DE19957461A1 - Swirl channels for combustion chambers in IC engines extend from cylinder edge to combustion chamber with tangential entry into combustion chamber aperture - Google Patents

Swirl channels for combustion chambers in IC engines extend from cylinder edge to combustion chamber with tangential entry into combustion chamber aperture

Info

Publication number
DE19957461A1
DE19957461A1 DE19957461A DE19957461A DE19957461A1 DE 19957461 A1 DE19957461 A1 DE 19957461A1 DE 19957461 A DE19957461 A DE 19957461A DE 19957461 A DE19957461 A DE 19957461A DE 19957461 A1 DE19957461 A1 DE 19957461A1
Authority
DE
Germany
Prior art keywords
combustion chamber
combustion
swirl
engines
cylinder edge
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
Application number
DE19957461A
Other languages
German (de)
Inventor
Adolf Filmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19957461A priority Critical patent/DE19957461A1/en
Publication of DE19957461A1 publication Critical patent/DE19957461A1/en
Ceased legal-status Critical Current

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
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0618—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston having in-cylinder means to influence the charge motion
    • F02B23/0624—Swirl flow
    • 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
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0618—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston having in-cylinder means to influence the charge motion
    • F02B23/0627—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston having in-cylinder means to influence the charge motion having additional bores or grooves machined into the piston for guiding air or charge flow to the piston bowl
    • 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
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0672—Omega-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder center axis
    • 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
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0678—Unconventional, complex or non-rotationally symmetrical shapes of the combustion space, e.g. flower like, having special shapes related to the orientation of the fuel spray jets
    • 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
    • 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
    • F02B2275/14—Direct injection into combustion chamber
    • 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)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

The swirl channels (4) are located in piston and cylinder head, and extend from the cylinder edge (6) to the combustion chamber (1), with tangential entry into the combustion chamber aperture (3). The channels are circular, with increasing profile, different profiles and different number. The swirl channel entry is arranged, so that the combustion chamber neck (2) remains smooth so as not to obstruct the combustion gas flow. The system is suitable for Diesel engines and lean-mix petrol engines.

Description

Drallkanäle für Verbrennungsmotore - Brennraum Drallkanäle (4) von außen nach innen zum Brennraum (1), mit tangentialen Eintritt in den Brennraum (1), im Kolben und Zylinderkopf (8), für Verbrennungsmotore.Swirl ducts for internal combustion engines - combustion chamber Swirl ducts ( 4 ) from the outside in to the combustion chamber ( 1 ), with tangential entry into the combustion chamber ( 1 ), in the piston and cylinder head ( 8 ), for internal combustion engines.

Speziell für die in der Zeichnung dargestellten Drallkanäle, in ihrer Form (Nut, Nocken, winkelig), Richtung, Anzahl (von 1 bis unendlich), und tangentialen Eintritt in den Brennraum (1) (Brennraummundung (3)).Specially for the swirl channels shown in the drawing, in their shape (groove, cam, angular), direction, number (from 1 to infinity), and tangential entry into the combustion chamber ( 1 ) (combustion chamber mouth ( 3 )).

Zum Beispiel: Die Drallkanäle beginnen etwa 5 mm von außen, von 0 bis 3,5 mm tief und 4 mm Durchmesser zur Brennraummündung (3). Der Eintritt des Drallkanals (4) darf den Brennraumhals (2) nicht verletzen, er muß glatt sein, um die ausströmenden Brenngase ungehindert ausströmen zu lassen.For example: The swirl channels begin about 5 mm from the outside, from 0 to 3.5 mm deep and 4 mm in diameter to the combustion chamber mouth ( 3 ). The entry of the swirl duct ( 4 ) must not injure the combustion chamber neck ( 2 ), it must be smooth in order to allow the outflowing fuel gases to flow out unhindered.

Die Drallkanäle müssen gefräst, sehr glatt und eventuell ver­ gütet ausgeführt werden.The swirl channels must be milled, very smooth and possibly ver be performed well.

Anwendbar für Dieselmotore mit Direkteinspritzung und für Benzinmagermotore.Applicable for diesel engines with direct injection and for Lean petrol engines.

Ideal wäre es, wenn man den Brennraum (1) und die Drallkanäle (3) in den Zylinderkopf integrieren (Vierventiltechnik) könnte. Es ergäben sich von selbst sehr viele Vorteile.It would be ideal if the combustion chamber ( 1 ) and the swirl channels ( 3 ) could be integrated into the cylinder head (four-valve technology). There would be many advantages by itself.

Saubere Abgase als bei den bisherigen Motoren durch höhere Turbolenz und Temperatur, leichtere Koben, ruhiger Motorlauf, höhere Temperaturen im Fahrgastraum, längere Lebensdauer des Motors, kleinere Belastung des Motoröls (Temperatur), längere Ölwechselzeiten, höhere Verdichtung, höherer Wirkungsgrad usw. Der Brennraum (1) müßte, wie beim Wirbelkammermotor aus spezi­ ellem Werkstoff sein und in den Zylinderkopf eingeschraubt werden. Die Einspritzdüse mit vier Löcher, mit etwas nach hinten ge­ richteten Strahl müßte in der Mitte des Brennraums und auch die Glühkerze eingebaut werden, um die Gasgeschwindigkeit nicht zubehindern.Clean exhaust gases than in the previous engines due to higher turbulence and temperature, lighter pistons, smooth engine running, higher temperatures in the passenger compartment, longer engine life, less stress on the engine oil (temperature), longer oil change times, higher compression, higher efficiency, etc. The combustion chamber ( 1 ) should, as with the swirl chamber engine, be made of a special material and screwed into the cylinder head. The injector with four holes, with the jet directed somewhat backwards, would have to be installed in the middle of the combustion chamber and the glow plug, so as not to obstruct the gas velocity.

Wahrscheinlich könnte man auf sehr hohe Einspritzdrücke verzich­ ten.You could probably do without very high injection pressures ten.

Die Drallkanäle und der Brennraum könnten an einem durchsichtigen Motor (Kolben und Zylinderkopf) mit von oben angebauter Kamera optimiert (Reynoldschezahl) werden (ohne Verbrennung).The swirl channels and the combustion chamber could be transparent on one Engine (piston and cylinder head) with camera attached from above are optimized (Reynoldsche number) (without combustion).

Die Gasgeschwindigkeit im Brennraum wie in der Zeichnung dar­ gestellt beträgt (VW Golf SDI)
bei 1000 U/min etwa 7 m/s
bei 4200 U/min etwa 53 m/s.The gas velocity in the combustion chamber as shown in the drawing is (VW Golf SDI)
at 1000 rpm about 7 m / s
at 4200 rpm about 53 m / s.

Die Gasgeschwindigkeit im Brennraum ist bedeutend größer als durch den Drall vom Ansaugkanal bei den bisherigen Motoren. Die Gasgeschwindigkeit vom Ansaugkanal kann man in die Drall­ kanäle integrieren (addieren).The gas velocity in the combustion chamber is significantly higher than due to the swirl of the intake duct in previous engines. The gas velocity from the intake duct can be twisted integrate (add) channels.

Die Ansaugdrallkanäle müßten bei den bisherigen Motoren etwas entschärft werden, um eine bessere Zylinderfüllung zu erreichen. Dieses würde sich am besten an den Saugdieselmotoren bemerkbar machen (SDI).The intake swirl ducts would have to be something with the previous engines be defused to achieve a better cylinder filling. This would be best noticeable in the naturally aspirated diesel engines make (SDI).

Die Richtigkeit meiner Theorie könnte man schnell und ohne großen Aufwand am VW Golf SDI-Motor testen.The correctness of my theory could be quickly and without test great effort on the VW Golf SDI engine.

Drallkanal (4), etwa 5 mm von außen beginnend, von 0 bis 3,5 mm tief, 4 mm Durchmesser, tangentialeintretent in den Mündungsbrenn­ raum, ohne die Glätte des Brennhalses zu verletzen.Swirl channel ( 4 ), starting about 5 mm from the outside, from 0 to 3.5 mm deep, 4 mm in diameter, tangentially entering the muzzle combustion chamber without damaging the smoothness of the neck.

BezeichnungenDesignations

11

Brennraum
Combustion chamber

22nd

Brennraumhals
Combustion chamber neck

33rd

Brennraummündung
Combustion chamber mouth

44th

Drallkanal
Swirl channel

55

Ventil
Valve

66

Kolben- oder Zylinderrand
Piston or cylinder edge

77

Ansaugdrallströmung
Intake swirl flow

Claims (4)

1. Für Drallkanäle (4) verschiedener Querschnittsform, Richtung, Anzahl (größer 1) beginnend vom Zylinderrand (6) zum Brennraum (1), mit tangentialen Eintritt in die Brennraummündung (3), im Kolben und Zylinderkopf, für Verbrennungsmotore.1. For swirl channels ( 4 ) of different cross-sectional shape, direction, number (greater than 1) starting from the cylinder edge ( 6 ) to the combustion chamber ( 1 ), with tangential entry into the combustion chamber mouth ( 3 ), in the piston and cylinder head, for internal combustion engines. 2. Die Drallkanäle (4) beginnen etwa vom Kolben- oder Zylinder­ rand, kreisförmig, mit steigendem Querschnitt, unterschiedlicher Querschnittsform (Nut ∪, Nocken ∩, winkelig ) und unterschiedlicher Anzahl und treten tangential in die Brennraummündung (3) ein.2. The swirl channels ( 4 ) start approximately from the piston or cylinder edge, circular, with increasing cross-section, different cross-sectional shape (groove ∪, cam ∩, angular) and different numbers and enter tangentially into the combustion chamber mouth ( 3 ). 3. Der Eintritt des Drallkanals (4) erfolgt so, daß der Brennraumhals (2) glatt bleibt, um die ausströmenden Verbennungsgase nicht behindert. Der Brennraumhals ist etwas konisch, entsprechend der Lavaldüse.3. The swirl channel ( 4 ) enters in such a way that the combustion chamber neck ( 2 ) remains smooth so as not to impede the outflowing combustion gases. The combustion chamber neck is somewhat conical, corresponding to the Laval nozzle. 4. Der Anspruch gilt für Dieselmotore und Benzinmagermotore.4. The claim applies to diesel engines and petrol-lean engines.
DE19957461A 1999-11-29 1999-11-29 Swirl channels for combustion chambers in IC engines extend from cylinder edge to combustion chamber with tangential entry into combustion chamber aperture Ceased DE19957461A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19957461A DE19957461A1 (en) 1999-11-29 1999-11-29 Swirl channels for combustion chambers in IC engines extend from cylinder edge to combustion chamber with tangential entry into combustion chamber aperture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19957461A DE19957461A1 (en) 1999-11-29 1999-11-29 Swirl channels for combustion chambers in IC engines extend from cylinder edge to combustion chamber with tangential entry into combustion chamber aperture

Publications (1)

Publication Number Publication Date
DE19957461A1 true DE19957461A1 (en) 2001-06-07

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ID=7930765

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DE19957461A Ceased DE19957461A1 (en) 1999-11-29 1999-11-29 Swirl channels for combustion chambers in IC engines extend from cylinder edge to combustion chamber with tangential entry into combustion chamber aperture

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2834003A1 (en) * 2001-12-21 2003-06-27 Renault Multi-cylinder i.c. engine with direct fuel injection has each piston made with face cavity shaped to produce spiral motion in fuel/air mixture
FR2885391A1 (en) * 2005-05-09 2006-11-10 Renault Sas Diesel direct injection internal combustion engine for motor vehicle, has cylindrical head provided with housing in its upper surface with respect to piston, and groove and boss regulated according to desired swirl effect of intake gas load
CN104727925A (en) * 2015-01-16 2015-06-24 华北水利水电大学 Side wall circulation combustion chamber for diesel engine
US10415456B2 (en) * 2014-04-29 2019-09-17 Volvo Truck Corporation Combustion chamber for an internal combustion engine and an internal combustion engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2834003A1 (en) * 2001-12-21 2003-06-27 Renault Multi-cylinder i.c. engine with direct fuel injection has each piston made with face cavity shaped to produce spiral motion in fuel/air mixture
FR2885391A1 (en) * 2005-05-09 2006-11-10 Renault Sas Diesel direct injection internal combustion engine for motor vehicle, has cylindrical head provided with housing in its upper surface with respect to piston, and groove and boss regulated according to desired swirl effect of intake gas load
US10415456B2 (en) * 2014-04-29 2019-09-17 Volvo Truck Corporation Combustion chamber for an internal combustion engine and an internal combustion engine
CN104727925A (en) * 2015-01-16 2015-06-24 华北水利水电大学 Side wall circulation combustion chamber for diesel engine

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8131 Rejection