GB1306272A - - Google Patents

Info

Publication number
GB1306272A
GB1306272A GB708470A GB708470A GB1306272A GB 1306272 A GB1306272 A GB 1306272A GB 708470 A GB708470 A GB 708470A GB 708470 A GB708470 A GB 708470A GB 1306272 A GB1306272 A GB 1306272A
Authority
GB
United Kingdom
Prior art keywords
pump
pressure
stroke
servo
adjustable
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.)
Expired
Application number
GB708470A
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 filed Critical
Publication of GB1306272A publication Critical patent/GB1306272A/en
Expired 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
    • B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
    • B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
    • B60T1/08—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels using fluid or powdered medium
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D57/00—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders
    • F16D57/06—Liquid-resistance brakes; Brakes using the internal friction of fluids or fluid-like media, e.g. powders comprising a pump circulating fluid, braking being effected by throttling of the circulation
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/78—Features relating to cooling
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Regulating Braking Force (AREA)

Abstract

1306272 Hydrostatic braking DAIMLERBENZ AG 13 Feb 1970 [15 Feb 1969] 7084/70 Heading F2E A vehicle has a hydrostatic pump 1 driven by one or more wheels 2 and acting as a braking means and to permit of different braking forces being obtained, regulating or control devices are provided by which the delivery of the pump 2 and/or the pressure in the pump circuit is selectable by means of an externally actuated member. As shown in Fig. 1 the pump circuit is set for constant pressure by a pressure limiting valve 3 and the stroke of the pump 2 is adjustable; the circuit also includes a cooler 4. As seen in Fig. 4 (not shown) the pump circuit includes an adjustable pressure limiting valve (8) whilst the stroke of the pump (7) is non- adjustable; a similar arrangement is seen in Fig. 7 (not shown) but a by-pass (9) is provided across the pump the by-pass including a valve (11) responsive to pressure downstream of an orifice (10). As shown in Fig. 10, the pump circuit includes an adjustable pressure limiting valve 13 and the stroke of the pump 12 is adjustable by a servo arrangement which regulates the delivery in dependence on the pressure upstream and downstream of an orifice 15; the servo arrangement is fed by a pump 17 and the servo pressure is applied via a control piston 19 to a servo piston 20 connected to stroke-adjusting means of the pump 12. The pump 12 can be set at zero stroke by an electrical switch 23. As seen in Fig. 13 (not shown) simultaneous variation of the delivery pressure and in dependence thereon the stroke of the pump is obtained by a servo arrangement. As seen in Fig. 16 (not shown) the pressure in the pump circuit is selected and a servo-arrangement adjusts the stroke of the pump to give constant power at the selected pressure. Monitoring or warning devices are provided which are operated in dependence on the temperature in the hydraulic circuit.
GB708470A 1969-02-15 1970-02-13 Expired GB1306272A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691907748 DE1907748B1 (en) 1969-02-15 1969-02-15 Hydrostatic braking device for vehicles, in particular for motor vehicles

Publications (1)

Publication Number Publication Date
GB1306272A true GB1306272A (en) 1973-02-07

Family

ID=5725416

Family Applications (1)

Application Number Title Priority Date Filing Date
GB708470A Expired GB1306272A (en) 1969-02-15 1970-02-13

Country Status (3)

Country Link
DE (1) DE1907748B1 (en)
FR (1) FR2035355A5 (en)
GB (1) GB1306272A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1561963A1 (en) * 2004-02-09 2005-08-10 Astra Veicoli Industriali S.p.A. Method and circuit for controlling the flow rate of the hydraulic oil in the brake cooling system of a vehicle

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3436960A1 (en) * 1984-10-09 1986-04-17 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München SERVICE BRAKE FOR A TRUCK OR OMNIBUS
DE10232404A1 (en) * 2002-07-18 2004-01-29 Adam Opel Ag retarder
DE102006042390A1 (en) 2006-06-02 2007-12-06 Brueninghaus Hydromatik Gmbh Drive with energy storage device and method for storing kinetic energy

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT117128B (en) * 1926-07-19 1930-04-10 Sigmund Ing Bauer Brakes, in particular for motor vehicles.
US2030308A (en) * 1933-10-02 1936-02-11 Howard E Marsh Hydraulic brake
DE897212C (en) * 1949-12-14 1955-10-13 Daimler Benz Ag Brake, especially hydraulic brakes and especially for continuous braking of vehicles
DE839159C (en) * 1950-07-14 1952-05-15 Daimler Benz Ag Hydraulic-mechanical brakes, especially for motor vehicles
DE1505693A1 (en) * 1966-01-25 1970-07-02 Daimler Benz Ag Motor vehicle brake
FR1519865A (en) * 1967-02-24 1968-04-05 Labavia Improvements made to hydrodynamic devices, particularly hydrodynamic retarders

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1561963A1 (en) * 2004-02-09 2005-08-10 Astra Veicoli Industriali S.p.A. Method and circuit for controlling the flow rate of the hydraulic oil in the brake cooling system of a vehicle
US7513343B2 (en) 2004-02-09 2009-04-07 Astra Veicoli Industriali S.P.A. Method and circuit for controlling the flow rate of the hydraulic oil in the brake cooling system of a vehicle

Also Published As

Publication number Publication date
DE1907748B1 (en) 1972-05-25
FR2035355A5 (en) 1970-12-18

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees