EP0484656B1 - Vorrichtung zum dosierten Einspeisen von verbrannten Gasen in den Brennraum einer Verbrennungskraftmaschine - Google Patents

Vorrichtung zum dosierten Einspeisen von verbrannten Gasen in den Brennraum einer Verbrennungskraftmaschine Download PDF

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Publication number
EP0484656B1
EP0484656B1 EP91115249A EP91115249A EP0484656B1 EP 0484656 B1 EP0484656 B1 EP 0484656B1 EP 91115249 A EP91115249 A EP 91115249A EP 91115249 A EP91115249 A EP 91115249A EP 0484656 B1 EP0484656 B1 EP 0484656B1
Authority
EP
European Patent Office
Prior art keywords
drive
actuating device
stop valve
valve
combustion engine
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
EP91115249A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0484656A2 (de
EP0484656A3 (en
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 EP0484656A2 publication Critical patent/EP0484656A2/de
Publication of EP0484656A3 publication Critical patent/EP0484656A3/de
Application granted granted Critical
Publication of EP0484656B1 publication Critical patent/EP0484656B1/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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D21/00—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
    • F02D21/06—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air
    • F02D21/08—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/52—Systems for actuating EGR valves
    • F02M26/64—Systems for actuating EGR valves the EGR valve being operated together with an intake air throttle
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/66—Lift valves, e.g. poppet valves
    • F02M26/67—Pintles; Spindles; Springs; Bearings; Sealings; Connections to actuators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F02D2009/0276—Throttle and EGR-valve operated together

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • Such a device is known from DE-OS 23 15 432. It is intended to reduce pollutant emissions from internal combustion engines and is characterized by a simple structure. It should be noted, however, that the operating behavior can change over a long period of use if the check valve shows signs of caking in the area of its sealing seat, which lead to a change in the opening cross section.
  • the invention has for its object to develop a device of the type mentioned in such a way that consistently good performance characteristics result over a long period of use with inexpensive manufacturability.
  • the opening characteristics of the shut-off valve must always be the same in long-term use.
  • the closing member is supported on the associated support part in a self-locking manner, but is displaceable in the opening direction, and / or that the valve seat is supported on the assigned support parts in a self-locking manner, but is displaceable against the opening direction of the closing member.
  • the valve seat can be formed, for example, by the end face of a tube which extends axially parallel to the direction of movement of the closing member and which is received in a self-locking manner in an enclosing bore by means of an elastic sealing element. Even if caking phenomena occur in the area of the end face, this always results in a matching opening cross-section, regardless of the period of use. A corresponding attachment is of course also possible on the part of the closing member. In this case, it is only necessary to design the closing element as such independently of its actual drive means and to fix it displaceably in accordance with the above statements.
  • the auxiliary drive of the valve can comprise a spring element in order to compensate for play of the actuating means used.
  • the spring is expedient designed as a compression spring and arranged so that it causes a transfer of the actuator of the valve into a closed position when relieved.
  • the actuating device of the valve can comprise a servo drive, which is controlled on the basis of an electrical, hydraulic or pneumatic coupling by the throttle valve or its drive means.
  • the control characteristic of the valve can be particularly easily adapted to special requirements of the application in such designs.
  • the auxiliary drive used in this case can comprise at least one servo motor which can be actuated by a signal, the servo motor being connected in a signal-conducting manner to a control unit determining the operating characteristics of the internal combustion engine. In this way, it can be achieved that there is an optimal activation of the check valve even if the actual operating data of the internal combustion engine deviate considerably from the normal conditions, which can be the case, for example, in the event of a malfunction.
  • the auxiliary drive can comprise an electromagnet. In such a case, it can be obtained inexpensively and is particularly easy to control.
  • the device can be manufactured and assembled inexpensively by the common actuating device. It is also characterized by excellent operational reliability, which surprisingly already results in a significant reduction in polluting exhaust gas emissions results if a supplementary use of electronic control devices is dispensed with. Use of the device according to the invention is therefore particularly recommended when equipping internal combustion engines in which greater attention is paid to the cost-effective availability of the required parts.
  • the design of the device depends largely on the design of the drive means of the shut-off valve and throttle valve.
  • the throttle valve is fixed non-rotatably on an actuating shaft and can be adjusted to the desired extent by a relative rotation of the actuating shaft.
  • check valves it is more common to achieve a change in the flow cross-section by a linear reciprocating movement of an actuator.
  • the joint actuation of such a check valve and such a throttle valve therefore requires the use of actuating means which are suitable for converting a reciprocating movement into a rotary movement.
  • a large number of mechanical aids are known in this regard.
  • the actuator of the valve By using a spindle drive, it is possible to arrange the actuator of the valve on an axis of movement which forms an extension of the axis of rotation of the throttle valve shaft.
  • the production is particularly simple and there is the further advantage that the housing of the valve can be attached in the immediate vicinity of the intake pipe and, if necessary, as an integral part of the same.
  • the actuating device is designed as a cam drive
  • a cam plate is expediently fastened interchangeably, which makes it possible to make an otherwise identical device usable for internal combustion engines of different sizes by simply exchanging the cam plate.
  • the actuating device can comprise a rack and pinion drive, which makes it possible to bridge large spatial distances between the throttle valve shaft and the actuator of the valve.
  • a similar advantage results in an embodiment in which the actuating device is formed by a connecting rod drive. In the latter case, the manufacturing costs are comparatively lower, but it is necessary to generate a static preload, for example by means of a compression spring, in order to suppress unwanted play.
  • Bowden cables enable the valve to be decoupled from the throttle valve shaft in terms of vibration. This improves durability.
  • cam drives is also possible.
  • the drive device of the check valve can be provided with a device for relatively delayed opening and for throttle valve-synchronous closing.
  • a device for relatively delayed opening and for throttle valve-synchronous closing can be formed, for example, by an asymmetrical fluid damper.
  • Corresponding fluid dampers are known per se. They are used, for example, in the area of wheel suspension in motor vehicles.
  • the sketch shows a schematic representation of a device for the metered introduction of combustion gases into the combustion chamber of an internal combustion engine 22 with an intake manifold 6, in which a throttle valve 3 is arranged and an exhaust pipe 23, the intake pipe 6 and the exhaust pipe 23 through a line 20 with a check valve 1 contained therein are connected and wherein the check valve 1 and the throttle valve 3 drive means are assigned to transfer to an open position.
  • a throttle valve 3 is arranged in the intake pipe 6 and is fixed non-rotatably on the outer circumference of a throttle valve shaft 14.
  • the throttle valve shaft 14 is provided outside the intake pipe 6 with a ring gear which is in engagement with a rack 16.
  • a cam 17 is attached on the rack 16, a cam 17 is attached. This is provided with a cam track 13, which is in engagement with a roller 25 of the actuator 15 of the check valve 1.
  • the pressure of the roller 25 against the cam track 13 causes a pressure spring 10, which is supported on the one hand on a projection of the actuator 15 projecting outward in the radial direction and on the other hand on a component of the housing 11 of the check valve 1.
  • the closing member 29 of the check valve 1 is thereby automatically transferred to an open position when the actuating linkage 12 is displaced relative to the left.
  • it reaches an open position in a defined manner, whereby an amount of exhaust gas of a defined size is transferred from the exhaust pipe 23 into the intake pipe 6 per unit time.
  • the ratio of the mixture of fresh and exhaust gases supplied to the internal combustion engine 22 per unit of time through the intake pipe 6 can hereby be changed as required.
  • the associated embodiment is provided in the exemplary embodiment shown To support the closing member 29 and the associated valve seat 28 in the opening direction, but displaceably on the associated supporting parts.
  • the closing member 29 is supported by means of elastically deformed sealing rings 26 made of heat-resistant material on a column-shaped section of the actuator 15 extending parallel to the opening direction, and the valve seat 28 formed by the end face of a tube in the same way by means of two elastic sealing rings 27 in a parallel to the Opening direction extending bore of the housing 11.
  • an auxiliary drive 4 is provided for the check valve 1.
  • This consists of an electromagnet supported on the toothed rack 16, which is connected to the cam disk 17 and makes it possible to move it parallel to the longitudinal direction of the toothed rack 16, depending on special circumstances, and in this way the opening characteristic of the check valve 1 with respect to the throttle valve 3 to change and adapt to special circumstances.
  • This possibility is of great advantage in order to achieve optimal operating behavior. It may be dispensed with and the cam plate is rigidly attached to the rack 16 in this case.
EP91115249A 1990-11-06 1991-09-10 Vorrichtung zum dosierten Einspeisen von verbrannten Gasen in den Brennraum einer Verbrennungskraftmaschine Expired - Lifetime EP0484656B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4035176 1990-11-06
DE4035176A DE4035176C3 (de) 1990-11-06 1990-11-06 Vorrichtung zum dosierten Einspeisen von verbrannten Gasen in den Brennraum einer Verbrennungskraftmaschine

Publications (3)

Publication Number Publication Date
EP0484656A2 EP0484656A2 (de) 1992-05-13
EP0484656A3 EP0484656A3 (en) 1992-07-29
EP0484656B1 true EP0484656B1 (de) 1994-11-30

Family

ID=6417694

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91115249A Expired - Lifetime EP0484656B1 (de) 1990-11-06 1991-09-10 Vorrichtung zum dosierten Einspeisen von verbrannten Gasen in den Brennraum einer Verbrennungskraftmaschine

Country Status (6)

Country Link
US (1) US5213087A (ja)
EP (1) EP0484656B1 (ja)
JP (1) JP2566080B2 (ja)
AT (1) ATE114783T1 (ja)
DE (2) DE4035176C3 (ja)
ES (1) ES2064844T3 (ja)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4229110C1 (de) * 1992-09-01 1993-10-07 Freudenberg Carl Fa Vorrichtung zum vorübergehenden Speichern und dosierten Einspeisen von im Freiraum einer Tankanlage befindlichen flüchtigen Kraftstoffbestandteilen in das Ansaugrohr einer Verbrennungskraftmaschine
DE4333295A1 (de) * 1993-09-30 1995-06-14 Bosch Gmbh Robert Vorrichtung zur Steuerung von Abgasrückführmengen
US6095123A (en) * 1999-01-11 2000-08-01 Ford Global Technologies, Inc. Valve and valve control method
US6390079B1 (en) * 2000-08-21 2002-05-21 Siemens Canada Limited Exhaust gas recirculation valve including cam linkage for converting constant angular motion to non-linear motion
EP1270924A3 (en) * 2001-06-28 2004-01-07 Delphi Technologies, Inc. Integrated intake manifold assembly for an internal combustion engine
JP4015889B2 (ja) * 2002-06-28 2007-11-28 株式会社豊田自動織機 内燃機関のｅｇｒ制御装置
JP4196837B2 (ja) * 2004-01-15 2008-12-17 トヨタ自動車株式会社 内燃機関の制御装置
DE102004060842A1 (de) * 2004-12-17 2006-06-29 Deutz Ag Mechanische AGR-Steuerung für Saugdieselmotoren
US7069919B1 (en) * 2005-01-06 2006-07-04 Caterpillar Inc Method and apparatus for controlling the ratio of ambient air to recirculated gases in an internal combustion engine
DE602005007172D1 (de) * 2005-01-31 2008-07-10 Kwang Yang Motor Co Abgasrückführventil für ein Fahrzeug
US7237531B2 (en) * 2005-06-17 2007-07-03 Caterpillar Inc. Throttle and recirculation valves having a common planetary drive
JP5287953B2 (ja) * 2011-04-27 2013-09-11 株式会社デンソー 低圧ｅｇｒ装置
FR3044360B1 (fr) * 2015-11-30 2019-08-23 Valeo Systemes Thermiques Systeme et procede permettant de desactiver au moins un cylindre d'un moteur, collecteur d'admission et echangeur de chaleur comprenant ledit systeme

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1262252A (en) * 1969-01-20 1972-02-02 Nissan Motor Exhaust recirculation system for motor vehicles
CA927231A (en) * 1970-06-04 1973-05-29 F. Thornburgh William Exhaust gas recirculation
US3621825A (en) * 1970-07-27 1971-11-23 Ford Motor Co Exhaust gas recirculation control valve
JPS5122563B2 (ja) * 1972-03-02 1976-07-10
JPS5429652B2 (ja) * 1972-08-31 1979-09-25
JPS49111034A (ja) * 1973-02-23 1974-10-23
DE2315432A1 (de) * 1973-03-28 1974-10-10 Volkswagenwerk Ag Einrichtung zur verringerung der schadstoffemission von brennkraftmaschinen
JPS5256808Y2 (ja) * 1973-06-20 1977-12-22
US4005692A (en) * 1973-07-05 1977-02-01 Toyota Jidosha Kogyo Kabushiki Kaisha Carburetor arranged for recirculating exhaust gases
JPS50102725A (ja) * 1974-01-23 1975-08-14
US3989018A (en) * 1974-02-15 1976-11-02 Volkswagenwerk Aktiengesellschaft Exhaust gas recycling apparatus
DE2529208C2 (de) * 1975-07-01 1985-07-11 Robert Bosch Gmbh, 7000 Stuttgart Vorrichtung zur Regelung der Menge von zur Saugseite einer Brennkraftmaschine rückgeführten Abgas
US4149503A (en) * 1976-10-01 1979-04-17 Nippon Soken, Inc. Exhaust gas recirculation system for an internal combustion engine
JPS5367024A (en) * 1976-11-25 1978-06-15 Mitsubishi Motors Corp Exhaust gas reflux device
JPS53109018A (en) * 1977-03-04 1978-09-22 Mitsubishi Motors Corp Suction control device
JPS54141924A (en) * 1978-04-25 1979-11-05 Aisan Ind Co Ltd Exhaust gas recycling device
DE2823671A1 (de) * 1978-05-31 1979-12-06 Bosch Gmbh Robert Einrichtung zur abgasrueckfuehrung
JPS5510013A (en) * 1978-07-06 1980-01-24 Toyota Motor Corp Division-operation controlled multi-cylinder internal combustion engine
JPS5523314A (en) * 1978-08-02 1980-02-19 Toyota Motor Corp Apparatus for controlling re-circulation of exhaust gas discharged from engine
JPS5542260A (en) * 1978-09-19 1980-03-25 Fuji Titan Kogyo Kk Production of alpha-type hemihydrate gypsum from gypsum
JPS57193751A (en) * 1981-05-25 1982-11-29 Mikuni Kogyo Co Ltd Egr valve and its control method
US4479473A (en) * 1983-01-10 1984-10-30 Ford Motor Company Diesel engine emission control system
SE450147B (sv) * 1985-10-31 1987-06-09 Electrolux Ab Gasregleringsanordning
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US4924840A (en) * 1988-10-05 1990-05-15 Ford Motor Company Fast response exhaust gas recirculation (EGR) system

Also Published As

Publication number Publication date
ATE114783T1 (de) 1994-12-15
EP0484656A2 (de) 1992-05-13
US5213087A (en) 1993-05-25
DE4035176C3 (de) 1997-11-13
JP2566080B2 (ja) 1996-12-25
JPH04265454A (ja) 1992-09-21
DE4035176C2 (ja) 1992-08-27
EP0484656A3 (en) 1992-07-29
ES2064844T3 (es) 1995-02-01
DE59103681D1 (de) 1995-01-12
DE4035176A1 (de) 1992-05-07

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