EP0585526B1 - Elektromagnetisch betätigbares Ventil - Google Patents

Elektromagnetisch betätigbares Ventil Download PDF

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Publication number
EP0585526B1
EP0585526B1 EP93107039A EP93107039A EP0585526B1 EP 0585526 B1 EP0585526 B1 EP 0585526B1 EP 93107039 A EP93107039 A EP 93107039A EP 93107039 A EP93107039 A EP 93107039A EP 0585526 B1 EP0585526 B1 EP 0585526B1
Authority
EP
European Patent Office
Prior art keywords
closing member
valve
auxiliary
main
force
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.)
Expired - Lifetime
Application number
EP93107039A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0585526A1 (de
Inventor
Andreas Sausner
Sebastian Zabeck
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.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
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 Carl Freudenberg KG filed Critical Carl Freudenberg KG
Publication of EP0585526A1 publication Critical patent/EP0585526A1/de
Application granted granted Critical
Publication of EP0585526B1 publication Critical patent/EP0585526B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F02M25/0836—Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold

Definitions

  • the invention relates to an electromagnetically actuated valve for the timed feeding of volatile fuel components from the free space of a fuel tank into the intake pipe of an internal combustion engine, the valve being provided with at least one inlet opening and at least one outlet opening, a main valve seat and a between the inlet and outlet openings auxiliary valve seat connected in parallel with a corresponding main closing element and an auxiliary closing element are provided, the main closing element having a movable mass m I and the auxiliary closing element having a movable mass m II and the closing elements sealing the corresponding valve seats in the tension-free state by the force of at least one valve spring in each case touch and the main closing member upon actuation of a resulting force F resI and the auxiliary closing member of a resulting force F resII each in the open position are transferable.
  • Such a valve is known from DE-PS 40 03 036.
  • the auxiliary closing member is, based on the main closing member, of smaller size and mass, so that it can be brought into the open position more quickly and the main closing member can therefore be hydraulically relieved, so that the main closing member also has a higher opening speed. It should be noted, however, that cost-effective manufacture cannot be achieved simply by using a smaller mass of the auxiliary closing member. For an optimization of the valve with regard to its usage properties, the manufacturing effort and During assembly, a large number of parameters must be taken into account which, as a whole, lead to an inexpensive solution.
  • the invention has for its object to further develop an electromagnetically actuated valve of the type mentioned in such a way that, with good performance properties, it is easier and more economical to manufacture and the components used have a favorable influence on one another and are optimally coordinated with one another.
  • the valve is optimized in that the ratio of F resI / m I is smaller than the ratio of F resII / m II .
  • the magnetic circuit of the auxiliary valve has a faster or comparable force build-up speed than the main valve and / or the spring preload of the valve spring of the auxiliary valve is lower than that of the main valve in relation to the force build-up speed.
  • the valve cross section and thus the throughput can be greater than the valve cross section and thus the throughput of the auxiliary valve with the same pressure ratio of the main valve.
  • the auxiliary valve has a smaller or, in the limit case, the same opening cross section as the main valve, but opens earlier.
  • a lower armature mass, a lower armature stroke and a dynamic design of the magnetic circuit can be supported by low inductance and lower magnetic Resistors can be selected.
  • the main valve has the same or larger opening cross section than the auxiliary valve. Due to a lower force build-up speed and / or a higher spring preload, it opens later than the auxiliary valve. This can be supported by a dynamic design of the magnetic circuit, a larger opening cross-section, a larger armature mass and a larger armature stroke.
  • a simple and economically favorable valve can have an auxiliary closing member that has a lower inertial mass than the main closing member and / or the auxiliary valve seat can have a smaller opening cross section than the main valve seat. Interventions in the actuating mechanism of the valve are therefore unnecessary.
  • the main closing element and the auxiliary closing element can then be actuated by magnet coils connected in parallel.
  • the internal combustion engine 6 is connected to the air filter 18 through an intake pipe 5, which contains a throttle valve 17.
  • the exhaust manifold 19 is also flanged to the internal combustion engine 6.
  • a fuel supply device 20 is provided in the intake pipe 5 above the throttle valve 17, in which the fresh air volume supplied through the air filter 18 is mixed with fuel to the required extent.
  • the signals required for this are provided by the control unit 21, for example on the basis of the exhaust gas temperature and composition, the operating speed of the internal combustion engine 6 and the ambient temperature.
  • the corresponding input signals are detected using appropriate sensors and are indicated by the arrows 22, 23, 24, 25. If required, they can be supplemented to the desired extent.
  • the fuel tank 4 is only partially filled with liquid fuel and has a free space 3 above the fuel level, which is filled with volatile fuel components 2.
  • the closure 26 of the fuel tank 4 hermetically seals the same from the surroundings.
  • the free space 3 of the fuel tank 4 is connected to the atmosphere 28 through the ventilation line 27.
  • the vent line 27 contains the storage chamber 29, which is filled with granules of activated carbon. The dimensions of the storage chamber 29 are such that, under normal operating conditions, volatile fuel components cannot pass through the mouth of the vent line 27.
  • the line 30 On the side of the storage chamber 29 opposite the mouth of the ventilation line 27, the line 30 is connected, which connects the storage chamber 29 to the intake pipe 5 of the internal combustion engine 6.
  • the electromagnetically actuable valve 1 is arranged in the line 30, which valve is closed when the internal combustion engine 6 is shut down and can be actuated by the control unit 21, which is connected by an electrical connecting line 31 to the magnet coils 15, 16 of the main closing element 11 and auxiliary closing element 12.
  • the main closing element 11 can be brought into engagement with the main valve seat 9 and, when the valve 1 is not actuated, is placed on the valve seat under spring force by the valve spring 13 when the valve 1 is not actuated.
  • valve springs 13, 14 are each designed such that a sealing pressure of the valve closing members 11, 12 against the corresponding valve seats 9, 10 is just guaranteed.
  • the auxiliary closing element 12 opens earlier.
  • the mass of the volume flow implemented per unit of time can be changed as required by modifying the time period in which the main and auxiliary closing members 11, 12 are opened per activation.
  • the duration of the control also influences the operating behavior of the valve 1. At very high frequencies, it includes the case that the signal causing the electrical control in the connecting line has already decayed before the main closing element 12 responds, so that only the auxiliary closing element 12 comes into the open position during a particularly short period of time.
  • the volume of fuel vapors passed through is accordingly very particularly low, so that the volatile fuel constituents 2 can be disposed of from the storage chamber 29 into the internal combustion engine 6 even at low speeds, for example at idle speed, without the fuel / air mixture being over-greased and thus malfunctions Internal combustion engine 6 are to be feared.
  • the permeability of the valve 1 according to the invention can be changed continuously without requiring a special electrical control effort. In addition to particularly good operating behavior, excellent exhaust gas values can be ensured in the different operating states of the internal combustion engine 6.
  • the valve 1 according to the invention has good usage properties and is particularly economical in terms of economy and production technology.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Magnetically Actuated Valves (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Valve Device For Special Equipments (AREA)
  • Means For Warming Up And Starting Carburetors (AREA)
  • Supplying Secondary Fuel Or The Like To Fuel, Air Or Fuel-Air Mixtures (AREA)
EP93107039A 1992-09-01 1993-04-30 Elektromagnetisch betätigbares Ventil Expired - Lifetime EP0585526B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4229105A DE4229105C1 (enrdf_load_stackoverflow) 1992-09-01 1992-09-01
DE4229105 1992-09-01

Publications (2)

Publication Number Publication Date
EP0585526A1 EP0585526A1 (de) 1994-03-09
EP0585526B1 true EP0585526B1 (de) 1995-08-02

Family

ID=6466939

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93107039A Expired - Lifetime EP0585526B1 (de) 1992-09-01 1993-04-30 Elektromagnetisch betätigbares Ventil

Country Status (6)

Country Link
US (1) US5341787A (enrdf_load_stackoverflow)
EP (1) EP0585526B1 (enrdf_load_stackoverflow)
JP (1) JPH06159164A (enrdf_load_stackoverflow)
BR (1) BR9303048A (enrdf_load_stackoverflow)
CA (1) CA2105244C (enrdf_load_stackoverflow)
DE (2) DE4229105C1 (enrdf_load_stackoverflow)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2651782B2 (ja) * 1993-05-21 1997-09-10 京三電機株式会社 燃料タンクとインマニ間に配置される電磁弁
DE4400879C2 (de) * 1994-01-14 2003-02-13 Siemens Ag Drosselklappenstutzen
US6308690B1 (en) 1994-04-05 2001-10-30 Sturman Industries, Inc. Hydraulically controllable camless valve system adapted for an internal combustion engine
US5535725A (en) * 1994-09-19 1996-07-16 Hi-Stat Manufacturing Co., Inc. Flow control solenoid means
FR2727185A1 (fr) * 1994-11-17 1996-05-24 Sagem Allumage Clapet d'electrovanne et circuit de recyclage de vapeurs d'essence de moteur a combustion interne
US6167869B1 (en) * 1997-11-03 2001-01-02 Caterpillar Inc. Fuel injector utilizing a multiple current level solenoid
US5975053A (en) * 1997-11-25 1999-11-02 Caterpillar Inc. Electronic fuel injection quiet operation
US6000379A (en) * 1997-11-25 1999-12-14 Caterpillar Inc. Electronic fuel injection quiet operation
DE19937722A1 (de) * 1999-08-10 2001-02-15 Bosch Gmbh Robert Ventil zum dosierten Einleiten von verflüchtigtem Brennstoff in einen Ansaugkanal einer Brennkraftmaschine
US6425365B1 (en) 2000-10-20 2002-07-30 Ford Global Technologies, Inc. Internal combustion engine shutdown method and control system
US6866204B2 (en) * 2001-04-10 2005-03-15 Siemens Vdo Automotive Corporation End of valve motion detection for a spool control valve
US10851736B1 (en) * 2019-06-03 2020-12-01 Denso International America, Inc. Dual armature purge valve

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4944276A (en) * 1987-10-06 1990-07-31 Colt Industries Inc Purge valve for on board fuel vapor recovery systems
DE3802664C1 (enrdf_load_stackoverflow) * 1988-01-29 1988-10-13 Fa. Carl Freudenberg, 6940 Weinheim, De
DE3830722A1 (de) * 1988-09-09 1990-03-15 Freudenberg Carl Fa Vorrichtung zum dosierten einspeisen fluechtiger kraftstoffbestandteile in das ansaugrohr einer brennkraftmaschine
JPH0646017B2 (ja) * 1989-07-14 1994-06-15 株式会社日立製作所 内燃機関の制御装置
US5060621A (en) * 1989-08-28 1991-10-29 Ford Motor Company Vapor purge control system
DE4003036C1 (en) * 1990-02-02 1990-11-29 Fa. Carl Freudenberg, 6940 Weinheim, De Electromagnetic valve for IC engine - incorporates auxiliary valve element operated by separate spring
DE4008266A1 (de) * 1990-03-15 1991-09-19 Daimler Benz Ag Elektromagnetisches ventil
JP3173661B2 (ja) * 1990-12-28 2001-06-04 本田技研工業株式会社 内燃エンジンの蒸発燃料制御装置

Also Published As

Publication number Publication date
CA2105244C (en) 1999-06-15
US5341787A (en) 1994-08-30
DE4229105C1 (enrdf_load_stackoverflow) 1993-09-09
BR9303048A (pt) 1994-03-22
CA2105244A1 (en) 1994-03-02
JPH06159164A (ja) 1994-06-07
DE59300427D1 (de) 1995-09-07
EP0585526A1 (de) 1994-03-09

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