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BR9912756A - Reforçador de freio a vácuo - Google Patents

Reforçador de freio a vácuo

Info

Publication number
BR9912756A
BR9912756A BR9912756-3A BR9912756A BR9912756A BR 9912756 A BR9912756 A BR 9912756A BR 9912756 A BR9912756 A BR 9912756A BR 9912756 A BR9912756 A BR 9912756A
Authority
BR
Brazil
Prior art keywords
permanent magnet
armature
actuation
distance
housing
Prior art date
Application number
BR9912756-3A
Other languages
English (en)
Inventor
Peter Schl Ter
Original Assignee
Lucas Ind Plc
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
Priority claimed from DE29904055U external-priority patent/DE29904055U1/de
Application filed by Lucas Ind Plc filed Critical Lucas Ind Plc
Publication of BR9912756A publication Critical patent/BR9912756A/pt

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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
    • B60T13/46—Vacuum systems
    • B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
    • 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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
    • B60T13/46—Vacuum systems
    • B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
    • B60T13/57—Vacuum systems indirect, i.e. vacuum booster units characterised by constructional features of control valves
    • 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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/72—Electrical control in fluid-pressure brake systems in vacuum systems or vacuum booster units
    • 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
    • B60T7/00—Brake-action initiating means
    • B60T7/12—Brake-action initiating means for automatic initiation; for initiation not subject to will of driver or passenger
    • 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
    • B60T8/32—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 a speed condition, e.g. acceleration or deceleration
    • B60T8/321—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 a speed condition, e.g. acceleration or deceleration deceleration
    • B60T8/3255—Systems in which the braking action is dependent on brake pedal data
    • B60T8/3275—Systems with a braking assistant function, i.e. automatic full braking initiation in dependence of brake pedal velocity

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

"REFORçADOR DE FREIO A VáCUO". Um reforçador de freio a vácuo (10) tem uma câmara de vácuo (18) e uma câmara de funcionamento (20) separadas uma da outra de uma maneira a prova de pressão por uma parede móvel (16). Uma válvula de controle (22), que inclui um alojamento (24) funcionalmente acoplado à parede móvel (16), tem uma primeira sede de válvula (50), que está disposta no alojamento (24) e para obter uma diferença de pressão na parede móvel (16) é capaz de controlar a provisão de pelo menos pressão atmosférica à câmara de funcionamento (20) em depedência do deslocamento de um elemento de entrada (26) acoplado à primeira sede de válvula (50). Para reforço melhorado de força de frenagem durante operações de frenagem de emergência, uma armadura (38), que coopera com um imã permanente (40), é provida no alojamento de válvula de controle (24) e é rigidamente acoplada por um lado ao elemento de atuação (26) em direção de atuação e por outro lado à primeira sede de válvula (50). A armadura (38) é pré-carregada resilientemente contrária à direção de atuação e na posição de partida da válvula de controle (22) é retida a uma primeira distância do imã permanente (40). A armadura (38), quando ela se aproxima do imã permanente (40) e está menos que uma segunda distância afastada previamente definida, que é menor que a primeira distância, é puxada pelo imã permanente (40) contrário à força de pré-carregamento resiliente que atua sobre a armadura (38) e com cancelamento simultâneo de seu, em direção de atuação, acoplamento rígido ao elemento de atuação (26) em contato com o imã permanente (40).
BR9912756-3A 1998-08-05 1999-07-08 Reforçador de freio a vácuo BR9912756A (pt)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19835409 1998-08-05
DE29819224 1998-10-28
DE29904055U DE29904055U1 (de) 1998-08-05 1999-03-05 Unterdruckbremskraftverstärker mit mechanischer Notbremshilfe
PCT/EP1999/004822 WO2000007862A1 (de) 1998-08-05 1999-07-08 Unterdruckbremskraftverstärker mit mechanischer notbremshilfe

Publications (1)

Publication Number Publication Date
BR9912756A true BR9912756A (pt) 2001-05-15

Family

ID=27218570

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9912756-3A BR9912756A (pt) 1998-08-05 1999-07-08 Reforçador de freio a vácuo

Country Status (5)

Country Link
US (1) US6505539B2 (pt)
EP (1) EP1100705B1 (pt)
BR (1) BR9912756A (pt)
ES (1) ES2207260T3 (pt)
WO (1) WO2000007862A1 (pt)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19938040C1 (de) * 1999-08-12 2001-01-04 Lucas Ind Plc Unterdruckbremskraftverstärker mit mechanischer Notbremshilfe und verbesserter Geräuschdämpfung
DE10019425B4 (de) * 2000-04-19 2005-07-21 Lucas Varity Gmbh Unterdruckbremskraftverstärker mit mechanischer Notbremshilfe
DE10019424B4 (de) * 2000-04-19 2005-06-23 Lucas Varity Gmbh Unterdruckbremskraftverstärker mit mechanischer Notbremshilfe
DE10051385C1 (de) * 2000-10-17 2002-03-28 Lucas Varity Gmbh Einrichtung zur Betätigung eines Bremskraftverstärkers
DE10054252B4 (de) 2000-11-02 2006-05-18 Lucas Varity Gmbh Unterdruck-Bremskraftverstärker mit mechanischer Notbremshilfe
DE10054251B4 (de) 2000-11-02 2006-06-01 Lucas Varity Gmbh Steuerventilgehäuse für einen Unterdruck-Bremskraftverstärker
JP3927055B2 (ja) * 2002-03-15 2007-06-06 株式会社デルタツーリング 倍力装置
DE10232918A1 (de) * 2002-07-19 2004-02-12 Lucas Automotive Gmbh Unterdruckbremskraftverstärker mit mechanischer Notbremshilfe
DE102005030223A1 (de) * 2005-06-29 2007-01-04 Lucas Automotive Gmbh Bremskrafterzeuger für eine hydraulische Fahrzeugbremsanlage
FR2938224B1 (fr) * 2008-11-10 2011-10-14 Bosch Gmbh Robert Servomoteur pneumatique d'assistance de freinage d'un vehicule sans a coup pedale.
CN103010197B (zh) * 2012-11-28 2015-04-22 芜湖伯特利汽车安全系统有限公司 一种机械式真空助力器
US10451000B2 (en) * 2015-02-20 2019-10-22 Barry W. Johnston Nearly full adiabatic engine
JP7046747B2 (ja) * 2018-07-18 2022-04-04 日立Astemo株式会社 気圧式倍力装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4405092C1 (de) 1994-02-17 1994-12-22 Lucas Ind Plc Pneumatischer Kraftverstärker mit elektromagnetischer Hilfssteuerung, insbesondere für Kraftfahrzeug-Bremsanlagen
JP3069268B2 (ja) * 1995-06-08 2000-07-24 ボッシュ ブレーキ システム株式会社 ブレーキシステム
JP3456506B2 (ja) * 1995-12-22 2003-10-14 株式会社ボッシュオートモーティブシステム 倍力装置
JP3759306B2 (ja) * 1998-01-23 2006-03-22 日信工業株式会社 電磁補助制御手段付き負圧ブースタ

Also Published As

Publication number Publication date
US6505539B2 (en) 2003-01-14
US20010003947A1 (en) 2001-06-21
WO2000007862A1 (de) 2000-02-17
EP1100705B1 (de) 2003-09-03
ES2207260T3 (es) 2004-05-16
EP1100705A1 (de) 2001-05-23

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Legal Events

Date Code Title Description
B06A Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]
B06A Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: INDEFERIDO COM BASE NO ARTIGO 19 DA LPI 9.279 DE 14/05/1996