EP3224466A1 - Ventilvorrichtung zur abgasrückführung an einem verbrennungsmotor - Google Patents
Ventilvorrichtung zur abgasrückführung an einem verbrennungsmotorInfo
- Publication number
- EP3224466A1 EP3224466A1 EP15781366.8A EP15781366A EP3224466A1 EP 3224466 A1 EP3224466 A1 EP 3224466A1 EP 15781366 A EP15781366 A EP 15781366A EP 3224466 A1 EP3224466 A1 EP 3224466A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- exhaust gas
- valve
- gas recirculation
- internal combustion
- 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.)
- Granted
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
- F02M26/66—Lift valves, e.g. poppet valves
- F02M26/69—Lift valves, e.g. poppet valves having two or more valve-closing members
-
- 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
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
-
- 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
- F02M26/39—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with two or more EGR valves disposed in series
-
- 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
- F02M26/42—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories having two or more EGR passages; EGR systems specially adapted for engines having two or more cylinders
-
- 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
- F02M26/45—Sensors specially adapted for EGR systems
- F02M26/46—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition
- F02M26/47—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition the characteristics being temperatures, pressures or flow rates
-
- 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
- F02M26/53—Systems for actuating EGR valves using electric actuators, e.g. solenoids
- F02M26/54—Rotary actuators, e.g. step motors
-
- 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
- F02M26/02—EGR systems specially adapted for supercharged engines
- F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
- F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
Definitions
- Valve device for exhaust gas recirculation on an internal combustion engine
- the invention relates to a valve device for exhaust gas recirculation to an internal combustion engine with a housing having at least one inlet channel and at least one outlet channel, two valve seats which are formed in the housing, and two control bodies which are synchronously actuated via a common actuator, wherein each valve seat is a control body for Regulation is associated with a flow cross-section.
- the exhaust gas recirculation is used in a known manner to minimize pollutant emissions from internal combustion engines, in which the exhaust gas is cooled or uncooled from the exhaust manifold back to the cylinders.
- two exhaust gas recirculation lines are formed, which branch off from the Abgasauslass effeten.
- these exhaust gas recirculation lines usually unite in the region of the exhaust gas recirculation valve to a line.
- valve devices having a housing with two inlets and an outlet, wherein between the channels two valve seats are formed, which are controlled by two arranged on a valve rod and jointly actuated control bodies. Upon actuation of the valve, both flow cross sections are automatically released so that a flow can take place from both inlets to the outlet.
- Such an exhaust gas recirculation valve for a V-type engine is known, for example, from DE 102 34 845 A1 or from DE 101 30 013 A1.
- the outlet is arranged above the upper control body, so that a mixture of the two recirculated exhaust gas flows takes place with the valve open in a mixing chamber between the two valve seats.
- EP 1 362 985 B1 An alternative embodiment of this is disclosed in EP 1 362 985 B1, in which two parallel control bodies are moved via a common actuator and wherein each control body controls an inlet duct. Downstream of the two adjacent valve seats, the two exhaust gas recirculation channels unite.
- DE 199 51 591 C1 discloses a valve with three valve members, one of which is arranged between the two inlet channels and closes a direct connection between these two channels, even if the other two control bodies for opening the two between the Inlets and outlets arranged flow cross sections are lifted from their valve seats. The two exhaust streams then unite in the housing.
- valve device having the features of the main claim 1 or the main claim 2.
- a first inlet channel and a second inlet channel are formed, which are separated by a partition, wherein the free flow cross-section of both inlet channels on the first valve seat by the position of the first control body is adjustable to the first valve seat remain in internal combustion engines with two separate Cylinder banks these two exhaust lines separated in the closed state of the valve, so that no overshoot from one cylinder bank to the other is possible.
- a common throughput is nevertheless regulated by the second control body.
- both the turbine efficiency and the gas dynamics of the internal combustion engine will be improved since the gas volume appended to the exhaust manifold is reduced by the volume of the gas Exhaust gas cooler is reduced. Also, the gas volume of the intake manifold is not increased, since there is also a separation of the radiator volume through the downstream of the radiator arranged control body.
- the two control bodies are arranged on a common valve rod, which is translationally movable via an actuator and mounted in the housing.
- a very accurate control and a tight seal are easily accessible. It takes little space.
- a housing wall between the two valve seats via which the two separate inlet channels are separated from the second valve seat in the closed state of the valve device.
- This makes it possible to make the valve very small, since the inlet channel opposite to the outlet channel of the heat exchanger can be formed and a direct flow of the second valve seat is simultaneously prevented.
- a second outlet channel and a third inlet channel are formed on the housing, by which a connection of a for example U-shaped through-flow cooler between the two valve seats is made possible.
- the second outlet channel is arranged downstream of the first valve seat and the third inlet channel is formed upstream of the second valve seat, so that the housing of the valve is initially flown over the two inlet channels, behind the first valve seat, the exhaust gas flow through the second outlet channel from the housing to Radiator flows and flows back through the third inlet channel into the housing of the valve device. Behind the second valve seat, the exhaust gas then flows through the first outlet channel from the housing in the direction of the suction pipe.
- the housing wall is arranged between the first two inlet channels and the third inlet channel, which is arranged in extension of the two first inlet channels in the housing. This reduces the space of the valve device.
- the first inlet channel is connected to a first cylinder bank and the second inlet channel is connected to a second cylinder bank, whereby the separation of the cylinder banks is ensured when the valve is closed.
- an opening is formed in the third inlet channel, in which a pressure or Flow sensor is arranged. This serves to determine the flow through the heat exchanger and thus to be able to regulate an optimum amount of exhaust gas recirculated to the intake manifold.
- the sensor is located on the cold side of the heat exchanger and is thus exposed to lower thermal loads.
- valve device with which not only a complete separation of the cylinder banks is present when the valve is closed, but also a total mass flow is controlled via the second control body.
- gas volume of the exhaust gas recirculation passage is minimized by separating the radiator volume from both the exhaust manifold and the intake manifold. This causes a better gas dynamics of the engine and increases the turbine efficiency. To achieve this, no additional components are needed. Instead, this is achieved with a simply constructed valve with only one actuator.
- valve device An embodiment of a valve device according to the invention is shown in the figures and will be described below.
- Figure 1 shows a schematic representation of an internal combustion engine with two cylinder banks with exhaust gas recirculation.
- Figure 2 shows a perspective sectional view of a valve device according to the invention in side view.
- Figure 3 shows the side view of the valve device of Figure 2 in plan view.
- FIG. 1 shows an internal combustion engine 10 with a first cylinder bank 12 and a second cylinder bank 14. Both cylinder banks 12, 14 are supplied with intake air via a suction line 16, in which a compressor 18 of a turbocharger 20 is arranged. From the intake passage 16, the air flows into an intake manifold 21, from which single intake passages 22 lead to the individual cylinders 24 of the two cylinder banks 12, 14 of the internal combustion engine 10 on both sides. From each cylinder bank 12, 14, the exhaust gas enters its own exhaust manifold 26, 28, which combine to form an exhaust pipe 30, 32, respectively. The exhaust pipes 30, 32 extending from the two exhaust manifolds 26, 28 merge at a turbine 34 of the turbocharger 20 to a common exhaust gas outlet conduit 36 through which the exhaust gas is expelled.
- the two exhaust gas recirculation lines 38, 40 lead to a valve device 42 according to the invention, to which a heat exchanger 44 is attached. Downstream of the valve device 42, the exhaust gas flows in a common exhaust gas recirculation line 46 back to the intake line 16, where the exhaust gas recirculation line 46 downstream of the compressor 18 opens.
- the valve device 42 which is shown in FIGS. 2 to 4, has a housing 48, on which three inlet channels 50, 52, 54 and two outlet channels 56, 58 are formed.
- the first intake passage 50 is connected to the first exhaust gas recirculation line 38 and the second parallel intake passage 52 is connected to the second exhaust gas recirculation line 40 so that the exhaust gas can flow into the housing 48 via the two intake passages.
- the first exhaust passage 56 is connected to the one exhaust gas recirculation line 46, so that the exhaust gas via the first exhaust passage 56, the housing 48 of the Valve device 42 can leave in the direction of the engine 10 again.
- the two inlet channels 50, 52 are separated from each other by a partition wall 59 which extends to a first valve seat 60 formed in the housing 48 onto which a first control body 62 in the form of a valve disk can be lowered or of which the control body 62 controls a free flow cross section 64 is removable.
- This valve seat 60 or the control body 62 thus extend over both cross sections of the inlet channels 50, 52, wherein the flow cross section 64 is divided into two equal parts accordingly.
- Downstream of the control body 62 there is the second outlet channel 58, into which the exhaust gas from both cylinder banks 12, 14 thus flows when the throughflow cross-section is open.
- This second outlet channel 58 is connected to an inlet of the heat exchanger 44.
- This third inlet channel 54 is disposed directly opposite the first and second inlet channels 50, 52, but these are separated from the third inlet channel 54 by a housing wall 66.
- the third inlet channel 54 opens at a second housing 48 formed in the valve seat 68, which is concentric with the first valve seat 60 and which corresponds to a second control body 70 which can be lifted to lower a second flow cross-section 72 from the second valve seat 68 and lowered to this. Downstream of the second valve seat 68 is the first outlet channel 56 formed over which the exhaust gas valve device 42 finally leaves in the direction of the internal combustion engine 10 again.
- Both control bodies 62, 70 are fixedly arranged on a common valve rod 74, which is mounted in the housing 48 and is actuated via an actuator 76. This means that both control bodies 62, 70 are lifted synchronously by the actuator 76 from their valve seats 60, 68 or lowered onto them.
- the valve rod 74 passes through the housing 48 centrally between the two partial flow cross-sections 64, ie in extension of the partition wall 59.
- the actuator 76 To control the amount of exhaust gas to be recirculated, the actuator 76 must be actuated and release a flow cross-section 64, 72, which allows the requested exhaust gas flow at an existing pressure gradient.
- an opening 78 in the housing 48 is formed in the third inlet channel 54, ie downstream of the heat exchanger 44, in which a flow sensor 80 is arranged, via which the recirculated exhaust gas quantity is determined. This is connected in a known manner to a control of the valve device 42, so that the measured values of the sensor 80 for the correct regulation of the actuator 76 are made available to the control.
- the valve used for this purpose is very simple in construction and easy to assemble.
- the space requirement is also minimized. Nevertheless, a very precise regulation is possible.
- the position of the inlet and outlet channels can be changed in the housing or other body rule can be used.
- the shape of the heat exchanger such a change of the channels to each other may be useful. Even with a low-pressure exhaust gas recirculation, this valve device can be used.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Analytical Chemistry (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014117309.0A DE102014117309B4 (de) | 2014-11-26 | 2014-11-26 | Ventilvorrichtung zur Abgasrückführung an einem Verbrennungsmotor |
| PCT/EP2015/074125 WO2016083018A1 (de) | 2014-11-26 | 2015-10-19 | Ventilvorrichtung zur abgasrückführung an einem verbrennungsmotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3224466A1 true EP3224466A1 (de) | 2017-10-04 |
| EP3224466B1 EP3224466B1 (de) | 2018-10-03 |
Family
ID=54329546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15781366.8A Not-in-force EP3224466B1 (de) | 2014-11-26 | 2015-10-19 | Ventilvorrichtung zur abgasrückführung an einem verbrennungsmotor |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP3224466B1 (de) |
| DE (1) | DE102014117309B4 (de) |
| WO (1) | WO2016083018A1 (de) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19734801A1 (de) * | 1997-08-12 | 1999-02-18 | Pierburg Ag | Abgasrückführsystem für eine Brennkraftmaschine mit einem Turbolader |
| DE19951591C1 (de) * | 1999-10-27 | 2001-01-04 | Daimler Chrysler Ag | Abgasrückführeinrichtung für eine Brennkraftmaschine mit zwei Abgasfluten |
| DE10130013A1 (de) * | 2001-06-25 | 2003-01-02 | Pierburg Gmbh | Abgasrückführanordnung |
| DE10221711A1 (de) * | 2002-05-16 | 2003-11-27 | Pierburg Gmbh | Ventilsystem |
| DE10234845A1 (de) * | 2002-07-31 | 2004-02-19 | Daimlerchrysler Ag | Brennkraftmaschine mit Abgasrückführung und Betriebsverfahren hierfür |
| FR2858013B1 (fr) * | 2003-07-22 | 2007-06-29 | Renault Sa | Moteur a combustion interne pour vehicule automobile comprenant une vanne egr |
| FR2872862B1 (fr) * | 2004-07-09 | 2006-09-22 | Renault Sas | Dispositif de commande pour un circuit de recirculation de gaz d'echappement d'un moteur a combustion interne |
| DE102013003738A1 (de) * | 2013-03-05 | 2014-09-11 | Daimler Ag | Abgasrückführventil |
-
2014
- 2014-11-26 DE DE102014117309.0A patent/DE102014117309B4/de not_active Expired - Fee Related
-
2015
- 2015-10-19 WO PCT/EP2015/074125 patent/WO2016083018A1/de not_active Ceased
- 2015-10-19 EP EP15781366.8A patent/EP3224466B1/de not_active Not-in-force
Also Published As
| Publication number | Publication date |
|---|---|
| DE102014117309B4 (de) | 2021-02-04 |
| WO2016083018A1 (de) | 2016-06-02 |
| DE102014117309A1 (de) | 2016-06-02 |
| EP3224466B1 (de) | 2018-10-03 |
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