EP3728823A1 - Regelvorrichtung für eine verbrennungskraftmaschine - Google Patents
Regelvorrichtung für eine verbrennungskraftmaschineInfo
- Publication number
- EP3728823A1 EP3728823A1 EP18815991.7A EP18815991A EP3728823A1 EP 3728823 A1 EP3728823 A1 EP 3728823A1 EP 18815991 A EP18815991 A EP 18815991A EP 3728823 A1 EP3728823 A1 EP 3728823A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control
- exhaust gas
- control device
- protective
- control body
- 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- Withdrawn
Links
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
- 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
- F02M26/70—Flap valves; Rotary valves; Sliding valves; Resilient valves
-
- 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
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
- F02M26/18—Thermal insulation or heat protection
-
- 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
- F02M26/74—Protection from damage, e.g. shielding means
-
- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
-
- 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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
- F16K11/044—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
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- 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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
- F16K11/052—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with pivoted closure members, e.g. butterfly valves
Definitions
- the invention relates to a control device for an internal combustion engine having an intake passage with an inlet and an outlet, an exhaust gas recirculation passage, which opens into the intake passage, a control body, a mouth of the exhaust gas recirculation passage, which serves as a fixed valve seat for the control body in the exhaust gas recirculation passage occluding state Serving as a rotation axis of the control body shaft to which the control body is mounted eccentrically, wherein the control body by rotation of the shaft between a first end position in which the control body at least throttles the intake passage, and a second end position in which the control body on the valve seat on the Mouth of the exhaust gas recirculation passage rests, is movable, a protective body, which is arranged opposite to a front side of the control body, which is turned in the second end position of the control body to the exhaust gas recirculation passage.
- Such control devices are for example a combination of a throttle valve and an exhaust gas recirculation valve, and are used in internal combustion engines to regulate the ratio of recirculated exhaust gas amount to intake air in the intake passage of a compressor of the internal combustion engine.
- a control body is provided, which between a first end position, in which the control body at least throttles an intake passage, and a second end position, in which the control body closes an exhaust gas recirculation passage, is movable.
- a control device which has a arranged on the control body protective body.
- the protective body is arranged on a front side of the control body, which in the second end position of the control body for
- Exhaust gas recirculation channel is turned.
- the protective body is formed of a water-storing material and stores on the control body condensing water, so that no condensed water is sucked into the intake passage.
- the stored water is evaporated by hot exhaust gases, leaving the water-storing protective body receptive.
- the water-storing material is added by particles in the exhaust gas, for example soot particles.
- the absorption capacity of the water-storing material is significantly reduced, so that an intake of condensed water in the intake channel can not be reliably avoided. It is therefore the object to provide a control device for an internal combustion engine, with which over the entire service life a condensation on the control body can be reliably prevented. This object is achieved by a control device for an internal combustion engine with the features of the main claim 1.
- a thermally insulating gap is formed between a rear side of the protective body facing the control body and the front side of the control body, a heat exchange between the prevents cold body rule and arranged on the side facing away from the inlet back of the body protection body.
- the protective body flowed by the exhaust gas thus always has a sufficiently high temperature in order to reliably prevent condensation on the protective body.
- the protective body also prevents a direct flow against the cold control body with warm exhaust gas, so that only the warm protective body is flowed through by the exhaust gas. The control device according to the invention thus reliably prevents condensation over the entire service life on the control body.
- the protective body covers the front of the control body almost completely. As a result, the formation of condensation on the entire rule is prevented body front.
- the gap between the control body and the protective body is a closed space.
- the protective body is attached to the control body and has on the back of the control body facing a recess which forms the thermally insulating gap.
- This allows a simple design of the thermally insulating gap in the form of a closed space.
- the arrangement of the protective body on the control body allows a simple and reliable attachment of the protective body.
- the protective body consists of a plastic which has a low thermal conductivity. As a result, cooling of the protective body and thus the formation of condensation on the protective body is particularly reliably avoided.
- the low thermal conductivity of the plastic prevents cooling of the protective body in contact with the cold body. This allows large contact surfaces between the body and body protection and thus allows a simple and reliable attachment of the protective body on the body.
- control body on a single control valve on which the protective body is arranged wherein the protective body has a recess in a contact region of the control valve with the valve seat.
- the control body on a valve body via which the intake passage is at least throttled and has a valve body, which is lowered onto the valve seat at the mouth of the exhaust gas recirculation passage. This makes it possible to adjust the closure body according to the flow cross-sections and the valve seat geometries of the intake passage and the exhaust gas recirculation passage.
- the valve body can be arranged tiltable, whereby a particularly reliable sealing of the exhaust gas recirculation channel is made possible.
- the protective body is arranged on the flap body and has a recess for a fastening element, via which the valve body is attached to the flap body.
- control body has at least one bore and the protective body at least one corresponding pin, which projects through the bore of the control body, wherein the protective body is fixed by forming, for example by means of hot caulking, the pin to the control body.
- the shaft is mounted in the intake duct upstream of the mouth of the exhaust gas recirculation channel, so that a direct influx of the protective body is avoided with cold air.
- the shaft is arranged outside the flow cross-section of a first upstream channel portion of the intake duct. This minimizes the pressure loss in the intake passage with the exhaust gas recirculation channel closed.
- the first upstream channel portion is limited by a flap seat against which the flap body of the control body in the first end position abuts circumferentially in a position completely closing the intake passage. This allows complete closure of the intake duct.
- Figure 1 shows a side view of a first embodiment of a control device according to the invention in a sectional view
- FIG. 2 shows a side view of a second embodiment of a control device according to the invention in a sectional view.
- 1 shows a control device 10 according to the invention with a housing 12, which has an intake passage 14 with an inlet 16 and an outlet 18 and into which an exhaust gas recirculation passage 20 opens.
- air flows into the intake passage 14
- exhaust gas flows into the intake passage 14 through an orifice 22 of the exhaust gas recirculation passage 20.
- the intake passage 14 extends substantially straight along a Ansaugkanalffenachse 24.
- the exhaust gas recirculation passage 20 opens substantially perpendicular to the intake passage 14 in this, so that the AbgasschreibGermankanalstoffachse 25 of the exhaust gas recirculation passage 20 is substantially perpendicular to the Ansaugkanalstoffachse 24.
- the housing 12 is made of a plurality of parts and comprises a substantially tubular first housing part 26, which forms an upstream air supply section 28 of the intake passage 14 and whose downstream Heilzuchtabitesende 29 is formed obliquely with respect to the Ansaugkanalffenachse 24.
- the first housing part 26 is inserted with the downstream Heilzuchtabêtende 29 to bear a flange 30 in a second housing part 32 and secured by screws thereto.
- the second housing part 32 forms a mixing section 34 of the intake duct 14 and has an opening 36, which is located just behind the downstream Heilzubowabexcellent 29. In the opening 36 is outside the
- a third housing part 38 is arranged, which forms the mouth 22 of the exhaust gas recirculation passage 20.
- a shaft 40 is rotatably arranged, which can be actuated via a non-visible actuator.
- the shaft 40 is arranged with its axis of rotation 42 perpendicular to the central axes 24,25.
- the shaft 40 is positioned axially between the downstream air supply section end 29 and the mouth 22 of the exhaust gas recirculation passage 20 and radially outside the flow cross section of the air supply section 28.
- a control body 44 is mounted eccentrically to the rotation axis 42.
- the regulating body 44 comprises a flap body 46 and a valve body 48, which is fastened to the flap body 46 via a fastening element 50.
- a valve body bore 47 is centrally formed in which the fastener 50 is attached.
- the fastener 50 is divided axially into a plurality of successive sections of different diameters.
- a first axial fastener portion 49 has substantially the diameter of the valve body bore 47 and protrudes therethrough.
- the part of the first axial fastening means section projecting from the flap body bore 47 is reshaped to form a riveted connection.
- a second axial fastener portion 51 has a diameter which is greater than the diameter of the valve body bore 47, and lies flat against the valve body 48 facing the valve body front 54.
- a third axial fastener portion 53 has an axially tapering diameter in the direction of the valve body 48.
- the valve body 48 is centrally formed a valve body bore 55 which is penetrated by a fourth axial fastener portion 57 having a smaller diameter than the valve body bore 55.
- the valve body 48 bears against the tapered fastening element section 53 on the valve body rear side 59 facing the flap body 46.
- a disc 63 is attached at a fifth axial fastener portion 61, which has a smaller diameter than the fourth axial fastener portion 57.
- a spring 65 is arranged, which radially surrounds the fastening element 50 and bears axially against the valve body front side 67 and the disk 63 facing away from the valve body 46.
- the attachment described allows a slight tilting of the valve body 48th
- the control body 44 By operating the shaft 40, the control body 44 can be moved between a first end position and a second end position.
- the flap body 46 rests with the flap body rear side 52 fully on the downstream Lucaszuschreibabêtende 29 and thus closes the intake passage 14 completely, so that no air enters the mixing section 34.
- the valve body 48 with the valve body front side 67 fully abuts against an axial end of the mouth 22 of the exhaust gas recirculation passage 20 serving as valve seat 69 and closes it completely so that no exhaust gas enters the mixing section 34.
- a protective body 56 is arranged on the flap body front side 54, which in the present exemplary embodiment consists of a plastic with a low thermal conductivity.
- the protective body 56 completely covers the valve body front side 54, with the exception of a recess 58 for the fastening element 50, and thus prevents the flap body 46 from flowing through the exhaust gas.
- the protective body 56 has a plurality of pins 60 which penetrate corresponding holes 62 in the valve body 46.
- the pins 60 are deformed on the valve body rear side 52 by hot pressing to fix the protective body 56 to the valve body 46.
- the protective body 56 has, on the protective body rear side 64 facing the valve body 46, a depression 66 which forms an air-filled closed gap 68 between the valve body 46 and the protective body 56 and thermally isolates them from one another.
- FIG 2 shows an alternative embodiment of a control device according to the invention.
- the control device 10 ' differs from the control device 10 of Figure 1 in that the control body 44' only a single flap body 46 ', which can close both the intake passage 14 and the exhaust gas recirculation passage 20 completely.
- the protective body 56 ' which is arranged on the exhaust gas return passage 20 facing flap body front 54, a recess 58' for the valve seat 69 on.
- Flap body rear side 52 is flowed in by sucked air and a exhaust gas return passage 20 facing the protective body front side 70 flows of exhaust gas.
- a exhaust gas return passage 20 facing the protective body front side 70 flows of exhaust gas.
- the protective body 56, 56 'thus always has a sufficiently high temperature in order to avoid condensation on the protective body front side 70 which is flowed through by the exhaust gas.
- the control device according to the invention for an internal combustion engine reliably prevents in this way the formation of condensation on the control body and thus an intake of condensate in the intake.
- the scope of the present application is not limited to the described embodiments.
- the protective body may consist of a different material.
- an alternative attachment of the protective body to the control body is conceivable, for example, the protective body can be arranged at a small distance to the valve body front. It is also conceivable that the thermally insulating gap is filled with another gas. LIST OF REFERENCE NUMBERS
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017130325.1A DE102017130325B4 (de) | 2017-12-18 | 2017-12-18 | Regelvorrichtung für eine Verbrennungskraftmaschine |
| PCT/EP2018/083577 WO2019120998A1 (de) | 2017-12-18 | 2018-12-05 | Regelvorrichtung für eine verbrennungskraftmaschine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3728823A1 true EP3728823A1 (de) | 2020-10-28 |
Family
ID=64664259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18815991.7A Withdrawn EP3728823A1 (de) | 2017-12-18 | 2018-12-05 | Regelvorrichtung für eine verbrennungskraftmaschine |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3728823A1 (de) |
| DE (1) | DE102017130325B4 (de) |
| WO (1) | WO2019120998A1 (de) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4687540B2 (ja) * | 2006-04-12 | 2011-05-25 | 株式会社デンソー | 流体制御弁 |
| DE102007042329A1 (de) * | 2007-09-06 | 2009-03-12 | Emcon Technologies Germany (Augsburg) Gmbh | Abgasklappenvorrichtung |
| DE102008027888A1 (de) * | 2008-06-11 | 2009-12-17 | Apel, Helga | Drosselklappenstutzen mit Drosselklappe |
| FR3029987A1 (fr) * | 2014-12-12 | 2016-06-17 | Valeo Systemes De Controle Moteur | Vanne notamment agencee pour un moteur a combustion |
| DE102015121617B4 (de) * | 2015-12-11 | 2021-01-28 | Ford-Werke Gmbh | Regelvorrichtung für eine Verbrennungskraftmaschine |
| DE102016108389B4 (de) | 2016-05-06 | 2018-03-15 | Pierburg Gmbh | Regelvorrichtung |
-
2017
- 2017-12-18 DE DE102017130325.1A patent/DE102017130325B4/de not_active Expired - Fee Related
-
2018
- 2018-12-05 WO PCT/EP2018/083577 patent/WO2019120998A1/de not_active Ceased
- 2018-12-05 EP EP18815991.7A patent/EP3728823A1/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019120998A1 (de) | 2019-06-27 |
| DE102017130325A1 (de) | 2019-06-19 |
| DE102017130325B4 (de) | 2021-02-25 |
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