WO2014140150A1 - Brennkraftmaschine mit mehreren zylindern - Google Patents
Brennkraftmaschine mit mehreren zylindern Download PDFInfo
- Publication number
- WO2014140150A1 WO2014140150A1 PCT/EP2014/054918 EP2014054918W WO2014140150A1 WO 2014140150 A1 WO2014140150 A1 WO 2014140150A1 EP 2014054918 W EP2014054918 W EP 2014054918W WO 2014140150 A1 WO2014140150 A1 WO 2014140150A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- exhaust gas
- channel
- internal combustion
- combustion engine
- inlet
- Prior art date
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 27
- 238000011144 upstream manufacturing Methods 0.000 claims description 12
- 238000005192 partition Methods 0.000 claims description 10
- 238000010790 dilution Methods 0.000 abstract description 2
- 239000012895 dilution Substances 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000001052 transient effect Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000013517 stratification Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
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- 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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/104—Intake manifolds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
- F02B31/08—Modifying induction systems for imparting a rotation to the charge in the cylinder having multiple air inlets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B33/00—Engines characterised by provision of pumps for charging or scavenging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/02—Drives of pumps; Varying pump drive gear ratio
- F02B39/08—Non-mechanical drives, e.g. fluid drives having variable gear ratio
- F02B39/10—Non-mechanical drives, e.g. fluid drives having variable gear ratio electric
-
- 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
- F02M26/08—EGR systems specially adapted for supercharged engines for engines having two or more intake charge compressors or exhaust gas turbines, e.g. a turbocharger combined with an additional compressor
-
- 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
- F02M26/20—Feeding recirculated exhaust gases directly into the combustion chambers or into the intake runners
-
- 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
- F02M26/34—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with compressors, turbines or the like 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
- F02M26/36—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for adding fluids other than exhaust gas to the recirculation passage; with reformers
-
- 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
- F02M26/44—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 in which a main EGR passage is branched into multiple passages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
- F02B2275/48—Tumble motion in gas movement in cylinder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
- F02B29/04—Cooling of air intake supply
- F02B29/0406—Layout of the intake air cooling or coolant circuit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/16—Control of the pumps by bypassing charging air
- F02B37/162—Control of the pumps by bypassing charging air by bypassing, e.g. partially, intake air from pump inlet to pump outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/18—Control of the pumps by bypassing exhaust from the inlet to the outlet of turbine or to the atmosphere
-
- 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
- F02M26/23—Layout, e.g. schematics
-
- 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
- F02M26/41—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories characterised by the arrangement of the recirculation passage in relation to the engine, e.g. to cylinder heads, liners, spark plugs or manifolds; characterised by the arrangement of the recirculation passage in relation to specially adapted combustion chambers
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- 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
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
- F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- the invention relates to an internal combustion engine having an exhaust gas recirculation system comprising an exhaust gas recirculation line between an exhaust system and an intake system, in particular a high-pressure exhaust gas recirculation system, with an electrically operated compressor arranged in an air / EGR flow path, controlled by at least one valve , optionally with fresh air and / or recirculated exhaust gas is flowed through, wherein the inlet system has at least one with a fresh air flow path flow-related inlet collector, from which at least one leading to at least one cylinder inlet channel emanates.
- the electric compressor can be bypassed via a by-pass valve having a bypass valve.
- a mixing valve is arranged in the region of a merger of the exhaust gas recirculation line and a fresh air flow path.
- the air / EGR flow path opens into the inlet header as the only inlet line.
- a cylinder-selective exhaust gas recirculation is therefore not possible.
- the mixing valve has the disadvantage that it must be designed for both high temperatures, as well as high exhaust gas / air flow rates, which adversely affects the manufacturing cost and cost. Since the mixing valve is traversed by the exhaust gas, it is exposed to heavy pollution, which has a very adverse effect on the life.
- EP 0 911 502 B1 discloses an internal combustion engine with an exhaust gas recirculation system, wherein the exhaust gas recirculation line opens into a distributor strip, from which in each case one distributor channel discharges into each case into one inlet channel. As a result, the same and high charge dilution can be achieved for all cylinders.
- the object of the invention is to reduce in the simplest possible way in an internal combustion engine of the type mentioned with the least possible effort fuel consumption and emissions in all operating areas and to allow a long service life.
- this is achieved in that the air / EGR flow path downstream of the electric compressor into cylinder-selective feed channels. divided, wherein per cylinder at least one feed channel opens into an inlet channel.
- High-pressure exhaust gas recirculation systems are exhaust gas recirculation systems in which the exhaust gas recirculation line branches off from the exhaust system upstream of the turbine of the exhaust gas turbocharger and opens into the intake system downstream of the compressor of the exhaust gas turbocharger.
- the air / EGR flow path downstream of the electric compressor is divided into cylinder-selective feed channels, wherein at least one feed channel opens into an inlet channel per cylinder, in particular in high-pressure exhaust gas recirculation systems, a uniform distribution of the recirculated exhaust gas can be made possible.
- the cylinder-selective exhaust gas recirculation has the added benefit of avoiding contamination of parts of the intake system, such as intercoolers, intake manifolds or the like, and moreover, the transient behavior can be substantially improved.
- a particular advantage results if at least one feed channel in the direction of the inlet channel main flow opens eccentrically into the inlet channel such that a tumble flow is generated or at least supported in the combustion chamber.
- the channel axis of the feed channel may include an angle of 0 ° +/- 30 ° with the central axis of the inlet channel in the region of the outlet opening.
- Effective support for the tumble flow in the cylinder is achieved when the outlet opening is located in the upper channel section farther from the cylinder.
- the mouth of at least one feed channel can be arranged, for example, in the initial region of the inlet channel, preferably in the region of the inlet collector, or in the end region of the inlet channel-preferably immediately before the mouth of the inlet channel into the combustion chamber. Due to the eccentric inflow, an asymmetric velocity distribution is generated in the inlet channel, whereby a tumble pulse is initiated upon the inflow into the cylinder. As a result, the charge movement in the combustion chamber can be generated or supported. Furthermore, an EGR stratification in the combustion chamber can also be generated via the directed EGR supply
- a particularly good charge movement can be generated if the inlet channel at least in sections has a parallel to the inlet channel main flow formed channel partition, preferably the channel partition is at least partially disposed in the region of the central axis and the upper third of the inlet channel, and wherein the channel partition the inlet channel in an upper cylinder facing away from the cylinder and a cylinder facing the cylinder turned lower channel section divides.
- the upper third of the inlet channel is to be understood as the third which is furthest away from the cylinder or the cylinder head sealing plane.
- the inlet channel is thus divided by the channel partition into at least two channel sections, wherein the exhaust gas recirculation line opens into the upper channel section.
- the channel partition helps maintain the velocity distribution of inlet flow in the inlet channel until it enters the cylinder.
- a particularly simple variant of the invention provides that the second valve as a check valve - preferably upstream of the bypass line - is formed. This allows a particularly simple and accurate control of the EGR rates in all operating ranges of the internal combustion engine.
- a preferred embodiment of the invention provides that the second valve is formed by a simple control valve. This allows a particularly wide control range for exhaust gas and fresh air, as well as a mixture of exhaust gas and fresh air.
- the first valve can be designed for high exhaust gas temperatures, the second valve for the maximum intake air volume.
- the mixing valve known from the prior art there are not only advantages in terms of costs, production, installation space and service life, but also in the control range.
- 100% fresh air and 100% EGR quantity all intermediate mixing ratios are possible.
- the known from the prior art function of the mixing valve is thus divided into at least two valves. By dividing it into two valves, they can be better designed than a two-way mixing valve.
- the arranged in the exhaust gas recirculation line first valve can be designed for high temperature and relatively low throughput, while the second valve can be designed for lower temperature, but higher throughput.
- oversizing to high temperatures is also temperatures and high throughputs are not required.
- the electric supercharger can optionally be used to convey recirculated exhaust gas, fresh air, or a mixture of exhaust gas and fresh air. As a result, the transient behavior can be significantly improved.
- the electric compressor makes it possible to recycle high amounts of exhaust gas into the intake system even under unfavorable pressure conditions. Furthermore, the electric compressor can be used in addition to the compressor of the exhaust gas turbocharger as an additional charge stage for fresh air or a mixture of fresh air and recirculated exhaust gas.
- the electric compressor can be bypassed by a bypass line, wherein preferably in the bypass line, in particular designed as a check valve third valve is arranged.
- the air / EGR flow path upstream of the division into the feed channels is flow-connected to the fresh air flow path of the inlet system, preferably in the flow connection between the fresh air flow path and the air / EGR flow path a, preferably formed by a control valve, fourth valve is arranged.
- the flow connection makes it possible to decouple the charge movement supporting effect of the exhaust gas recirculation and set exhaust gas recirculation rate and charge motion support largely independently.
- FIGS. 1 to 4 show internal combustion engines according to the invention in various design variants
- Fig. 5 to Fig. 7 inlet systems of internal combustion engines according to the invention in various embodiments.
- the engine 1 designed for a plurality of cylinders Z has an exhaust gas recirculation system 2 between an exhaust system 3 and an intake system 4 on.
- Reference numeral 5 designates an exhaust-gas turbocharger whose exhaust turbine 6 is arranged in the outlet branch 7 of the outlet system 3 and whose compressor 8 is arranged in the inlet branch 9 of the inlet system 4. Downstream of the turbine 6 of the exhaust gas turbocharger 5 exhaust gas purification devices 10 and muffler 11 are arranged.
- an air filter 12 is arranged upstream of the compressor 8 of the exhaust gas turbocharger 5, and a charge air cooler 13 is arranged downstream of the compressor 8.
- Reference numeral 14 designates a lambda probe arranged in the exhaust gas line 7 downstream of the exhaust gas turbine 6
- reference symbol 15 designates a boost pressure sensor arranged in the intake line 9 downstream of the compressor 8.
- the exhaust gas recirculation system 2 has an exhaust gas recirculation line 19, which starts from the exhaust line 7 and leads to the intake system 4.
- an exhaust gas recirculation cooler 20 and designed as a control valve first valve 21 is arranged in the exhaust gas recirculation line 19, which starts from the exhaust line 7 and leads to the intake system 4.
- an exhaust gas recirculation cooler 20 and designed as a control valve first valve 21 is arranged in the exhaust gas recirculation cooler 20 and designed as a control valve first valve 21.
- Reference numeral 22 denotes an electric compressor which is positioned in an air / EGR flow path 30 between the exhaust gas recirculation system 2 and the intake system 4 so as to selectively supply recirculated exhaust gas, fresh air, or a mixture of recirculated exhaust gas and fresh air.
- the electric supercharger 22 can be bypassed on the fresh air side via a bypass line 24 emerging from the fresh air flow path 9a - the fresh air flow path 9c - in which a third valve 25 designed as a check valve is arranged.
- the exhaust gas recirculation system 2 is designed as a high-pressure exhaust gas recirculation system, wherein the exhaust gas recirculation line 19 branches off from the exhaust gas line 7 upstream of the exhaust gas turbine 6 and opens into the intake system 4 downstream of the compressor 8.
- a distributor strip 26 with cylinder-selective feed channels 27 is arranged in the region of the confluence of the air / EGR flow path 30 into the intake system 4.
- the feed channels 27 lead either directly into inlet ducts 18 leading to each cylinder Z (FIG. 5) or into the inlet header 16 (FIGS. 6 and 7), the outlet openings 27a of the feed ducts 27 into the inlet duct main flow E of the inlet ducts 18 are directed.
- the channel axis 27 'of the feed channel 27 closes in the region of the outlet opening 27a with the central axis 28 of the inlet channel 18 an angle ⁇ of 0 ° +/- 30 °.
- the outlet opening 27a of each feed channel 27 is arranged eccentrically with respect to the inlet channel 18, preferably in the upper channel section further spaced from the cylinder Z, whereby a targeted charge movement of the inlet flow in the cylinder Z is initiated, as shown in FIGS. 5 to Fig. 6 is indicated.
- a tumble motion T in the cylinder space Z is amplified or caused.
- the charge movement can be further enhanced if the inlet channel 18 is divided into at least two sections by a channel partition wall 29 oriented in the region of the central axis 28 of the inlet channel 18 and oriented in inlet channel main flow E - an upper section 18a facing away from the cylinder the cylinder-facing lower portion 18b - is divided, wherein the inflow of the recirculated exhaust gas A in Figs. 5 to FIG. 7 takes place in the upper portion 18 a of the inlet channel 18.
- the cylinder Z thus different flow rates form, as indicated by the arrows S. This results in the cylinder space Z a pronounced tumble movement T.
- the electric compressor 22 delivers either fresh air from the fresh air train 9a of the intake system 4, or recirculated exhaust gas from the exhaust gas recirculation line 19, or a mixture of recirculated exhaust gas and fresh air.
- the first valve 21 needs to be designed only for the maximum permissible recirculated exhaust gas quantity, but for high exhaust gas temperatures.
- the second valve 23, however, is thermally stressed little, but must be able to control large quantities of intake air.
- each of the two valves 21, 23 can be optimally designed for its respective intended use.
- the air / EGR flow path 30 of the electric compressor 22 may be further connected to the fresh air flow path 9c of the intake manifold 9 via a connecting pipe 32, and a fourth valve 33 formed as a control valve may be disposed in the connecting pipe 32 ,
- the connecting line 32 between the throttle flap 17 and the inlet header 16 opens into the intake branch 9.
- the connecting line 32 is connected upstream of the throttle valve 17 to the fresh air flow path 9c of the intake branch 9.
- the fourth valve 33 can be dispensed with.
- the connecting line 32 makes it possible to decouple exhaust gas recirculation and charging movement from each other.
- the electric compressor 22 serves both as a second charging stage, as well as a pump for recirculated exhaust gas. This makes it possible to carry out an exhaust gas recirculation with high exhaust gas recirculation rates even under unfavorable pressure conditions.
- the electric compressor 22 (which may be located either before or after the compressor 8 of the exhaust gas turbocharger) acts as a second charging stage that can close the so-called "turbo lag".
- the electric compressor 22 acts as a pump for recirculated exhaust gas.
- the required electrical energy is preferably generated via an improved generator (eg, a belt starter generator) - in deceleration phases or in phases in which the energy generation from the energy balance is positive. Only in emergencies, the energy is generated at the time of consumption of the electric compressor 22.
- the illustrated variants with cylinder-selective exhaust gas recirculation have the advantage that excessive contamination of the intake system 4 can be avoided and the transient behavior can be improved. Furthermore, cylinder-selective supply in the cylinder head and the generation of charge movement is possible. In addition, a stratification of the recirculated exhaust gas in the combustion chamber can be generated via the directed supply.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
- Supercharger (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112014000280.1T DE112014000280A5 (de) | 2013-03-13 | 2014-03-13 | Brennkraftmaschine mit mehreren Zylindern |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA50172/2013 | 2013-03-13 | ||
ATA50172/2013A AT512890B1 (de) | 2013-03-13 | 2013-03-13 | Brennkraftmaschine |
Publications (1)
Publication Number | Publication Date |
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WO2014140150A1 true WO2014140150A1 (de) | 2014-09-18 |
Family
ID=49919834
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2014/054918 WO2014140150A1 (de) | 2013-03-13 | 2014-03-13 | Brennkraftmaschine mit mehreren zylindern |
Country Status (3)
Country | Link |
---|---|
AT (1) | AT512890B1 (de) |
DE (1) | DE112014000280A5 (de) |
WO (1) | WO2014140150A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016219319A1 (de) * | 2016-10-05 | 2018-04-05 | Bayerische Motoren Werke Aktiengesellschaft | Abgasanlage eines Motors |
CN111164297A (zh) * | 2017-12-04 | 2020-05-15 | 宝马股份公司 | 内燃机、具有这种内燃机的机动车以及用于运行内燃机的方法 |
AT523180A4 (de) * | 2019-12-16 | 2021-06-15 | Avl List Gmbh | Brennkraftmaschine mit mehreren zylindern |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT15205U1 (de) | 2015-07-21 | 2017-02-15 | Avl List Gmbh | Brennkraftmaschine |
DE102015016207A1 (de) * | 2015-12-14 | 2017-06-14 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Brennkraftmaschinenanordnung |
AT518400B1 (de) * | 2016-02-10 | 2017-10-15 | Avl List Gmbh | Brennkraftmaschine mit mehreren zylindern |
AT518431B1 (de) * | 2016-02-10 | 2017-10-15 | Avl List Gmbh | Verfahren zum betreiben einer brennkraftmaschine |
AT520737B1 (de) * | 2018-02-06 | 2019-07-15 | Avl List Gbmh | Luftsauganlage für eine brennkraftmaschine |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3025106A1 (de) * | 1980-07-02 | 1982-01-21 | Suzuki Jidosha Kogyo K.K., Hamana, Shizuoka | Motor mit einem hauptansaugweg |
EP0586123A2 (de) * | 1992-08-31 | 1994-03-09 | Hitachi, Ltd. | Einlassluftanlage für Brennkraftmaschine |
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EP2330278A1 (de) * | 2008-12-17 | 2011-06-08 | Aisin Seiki Kabushiki Kaisha | Lufteinlassverteiler |
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US6062026A (en) * | 1997-05-30 | 2000-05-16 | Turbodyne Systems, Inc. | Turbocharging systems for internal combustion engines |
AT2434U1 (de) * | 1997-10-21 | 1998-10-27 | Avl List Gmbh | Fremdgezündete brennkraftmaschine |
JP4341423B2 (ja) * | 2004-02-05 | 2009-10-07 | トヨタ自動車株式会社 | 内燃機関用過給システム |
-
2013
- 2013-03-13 AT ATA50172/2013A patent/AT512890B1/de active
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2014
- 2014-03-13 DE DE112014000280.1T patent/DE112014000280A5/de active Pending
- 2014-03-13 WO PCT/EP2014/054918 patent/WO2014140150A1/de active Application Filing
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DE3025106A1 (de) * | 1980-07-02 | 1982-01-21 | Suzuki Jidosha Kogyo K.K., Hamana, Shizuoka | Motor mit einem hauptansaugweg |
EP0586123A2 (de) * | 1992-08-31 | 1994-03-09 | Hitachi, Ltd. | Einlassluftanlage für Brennkraftmaschine |
EP0719916A1 (de) * | 1994-12-29 | 1996-07-03 | Institut Français du Pétrole | Verfahren und Vorrichtung zur Abgasrückführung für eine 4-Takt Brennkraftmaschine mit Fremdzündung |
EP1493907A2 (de) * | 2003-07-02 | 2005-01-05 | Mazda Motor Corporation | EGR Steuervorrictung für Brennkraftmaschinen |
WO2007083131A1 (en) * | 2006-01-23 | 2007-07-26 | Ricardo Uk Limited | Supercharged diesel engines |
WO2010012919A1 (fr) * | 2008-07-29 | 2010-02-04 | Renault S.A.S. | Moteur a combustion interne suralimente equipe d'un circuit de recirculation de gazes d'echappement flexible et procede de mise en action du moteur |
US20100146968A1 (en) * | 2008-12-12 | 2010-06-17 | Alexander Simpson | Emission system, apparatus, and method |
EP2330278A1 (de) * | 2008-12-17 | 2011-06-08 | Aisin Seiki Kabushiki Kaisha | Lufteinlassverteiler |
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DE102016219319A1 (de) * | 2016-10-05 | 2018-04-05 | Bayerische Motoren Werke Aktiengesellschaft | Abgasanlage eines Motors |
CN111164297A (zh) * | 2017-12-04 | 2020-05-15 | 宝马股份公司 | 内燃机、具有这种内燃机的机动车以及用于运行内燃机的方法 |
CN111164297B (zh) * | 2017-12-04 | 2022-02-25 | 宝马股份公司 | 内燃机、具有这种内燃机的机动车以及用于运行内燃机的方法 |
AT523180A4 (de) * | 2019-12-16 | 2021-06-15 | Avl List Gmbh | Brennkraftmaschine mit mehreren zylindern |
AT523180B1 (de) * | 2019-12-16 | 2021-06-15 | Avl List Gmbh | Brennkraftmaschine mit mehreren zylindern |
Also Published As
Publication number | Publication date |
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AT512890B1 (de) | 2013-12-15 |
AT512890A4 (de) | 2013-12-15 |
DE112014000280A5 (de) | 2015-08-20 |
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