FR2264998A1 - Variable output pneumatic train brake - with double piston for feedback control release between small pressure steps - Google Patents

Variable output pneumatic train brake - with double piston for feedback control release between small pressure steps

Info

Publication number
FR2264998A1
FR2264998A1 FR7507014A FR7507014A FR2264998A1 FR 2264998 A1 FR2264998 A1 FR 2264998A1 FR 7507014 A FR7507014 A FR 7507014A FR 7507014 A FR7507014 A FR 7507014A FR 2264998 A1 FR2264998 A1 FR 2264998A1
Authority
FR
France
Prior art keywords
control
feedback control
double piston
small pressure
pressure
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Withdrawn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
FR7507014A
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.)
Knorr Bremse AG
Original Assignee
Knorr Bremse AG
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 Knorr Bremse AG filed Critical Knorr Bremse AG
Publication of FR2264998A1 publication Critical patent/FR2264998A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/18—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution
    • B60T8/1812—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution characterised by the means for pressure reduction
    • B60T8/1818—Lever mechanism

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Braking Systems And Boosters (AREA)
  • Hydraulic Control Valves For Brake Systems (AREA)

Abstract

The pneumatic brakes of the train are controlled by a regulating valve which translates the control pressures into braking pressures. In order to achieve fine braking control, without hysteresis losses, and without the control valve sticking for small variations in control pressure, the feedback control piston has a double piston arrangement with a control pressure to release the piston between small pressure steps. The control valve has a variable pivot control lever so that the pressure multiplication factor can be varied to suit the driving conditions i.e. loading of the train.
FR7507014A 1974-03-19 1975-03-06 Variable output pneumatic train brake - with double piston for feedback control release between small pressure steps Withdrawn FR2264998A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2413060A DE2413060A1 (en) 1974-03-19 1974-03-19 PRESSURE TRANSLATORS, ESPECIALLY FOR LOAD-DEPENDENT COMPRESSED AIR BRAKES OF RAIL VEHICLES

Publications (1)

Publication Number Publication Date
FR2264998A1 true FR2264998A1 (en) 1975-10-17

Family

ID=5910468

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7507014A Withdrawn FR2264998A1 (en) 1974-03-19 1975-03-06 Variable output pneumatic train brake - with double piston for feedback control release between small pressure steps

Country Status (5)

Country Link
CH (1) CH581038A5 (en)
DD (1) DD118030A5 (en)
DE (1) DE2413060A1 (en)
FR (1) FR2264998A1 (en)
SE (1) SE396924B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2289373A1 (en) * 1974-10-31 1976-05-28 Knorr Bremse Gmbh Load controlled train pneumatic brakes - with minimum pressure control to ensure sufficient base pressure to overcome system resistance
FR2387826A1 (en) * 1977-04-20 1978-11-17 Oerlikon Buehrle Ag AUTOMATIC COMPRESSED AIR BRAKE, ACTING ACCORDING TO THE LOAD

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2646286C3 (en) * 1976-10-14 1981-10-01 Knorr-Bremse GmbH, 8000 München Intensifier
DE3208151C2 (en) * 1982-03-06 1985-03-07 Daimler-Benz Ag, 7000 Stuttgart Pressure intensifiers for pneumatic or hydraulic drives, in particular for motor vehicles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2289373A1 (en) * 1974-10-31 1976-05-28 Knorr Bremse Gmbh Load controlled train pneumatic brakes - with minimum pressure control to ensure sufficient base pressure to overcome system resistance
FR2387826A1 (en) * 1977-04-20 1978-11-17 Oerlikon Buehrle Ag AUTOMATIC COMPRESSED AIR BRAKE, ACTING ACCORDING TO THE LOAD

Also Published As

Publication number Publication date
SE396924B (en) 1977-10-10
CH581038A5 (en) 1976-10-29
SE7503056L (en) 1975-09-22
DD118030A5 (en) 1976-02-12
DE2413060A1 (en) 1975-10-02

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Legal Events

Date Code Title Description
ST Notification of lapse