EP1536995A1 - Elektromagnetventil - Google Patents

Elektromagnetventil

Info

Publication number
EP1536995A1
EP1536995A1 EP03790852A EP03790852A EP1536995A1 EP 1536995 A1 EP1536995 A1 EP 1536995A1 EP 03790852 A EP03790852 A EP 03790852A EP 03790852 A EP03790852 A EP 03790852A EP 1536995 A1 EP1536995 A1 EP 1536995A1
Authority
EP
European Patent Office
Prior art keywords
valve
closing member
pressure
valve closing
electromagnetic
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Withdrawn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
EP03790852A
Other languages
German (de)
English (en)
French (fr)
Inventor
Frank Trautmann
Dirk Dobberan
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.)
Continental Teves AG and Co OHG
Original Assignee
Continental Teves AG and Co OHG
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 DE10300414A external-priority patent/DE10300414A1/de
Application filed by Continental Teves AG and Co OHG filed Critical Continental Teves AG and Co OHG
Publication of EP1536995A1 publication Critical patent/EP1536995A1/de
Withdrawn legal-status Critical Current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
    • B60T8/32—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
    • 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
    • B60T8/3615—Electromagnetic valves specially adapted for anti-lock brake and traction control systems
    • B60T8/363—Electromagnetic valves specially adapted for anti-lock brake and traction control systems in hydraulic 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
    • B60T8/42—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
    • B60T8/4275—Pump-back systems
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K29/00—Arrangements for movement of valve members other than for opening and closing the valve, e.g. for grinding-in, for preventing sticking
    • 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
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0686—Braking, pressure equilibration, shock absorbing
    • F16K31/0693—Pressure equilibration of the armature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/4238—With cleaner, lubrication added to fluid or liquid sealing at valve interface
    • Y10T137/4245—Cleaning or steam sterilizing
    • Y10T137/4273—Mechanical cleaning

Definitions

  • the invention relates to an electromagnetic valve according to the preamble of claim 1.
  • Proportionalized solenoid valves are already known which, in contrast to conventional, binary-switching solenoid valves, are not actuated in a pulse-like manner, but instead have a damped, continuous movement of the valve closing element without generally exhausting the constructively possible overall stroke of the valve closing element.
  • This well-dosed, control-technically "soft” coordinated proportional operation cannot rule out the accumulation of dirt particles in the area of the valve seat and the valve closing element, which may impair both the operation of the solenoid valve and the system connected to it.
  • a solenoid valve of the proportional type becomes described for example in DE 196 538 95 AI.
  • FIG. 1 shows an overall view of a solenoid valve which is open in the normal position and is in the normally open position and which is designed as a two-way seat valve, with a cartridge-shaped valve housing 8 which has a spherically shaped valve closing element 9 on a stepped valve tappet 1.
  • the valve tappet 1 contacts a cylindrical magnet armature 10.
  • the valve closing element 9 is directed towards a tubular valve seat 2, while the magnet armature 10 faces the magnetic core 11 integrated in the valve housing 8.
  • a sleeve 12, preferably manufactured using the deep-drawing process, is fastened to the magnetic core 11, in which the armature 10 can align and move axially.
  • a valve coil 13 is arranged on the circumference of the sleeve 12 and is embedded between a yoke plate 16 and a magnetic disk 17.
  • the magnet armature 10 arrives in the direction of the magnetic core 11 during the energization of the valve coil 13, so that the valve closing member 9 formed on the valve tappet 1 counteracts the action of a valve spring 4 arranged between the valve tappet 1 and the valve seat 2 which is open in the basic position Pressure medium connection between a pressure medium inlet and a pressure medium outlet channel 14, 15 is continuously reduced.
  • valve seat body 2 and the valve body In order to be able to maintain a proportional control, a defined geometric design of the valve seat body 2 and the valve body is required in the present exemplary embodiment. 1.
  • the valve closing member 9 on the valve tappet 1 has a preferably spherical contour with a diameter of 1.8 to 2.2 millimeters. This corresponds to a sealing diameter on the valve seat of 0.9 to 1.1 millimeters.
  • the valve seat angle is 120 degrees. Compliance with the aforementioned dimensions and the purity of the components is therefore of particular importance.
  • the electromagnetic valve is provided as an inlet valve for use in slip-controlled motor vehicle brake systems, the valve closing member 9 of which is lifted from the valve seat body 2 in the basic position by means of the valve spring 4 arranged between the valve tappet 1 and the valve seat body 2.
  • valve coil 13 can be controlled with an electric current such that the valve closing member 9 hits the valve seat 2 with a sufficiently large impulse force outside of the proportional actuation .
  • the power of the electric current is to be dimensioned in such a way that the valve closing member 9 executes its maximum stroke in a pulsed manner and hits the valve seat 2 with a corresponding strength.
  • the power selection of the electric current is made as a function of the degree of contamination, that is to say essentially according to the amount of the deposit, which influences the pressure profile within the valve. Therefore, to remove dirt deposits on the valve seat 2 and / or on the valve closing member 9 at intervals in which there is no proportional valve actuation, the valve coil 9 is supplied with a sufficiently high current which causes the normally inactive valve closing member 9 to impinge on the valve seat 2 continuously or discontinuously with an impulse force which destroys the deposits.
  • This measure is particularly effective when the fluid pressure at the valve closing element 9 is a minimum, so that the valve closing element 9 strikes the valve seat 2 with the maximum stroke and the maximum speed with the lowest hydraulic resistance. Even the most stubborn dirt deposits can be removed from the valve seat 2 as well as from the valve closing member 9 and, if necessary, removed by repeating the measure described above several times.
  • Rinsing of loosened dirt deposits from the area of valve seat 2 and valve closing member 9 is best carried out in time phases in which the fluid pressure in the valve is a maximum.
  • the valve closing member 9 is then switched to a position in which it releases the maximum cross section of the valve opening for the purpose of optimum flushing action.
  • valve spool 9 is actuated with the impulse force releasing the dirt deposits at the latest when a leak occurs in the valve closed position.
  • means are provided which, in the closed valve position, detect the pressure of the fluid upstream and downstream of the valve closing member 9 or valve seat 2. From the measurement of the hydraulic pressure, it can be concluded that the pressure change is representative of the valve leakage.
  • Pressure sensors 6 are arranged upstream and downstream of the valve closing element 9, which are connected to an electronic controller 20 which controls the valve coil 13 in order to evaluate the pressure sensor signals representative of the pressure change at the valve closing element 9.
  • a pressure model is stored in the electronic controller 20, which enables a comparison of the target pressure with the impermissible pressure deviation due to the valve contamination, for which purpose the controller 20 is provided with a suitable evaluation circuit.
  • a tandem master cylinder is connected to the pressure medium inlet channel 14 of the electromagnetic valve shown in FIG. 1 as the brake pressure transmitter 3.
  • the pressure medium outlet channel 15 of the electromagnetic valve connects to a wheel brake 5.
  • a return line provided with an outlet valve 7, which according to the return principle is provided with a low-pressure accumulator 18 and a pump 19.
  • the return line is connected to the pressure medium inlet channel 14.
  • the hydraulic circuit shown is of a fundamental nature and serves for general explanation. Deviations from this are possible.
  • the electromagnetic valve is operated in principle in a brake pressure control by a proportional or analog control method programmed in the controller 20, so that it is sensitive to the pressure metering by means of different control currents releases the desired valve cross section.
  • the solenoid valve is in accordance with the diagram shown inserted into a brake pressure line of a slip-controlled motor vehicle brake system that connects the brake pressure transmitter 3 to the wheel brake 5, so that, as an alternative to pressure sensing by means of the pressure sensors 6, suitable software can be used to detect the valve leakage by means of a corresponding pressure model in the controller 20.
  • the pressure model takes into account the change in pressure in the wheel brake 5 and in the brake pressure transmitter 3 as a result of the leakage. Under certain conditions, the pressure sensor system can be dispensed with by using a pressure model.
  • the pressure model representative of the changed pressure curve in the wheel brake 5 is calculated depending on the vehicle and brake-specific parameters. This includes information on the vehicle deceleration, the upstream pressure in the brake pressure sensor, and the brake pressure build-up and brake pressure reduction characteristics depending on the deposits in the valve. For example, the print model takes into account the change in the brake pressure build-up gradient in the event of deposits in the valve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • Magnetically Actuated Valves (AREA)
  • Regulating Braking Force (AREA)
EP03790852A 2002-08-27 2003-08-04 Elektromagnetventil Withdrawn EP1536995A1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10239124 2002-08-27
DE10239124 2002-08-27
DE10300414A DE10300414A1 (de) 2002-08-27 2003-01-09 Elektromagnetventil
DE10300414 2003-01-09
PCT/EP2003/008612 WO2004020263A1 (de) 2002-08-27 2003-08-04 Elektromagnetventil

Publications (1)

Publication Number Publication Date
EP1536995A1 true EP1536995A1 (de) 2005-06-08

Family

ID=31979455

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03790852A Withdrawn EP1536995A1 (de) 2002-08-27 2003-08-04 Elektromagnetventil

Country Status (4)

Country Link
US (1) US7165754B2 (ja)
EP (1) EP1536995A1 (ja)
JP (1) JP4575170B2 (ja)
WO (1) WO2004020263A1 (ja)

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US7963324B2 (en) 2004-12-03 2011-06-21 Schlumberger Technology Corporation Flow control actuation
JP4639813B2 (ja) * 2005-01-20 2011-02-23 トヨタ自動車株式会社 液圧制御装置および作動特性取得装置
DE102005051937A1 (de) * 2005-10-29 2007-05-03 Pierburg Gmbh Schubumluftventilvorrichtung für eine Brennkraftmaschine
JP4698563B2 (ja) * 2006-11-30 2011-06-08 リンナイ株式会社 モータ安全弁の制御方法
JP4698562B2 (ja) * 2006-11-30 2011-06-08 リンナイ株式会社 モータ安全弁の制御方法
KR101197476B1 (ko) 2008-07-02 2012-11-09 주식회사 만도 브레이크 시스템용 솔레노이드밸브
WO2010141733A1 (en) * 2009-06-03 2010-12-09 Eaton Corporation Fluid device with magnetic latching valves
JP5271216B2 (ja) * 2009-09-17 2013-08-21 日立オートモティブシステムズ株式会社 ノーマルオープン型電磁弁
DE102009055365A1 (de) * 2009-12-29 2011-06-30 Robert Bosch GmbH, 70469 Magnetventil sowie Fahrerassistenzeinrichtung
US9453585B2 (en) * 2011-11-04 2016-09-27 Toyota Jidosha Kabushiki Kaisha Electromagnetic linear valve
WO2013147249A1 (ja) * 2012-03-30 2013-10-03 日信工業株式会社 ブレーキ液圧装置
CN102720715B (zh) * 2012-05-31 2015-06-03 绍兴文理学院 一种利用电磁吸力修复电液比例阀卡紧故障的方法
CN102720713B (zh) * 2012-05-31 2016-02-03 绍兴文理学院 一种利用电磁吸力修复卡紧故障的电液比例阀
CN102734243B (zh) * 2012-06-08 2014-08-13 绍兴文理学院 一种可检测并修复卡紧故障的液压阀
DE102012106682A1 (de) * 2012-07-24 2014-02-13 Dorma Gmbh + Co. Kg Verfahren und Vorrichtung zum Herstellen eines Ventils
DE102012223172A1 (de) 2012-12-14 2014-07-03 Robert Bosch Gmbh Mini ESP mit externem Speicher
KR101488163B1 (ko) * 2013-03-19 2015-02-03 주식회사 만도 유압 제어 장치 및 그 유압 제어 방법
KR101617802B1 (ko) * 2014-10-30 2016-05-03 현대모비스 주식회사 감압 솔레노이드 밸브
DE202015101759U1 (de) * 2015-04-10 2016-07-13 Bürkert Werke GmbH Ventillinearantrieb sowie Ventil

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Also Published As

Publication number Publication date
US20060163511A1 (en) 2006-07-27
JP4575170B2 (ja) 2010-11-04
WO2004020263A1 (de) 2004-03-11
JP2005537187A (ja) 2005-12-08
US7165754B2 (en) 2007-01-23

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