EP2901058A2 - Électrovalve de dépression optimisée par transmission d'énergie par induction - Google Patents

Électrovalve de dépression optimisée par transmission d'énergie par induction

Info

Publication number
EP2901058A2
EP2901058A2 EP13841757.1A EP13841757A EP2901058A2 EP 2901058 A2 EP2901058 A2 EP 2901058A2 EP 13841757 A EP13841757 A EP 13841757A EP 2901058 A2 EP2901058 A2 EP 2901058A2
Authority
EP
European Patent Office
Prior art keywords
solenoid valve
vacuum solenoid
core
fix
fix core
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Withdrawn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
EP13841757.1A
Other languages
German (de)
English (en)
Other versions
EP2901058A4 (fr
Inventor
Kabir BHANDARI
Amardip KUMAR
Abhishek Kumar
Ravi GOSWAMI
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.)
Padmini VNA Mechatronics Pvt Ltd
Original Assignee
Padmini VNA Mechatronics Pvt Ltd
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 Padmini VNA Mechatronics Pvt Ltd filed Critical Padmini VNA Mechatronics Pvt Ltd
Publication of EP2901058A2 publication Critical patent/EP2901058A2/fr
Publication of EP2901058A4 publication Critical patent/EP2901058A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F16K31/0603—Multiple-way valves
    • F16K31/0606—Multiple-way valves fluid passing through the solenoid coil
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/029—Electromagnetically actuated valves
    • 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
    • F16K31/0603—Multiple-way valves
    • F16K31/0624—Lift valves
    • F16K31/0627—Lift valves with movable valve member positioned between seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
    • F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
    • F02M2025/0845—Electromagnetic valves

Definitions

  • the invention relates to an inductive energy optimized vacuum solenoid valve. More particularly, this invention relates to an improved design of a vacuum solenoid valve for optimization of switch off energy or inductive energy wherein the said valve is used in an electrical control unit (ECU) of a motor vehicle.
  • ECU electrical control unit
  • An Electrical Control Unit is meant for managing the engine system of a motor vehicle.
  • a vacuum solenoid valve is meant for responding to the ON/OFF signal from the ECU. When it is ON, a vacuum signal from the suction pipe or compressor outlet is fed into the valve actuator. The actuator is hard to open at this time. When the control unit sends an OFF signal, the solenoid coil pulls the plunger upward and cuts the route to the suction pipe. Therefore, a vacuum solenoid valve plays an important role in controlling air flow to achieve a particular pressure and to isolate vacuum volumes from pumps in a motor vehicle.
  • Vacuum solenoid valves operate on a digital principle. They, therefore, possess two distinct states; first, when the coil is activated by an electrical current, and second, when the valve is resting in the absence of electricity.
  • Vacuum solenoid valves are generally designed for those applications where reduced energy consumption is a determinant for operation or transmission of a device.
  • a short electrical impulse enables opening and closing of the solenoid valve, and due to the residual effects of a permanent magnet, this impulse is sufficient to maintain the valve in a particular working position with almost no electrical energy consumption.
  • the coil starts building a magnetic field induced current that is many times higher than the amount of provided current.
  • inrush current The initial current flow is called inrush current and the current that holds the armature in the energized position is called holding current.
  • inductive voltage is created within the device. This inductive voltage is called an inductive kick, is up to ten times the applied voltage and is in reverse polarity to the applied voltage.
  • a diode or other type of suppression device must be connected across the coil of the solenoid to protect any other electronic components in the circuit from being damaged by this voltage.
  • the solenoid coil When the solenoid coil is de-energized, the inductive voltage has opposite polarity to the power supply, so it flows through the diode and back into the coil. Since the coil is made of a large length of wire, the inductive voltage energy dissipates as it moves through the wire. This renders this excessive inductive voltage harmless. However, sometimes this inductive load may damage controlling devices due to high temperature variation during vehicle transmission or operation.
  • This inductive load cannot be lowered by any means beyond a certain minimum extent. And, it always remains within the vacuum solenoid valve in the form of inductive load.
  • Many vacuum solenoid valves are available in the prior art which claim to achieve an inductive voltage only till 20.42mJ at 26V, room temperature and 30.2mJ at 26V,-40°C. However, even this much amount of inductive load is sufficient to damage ECU and other electrical components of a motor vehicle. Therefore, there is a need to further minimize this inductive voltage to a very significant lowest point where the possibility of damage to the controlling units would be almost negligible at any sudden temperature variation during vehicle transmission or operation.
  • the main object of this invention is to provide an inductive energy optimized vacuum solenoid valve.
  • Yet another object of this invention is to optimize the inductive load in a vacuum solenoid valve.
  • Yet another object of this invention is to provide a system for controlling the inductive load in a motor vehicle.
  • Yet another object of this invention is to prevent the damage of controlling units from inductive kick in a vacuum solenoid valve.
  • Yet another object of this invention is to provide a reliable vacuum solenoid valve. Yet another object of this invention is to provide more efficient vacuum solenoid valve. Yet another object of this invention is to further minimize the inductive volt in a vacuum solenoid valve.
  • Yet another object of this invention is to increase the life of solenoid valve and electrical circuits of a motor vehicle.
  • Still another object of this invention is to provide a vacuum solenoid valve where the inductive voltage is optimized to less than or equal to about 24.7mJ at 26V, -40°C.
  • the present invention provides a vacuum solenoid valve which minimizes the switch off or inductive energy to such an extent so that it prevents sudden damage of an electric control unit in a motor vehicle from increased inductive load.
  • Inductive energy optimized vacuum solenoid valve is able to respond to the ON/OFF signal from the ECU at very low inductive load of 17.4mJ at 26V, RT and 24.7mJ at 26V, -40°C. This optimized inductive load is almost insufficient to damage the ECU or other electrical components on sudden increase or decrease in temperature in a motor vehicle parts.
  • the present invention thus combines the functions of vacuum flow control and damage control into a single unit which may be used in more efficient and effective ways over the existing devices.
  • the inductive energy optimized vacuum solenoid valve of the present invention utilizes a fix core and moving core geometry optimization which provides an improved reliability and lesser inductive load to prevent the damage of controlling units such as ECU in a motor vehicle.
  • the optimized vacuum solenoid valve comprises of a housing with a stationary fix core fixed into the said housing. This valve is electrically connected with the coil wire and with other terminal of the valve. This coil wire is wound on the bobbin.
  • This bobbin is made of a non-magnetic material and has a moving core fitting the stationary fix core therein.
  • a fix core insert along with spring housed in the moving core thereby forming a unit to maintain a constant distance between the said moving core and fix core.
  • At least one insert pin made up of non-magnetic material extends from the said fix core in a direction opposite to that of the said fix core insert.
  • the inner diameter of the said fix core of vacuum solenoid valve is optimized to a range of 2.5 mm to 4.75 mm so as to maintain the lowest inductive load in the said housing and ultimately minimize the switch off or inductive energy to such an extent so that it prevents sudden damage of an electric control unit in a motor vehicle from increased inductive load.
  • FIG. 1 is a sectional view showing a conventional vacuum solenoid valve
  • FIG. 2 is a sectional view showing vacuum solenoid valve according to this invention.
  • FIG. 3 is an exploded view of the vacuum solenoid valve according to this invention.
  • FIG. 4 is a sectional view of fix core assembly according to this invention.
  • FIG. 5 is an exploded view of fix core assembly according to this invention
  • FIG. 6a is a prospective view of moving core assembly according to this invention
  • FIG. 6b is a sectional view of moving core assembly according to this invention
  • FIG. 7 is a comparison chart of switch off energy at room temperature
  • FIG. 8 is a comparison chart of switch off energy at -40°C.
  • a housing 1 is made of a non-magnetic material and has a stationary fix core 10, a moving core 8, a coil wire 3, a bobbin 2 and a spring 9 built therein.
  • the housing 1 forms a mounting bracket 5 into which there are inserted a terminal 4 electrically connected with the coil wire 3 and the other terminal.
  • This coil wire 3 is wound on the bobbin 2.
  • the bobbin 2 is made of a nonmagnetic material and has a moving core 8 fitting the stationary fix core 10 therein.
  • the stationary fix core 10 has a fix core insert 11, into which there is inserted the spring 9 for urging a later-described moving core 8 away from the stationary fix core 10 at all times, and is fixed in the housing 1 by a moving core sub assembly 7.
  • a magnetic power acts upon the stationary fix core 10 so that the moving core 8 is attracted by the stationary fix core 10 to act in a direction.
  • the inner diameter of the said fix core 10 of the vacuum solenoid valve is optimized in a range of 2.5 mm to 4.75 mm as compared to convention fix core 10 as shown in FIG. 1 and to maintain the lowest inductive load in the said housing 1.
  • At least one insert pin 12 made up of non-magnetic material extends from the said fix core 10 in a direction opposite to that of the said fix core insert 11.
  • an exploded view of the vacuum solenoid valve having an insert pin 12 which is a separate part of the said fix core 10.
  • the insert pin 12 is made up of non magnetic material/metal/alloy which is selected from the non-limiting group of nylon, resin, plastic, Aluminium, Brass Tin, Indium, Stainless steel and alike.
  • FIG. 4 a sectional view of the fix core assembly having an insert pin 12 which is a separate part of the said fix core 10.
  • plurality of the said insert pin 12 is arranged over the circumference of the said fix core 10 and it extends from the said fix core 10 in a direction opposite to that of the said fix core insert 11.
  • FIG. 5 is showing an exploded view of the fix 1 core assembly in accordance with the present invention.
  • FIG. 6a & 6b are showing perspective and sectional view of the moving core assembly in accordance with the present invention.
  • the comparison chart of conventional solenoid valves with the present inductive energy optimized vacuum solenoid is tabulated wherein the inductive energy is optimized upto the level of 17.4 mJ at 26V, RT and 24.7 mj at 26V, - 40°C.
  • the present invention relates to an inductive energy optimized vacuum solenoid valve.
  • the optimized inductive energy is achieved through the geometry optimization of Fix Core and Moving Core of the vacuum solenoid valve.
  • the vacuum solenoid valve arranged in the vacuum line connecting the ECU device is controlled as a function of vacuum flow control during vehicle transmission.
  • the vacuum solenoid valve may be controlled as a function of damage control of the electrical components of the motor vehicle. Such control results in an interruption of the vacuum applied and generation of low switch off energy at the closing adjustment stage of the device in all operating states of the vehicle.
  • the inner diameter of fix core of the vacuum solenoid valve is increased to a certain extent (eg. 1.7 mm) and the length of suction pipe or insert pin is replaced by Aluminium pipe so that the vacuum flow control is maintained at its original position.
  • This optimization in the geometry of fixed core and moving core of vacuum solenoid valve permits the generation of low switch off energy during the operation of the vehicle in one of the aforementioned operating states--for example, changeover from one gear to another through the neutral shift position-without immediate closing of the solenoid valve.
  • this geometry optimization is provided to control the excessive inductive load within the vacuum solenoid valve during the vehicle transmission or operation.
  • This geometry optimization comprises a change in the inner diameter of the fix core and a replacement of insert pin with Aluminium metal.
  • the Aluminium metal insert pin is included as moving core to dissipate the switch off energy very quickly when the motor vehicle is in transmission or in operational stage.
  • the switch off energy has been calculated in various available vacuum solenoid valves such as Sample 1, Sample 2 and Sample 3 and is compared with the present invention device Gen.6.
  • the optimized inductive switch off energy of various devices is compared in table 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetically Actuated Valves (AREA)
  • Electromagnets (AREA)

Abstract

La présente invention se rapporte à une électrovalve de dépression qui minimise l'arrêt de la transmission d'énergie par induction de sorte à empêcher une détérioration soudaine d'un module de commande électrique dans un électrique à moteur à partir d'une charge inductive accrue. Une électrovalve de dépression optimisée par transmission d'énergie par induction, selon l'invention, est apte à répondre au signal marche/arrêt transmis par l'ECU à une charge inductive très faible de 17,4 mJ à 26 V, RT et 24,7 mJ à 26 V, -40°C. Ladite charge inductive optimisée est insuffisante pour endommager l'ECU ou d'autres composants électriques lors d'une élévation ou d'une diminution soudaine de la température dans les pièces d'un véhicule à moteur.
EP13841757.1A 2012-09-25 2013-09-24 Électrovalve de dépression optimisée par transmission d'énergie par induction Withdrawn EP2901058A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN2983DE2012 2012-09-25
PCT/IN2013/000574 WO2014049608A2 (fr) 2012-09-25 2013-09-24 Électrovalve de dépression optimisée par transmission d'énergie par induction

Publications (2)

Publication Number Publication Date
EP2901058A2 true EP2901058A2 (fr) 2015-08-05
EP2901058A4 EP2901058A4 (fr) 2016-07-13

Family

ID=50389085

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13841757.1A Withdrawn EP2901058A4 (fr) 2012-09-25 2013-09-24 Électrovalve de dépression optimisée par transmission d'énergie par induction

Country Status (2)

Country Link
EP (1) EP2901058A4 (fr)
WO (1) WO2014049608A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019183997A (ja) * 2018-04-13 2019-10-24 アイシン精機株式会社 流体制御弁および流路制御システム

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06137454A (ja) * 1992-10-27 1994-05-17 Mitsubishi Electric Corp 電磁弁
US5269333A (en) * 1993-04-22 1993-12-14 Emerson Electric Co. Anti-clog water valve
JPH0932959A (ja) 1995-07-20 1997-02-07 Aisin Seiki Co Ltd 電磁弁
JPH11287346A (ja) * 1998-04-03 1999-10-19 Ranco Japan Ltd ソレノイドバルブ
CN2446338Y (zh) * 2000-10-10 2001-09-05 隆门科技股份有限公司 电磁阀
JP4487845B2 (ja) 2005-05-02 2010-06-23 株式会社デンソー 電磁弁
CN2898470Y (zh) 2006-04-14 2007-05-09 比亚迪股份有限公司 真空电磁阀
JP4375436B2 (ja) 2007-05-24 2009-12-02 株式会社デンソー バルブ装置
CN102080612B (zh) * 2011-03-12 2012-07-04 无锡隆盛科技有限公司 一种真空电磁调节器

Also Published As

Publication number Publication date
EP2901058A4 (fr) 2016-07-13
WO2014049608A3 (fr) 2014-05-22
WO2014049608A2 (fr) 2014-04-03

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