CN111594296A - Internal combustion engine and motor vehicle - Google Patents
Internal combustion engine and motor vehicle Download PDFInfo
- Publication number
- CN111594296A CN111594296A CN202010103598.2A CN202010103598A CN111594296A CN 111594296 A CN111594296 A CN 111594296A CN 202010103598 A CN202010103598 A CN 202010103598A CN 111594296 A CN111594296 A CN 111594296A
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- China
- Prior art keywords
- separator
- combustion engine
- exhaust gas
- internal combustion
- turbine
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
- F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
- F01M13/022—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure using engine inlet suction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
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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
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/06—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding lubricant vapours
-
- 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
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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
- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
- F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
- F01M2013/026—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure with pumps sucking air or blow-by gases from the crankcase
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
- F01M2013/0422—Separating oil and gas with a centrifuge device
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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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
Abstract
The invention relates to an internal combustion engine (1) for a motor vehicle, having at least one exhaust gas return system (5) and at least one crankcase ventilation system (8) having at least one oil mist separator (12), the at least one oil mist separator (12) being connected to a crankcase (10) of the internal combustion engine (1) via a supply line (9) and to an intake manifold (3) of the internal combustion engine (1) via a discharge line (11). In order to provide a more compact and more energy-efficient internal combustion engine (1), the internal combustion engine (1) has at least one turbine (14), the at least one turbine (14) has at least one turbine rotor (19) and a turbine housing (15) receiving the turbine rotor (19), wherein the oil mist separator (12) has at least one centrifugal separator, the at least one centrifugal separator has a separator rotor (17) and a separator housing (16), the separator rotor (17) is connected to the turbine rotor (19) in a rotationally fixed manner by means of a shaft (18), the separator housing (16) receives the separator rotor (17), wherein the turbine housing (15) forms a line section of the exhaust gas return system (5).
Description
Technical Field
The invention relates to an internal combustion engine for a motor vehicle, having at least one exhaust gas return system and at least one crankcase ventilation system with at least one oil mist separator, which is connected to the crankcase of the internal combustion engine by means of a supply line and to the intake manifold of the internal combustion engine via a discharge line.
Background
Blow-by gases occur in the crankcase of the internal combustion engine, which are discharged from the crankcase via a ventilation system of the internal combustion engine, and which are introduced into an intake tract of the internal combustion engine, in particular for environmental reasons. For this purpose, the pressure difference between the crankcase and the inlet duct may be used. The ventilation system has a ventilation line from the crankcase to the intake duct, and an oil mist separator is arranged on the ventilation line to separate oil mist contained in the blow-by gas from the blow-by gas. The separated oil is then returned from the oil mist separator into the crankcase.
JP2005069205A discloses an internal combustion engine with an air-cooled exhaust gas cooler, which is arranged on an exhaust gas return line connected to an exhaust manifold and an intake manifold of the internal combustion engine. Furthermore, the internal combustion engine has a fan which is driven by means of the exhaust-gas flow in the exhaust-gas return line in order to supply the exhaust-gas cooler with cooling air with the fan.
KR20100116208A discloses a method for controlling an internal combustion engine system having a turbocharged machine with a divided exhaust flow between the bleed air and the scavenge outlet valves, an inlet and outlet subsystem connected to the machine, and an exhaust gas return subsystem connected by means of the inlet and outlet subsystem. The exhaust return gas is recirculated by means of an exhaust return subsystem, which is connected via an outlet and an inlet subsystem. Further, at least one exhaust gas return valve is used, the at least one exhaust gas return valve being connected to a scavenge outlet manifold, which is connected to a scavenge outlet valve. A bleed air outlet valve is connected to the outlet sub-system, and a scavenge air outlet valve is connected to the exhaust gas return sub-system downstream of the machine. The control time of the outlet valve is varied to split the exhaust flow between the turbocharger turbine in the outlet subsystem and the exhaust gas return subsystem. Furthermore, the scavenging exhaust gas flows are divided by an exhaust gas return subsystem.
US2018/0045144a1 discloses a method for removing impurities from returned exhaust gas by blowing air. The method involves performing a blowing mode in which a portion of the mixture, which serves as compressed air, flows into an exhaust return path, an exhaust portion, which serves as exhaust return gas and flows into the inlet system, is supplied to an exhaust system of the engine via the exhaust return path, the exhaust system being connected to the inlet system, when a current inlet system pressure exceeds a desired inlet system pressure in the inlet system supplying the mixture to the motor.
CA2809394C discloses a method for cleaning an exhaust gas return line of a gas turbine. The gas turbine operates at a cleaning speed, blown air is directed out of the compressor and this air is introduced into the exhaust gas return line for cleaning.
Disclosure of Invention
It is an object of the present invention to provide an internal combustion engine which is constructed in a more compact manner and which is more energy efficient.
This object is achieved according to the invention with an internal combustion engine having the features of claim 1, which has at least one turbine having at least one turbine rotor and a turbine housing receiving the turbine rotor, wherein the oil mist separator has at least one centrifugal separator having a separator rotor which is connected in a rotationally fixed manner to the turbine rotor by means of a shaft and a separator housing receiving the separator rotor, wherein the turbine housing forms a line section of the exhaust gas return system.
It should be noted that the features and measures explained in detail in the following description may be combined with each other and illustrate additional embodiments of the invention in any technically advantageous manner. The description further characterizes and explains the invention in detail, particularly with reference to the drawings.
According to the invention, the oil mist separator or the centrifugal separator thereof is driven by means of a turbine, which is driven with the returning exhaust gas. In order to drive the turbine, it is therefore not necessary to use the motive power of the combustion engine of the internal combustion engine or the electric power of the battery or generator of the internal combustion engine, whereby the fuel consumption of the internal combustion engine can be reduced. The internal combustion engine according to the invention can thus be operated in a very energy-efficient manner.
Since no additional drive components need to be mounted to the internal combustion engine according to the invention in order to drive the centrifugal separator or its separator rotor, the internal combustion engine according to the invention can be constructed in a significantly more compact and thus more space-saving and additionally lighter manner.
With the oil mist separator, blow-by gases discharged from the crankcase of the internal combustion engine via the supply line of the crankcase ventilation system are free from oil mist contained therein, so that clean blow-by gases are produced which are supplied to the intake manifold of the internal combustion engine via the discharge of the crankcase ventilation system. Alternatively, the clean blow-by gas may be slightly compressed by means of an oil mist separator, which may have a positive effect on the efficiency of the internal combustion engine. The use of a centrifugal separator enables a very efficient separation of oil mist from blow-by gases supplied to the centrifugal separator.
The turbine rotor may be constructed as an impeller or the like. The turbine housing may have a connection for introducing the returned exhaust gas into the turbine housing and a connection for discharging the exhaust gas from the turbine housing, and may further be closed off from the environment. The turbine rotor housing may be disposed proximate to or spaced apart from the separator housing. The exhaust gases which branch off from the exhaust gas duct of the internal combustion engine and are thus returned are supplied from the exhaust gas duct to the intake manifold of the internal combustion engine, in particular indirectly via the turbine housing, so that the turbine housing forms a line section of the exhaust gas return system.
The separator rotor may have vanes or the like, or be constructed in a conventional manner. The separator rotor is connected in a rotationally fixed manner to the turbine rotor via a common shaft. The separator housing additionally has at least one oil drain which is connected via at least one oil drain line so as to communicate with the crankcase of the internal combustion engine. The oil drain line may have a check valve at a side end of the crankcase to prevent blow-by gas from the crankcase from being introduced into the oil drain line.
The internal combustion engine may have at least one combustion engine, for example an otto engine or a diesel engine. The combustion engine may be supercharged, for which purpose the internal combustion engine may have at least one exhaust-gas turbocharger.
According to an advantageous embodiment, the exhaust gas return system has at least one exhaust gas return line which branches off from the exhaust gas duct of the internal combustion engine and which leads to the intake manifold, and which is partly formed by the turbine housing, and at least one exhaust gas cooling unit is arranged on the at least one exhaust gas return line, wherein the exhaust gas cooling unit is arranged upstream of the turbine housing with respect to the exhaust gas flow through the exhaust gas return line. By means of the exhaust gas cooling unit, the returning exhaust gas is cooled, which has a favourable effect on the combustion in the internal combustion engine. Furthermore, as an effect or result of the downstream arrangement of the turbine housing, the turbine is less strongly thermally loaded, so that more cost-effective materials can be used for producing the turbine, and the turbine becomes more durable. The exhaust cooling unit may be constructed as a passive unit or as a controllable unit.
According to a further advantageous embodiment, the separator housing and the turbine housing are directly connected to each other, wherein the shaft is guided through an opening of a partition wall between the separator housing and the turbine housing. The internal combustion engine can thus be constructed in a more compact manner, since the turbine and the oil separator are combined to form a structured unit. The shaft is preferably sealed with respect to the partition wall, for example by means of an O-ring seal. Alternatively or additionally, the shaft may be rotatably supported on the partition wall by means of bearings. The partition wall may be constructed in a single piece or formed by means of two mutually adjacent walls of the separator housing and the turbine housing.
The above object is further achieved with a motor vehicle having the features of claim 4, having at least one internal combustion engine according to any one of the above-mentioned embodiments or any combination of at least two of these embodiments.
The advantages mentioned above in connection with the internal combustion engine are correspondingly connected with the motor vehicle. The motor vehicle may for example be a land vehicle, in particular a passenger vehicle or a utility vehicle.
Drawings
Further advantageous embodiments of the invention are disclosed in the dependent claims and in the following description of the drawings, in which:
FIG. 1 is a schematic illustration of an embodiment of an internal combustion engine according to the present invention, and
fig. 2 is a schematic illustration of the sub-assembly shown in fig. 1 and containing an oil separator and turbine.
Detailed Description
Identical components are always given the same reference numerals in the different figures, for which reason they are generally also described only once.
Fig. 1 is a schematic illustration of an embodiment of an internal combustion engine 1 according to the invention for a motor vehicle (not shown). The internal combustion engine 1 has a combustion engine 2, an intake manifold 3 and an exhaust passage 4, the intake manifold 3 being connected to the combustion engine 2, and the exhaust passage 4 being connected to the combustion engine 2.
Furthermore, the internal combustion engine 1 has an exhaust gas return system 5. The exhaust gas return system 5 has an exhaust gas return line 6, which exhaust gas return line 6 branches off from the exhaust gas duct 4 and which exhaust gas return line 6 leads to the intake manifold 3, and an exhaust gas cooling unit 7 is arranged on this exhaust gas return line 6.
Furthermore, the internal combustion engine 1 has a crankcase ventilation system 8. The crankcase ventilation system 8 has an oil mist separator 12, which oil mist separator 12 is connected to a crankcase 10 of the internal combustion engine 1 via a supply line 9 and to the intake manifold 3 via a discharge line 11. The oil mist separator 12 is additionally connected to the crankcase 10 via an oil discharge line 13.
Furthermore, the internal combustion engine 1 has a turbine 14, which turbine 14 has a turbine rotor shown in fig. 2 and a turbine housing 15 receiving the turbine rotor. The exhaust gas return line 6 is partly formed by a turbine casing 15, or the turbine casing 15 forms a line section of the exhaust gas return system 5. The exhaust gas cooling unit 7 is arranged upstream of the turbine housing 15 with respect to the exhaust gas flow through the exhaust gas return line 6.
The oil mist separator 12 is constructed as a centrifugal separator and has a separator rotor, which is shown in fig. 2 and which is connected in a rotationally fixed manner to the turbine rotor by means of a shaft shown in fig. 2, and a separator housing 16, which receives the separator rotor.
Fig. 2 is a schematic illustration of the sub-assembly shown in fig. 1 and containing the oil separator 12 and turbine 14. A separator rotor 17 of the oil mist separator 12 is shown, which separator rotor 17 is connected in a rotationally fixed manner to a turbine rotor 19 of the turbine 14 by means of a shaft 18. The separator housing 16 and the turbine housing 15 are directly connected to each other. The shaft 18 is guided through an opening (not shown) of a partition wall 20 between the separator housing 16 and the turbine housing 15.
List of reference numerals:
1 internal combustion engine
2 combustion engine
3 air intake manifold
4 exhaust passage
5 exhaust gas return system
6 exhaust gas return line
7 exhaust gas cooling unit
8 crankcase ventilation system
9 supply line
10 crankcase
11 discharge line
12 oil mist separator
13 oil discharge line
14 turbine
15 turbine casing
16 separator housing
17 separator rotor
18-shaft
19 turbine rotor
20 partition wall
Claims (4)
1. An internal combustion engine (1) for a motor vehicle, the internal combustion engine (1) having at least one exhaust gas return system (5) and at least one crankcase ventilation system (8), the at least one crankcase ventilation system (8) having at least one oil mist separator (12), the at least one oil mist separator (12) being connected to a crankcase (10) of the internal combustion engine (1) via a supply line (9) and to an intake manifold (3) of the internal combustion engine (1) via a discharge line (11),
it is characterized in that
At least one turbine (14), which at least one turbine (14) has at least one turbine rotor (19) and a turbine housing (15) receiving the turbine rotor (19), wherein the oil mist separator (12) has at least one centrifugal separator, which has a separator rotor (17) and a separator housing (16), which separator rotor (17) is connected to the turbine rotor (19) in a rotationally fixed manner by means of a shaft (18), which separator housing (16) receives the separator rotor (17), wherein the turbine housing (15) forms a line section of the exhaust gas return system (5).
2. The internal combustion engine (1) according to claim 1,
it is characterized in that
The exhaust gas return system (5) has at least one exhaust gas return line (6), the at least one exhaust gas return line (6) branching off from the exhaust gas duct (4) of the internal combustion engine (1) and the at least one exhaust gas return line (6) leading to the intake manifold (3), and the at least one exhaust gas return line (6) being formed in part by the turbine housing (15), and at least one exhaust gas cooling unit (7) being arranged on the at least one exhaust gas return line (6), wherein the exhaust gas cooling unit (7) is arranged upstream of the turbine housing (15) with respect to the exhaust gas flow through the exhaust gas return line (6).
3. The internal combustion engine (1) according to claim 1 or claim 2,
it is characterized in that
The separator housing (16) and the turbine housing (15) are directly connected to each other, wherein the shaft (18) is guided through an opening of a partition wall (20) between the separator housing (16) and the turbine housing (15).
4. A kind of motor-driven vehicle is disclosed,
it is characterized in that
At least one internal combustion engine (1) according to any one of the preceding claims.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019202342.8A DE102019202342B4 (en) | 2019-02-21 | 2019-02-21 | internal combustion engine and motor vehicle |
| DE102019202342.8 | 2019-02-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111594296A true CN111594296A (en) | 2020-08-28 |
Family
ID=72138905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010103598.2A Pending CN111594296A (en) | 2019-02-21 | 2020-02-20 | Internal combustion engine and motor vehicle |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111594296A (en) |
| DE (1) | DE102019202342B4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230086242A1 (en) * | 2021-09-21 | 2023-03-23 | Deere & Company | Internal combustion engine and crankcase ventilation system |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005069205A (en) | 2003-08-28 | 2005-03-17 | Nissan Diesel Motor Co Ltd | Exhaust emission recirculation device of turbo compound engine |
| DE202007005986U1 (en) | 2007-04-24 | 2008-09-04 | Mann+Hummel Gmbh | Combustion air and exhaust gas arrangement of an internal combustion engine |
| DE102007030277A1 (en) | 2007-06-28 | 2009-01-08 | Mann + Hummel Gmbh | Turbocharger for an internal combustion engine |
| WO2009105463A2 (en) | 2008-02-22 | 2009-08-27 | Borgwarner Inc. | Controlling exhaust gas flow divided between turbocharging and exhaust gas recirculating |
| DE202008016402U1 (en) | 2008-12-12 | 2010-04-22 | Mann + Hummel Gmbh | centrifugal |
| SE534773C2 (en) | 2010-04-09 | 2011-12-13 | Alfa Laval Corp Ab | Centrifugal separator located inside an internal combustion engine |
| CH703770A1 (en) | 2010-09-02 | 2012-03-15 | Alstom Technology Ltd | Method for flushing abgasrezirkulationsleitungen a gas turbine. |
| EP2522431B1 (en) | 2011-05-12 | 2013-12-25 | Alfa Laval Corporate AB | A device comprising a centrifugal separator |
| DE102013019095A1 (en) | 2013-11-14 | 2014-07-24 | Daimler Ag | Compressor i.e. radial compressor, for use in supercharger of internal combustion engine of motor vehicle i.e. passenger car, has centrifugal separator formed by compressor wheel, and duct extended in housing for discharging lubricant |
| EP3156114B1 (en) | 2015-10-14 | 2018-04-04 | Alfdex AB | A separator arrangement for cleaning gas |
| DE102016005948A1 (en) | 2016-05-13 | 2017-02-16 | Daimler Ag | Oil separator for crankcase ventilation of an internal combustion engine, in particular for a vehicle |
| KR101816429B1 (en) | 2016-08-10 | 2018-01-08 | 현대자동차주식회사 | Method for Removing EGR Impurity by using Air Blowing, Exhaust Gas Recirculation System and Vehicle thereof |
| DE102016220770A1 (en) | 2016-10-21 | 2018-04-26 | Elringklinger Ag | Separating device, motor device and deposition method |
-
2019
- 2019-02-21 DE DE102019202342.8A patent/DE102019202342B4/en active Active
-
2020
- 2020-02-20 CN CN202010103598.2A patent/CN111594296A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230086242A1 (en) * | 2021-09-21 | 2023-03-23 | Deere & Company | Internal combustion engine and crankcase ventilation system |
| US11680501B2 (en) * | 2021-09-21 | 2023-06-20 | Deere & Company | Internal combustion engine and crankcase ventilation system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102019202342A1 (en) | 2020-08-27 |
| DE102019202342B4 (en) | 2022-07-07 |
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