EP2191118A1 - Verfahren zum betreiben einer brennkraftmaschine - Google Patents
Verfahren zum betreiben einer brennkraftmaschineInfo
- Publication number
- EP2191118A1 EP2191118A1 EP08784645A EP08784645A EP2191118A1 EP 2191118 A1 EP2191118 A1 EP 2191118A1 EP 08784645 A EP08784645 A EP 08784645A EP 08784645 A EP08784645 A EP 08784645A EP 2191118 A1 EP2191118 A1 EP 2191118A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- engine
- internal combustion
- combustion engine
- rpm
- exhaust gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- 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
- F02D13/0269—Controlling the valves to perform a Miller-Atkinson cycle
-
- 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
- F02D13/0223—Variable control of the intake valves only
- F02D13/0234—Variable control of the intake valves only changing the valve timing only
-
- 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
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0002—Controlling intake air
- F02D41/0007—Controlling intake air for control of turbo-charged or super-charged engines
-
- 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
- F02B37/24—Control of the pumps by using pumps or turbines with adjustable guide vanes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/0002—Controlling intake air
- F02D2041/001—Controlling intake air for engines with variable valve actuation
-
- 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 a method for operating an internal combustion engine, in particular Otto engine or diesel engine, in particular a motor vehicle, wherein the closing times of intake valves of working cylinders of the internal combustion engine are selected according to a Miller cycle and wherein a variable turbine geometry of an exhaust gas turbocharger for varying a compression capacity of the exhaust gas turbocharger is actuated , according to the preamble of claim 1.
- VTG turbochargers with variable turbine geometry (VTG or VGT) also promises great potential for gasoline engines.
- VTG technology There are two main ways of improving VTG technology: On the one hand, the low-end torque (LET) of the engine can be significantly improved compared to a conventional ATL, or on the other hand, a significant increase in power compared to a conventional ATL can be achieved. ATL, whereby the engine has a comparable LET thanks to the VTG technology.
- VTG turbochargers which also have an integrated wastegate, are particularly suitable because they can be optimized very strongly for the lower engine speed range.
- the well-known Miller / Atkinson process offers significant advantages in terms of full-load fuel consumption in gasoline engines.
- the internal compression work of the engine is reduced by a late or early intake closing time related to the bottom dead center of a working piston. Since in the internal compression of the sucked cylinder filling one of the pressure increase occurring in the working cylinder corresponding heat arises, the compressed mixture has a high temperature at the ignition. The higher this temperature, the more sensitive the mixture is and the later it has to be ignited. However, the later the ignition angle has to be selected, the worse the engine efficiency becomes, which in turn leads to higher fuel consumption.
- the typical Miller control times reduce the internal compression work of the engine, resulting in less heating and firing angles. To ensure that the engine delivers the same power, a higher charge pressure must be applied in front of the intake valves. This external compression work has the advantage that the charge air to be cooled in a charge air cooler
- the "intake valve closes" (ES) time is delayed, for example.
- ES intake valve closes
- the charge pressure in the volume between the loader outlet and the engine inlet is to be controlled so that the boost pressure at each Miller operating point, i. each operating point in which the "Miller cycle” is used, the theoretical compression end pressure in the working cylinders of the internal combustion engine at the time intake valve closes corresponds.
- control optionally also control, come pressure and / or temperature and / or mass flow sensors or useful combination sensors of the three types of sensor used.
- DE 10 2006 003 842 A1 an internal combustion engine with an exhaust gas turbocharger with variable turbine geometry is known, which can also be operated with a Miller cycle.
- DE 199 05 636 A1 discloses a method for operating an internal combustion engine according to the Miller cycle, which can also take place in conjunction with a variable turbine geometry.
- the invention is based on the object, a method of o.g. To improve the way of exploiting the benefits of the Miller cycle
- a reduction of the effective compression ratio with correspondingly reduced combustion chamber temperature before ignition is achieved by selecting the closing time according to the Miller cycle such that at least one of the intake valves is closed after reaching a bottom dead center in the charge cycle of a working piston associated with this intake valve.
- a phase length of the opening time of at least one inlet valve 190 is 0 KW to 220 0 KW.
- a rotational speed n in [U / mi ⁇ ] is plotted on a horizontal axis 10
- a related effective engine load in [%] is plotted on a vertical axis 12.
- a first graph 14 limits a possible operating range of a conventional engine with the Miller cycle toward lowest engine load
- a second graph 16 limits a possible operating range of a conventional engine with the Miller cycle in the direction of highest engine load for the respective speed.
- the two graphs 14 and 16 enclose therebetween a first region 18 in which a conventional Miller cycle internal combustion engine can be operated such that the benefits of the Miller cycle, in particular reduced fuel consumption by offloading the compression work from the working cylinder, are usable.
- the internal combustion engine with such closing times for respective intake valves of working cylinders of the internal combustion engine according to a Miller cycle and at the same time with such a setting for the variable turbine geometry of a Turbine of an exhaust gas turbocharger is operated, that in the speed range from 1000 rev / min to 3500 rev / min and operating points above the second graph 16 in a second region 20 can be achieved.
- the Miller cycle and the VTG technology are optimally interconnected. Due to the potential for high boost pressures, which can be provided at a corresponding VTG design by a more efficient utilization of the exhaust gas energy compared to a conventional turbocharger, even from very low engine speeds ( ⁇ 1500 U / min), it is possible throughout Engine speed range to use the positive effects of the Miller cycle.
- a camshaft valve with fixed valve lift is provided on the intake side, the cam shape being adapted to the corresponding Miller method.
- the Miller method comes with late inlet closure (after UT of the working piston in the charge cycle), which leads to a phase length of 19O 0 KW to 220 0 KW.
- inlet side gas exchange phase length up to 240 ° CA, cam switching device, etc.
- the region 20 in the direction of low engine load 12 is limited by a first straight line 22, which corresponds to the equation
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)
- Supercharger (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007039210A DE102007039210A1 (de) | 2007-08-20 | 2007-08-20 | Verfahren zum Betreiben einer Brennkraftmaschine |
PCT/EP2008/005552 WO2009024213A1 (de) | 2007-08-20 | 2008-07-08 | Verfahren zum betreiben einer brennkraftmaschine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2191118A1 true EP2191118A1 (de) | 2010-06-02 |
Family
ID=39739450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08784645A Withdrawn EP2191118A1 (de) | 2007-08-20 | 2008-07-08 | Verfahren zum betreiben einer brennkraftmaschine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2191118A1 (de) |
DE (1) | DE102007039210A1 (de) |
WO (1) | WO2009024213A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010043920B4 (de) * | 2010-11-15 | 2014-09-11 | Ford Global Technologies, Llc | Verfahren zum Vermeiden von Turboladerschäden |
EP2837804A1 (de) * | 2013-08-13 | 2015-02-18 | Caterpillar Motoren GmbH & Co. KG | Betreiben von Verbrennungsmotoren |
DE102014006032A1 (de) | 2014-04-24 | 2015-10-29 | Mtu Friedrichshafen Gmbh | Verfahren zum Betrieb eines Verbrennungsmotors |
DE102018212247A1 (de) | 2018-07-24 | 2020-01-30 | Volkswagen Aktiengesellschaft | Verfahren zum Steuern und/oder Regeln des Betriebs eines Verbrennungsmotors, insbesondere eines Verbrennungsmotors eines Kraftfahrzeugs, insbesondere zumindest teilweise arbeitend nach dem Miller-Verfahren |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19905636A1 (de) | 1999-02-11 | 2000-03-30 | Daimler Chrysler Ag | Verfahren zur Brennraum-Ladungstemperaturabsenkung |
US7201121B2 (en) * | 2002-02-04 | 2007-04-10 | Caterpillar Inc | Combustion engine including fluidically-driven engine valve actuator |
US6651618B1 (en) * | 2002-05-14 | 2003-11-25 | Caterpillar Inc | Air and fuel supply system for combustion engine |
US7437874B2 (en) * | 2005-03-10 | 2008-10-21 | Detroit Diesel Corporation | System and method for backpressure compensation for controlling exhaust gas particulate emissions |
-
2007
- 2007-08-20 DE DE102007039210A patent/DE102007039210A1/de not_active Withdrawn
-
2008
- 2008-07-08 EP EP08784645A patent/EP2191118A1/de not_active Withdrawn
- 2008-07-08 WO PCT/EP2008/005552 patent/WO2009024213A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2009024213A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2009024213A1 (de) | 2009-02-26 |
DE102007039210A1 (de) | 2009-02-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69915093T2 (de) | Brennkraftmaschine | |
DE60200696T2 (de) | Viertakt Brennkraftmaschine für Kraftfahrzeug | |
EP2898207B1 (de) | Verfahren zum betreiben einer steuerzeit eines einlassventils einer brennkraftmaschine | |
EP2462328A1 (de) | Turboaufgeladene hubkolbenkraftmaschine mit angeschlossenem drucktank zur turbolochüberbrückung und verfahren zum betrieb derselben | |
WO2009056197A1 (de) | Brennkraftmaschine mit abgasturbolader und ladeluftkühler | |
DE102009038109A1 (de) | Aktive Kompressionsverhältnismodulation durch Phasenverstellung des Einlassventils und Klopfsensorrückkopplung | |
DE102011081844A1 (de) | Verfahren zum Betreiben einer aufgeladenen Brennkraftmaschine und Brennkraftmaschine zur Durchführung eines derartigen Verfahrens | |
DE102012213936A1 (de) | Aufgeladener Vier-Zylinder-Reihenmotor mit parallel angeordneten Turbinen und Verfahren zum Betreiben eines derartigen Vier-Zylinder-Reihenmotors | |
WO2009024213A1 (de) | Verfahren zum betreiben einer brennkraftmaschine | |
DE102007028522A1 (de) | Verfahren zum Betreiben einer aufgeladenen Brennkraftmaschine | |
EP3421762B1 (de) | Aufgeladene brennkraftmaschine | |
EP1338776B1 (de) | Viertakt-Ottomotor mit separat verstellbaren Nockenwellen sowie Steuerungsverfahren | |
DE4434777C1 (de) | Aufgeladener Mehrzylinder-Dieselmotor | |
DE102014019556A1 (de) | Verfahren zum Betreiben einer Verbrennungskraftmaschine für einen Kraftwagen | |
DE102012211527B4 (de) | Motorbetrieb eines Verbrennungsmotors zum Schutz des Abgasstrangs bei Hochleistung | |
WO2009024170A1 (de) | Verbrennungskraftmaschine mit nockengesteuertem variablen ventiltrieb | |
DE102014006032A1 (de) | Verfahren zum Betrieb eines Verbrennungsmotors | |
WO2013143687A1 (de) | Verfahren zum betreiben einer verbrennungskraftmaschine | |
EP1591651B1 (de) | Verfahren zur Erhöhung des Drehmomentes bei einer direkteinspritzenden Brennkraftmaschine | |
DE102019113741A1 (de) | Brennkraftmaschine mit variabler Auslassventilbetätigung und mit elektromotorischer oder mechanischer Aufladung | |
WO2016112935A1 (de) | Dieselmotor und verfahren zum betrieb eines dieselmotors | |
WO2007079510A2 (de) | Brennkraftmaschine | |
DE102012200012A1 (de) | Aufgeladene Brennkraftmaschine und Verfahren zum Betreiben einer derartigen Brennkraftmaschine | |
WO2018192821A1 (de) | Verfahren zum betreiben einer verbrennungskraftmaschine, insbesondere eines kraftfahrzeugs | |
AT526346B1 (de) | Verfahren zum Betreiben einer wasserstoffbetriebenen Brennkraftmaschine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20100322 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: GNEGEL, PAUL Inventor name: KUEHLMEYER, JENS Inventor name: HAGELSTEIN, DIRK |
|
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20120130 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: VOLKSWAGEN AKTIENGESELLSCHAFT |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20150203 |