US20040130207A1 - Three state magnet valve - Google Patents

Three state magnet valve Download PDF

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Publication number
US20040130207A1
US20040130207A1 US10/338,100 US33810003A US2004130207A1 US 20040130207 A1 US20040130207 A1 US 20040130207A1 US 33810003 A US33810003 A US 33810003A US 2004130207 A1 US2004130207 A1 US 2004130207A1
Authority
US
United States
Prior art keywords
application
solenoid valve
solenoid
pilot
state magnet
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.)
Abandoned
Application number
US10/338,100
Other languages
English (en)
Inventor
Leon Corley
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.)
Westinghouse Air Brake Technologies Corp
Original Assignee
Westinghouse Air Brake Technologies Corp
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 Westinghouse Air Brake Technologies Corp filed Critical Westinghouse Air Brake Technologies Corp
Priority to US10/338,100 priority Critical patent/US20040130207A1/en
Assigned to WESTINGHOUSE AIR BRAKE TECHNOLOGIES reassignment WESTINGHOUSE AIR BRAKE TECHNOLOGIES ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CORLEY, LEON W., JR.
Priority to CA002449757A priority patent/CA2449757A1/en
Priority to AU2004200038A priority patent/AU2004200038A1/en
Priority to JP2004001339A priority patent/JP2004210278A/ja
Priority to EP04290030A priority patent/EP1437278B1/en
Priority to DE602004009483T priority patent/DE602004009483D1/de
Priority to MXPA04000112A priority patent/MXPA04000112A/es
Priority to BR0400104-4A priority patent/BRPI0400104A/pt
Priority to AT04290030T priority patent/ATE375904T1/de
Publication of US20040130207A1 publication Critical patent/US20040130207A1/en
Priority to US11/107,357 priority patent/US7222922B2/en
Abandoned legal-status Critical Current

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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
    • B60T13/66—Electrical control in fluid-pressure brake systems
    • B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
    • B60T13/683—Electrical control in fluid-pressure brake systems by electrically-controlled valves in pneumatic systems or parts thereof
    • 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
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/025—Electrically controlled valves
    • B60T15/027—Electrically controlled valves in pneumatic systems
    • 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
    • B60T8/36—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 including a pilot valve responding to an electromagnetic force
    • B60T8/3605—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 including a pilot valve responding to an electromagnetic force wherein the pilot valve is mounted in a circuit controlling the working fluid system

Definitions

  • the present invention generally relates to a fluid control valve. More particularly, the invention relates to a fluid control valve that utilizes several solenoid valves to achieve three states of operation.
  • FIG. 2 An ANSI schematic of the operation of the prior art R-10 magnet valve is given in FIG. 2.
  • the R-10 magnet valve described below is manufactured and sold by Westinghouse Air Brake Technologies Corporation.
  • the R-10 magnet valve consists of two 2-way Air Flow Management Valves, one 3-way Application Pilot Valve, and one 3-way Release Pilot Valve. The operation cycle of the R-10 magnet valve is described below:
  • FIG. 3 An ANSI schematic of the operation of the prior art N-7-D Magnet Valve is given in FIG. 3.
  • the N-7-D magnet valve described below is also manufactured and sold by Westinghouse Air Brake Technologies Corporation.
  • the N-7-D magnet valve consists of one 2-way Air Flow Management Valve, one 3-way Air Flow Management Valve, one 3-way Application Pilot Valve, and one 3-way Release Pilot Valve.
  • the operation cycle of the N-7-D Magnet Valve is described below:
  • the invention generally features a three-state magnet valve for control of fluid flow.
  • the three-state magnet valve has a means engageable with a source of fluid pressure for connecting the three-state magnet valve to a source of fluid pressure.
  • the three-state magnet valve also has an application pilot solenoid valve having a fluid connection to a source of fluid pressure and is electrically connectable to a control module.
  • the three-state magnet valve further has an application solenoid valve having a fluid connection to a source of fluid pressure and to an application pilot solenoid valve and a braking device.
  • the application solenoid valve is also electrically connectable to a control module.
  • the application solenoid valve is able to initiate a braking application upon receipt of a fluid signal from the application pilot solenoid valve and an electrical signal from a control module.
  • the three-state magnet valve further has a release pilot solenoid valve having a fluid connection to a source of fluid pressure and to the application solenoid valve and is electrically connectable to a control module.
  • the three-state magnet valve also has a release solenoid valve having a fluid connection to an exhaust to atmosphere and to the application solenoid valve and to the release pilot solenoid valve and to a braking device.
  • the release solenoid valve is electrically connectable to a control module.
  • the release solenoid valve is able to exhaust fluid pressure to atmosphere upon receipt of a fluid pressure signal from the release pilot solenoid valve and an electrical signal from a control module thereby exhausting fluid pressure from said braking device.
  • the invention generally features a method for wheel slip control using a three-state magnet valve.
  • the method is comprised of the steps of generating a signal in a control module and giving a command signal to at least one of a plurality of solenoid valves that allows a source pressure to be at least one of applied to, exhausted from and held stable at a braking device based on said signal generated.
  • FIG. 1 is an ANSI schematic of the operation of the presently preferred invention.
  • FIG. 2 is an ANSI schematic of the operation of the prior art R-10 Magnet Valve.
  • FIG. 3 is an ANSI schematic of the operation of the prior art N-7-D Magnet Valve.
  • a three state magnet valve constructed according to the presently preferred invention is generally indicated by reference numeral 10 .
  • the three state magnet valve 10 generally includes an application pilot solenoid valve 12 , a release pilot solenoid valve 14 , an application solenoid valve 16 , and a release solenoid valve 18 , a means engageable with a source of fluid supply 22 , a fluid connection 24 to a braking device, and an exhaust to atmosphere 26 .
  • FIG. 1 An ANSI schematic of the operation of the presently preferred invention is produced in FIG. 1 for reference.
  • the three state magnet valve 10 of the present invention consists of a means engageable with a source of fluid pressure 22 for connecting the three-state magnet valve to the source of fluid pressure, the means 22 preferably being a port.
  • the application pilot solenoid valve 12 has a fluid connection to the source of fluid pressure and is electrically connectable to a control module (not shown), the application pilot solenoid valve preferably being of the 3-way normally closed type.
  • the application solenoid valve 16 has a fluid connection to the source of fluid pressure, to the application pilot solenoid valve 12 , and to a braking device (preferably a brake cylinder, not shown), and is electrically connectable to a control module.
  • the application solenoid valve 16 is preferably of the 2-way normally closed type.
  • the application solenoid valve 16 is able to initiate a braking application by allowing source pressure to be transmitted to a fluid connection 24 to a braking device upon receipt of a fluid signal from the application pilot solenoid valve 12 , and an electrical signal from a control module.
  • the release pilot solenoid valve 14 has a fluid connection to the source of fluid pressure and to the application solenoid valve 16 and is electrically connectable to a control module.
  • the release pilot solenoid valve 14 is preferably of the 3-way normally open type.
  • the release solenoid valve 18 has a fluid connection to an exhaust to atmosphere 26 and to the application solenoid valve 16 and to the release pilot solenoid valve 14 and to the braking device and is electrically connectable to a control module.
  • the release pilot solenoid valve 14 is preferably of the 2-way normally open type.
  • the release solenoid valve 18 is able to exhaust fluid pressure to atmosphere upon receipt of a fluid pressure signal from the release pilot solenoid valve 14 and an electrical signal from a control module thereby exhausting fluid pressure from the braking device (not shown) through a fluid connection to an exhaust to atmosphere 26 .
  • Application pilot solenoid 12 and release pilot solenoid 14 are de-energized by a control module.
  • Source pressure then is allowed to enter the three state magnet valve 10 through the application pilot solenoid 12 and pilots the application solenoid 16 open.
  • the source pressure is allowed to flow to brake cylinder (not shown) through the fluid connection 24 to a braking device.
  • the application pilot solenoid 12 is energized by a control module, allowing the pilot pressure from application solenoid 16 to exhaust through the release solenoid 18 and its connection to an exhaust to atmosphere.
  • the application solenoid 16 in turn, closes and holds the pressure steady at the brake cylinder (not shown).
  • the release pilot solenoid 14 is energized by a control module, allowing pilot pressure to be supplied to the release solenoid 18 . This opens the release solenoid 18 , which exhausts brake cylinder (not shown) pressure through its connection to an exhaust to atmosphere. Energizing release pilot solenoid 14 also applies pilot pressure to the application solenoid 16 . This pilot pressure holds the application solenoid 16 closed, keeping the source pressure from exhausting to atmosphere.
  • the release pilot solenoid 14 is energized by a control module and application pilot solenoid 12 is not energized by a control module. In this state the pilot pressure would be holding the application solenoid 18 open initially, while the spring inside the release solenoid 18 is holding the release solenoid 18 closed. Then, after the control module energizes the release pilot solenoid 14 , pilot pressure forces the application solenoid 16 closed and the release solenoid 18 open. This allows the pressure in the brake cylinder (not shown) to be exhausted through the release solenoid and its connection to an exhaust to atmosphere, while keeping the source pressure from exhausting to atmosphere.

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Regulating Braking Force (AREA)
  • Magnetically Actuated Valves (AREA)
  • Fluid-Pressure Circuits (AREA)
US10/338,100 2003-01-07 2003-01-07 Three state magnet valve Abandoned US20040130207A1 (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US10/338,100 US20040130207A1 (en) 2003-01-07 2003-01-07 Three state magnet valve
CA002449757A CA2449757A1 (en) 2003-01-07 2003-11-18 Three state magnet valve
AU2004200038A AU2004200038A1 (en) 2003-01-07 2004-01-06 Three state magnet valve
JP2004001339A JP2004210278A (ja) 2003-01-07 2004-01-06 ３状態電磁弁
AT04290030T ATE375904T1 (de) 2003-01-07 2004-01-07 Dreizustandsmagnetventil
EP04290030A EP1437278B1 (en) 2003-01-07 2004-01-07 Three state magnet valve
DE602004009483T DE602004009483D1 (de) 2003-01-07 2004-01-07 Dreizustandsmagnetventil
MXPA04000112A MXPA04000112A (es) 2003-01-07 2004-01-07 Valvula magnetica de tres pasos.
BR0400104-4A BRPI0400104A (pt) 2003-01-07 2004-01-07 Válvula de ìmã de três estados
US11/107,357 US7222922B2 (en) 2003-01-07 2005-04-15 Three-state magnet valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/338,100 US20040130207A1 (en) 2003-01-07 2003-01-07 Three state magnet valve

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/107,357 Continuation-In-Part US7222922B2 (en) 2003-01-07 2005-04-15 Three-state magnet valve

Publications (1)

Publication Number Publication Date
US20040130207A1 true US20040130207A1 (en) 2004-07-08

Family

ID=32507447

Family Applications (2)

Application Number Title Priority Date Filing Date
US10/338,100 Abandoned US20040130207A1 (en) 2003-01-07 2003-01-07 Three state magnet valve
US11/107,357 Expired - Fee Related US7222922B2 (en) 2003-01-07 2005-04-15 Three-state magnet valve

Family Applications After (1)

Application Number Title Priority Date Filing Date
US11/107,357 Expired - Fee Related US7222922B2 (en) 2003-01-07 2005-04-15 Three-state magnet valve

Country Status (9)

Country Link
US (2) US20040130207A1 (pt)
EP (1) EP1437278B1 (pt)
JP (1) JP2004210278A (pt)
AT (1) ATE375904T1 (pt)
AU (1) AU2004200038A1 (pt)
BR (1) BRPI0400104A (pt)
CA (1) CA2449757A1 (pt)
DE (1) DE602004009483D1 (pt)
MX (1) MXPA04000112A (pt)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050236893A1 (en) * 2003-01-07 2005-10-27 Westinghouse Air Brake Technologies Three-state magnet valve
WO2016148802A1 (en) * 2015-03-19 2016-09-22 Westinghouse Air Brake Technologies Corporation Hot wheel protection valve
US9925969B2 (en) 2016-03-07 2018-03-27 Westinghouse Air Brake Technologies Corporation Cut-off valve and hot wheel protection valve arrangement
US10059320B2 (en) 2017-01-25 2018-08-28 Westinghouse Air Brake Technologies Corporation Automatic retainer valve
CN112519741A (zh) * 2020-08-11 2021-03-19 东风商用车有限公司 一种用于坡道起步的气制动辅助***
CN112672938A (zh) * 2018-09-11 2021-04-16 克诺尔轨道车辆***有限公司 均压阀

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016116516A1 (de) * 2016-09-05 2018-03-08 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Magnetventilvorrichtung für ein Bremssystem für ein Fahrzeug, Bremssystem für ein Fahrzeug und Verfahren zum Montieren einer Magnetventilvorrichtung für ein Bremssystem für ein Fahrzeug
DE102018127822A1 (de) * 2018-11-07 2020-05-07 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Ventilanordnung und ein Verfahren zur Drucksteuerung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3844623A (en) * 1972-02-21 1974-10-29 D Parsons Anti-skid control means for air pressure braking systems
US5123718A (en) * 1990-04-06 1992-06-23 G. W. Lisk Company, Inc. Valve for automatic brake system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3501179A1 (de) * 1985-01-16 1986-07-17 Wabco Westinghouse Fahrzeugbremsen GmbH, 3000 Hannover Elektrische bremsanlage
DE4016463A1 (de) * 1990-03-17 1991-09-19 Wabco Westinghouse Fahrzeug Bremsanlage mit wenigstens einem bremskreis
US6078204A (en) * 1996-12-19 2000-06-20 Texas Instruments Incorporated High current drain-to-gate clamp/gate-to-source clamp for external power MOS transistors
US6209971B1 (en) * 1998-06-30 2001-04-03 Alliedsignal Truck Brake Systems Company Non flow-through solenoid for heavy vehicle ABS modulators
US6520599B2 (en) * 2001-05-05 2003-02-18 Westinghouse Air Brake Technologies Corporation Four port variable load valve weigh system for a brake pipe controlled brake system
US20040130207A1 (en) * 2003-01-07 2004-07-08 Westinghouse Air Brake Technologies Three state magnet valve
US6746087B1 (en) * 2003-05-14 2004-06-08 New York Air Brake Corporation Electronic equalizing reservoir controller with pneumatic penalty override
US7020551B2 (en) * 2003-12-23 2006-03-28 Bendix Commercial Vehicle Systems Llc Roll stability control system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3844623A (en) * 1972-02-21 1974-10-29 D Parsons Anti-skid control means for air pressure braking systems
US5123718A (en) * 1990-04-06 1992-06-23 G. W. Lisk Company, Inc. Valve for automatic brake system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050236893A1 (en) * 2003-01-07 2005-10-27 Westinghouse Air Brake Technologies Three-state magnet valve
US7222922B2 (en) * 2003-01-07 2007-05-29 Wabtec Holding Corporation Three-state magnet valve
WO2016148802A1 (en) * 2015-03-19 2016-09-22 Westinghouse Air Brake Technologies Corporation Hot wheel protection valve
US10029666B2 (en) 2015-03-19 2018-07-24 Westinghouse Air Brake Technologies Corporation Hot wheel protection valve
US9925969B2 (en) 2016-03-07 2018-03-27 Westinghouse Air Brake Technologies Corporation Cut-off valve and hot wheel protection valve arrangement
US10059320B2 (en) 2017-01-25 2018-08-28 Westinghouse Air Brake Technologies Corporation Automatic retainer valve
CN112672938A (zh) * 2018-09-11 2021-04-16 克诺尔轨道车辆***有限公司 均压阀
CN112519741A (zh) * 2020-08-11 2021-03-19 东风商用车有限公司 一种用于坡道起步的气制动辅助***

Also Published As

Publication number Publication date
AU2004200038A1 (en) 2004-07-22
US7222922B2 (en) 2007-05-29
CA2449757A1 (en) 2004-07-07
EP1437278A1 (en) 2004-07-14
US20050236893A1 (en) 2005-10-27
MXPA04000112A (es) 2004-11-15
DE602004009483D1 (de) 2007-11-29
EP1437278B1 (en) 2007-10-17
BRPI0400104A (pt) 2004-12-28
JP2004210278A (ja) 2004-07-29
ATE375904T1 (de) 2007-11-15

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Legal Events

Date Code Title Description
AS Assignment

Owner name: WESTINGHOUSE AIR BRAKE TECHNOLOGIES, PENNSYLVANIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CORLEY, LEON W., JR.;REEL/FRAME:013655/0644

Effective date: 20030102

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION