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover FOREIGN POWERED TRANSMISSION WITH GEAR LOCK
DE3414107A1 (en) * 1984-04-13 1985-10-24 Rudolf Prof. Dr.-Ing. 6100 Darmstadt Franke Variable-speed spur-gear transmission shiftable under load

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2011207A1 (en) * 1968-06-19 1970-02-27 Birfield Transmissions

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2011207A1 (en) * 1968-06-19 1970-02-27 Birfield Transmissions

Also Published As

Publication number Publication date
ES461161A1 (en) 1978-06-01
DE2733595A1 (en) 1978-03-16
IT1067439B (en) 1985-03-16

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Legal Events

Date Code Title Description
ST Notification of lapse