IT1246138B - Complesso di verifica della tenuta della valvole essenziali ai fini della sicurezza, per sistemi di frenatura anti-bloccaggio per veicoli stradali - Google Patents
Complesso di verifica della tenuta della valvole essenziali ai fini della sicurezza, per sistemi di frenatura anti-bloccaggio per veicoli stradaliInfo
- Publication number
- IT1246138B IT1246138B ITRM910067A ITRM910067A IT1246138B IT 1246138 B IT1246138 B IT 1246138B IT RM910067 A ITRM910067 A IT RM910067A IT RM910067 A ITRM910067 A IT RM910067A IT 1246138 B IT1246138 B IT 1246138B
- Authority
- IT
- Italy
- Prior art keywords
- pressure
- pressure chamber
- outlet
- piston
- volume
- Prior art date
Links
- 238000012795 verification Methods 0.000 title 1
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
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
- B60T8/32—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
- B60T8/88—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 with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
-
- 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
- B60T8/34—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 having a fluid pressure regulator responsive to a speed condition
- B60T8/42—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 having a fluid pressure regulator responsive to a speed condition having expanding chambers for controlling pressure, i.e. closed systems
- B60T8/4208—Debooster systems
- B60T8/4225—Debooster systems having a fluid actuated expansion unit
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Regulating Braking Force (AREA)
Abstract
L'invenzione concerne un sistema antibloccaggio per un veicolo stradale, in cui la regolazione della pressione frenante avviene secondo il principio della variazione del volume di una camera di pressione di uscita collegata con il freno della ruota di un modulatore di pressione avente una camera di pressione di comando limitata da uno stantuffo verso la camera di pressione di uscita in cui, tramite una valvola pilota di entrata, è racchiusa in modo permanente la pressione di una sorgente di pressione ausiliaria, per cui lo stantuffo è tenuto nella sua posizione finale connessa al minimo volume della camera di pressione di uscita. Con la valvola pilota di entrata è collegata in serie una valvola di non ritorno che, in caso di mancata risposta della sorgente di pressione ausiliaria, impedisce una caduta di pressione nella camera di pressione di comando. Gli aumenti di volume della camera di pressione di uscita, necessari alle fasi di abbassamento di pressione della regolazione antibloccaggio sono pilotabili attraverso una valvola pilota di uscita, dove la camera di pressione di uscita è intercettabile, per la durata di cicli di regolazione antibloccaggio, contro il dispositivo di frenatura. Il modulatore di pressione è equipaggiato con un rivelatore di posizione che produce segnali di uscita caratteristici della posizione del pistone. Attraverso un elemento di richiamo di molla elastica, lo stantuffo del modulatore è spostabile nel senso di un aumento di volume della camera di pressione di uscita. Per mezzo di una valvola di prova si possono controllare temporaneamente abbassamenti di pressione di uscita della sorgente di pressione ausiliaria. Gli spostamenti di pistone derivanti da tali abbassamenti di pressione, rilevati dal rivelatore di posizione, vengono segnalati come indizio di anermeticità della valvola di non ritorno.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4003586A DE4003586C1 (it) | 1990-02-07 | 1990-02-07 |
Publications (3)
Publication Number | Publication Date |
---|---|
ITRM910067A0 ITRM910067A0 (it) | 1991-01-28 |
ITRM910067A1 ITRM910067A1 (it) | 1992-07-28 |
IT1246138B true IT1246138B (it) | 1994-11-15 |
Family
ID=6399582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITRM910067A IT1246138B (it) | 1990-02-07 | 1991-01-28 | Complesso di verifica della tenuta della valvole essenziali ai fini della sicurezza, per sistemi di frenatura anti-bloccaggio per veicoli stradali |
Country Status (6)
Country | Link |
---|---|
US (1) | US5123713A (it) |
JP (1) | JP2717460B2 (it) |
DE (1) | DE4003586C1 (it) |
FR (1) | FR2657832B1 (it) |
GB (1) | GB2241029B (it) |
IT (1) | IT1246138B (it) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4232614A1 (de) * | 1992-09-29 | 1994-03-31 | Teves Gmbh Alfred | Blockiergeschützte hydraulische Bremsanlage |
US5941608A (en) | 1996-03-07 | 1999-08-24 | Kelsey-Hayes Company | Electronic brake management system with manual fail safe |
US6135572A (en) * | 1996-05-31 | 2000-10-24 | Varity Gmbh | Actuation unit for an electronically controlled vehicle brake system |
US6547048B2 (en) * | 2001-05-01 | 2003-04-15 | Delphi Technologies, Inc. | Manual braking system with hydraulic brake booster |
US6860569B1 (en) | 2002-05-23 | 2005-03-01 | Kelsey-Hayes Company | Electro-hydraulic brake system with four wheel push through |
CN114056313B (zh) * | 2022-01-17 | 2022-04-22 | 万向钱潮股份有限公司 | 一种多轴商用车线控制动***故障诊断方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3723875A1 (de) * | 1987-07-18 | 1989-02-02 | Daimler Benz Ag | Sicherheitseinrichtung fuer ein mit einem antiblockiersystem ausgeruestetes strassenfahrzeug |
DE3812830C1 (it) * | 1988-04-16 | 1989-07-27 | Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De | |
DE3812831C1 (it) * | 1988-04-16 | 1989-08-03 | Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De | |
DE3900850C1 (it) * | 1989-01-13 | 1990-03-22 | Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De |
-
1990
- 1990-02-07 DE DE4003586A patent/DE4003586C1/de not_active Expired - Lifetime
-
1991
- 1991-01-28 IT ITRM910067A patent/IT1246138B/it active IP Right Grant
- 1991-02-04 GB GB9102337A patent/GB2241029B/en not_active Expired - Fee Related
- 1991-02-05 FR FR9101265A patent/FR2657832B1/fr not_active Expired - Fee Related
- 1991-02-05 US US07/650,603 patent/US5123713A/en not_active Expired - Fee Related
- 1991-02-06 JP JP3100606A patent/JP2717460B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
GB9102337D0 (en) | 1991-03-20 |
GB2241029B (en) | 1994-08-24 |
FR2657832A1 (fr) | 1991-08-09 |
JP2717460B2 (ja) | 1998-02-18 |
DE4003586C1 (it) | 1991-07-18 |
FR2657832B1 (fr) | 1995-11-10 |
ITRM910067A0 (it) | 1991-01-28 |
GB2241029A (en) | 1991-08-21 |
US5123713A (en) | 1992-06-23 |
ITRM910067A1 (it) | 1992-07-28 |
JPH0752783A (ja) | 1995-02-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted | ||
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19970225 |