CN101165330A - Method for operating an internal combustion engine with exhaust gas recirculation and internal combustion engine - Google Patents
Method for operating an internal combustion engine with exhaust gas recirculation and internal combustion engine Download PDFInfo
- Publication number
- CN101165330A CN101165330A CNA2007101807802A CN200710180780A CN101165330A CN 101165330 A CN101165330 A CN 101165330A CN A2007101807802 A CNA2007101807802 A CN A2007101807802A CN 200710180780 A CN200710180780 A CN 200710180780A CN 101165330 A CN101165330 A CN 101165330A
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- China
- Prior art keywords
- cylinder
- combustion engine
- internal
- exhaust gas
- shunting
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D21/00—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
- F02D21/06—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air
- F02D21/08—Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas peculiar to engines having other non-fuel gas added to combustion air the other gas being the exhaust gas of engine
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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
- F02M26/42—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
- F02M26/43—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 exhaust from only one cylinder or only a group of cylinders is directed to the intake of the engine
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D23/00—Controlling engines characterised by their being supercharged
-
- 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
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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
- F02M26/17—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
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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
- F02M26/22—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0276—Actuation of an additional valve for a special application, e.g. for decompression, exhaust gas recirculation or cylinder scavenging
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The invention relates to a method for operating an internal combustion engine with exhaust gas recirculation, in particular a turbocharged heavy-oil-operated diesel internal combustion engine, wherein a partial flow is taken out of the exhaust gas flow of the internal combustion engine, cooled in an exhaust gas cooler and returned for reducing harmful substances of the internal combustion engine. According to the invention, the cooled branched exhaust gases are recirculated directly into the cylinders of the internal combustion engine.
Description
Technical field
The present invention relates to a kind of method that is used to make the internal-combustion engine with exhaust gas recirculation, the especially turbo charged diesel engine that drives with heavy oil to realize operation as described in the preamble by claim 1.The invention still further relates to internal-combustion engine as described in the preamble in addition by claim 11.
Background technique
By putting into practice known turbo charged internal-combustion engine with exhaust gas recirculation.For turbo charged internal-combustion engine with exhaust gas recirculation, the release in the turbine of exhaust gas turbocharger of the exhaust flow of internal-combustion engine, the turbine driven compressor of exhaust gas turbocharger wherein, this compressor will be input to the combustion air compression of internal-combustion engine.In the upstream of the turbine of exhaust gas turbocharger, in the exhaust flow of internal-combustion engine, take out shunting, this shunting feeds back in the internal combustion air that has compressed and mixes with it.Pressurized air and waste gas shunting also mix in the upstream of cylinder of internal combustion engine thus in the upstream of internal-combustion engine.The waste gas that feeds back plays the effect of inert gas, reduces the combustion peak temperature in the cylinder of internal-combustion engine and therefore reduce to generate harmful matter.
Especially for diesel engine with heavy oil work, this is problematic by known exhaust gas recirculation in the practice, this is because include a large amount of pitch, ash content and sulphur in heavy oil, therefore when heavy oil combustion, produce residue, these residues shunting that the quilt of exhaust flow feeds back with may be deposited on the parts of guiding combustion air after the combustion air that has compressed mixes, thereby can make these functions of components of infringement.
This may cause continuous, the unacceptable operation deterioration of internal-combustion engine, and causes the very loaded down with trivial details upkeep operation on internal-combustion engine, especially cleaning process.
Summary of the invention
Therefore task of the present invention is to propose a kind of new method and a kind of new-type internal-combustion engine that is used to make the internal combustion engine operation with exhaust gas recirculation.This task is by finishing by the described method of claim 1.
Especially be suitable for the diesel engine that drives with heavy oil according to method of the present invention, according to said method, the shunting that is fed back according to exhaust gas recirculation of exhaust flow is non-directly to import in the cylinder of internal-combustion engine indirectly in other words.In according to method of the present invention, waste gas is mixed in the upstream of cylinder of internal-combustion engine with the combustion air that has compressed, the member of guiding combustion air is not polluted with regard to not needing.
According to a kind of favourable improvement project of the present invention, the shunting through cooling off of exhaust flow is in the cylinder that is introduced into quartastroke engine during the suction stroke, make in the suction stroke of each cylinder of internal-combustion engine-this or each the combustion air suction valve of direction motion-each cylinder from upper dead center towards lower dead centre when its piston is when at least one combustion air INO in this cylinder be closed before arriving lower dead centre, wherein after this or each combustion air suction valve are closed, during suction stroke, exactly when making pressure in the cylinder reach the stress level in the exhaust gas recirculation owing to the expansion of combustion air in cylinder or be reduced under the stress level in the exhaust gas recirculation, the shunting through cooling of exhaust flow entered in each cylinder.
When the pressure in the cylinder had reached the stress level in the exhaust gas recirculation, the recirculation that the shunting through cooling of exhaust flow is entered in each cylinder stopped.
Stipulate in claim 11 according to internal-combustion engine of the present invention.
Visible dependent claims of preferred improvement project of the present invention and following explanation.The embodiment of the invention is described in detail with reference to the accompanying drawings, but is not limited thereto.Accompanying drawing is depicted as:
Description of drawings
Fig. 1: be used to illustrate the P-V figure that makes the method for internal combustion engine operation according to of the present invention with exhaust gas recirculation.
Reference numerals list
1 operation point
2 operation points
3,3 ' operation point
4 operation points
5 operation points
6 operation points
7 operation points
8 operation points
10 high-pressure sections
11 ventilation parts
Embodiment
The present invention relates to a kind of method that internal-combustion engine, especially a kind of turbo charged diesel engine that drives with heavy oil are moved, this internal-combustion engine has exhaust gas recirculation.In this internal-combustion engine, make the exhaust flow of internal-combustion engine be input to turbocharger, wherein make exhaust flow release in the turbine of turbocharger.The compressor of the turbine drives exhaust gas turbocharger of exhaust gas turbocharger, this compressor make combustion air or the pure air compression that is input to internal-combustion engine.In exhaust gas recirculation, in the exhaust flow of internal-combustion engine, take out shunting in the upstream of the turbine of exhaust gas turbocharger, wherein make this shunting cooling and being fed back in gaseous effluent to reduce the harmful matter of internal-combustion engine.Wherein according to the present invention, make the exhaust gas recirculation through the shunting of cooling of exhaust flow directly enter into the cylinder of internal-combustion engine.
Below according to the example of quartastroke engine among Fig. 1, to being described in detail according to method of the present invention, wherein Fig. 1 has represented so-called P (pressure)-V (flow) figure of the cylinder of quartastroke engine.The work cycle of the cylinder of quartastroke engine is divided into four strokes, just so-called suction stroke, compression stroke, working stroke and exhaust stroke.
P-V figure shown in Figure 1 is divided into two parts in principle, just a so-called high-pressure section 10 and a so-called ventilation part 11.High-pressure section 10 has comprised compression stroke and working stroke, and wherein compression stroke is extended between operation point 1 and 2, and working stroke is extended between operation point 2 and 3,3 and 3 ', 3 ' and 4 and 4 and 1.Ventilation part 11 has comprised exhaust stroke and suction stroke, and wherein exhaust stroke is between operation point 1 and operation point 5, and suction stroke is then between operation point 6 and operation point 1.
For quartastroke engine, carry out during the suction stroke of each cylinder of internal-combustion engine according to the exhaust gas recirculation in the cylinder that directly enters into internal-combustion engine of the present invention, wherein in suction stroke, the piston of each cylinder is the motion of the direction towards lower dead centre UT (operation point 1) from upper dead center OT (operation point 6) when at least one combustion air INO.During suction stroke, before reaching lower dead centre UT, 7 places close in the operation point for this of each cylinder or each combustion air suction valve.
At this or each combustion air suction valve after 7 places, operation point close, the piston of each cylinder continues the direction motion to lower dead centre UT, wherein the combustion air that herein is sucked in the cylinder expands, so the pressure in the cylinder descends from the pressure p L of the combustion air that is sucked.
8 places, operation point in suction stroke, pressure in the cylinder reaches the stress level pA in the exhaust gas recirculation, wherein when the pressure in the cylinder had reached the stress level pA in the exhaust gas recirculation or drop under the stress level pA in the exhaust gas recirculation, the shunting of the cooling of exhaust flow was just directly imported in each cylinder of internal-combustion engine indirectly in other words by non-.
For this reason during suction stroke, at least one is attached troops to a unit in the waste gas INO of cylinder, exactly, when perhaps directly the pressure in cylinder has reached the stress level pA in the exhaust gas recirculation, perhaps after the time goes up pressure in cylinder and is reduced under the stress level pA the exhaust gas recirculation.
When the pressure in each cylinder has reached the stress level pA in the exhaust gas recirculation again, the feedback that waste gas is non-indirectly directly to be entered in the cylinder of internal-combustion engine in other words just is terminated, wherein this or in suction stroke before reaching lower dead centre UT, along with reaching of lower dead centre UT, perhaps also after reaching lower dead centre UT, also during compression process, can realize thus.This or each are attached troops to a unit closes in the waste gas suction valve of each cylinder.
Because in the zone of cylinder, almost there is not the pressure difference of what part, so can exhaust gas recirculation is non-directly to be entered in the cylinder of internal-combustion engine indirectly in other words making in the zone of the cylinder head of each cylinder or in the zone in cylinder liner.
According to a kind of favourable improvement project of the present invention, before being incorporated into gaseous effluent, it is transported to the waste gas washing apparatus from the shunting that exhaust flow is derived, so that reduce the danger that gaseous effluent is polluted.
Although the present invention at first is suitable for making the diesel engine operation that drives with heavy oil, the present invention also can be used in gasoline engine (Otto-Brennkraftmaschine).This method fuel type used with driving internal-combustion engine has nothing to do.
As mentioned above, in order to make in the directly non-in other words cylinder that is incorporated into internal-combustion engine indirectly of waste gas, each cylinder all is furnished with at least one waste gas suction valve.The waste gas suction valve can or mechanically be controlled by the mode of cam or electricity consumption or electronics, so that make its opening and closing according to mode of the present invention.
Claims (12)
1. the method that is used to make the internal-combustion engine with exhaust gas recirculation, the especially turbo charged diesel engine that drives with heavy oil to move, wherein from the exhaust flow of internal-combustion engine, take out shunting, this shunting is cooled off in gaseous effluent also to be fed back to reduce the harmful matter of internal-combustion engine, it is characterized in that the exhaust gas recirculation of described shunting through cooling off directly enters into the cylinder of internal-combustion engine.
2. by the described method of claim 1, it is characterized in that, the shunting through cooling off that makes described exhaust flow is in the cylinder that is input to quartastroke engine during the suction stroke, make in the suction stroke of each cylinder of internal-combustion engine, its piston motion of the direction from upper dead center towards lower dead centre when at least one combustion air INO in this cylinder, this of each cylinder or each combustion air suction valve were closed before arriving lower dead centre, wherein after this or each combustion air suction valve are closed, during suction stroke, promptly when making pressure in the cylinder reach the stress level in the exhaust gas recirculation owing to the expansion of combustion air in cylinder or be reduced under the stress level in the exhaust gas recirculation, the shunting through cooling of exhaust flow is input in each cylinder.
3. by the described method of claim 2, it is characterized in that, at least one is attached troops to a unit in the waste gas INO of each cylinder, exactly directly when the pressure in the cylinder be reduced to stress level in the exhaust gas recirculation when following or on the time after this.
4. by claim 2 or 3 described methods, it is characterized in that when the pressure in the cylinder had reached the stress level in the exhaust gas recirculation, the shunting through cooling that just stops exhaust flow fed back in each the cylinder.
5. by the described method of claim 4, it is characterized in that, after the lower dead centre in reaching suction stroke and thus during compression stroke, this or each are attached troops to a unit close for this reason in the waste gas suction valve of each cylinder.
6. by the described method of claim 4, it is characterized in that, when reaching the lower dead centre of suction stroke or before this and thus during suction stroke, this or each are attached troops to a unit close for this reason in the waste gas suction valve of each cylinder.
7. by each or multinomial described method in the claim 1 to 6, it is characterized in that, make in the zone of shunting in cylinder head of cooling, being input in the cylinder of internal-combustion engine of exhaust flow.
8. by each or multinomial described method in the claim 1 to 6, it is characterized in that, make in the zone of shunting in cylinder liner of cooling, being input in the cylinder of internal-combustion engine of exhaust flow.
9. by each or multinomial described method in the claim 1 to 8, it is characterized in that, make described shunting before it is introduced in gaseous effluent, flow to the waste gas washing apparatus, and clean therein.
10. by each or multinomial described method in the claim 1 to 9, it is characterized in that, from the exhaust flow of internal-combustion engine, take out described shunting in the upstream of the turbine of exhaust gas turbocharger.
11. have the internal-combustion engine of exhaust gas recirculation, especially turbo charged, with the diesel engine that heavy oil drives, have exhaust gas recirculation, it is characterized in that, the exhaust gas recirculation through the shunting of cooling is directly entered in the cylinder of internal-combustion engine.
12. by the described internal-combustion engine of claim 11, it is characterized in that each cylinder disposes at least one waste gas suction valve respectively, this waste gas suction valve can be unlocked and cuts out according to each or multinomial described method in the claim 1 to 10.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006048269A DE102006048269B4 (en) | 2006-10-12 | 2006-10-12 | Method for operating an internal combustion engine with exhaust gas recirculation and internal combustion engine |
| DE102006048269.7 | 2006-10-12 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101165330A true CN101165330A (en) | 2008-04-23 |
| CN101165330B CN101165330B (en) | 2011-06-08 |
Family
ID=38468658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101807802A Expired - Fee Related CN101165330B (en) | 2006-10-12 | 2007-10-12 | Method for operating an internal combustion engine with exhaust gas recirculation and internal combustion engine |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2008095683A (en) |
| KR (1) | KR101345827B1 (en) |
| CN (1) | CN101165330B (en) |
| DE (1) | DE102006048269B4 (en) |
| FI (1) | FI124647B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234864A (en) * | 2013-09-12 | 2014-12-24 | 摩尔动力(北京)技术股份有限公司 | Gas closing engine |
| CN106481463A (en) * | 2015-08-24 | 2017-03-08 | 罗伯特·博世有限公司 | Method and apparatus for internal combustion engine of the operation with waste gas recirculation portion |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008061399A1 (en) | 2008-12-10 | 2010-06-17 | Man Diesel Se | Internal combustion engine with two exhaust gas turbochargers connected in series |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2061622A1 (en) * | 1970-12-15 | 1972-07-06 | Daimler-Benz Ag, 7000 Stuttgart | Internal combustion engine |
| AT402432B (en) * | 1988-02-25 | 1997-05-26 | Avl Verbrennungskraft Messtech | INTERNAL COMBUSTION ENGINE |
| JPH05157008A (en) * | 1991-11-29 | 1993-06-22 | Mazda Motor Corp | Engine |
| JPH08319902A (en) * | 1995-05-25 | 1996-12-03 | Mitsubishi Motors Corp | Egr device for engine |
| DE19541362C1 (en) * | 1995-11-07 | 1997-01-23 | Mtu Friedrichshafen Gmbh | Exhaust gas feedback system for turbocharged diesel engine |
| JP2000038962A (en) * | 1998-07-23 | 2000-02-08 | Isuzu Motors Ltd | Egr cooler and egr device with egr cooler |
| AU2003277286A1 (en) * | 2002-10-04 | 2004-05-04 | Honeywell International Inc. | Internal combustion engine system |
| JP4254504B2 (en) * | 2002-12-17 | 2009-04-15 | トヨタ自動車株式会社 | Internal combustion engine |
| DE10324988A1 (en) * | 2003-06-03 | 2004-12-30 | Man B & W Diesel Ag | Exhaust gas recirculation device for reciprocating piston engines has valve-controlled duct in each cylinder leading to common exhaust gas collection vessel |
| JP4098684B2 (en) * | 2003-08-13 | 2008-06-11 | 本田技研工業株式会社 | Control device for compression ignition internal combustion engine |
| JP2006144711A (en) * | 2004-11-22 | 2006-06-08 | Mazda Motor Corp | Intake and exhaust controller for four cycle gasoline engine |
-
2006
- 2006-10-12 DE DE102006048269A patent/DE102006048269B4/en not_active Expired - Fee Related
-
2007
- 2007-07-10 KR KR1020070069152A patent/KR101345827B1/en active IP Right Grant
- 2007-08-06 FI FI20070588A patent/FI124647B/en not_active IP Right Cessation
- 2007-10-04 JP JP2007260651A patent/JP2008095683A/en active Pending
- 2007-10-12 CN CN2007101807802A patent/CN101165330B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234864A (en) * | 2013-09-12 | 2014-12-24 | 摩尔动力(北京)技术股份有限公司 | Gas closing engine |
| CN104234864B (en) * | 2013-09-12 | 2016-03-16 | 摩尔动力(北京)技术股份有限公司 | Gas closed engine |
| CN106481463A (en) * | 2015-08-24 | 2017-03-08 | 罗伯特·博世有限公司 | Method and apparatus for internal combustion engine of the operation with waste gas recirculation portion |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20080033844A (en) | 2008-04-17 |
| DE102006048269A1 (en) | 2008-04-17 |
| FI124647B (en) | 2014-11-28 |
| FI20070588A0 (en) | 2007-08-06 |
| KR101345827B1 (en) | 2013-12-30 |
| DE102006048269B4 (en) | 2012-10-04 |
| FI20070588A (en) | 2008-04-13 |
| CN101165330B (en) | 2011-06-08 |
| JP2008095683A (en) | 2008-04-24 |
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