DE102006021456A1 - Internal-combustion engine e.g. petrol engine, for motor vehicle, has charging device integrated into cooling water circuit such that charging device is surrounded by cooling water of water circuit - Google Patents
Internal-combustion engine e.g. petrol engine, for motor vehicle, has charging device integrated into cooling water circuit such that charging device is surrounded by cooling water of water circuit Download PDFInfo
- Publication number
- DE102006021456A1 DE102006021456A1 DE102006021456A DE102006021456A DE102006021456A1 DE 102006021456 A1 DE102006021456 A1 DE 102006021456A1 DE 102006021456 A DE102006021456 A DE 102006021456A DE 102006021456 A DE102006021456 A DE 102006021456A DE 102006021456 A1 DE102006021456 A1 DE 102006021456A1
- Authority
- DE
- Germany
- Prior art keywords
- combustion engine
- internal combustion
- cooling water
- water circuit
- engine according
- 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.)
- Ceased
Links
Classifications
-
- 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
- F02B33/32—Engines with pumps other than of reciprocating-piston type
- F02B33/34—Engines with pumps other than of reciprocating-piston type with rotary pumps
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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
- 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
- F02B29/045—Constructional details of the heat exchangers, e.g. pipes, plates, ribs, insulation, materials, or manufacturing and assembly
- F02B29/0462—Liquid cooled heat exchangers
-
- 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
- F02B29/045—Constructional details of the heat exchangers, e.g. pipes, plates, ribs, insulation, materials, or manufacturing and assembly
- F02B29/0475—Constructional details of the heat exchangers, e.g. pipes, plates, ribs, insulation, materials, or manufacturing and assembly the intake air cooler being combined with another device, e.g. heater, valve, compressor, filter or EGR cooler, or being assembled on a special engine location
-
- 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
- F02B37/04—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump
- F02B37/10—Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump at least one pump being alternatively or simultaneously driven by exhaust and other drive, e.g. by pressurised fluid from a reservoir or an engine-driven pump
-
- 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
- F02B39/005—Cooling of pump drives
-
- 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
- F02B39/04—Mechanical drives; Variable-gear-ratio drives
-
- 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
Abstract
Description
Die Erfindung betrifft eine Brennkraftmaschine, insbesondere Ottomotor, insbesondere für ein Kraftfahrzeug, mit wenigstens einem Aufladeaggregat zum Komprimieren von Verbrennungsluft und mit einem Kühlwasserkreislauf zum Kühlen der Ladeluft, gemäß dem Oberbegriff des Patentanspruchs 1.The The invention relates to an internal combustion engine, in particular gasoline engine, especially for a motor vehicle, with at least one supercharger for compressing of combustion air and with a cooling water circuit for cooling the Charge air, according to the generic term of claim 1
Beim bekannten Miller-Cycle wird der Zeitpunkt "Einlassventil schließt" (ES) nach spät verschoben. Auf diese Weise wird bereits im Zylinder befindliches Frischgas z.T. wieder ausgeschoben. Dies bedeutet einen Füllungsnachteil, der aber über eine Aufladung mit einem geeigneten Ladedruck kompensiert werden kann. Dabei ist der Ladedruck im Volumen zwischen Laderausgang und Motoreinlass so zu regeln, dass der Ladedruck in jedem Miller-Betriebspunkt, d.h. jeder Betriebspunkt in dem der "MillerCycle" zur Anwendung kommt, dem theoretischen Verdichtungsenddruck in den Arbeitszylindern der Brennkraftmaschine zum Zeitpunkt Einlassventil schließt entspricht. Für die Regelung, wahlweise auch Steuerung, kommen Druck- und/oder Temperatur- und/oder Massenstromsensoren oder sinnvolle Kombisensoren der drei angesprochenen Sensortypen zum Einsatz.At the known Miller cycle, the time "intake valve closes" (ES) is postponed. In this way is already in-cylinder fresh gas z.T. pushed out again. This means a filling disadvantage, but over one Charging can be compensated with a suitable boost pressure. The boost pressure is in the volume between the loader outlet and engine inlet so that the boost pressure at each Miller operating point, i. every operating point in which the "MillerCycle" is used, the theoretical compression pressure in the working cylinders of the Internal combustion engine at the time intake valve closes corresponds. For the Control, optionally also control, come pressure and / or temperature and / or mass flow sensors or useful combination sensors of the three addressed sensor types are used.
Das theoretische Potenzial vergrößert sich bei gleich bleibender Austrittstemperatur aus dem Ladeluftkühler mit steigendem Druckverhältnis des Aufladeaggregates. Herkömmliche Ladeluft-Systeme sind aber in der Kühlleistung begrenzt, da bei großen Ladelufttemperaturen sehr große Kühlnetzflächen erforderlich sind, die in Fahrzeugen aus Platz- und Kostengründen nicht unterzubringen sind.The theoretical potential increases at Constant outlet temperature from the intercooler with increasing pressure ratio of the charging unit. conventional Charge air systems but are in the cooling capacity limited, because at large Charge air temperatures very large Cooling network surfaces required are that can not be accommodated in vehicles due to space and cost reasons.
Der Erfindung liegt die Aufgabe zugrunde, eine Brennkraftmaschine der o.g. Art hinsichtlich Schadstoffausstoß und der Ausnutzung des Miller-Cycle-Verfahrens zu verbessern.Of the Invention is the object of an internal combustion engine of above-mentioned Type with regard to pollutant emissions and the exploitation of the Miller cycle process to improve.
Diese Aufgabe wird erfindungsgemäß durch eine Brennkraftmaschine der o.g. Art mit den in Anspruch 1 gekennzeichneten Merkmalen gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den weiteren Ansprüchen beschrieben.These The object is achieved by a Internal combustion engine o.g. Type with the characterized in claim 1 Characteristics solved. Advantageous embodiments of the invention are in the other claims described.
Dazu ist es bei einer Brennkraftmaschine der o.g. Art erfindungsgemäß vorgesehen, dass das Aufladeaggregat in den Kühlwasserkreislauf der Ladeluftkühlung derart integriert ist, dass das Aufladeaggregat vom Kühlwasser des Kühlwasserkreislaufes der Ladeluftkühlung umgeben ist.To it is in an internal combustion engine o.g. Art provided according to the invention, that the supercharger in the cooling water circuit of the intercooler so is integrated, that the supercharger from the cooling water of the cooling water circuit of Intercooling is surrounded.
Dies hat den Vorteil, dass durch eine ausreichend dimensionierte Ladeluftkühlung die Verdichtungstemperatur zum Zeitpunkt Einlassventil schließt und damit die Verdichtungsendtemperatur abgesenkt wird. Die insgesamt abgesenkten Prozesstemperaturen verringern die Klopfempfindlichkeit und ermöglichen damit das Einstellen früherer Zündwinkel mit besseren Motorwirkungsgraden.This has the advantage that by a sufficiently sized charge air cooling the Compression temperature at the time intake valve closes and thus the compression end temperature is lowered. The total lowered Process temperatures reduce knock sensitivity and allow thus setting earlier firing angle with better engine efficiencies.
Beispielsweise ist wenigstens ein mit dem Kühlwasserkreislauf verbundener Ladeluftkühler vorgesehen, wobei optional das Aufladeaggregat in den Ladeluftkühler integriert ist.For example is at least one with the cooling water circuit connected intercooler provided optionally with the supercharger integrated into the intercooler is.
Zweckmäßigerweise ist das Aufladeaggregat ein mechanisch angetriebener Verdichter oder ein Verdichter eines Abgasturboladers.Appropriately, the supercharger is a mechanically driven compressor or a compressor of an exhaust gas turbocharger.
Eine mehrstufige Aufladung erzielt man dadurch, dass zusätzlich stromauf und/oder stromab des Aufladeaggregates wenigstens ein zusätzliches Aufladeaggregat angeordnet ist.A Multi-stage charging is achieved by additionally upstream and / or downstream of the supercharger at least one additional supercharger is arranged.
Zweckmäßigerweise ist das wenigstens eine zusätzliche Aufladeaggregat ein mechanisch angetriebener Verdichter oder ein Verdichter eines Abgasturboladers.Appropriately, is that at least one extra Charger a mechanically driven compressor or a Compressor of an exhaust gas turbocharger.
Optional sind wenigstens zwei zusätzliche Aufladeaggregate vorgesehen, wobei wenigstens eines der zusätzlichen Aufladeaggregate ein mechanisch angetriebener Verdichter und/oder wenigstens eines der zusätzlichen Aufladeaggregate ein Verdichter eines Abgasturboladers ist.optional There are at least two additional charging units provided, wherein at least one of the additional charging units a mechanically driven compressor and / or at least one of additional Charging a compressor of an exhaust gas turbocharger is.
Zweckmäßigerweise weist die Brennkraftmaschine eine Betätigungseinrichtung für Einlassventile auf, welche derart ausgebildet ist, dass diese die Einlassventile wenigstens zeitweise während des Betriebs der Brennkraftmaschine zum Ausführen eines Miller-Cycle in Arbeitszylindern der Brennkraftmaschine verspätet schließt.Appropriately, the internal combustion engine has an actuator for intake valves which is designed such that these intake valves at least temporarily during the operation of the internal combustion engine to perform a Miller cycle in Working cylinders of the internal combustion engine late closes.
Beispielsweise schließen die Einlassventile jeweils um einen Kurbelwinkel von +30°KW bis +80°KW nach einem unteren Totpunkt im Ansaugtakt von Arbeitskolben der Arbeitszylinder.For example shut down the intake valves each by a crank angle of + 30 ° KW to + 80 ° KW after a bottom dead center in the intake stroke of working piston of the working cylinder.
Die Erfindung wird im folgenden anhand der Zeichnung näher erläutert. Diese zeigt inThe The invention will be explained in more detail below with reference to the drawing. These shows in
Die
in
In
Die
Brennkraftmaschine ist beispielsweise ein Ottomotor, vorzugsweise
mit DI-Technologie. Die Besonderheit liegt darin, dass der Lader
Ob
das Kühlwasser
des Kühlwasserkreislaufs
Daher
ist der mechanisch angetriebene Lader
Neben
den brennverfahrenstechnischen Vorteilen durch frühere Zündwinkel
ergibt sich ein weiterer Vorteil durch die Kühlung der Ladeluft während des
Verdichtungsprozesses. Die starke Laderkühlung führt zu einer Annäherung an
eine thermodynamisch günstige
isotherme Verdichtung. Im Vergleich zu einer adiabaten Verdichtung
verringert sich die Leistungsaufnahme des Kompressors
Handelt
es sich bei dem mechanisch angetriebenem Aufladeaggregat
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006021456A DE102006021456A1 (en) | 2006-05-09 | 2006-05-09 | Internal-combustion engine e.g. petrol engine, for motor vehicle, has charging device integrated into cooling water circuit such that charging device is surrounded by cooling water of water circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006021456A DE102006021456A1 (en) | 2006-05-09 | 2006-05-09 | Internal-combustion engine e.g. petrol engine, for motor vehicle, has charging device integrated into cooling water circuit such that charging device is surrounded by cooling water of water circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102006021456A1 true DE102006021456A1 (en) | 2007-11-15 |
Family
ID=38579860
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102006021456A Ceased DE102006021456A1 (en) | 2006-05-09 | 2006-05-09 | Internal-combustion engine e.g. petrol engine, for motor vehicle, has charging device integrated into cooling water circuit such that charging device is surrounded by cooling water of water circuit |
Country Status (1)
Country | Link |
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DE (1) | DE102006021456A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8752531B2 (en) * | 2009-09-25 | 2014-06-17 | James E. Bell | Supercharger cooling |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2384251A (en) * | 1943-01-14 | 1945-09-04 | Wright Aeronautical Corp | Liquid cooled supercharger |
DE10001063A1 (en) * | 2000-01-13 | 2001-07-19 | Daimler Chrysler Ag | Mechanically driven compressor for internal combustion engine, forming intermediate cavity in casing wall, through which coolant flows |
US6279550B1 (en) * | 1996-07-17 | 2001-08-28 | Clyde C. Bryant | Internal combustion engine |
EP1191206A2 (en) * | 2000-09-21 | 2002-03-27 | Caterpillar Inc. | Interstage cooling system of a multi-compressor turbocharger, engine and turbocharger comprising such a cooling system, and method of operating the turbocharger |
-
2006
- 2006-05-09 DE DE102006021456A patent/DE102006021456A1/en not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2384251A (en) * | 1943-01-14 | 1945-09-04 | Wright Aeronautical Corp | Liquid cooled supercharger |
US6279550B1 (en) * | 1996-07-17 | 2001-08-28 | Clyde C. Bryant | Internal combustion engine |
DE10001063A1 (en) * | 2000-01-13 | 2001-07-19 | Daimler Chrysler Ag | Mechanically driven compressor for internal combustion engine, forming intermediate cavity in casing wall, through which coolant flows |
EP1191206A2 (en) * | 2000-09-21 | 2002-03-27 | Caterpillar Inc. | Interstage cooling system of a multi-compressor turbocharger, engine and turbocharger comprising such a cooling system, and method of operating the turbocharger |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8752531B2 (en) * | 2009-09-25 | 2014-06-17 | James E. Bell | Supercharger cooling |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
R012 | Request for examination validly filed |
Effective date: 20130306 |
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R002 | Refusal decision in examination/registration proceedings | ||
R003 | Refusal decision now final |