EP1481150A1 - Zylinderkopf f r eine brennkraftmaschine - Google Patents
Zylinderkopf f r eine brennkraftmaschineInfo
- Publication number
- EP1481150A1 EP1481150A1 EP20030742498 EP03742498A EP1481150A1 EP 1481150 A1 EP1481150 A1 EP 1481150A1 EP 20030742498 EP20030742498 EP 20030742498 EP 03742498 A EP03742498 A EP 03742498A EP 1481150 A1 EP1481150 A1 EP 1481150A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- combustion chamber
- inlet
- internal combustion
- combustion engine
- fuel
- 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
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/08—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition
- F02B23/10—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder
- F02B23/104—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder the injector being placed on a side position of the 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
- F02B31/00—Modifying induction systems for imparting a rotation to the charge in the cylinder
- F02B31/04—Modifying induction systems for imparting a rotation to the charge in the cylinder by means within the induction channel, e.g. deflectors
- F02B31/06—Movable means, e.g. butterfly valves
- F02B31/08—Movable means, e.g. butterfly valves having multiple air inlets, i.e. having main and auxiliary intake passages
- F02B31/085—Movable means, e.g. butterfly valves having multiple air inlets, i.e. having main and auxiliary intake passages having two inlet valves
-
- 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
- F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
- F02B23/08—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition
- F02B23/10—Other engines characterised by special shape or construction of combustion chambers to improve operation with positive ignition with separate admission of air and fuel into cylinder
- F02B2023/108—Swirl flow, i.e. the axis of rotation of the main charge flow motion is vertical
-
- 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
- F02B2031/006—Modifying induction systems for imparting a rotation to the charge in the cylinder having multiple air intake valves
-
- 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
- F02B75/00—Other engines
- F02B75/12—Other methods of operation
- F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
-
- 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
- F02B2275/18—DOHC [Double overhead camshaft]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/26—Pistons having combustion chamber in piston head
-
- 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 cylinder head for an internal combustion engine according to the features of the preamble of patent claim 1.
- Gasoline engines with direct injection are the focus of the development work of many automobile manufacturers. With all currently used gasoline direct injection methods - jet-guided, wall-guided, air-guided - it must be ensured that the fuel-air mixture ignites reliably even at the lowest injection rates. Particularly in the stratified charge mode aimed at at partial load ( ⁇ »1), in which the injection timing, in contrast to homogeneous operation, is shifted from the intake stroke to the compression stroke, the time until the ignition is shortened for good mixture preparation. It is therefore all the more necessary, on the one hand, to achieve an intimate mixing of fuel and combustion air within the charge cloud by means of a corresponding charge movement and, on the other hand, to ensure that this mixture cloud is transported to the ignition site.
- swirl or tumble flaps are known from the prior art, which are arranged in the inlet duct of a cylinder head and support the preparation of the mixture cloud and the supply of the concentrated mixture to the spark plug. While a swirl flap generates a charge movement in the cylinder around the cylinder vertical axis with a swirl center to the cylinder center axis, a charge movement around the cylinder transverse axis can be achieved through a tumble flap.
- an internal combustion engine is known from DE 44 45 777 AI, in which a swirl control valve provided with a recess is arranged in the intake duct of the cylinder head to generate a tumble air flow.
- the object of the invention is to provide a charge movement device in the inlet duct of the vehicle, in particular for a four valve engine with gasoline direct injection To create internal combustion engine that reliably supports mixture preparation in the combustion chamber.
- the adjustable flap element according to the invention is characterized in that, in its closed state, two open subchannel cross sections remain, via which the combustion air enters the combustion chamber of the internal combustion engine with the formation of a double swirl flow. This ensures intensive mixture preparation, which is particularly necessary for stratified charge operation.
- the charge movement device is characterized in that the flap element is essentially rectangular in shape, while the inlet duct is designed in the shape of a cross-oval, so that when the flap position is closed, two arcuate partial duct cross sections remain, via which the combustion air flow enters the combustion chamber of the internal combustion engine.
- a piston recess is provided on the end of the piston facing the combustion chamber, via which the fuel-air mixture reaches the ignition point in a wall-guided manner.
- FIG. 1 shows a cross section through a cylinder head of an internal combustion engine
- FIG. 2 shows a flap element in the inlet duct of an internal combustion engine
- Fig. 3 is a schematic representation of the mixture transport to the ignition site
- Fig. 4 + 5 is a plan view of a piston with a schematic representation of the
- Fig. 6 shows the flap element and Fig. 7 shows a map to show the different positions of the flap element.
- the four-valve cylinder head 2 has two intake valves 4 (only one intake valve can be seen in the sectional view) and two exhaust valves 6 (only one exhaust valve can be seen). Both the inlet and the outlet valves 4, 6 each monitor a channel 10 to 13 leading to a combustion chamber 8, via which the combustion air is supplied to the combustion chamber 8 in a known manner and the exhaust gases produced during combustion are removed.
- the two inlet ducts, hereinafter referred to as branch pipes 10, 11, are seen upstream from the combustion chamber 14 and brought together to form a common duct 14, in which a flap element 16 fastened to a shaft 17 is arranged, which is described in more detail below.
- An injection valve 18 is also accommodated in the cylinder head 2, the fuel jet of which is directed directly into the combustion chamber 8 of the internal combustion engine.
- a cylinder space 20 adjoins the combustion chamber 8, in which a piston 24 provided with a recess 22 can be moved and controlled via a crankshaft (not shown).
- the fuel mixture supplied to the combustion chamber 8 is in the middle of the Ignition device 26 arranged in the combustion chamber roof, which is shown only schematically in the drawings as the ignition location, ignites.
- the channel section 14 has a transverse oval shape, while the flap element arranged in the channel section 14, hereinafter referred to as swirl flap 16, is essentially rectangular.
- a double swirl flow 28 is generated, which produces intensive mixing with the fuel cloud 30 injected into the combustion chamber 8.
- the mixture cloud is, as shown with reference to FIGS. 3a to 3c, guided at the end of the compression stroke in the piston recess 22 to the ignition location 26 and ignited there.
- the swirl flap 16 is steplessly adjustable between the "open” position and the "closed” position with the aid of the shaft 17.
- a map as shown in FIG. 7 is stored in a control unit, by means of which the position of the swirl flap 16 can be controlled as a function of the load and speed of the internal combustion engine.
- the swirl flap 16 In a lower load range A with a fuel-air ratio ⁇ »1, the swirl flap 16 is completely closed to generate a double swirl flow; maximum swirl is generated.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10207914A DE10207914A1 (de) | 2002-02-23 | 2002-02-23 | Zylinderkopf für eine Brennkraftmaschine |
DE10207914 | 2002-02-23 | ||
PCT/EP2003/000626 WO2003071110A1 (de) | 2002-02-23 | 2003-01-23 | Zylinderkopf für eine brennkraftmaschine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1481150A1 true EP1481150A1 (de) | 2004-12-01 |
Family
ID=27674926
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20030742498 Ceased EP1481150A1 (de) | 2002-02-23 | 2003-01-23 | Zylinderkopf f r eine brennkraftmaschine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1481150A1 (de) |
DE (1) | DE10207914A1 (de) |
WO (1) | WO2003071110A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2853353B1 (fr) * | 2003-04-04 | 2006-09-08 | Peugeot Citroen Automobiles Sa | Moteur a combustion interne, a essence et a allumage commande |
DE102004021363B4 (de) * | 2004-04-30 | 2013-07-25 | Audi Ag | Verfahren zur Steuerung der Zylinderinnenströmung (Einlassdrall) an einer Brennkraftmaschine und direkt einspritzende Brennkraftmaschine |
AT511721B1 (de) * | 2011-11-03 | 2013-02-15 | Avl List Gmbh | Einlassstrang für eine brennkraftmaschine |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5423300A (en) * | 1992-02-28 | 1995-06-13 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Internal combustion engine |
JPH06248959A (ja) * | 1993-03-02 | 1994-09-06 | Nissan Motor Co Ltd | 内燃機関の吸気装置 |
JPH07119472A (ja) * | 1993-10-19 | 1995-05-09 | Fuji Heavy Ind Ltd | エンジンの吸気装置 |
JP3332177B2 (ja) | 1993-12-22 | 2002-10-07 | 日産自動車株式会社 | 火花点火式内燃機関 |
WO2002038924A1 (fr) * | 2000-10-30 | 2002-05-16 | Hitachi, Ltd. | Moteur a cylindre a injection et son procede de commande |
-
2002
- 2002-02-23 DE DE10207914A patent/DE10207914A1/de not_active Withdrawn
-
2003
- 2003-01-23 EP EP20030742498 patent/EP1481150A1/de not_active Ceased
- 2003-01-23 WO PCT/EP2003/000626 patent/WO2003071110A1/de not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO03071110A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE10207914A1 (de) | 2003-09-04 |
WO2003071110A1 (de) | 2003-08-28 |
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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: 20040923 |
|
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 HU IE IT LI LU MC NL PT SE SI SK TR |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: UNGER, THORSTEN Inventor name: TRAN, VAN-KHANH Inventor name: NAGEL, NILS Inventor name: MUELLER, STEPHAN Inventor name: EBERL, MARKUS Inventor name: BOCK, RAINER |
|
17Q | First examination report despatched |
Effective date: 20070402 |
|
R17C | First examination report despatched (corrected) |
Effective date: 20070502 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
18R | Application refused |
Effective date: 20080321 |