DE489782C - - Google Patents

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Publication number
DE489782C
DE489782C DENDAT489782D DE489782DA DE489782C DE 489782 C DE489782 C DE 489782C DE NDAT489782 D DENDAT489782 D DE NDAT489782D DE 489782D A DE489782D A DE 489782DA DE 489782 C DE489782 C DE 489782C
Authority
DE
Germany
Prior art keywords
cylinder
fuel
internal combustion
combustion engine
piston
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.)
Active
Application number
DENDAT489782D
Other languages
German (de)
Publication of DE489782C publication Critical patent/DE489782C/de
Active legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B23/00Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0618Other 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
    • F02B23/063Other 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 the combustion space in the piston interacting fluid dynamically with the cylinder head, the injector body or the cylinder wall
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B23/00Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0633Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston the combustion space being almost completely enclosed in the piston, i.e. having a small inlet in comparison to its volume
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M67/00Apparatus in which fuel-injection is effected by means of high-pressure gas, the gas carrying the fuel into working cylinders of the engine, e.g. air-injection type
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2720/00Engines with liquid fuel
    • F02B2720/25Supply of fuel in the cylinder
    • F02B2720/251Fuel supply by high pressure gas
    • F02B2720/253Fuel supply by high pressure gas with high pressure air reservoir close to the point of injection; high pressure air taken from the engine cylinder
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

Description

Brennkraftmaschine mit Selbstzündung des eingespritzten Brennstoffes und mit einem Kolbenhohlraum, in dessen Öffnung gegen Hubende ein Ansatz 'am Zylinder eindringt Die Erfindung betrifft eine Brennkraft- maschine mit Selbstzündung des gegen Ende des Verdichtungshubes eingespritzten flüssigen Brennstoffs und mit einem Kolbenhohlraum, in dessen Öffnung gegen Hubende ein Ansatz am Zylinder eindringt. Bei einer bekannten Brennkraftmaschine dieser Art wird der Brennstoff unmittelbar in den Kolbenhohlraum eingespritzt, und die beim Verdichtungshub verdrängte Luft strömt über die Dauer des Brennstoffeinspritzens durch <lvn zwischen der Öffnung des Kolbenhohl- raiini,# «iicl dein ZN-liiideransatz sich bildenden eigeil I%'iiirisl>;ill liiiiiliii-cli iii deii Kolbenhohl- raum hiieiii. 1):i#, ! iriliisc@licii vnii lirc#iinstoff und Luft kann also,) clalx@i crsi iiii raum erfolgen; das ist aber füi c-iiliiltc I.c,iaiiii- und rauchfreie Verbrennung viel zu sp:i i. Gemäß der Erfindung erzielt man bessere Ergebnisse, wenn der Brennstoff in einen Mischraum eingespritzt wird, der im Zylinder- ansatz vorgesehen ist und der, .solange der Ansatz in den Kolbenhohlraum eintaucht; den Zylinderraum mit dem Kolbenhohlraum ver- bindet, so daß beim Verdichtungshub die aus dem Zylinderraum nach dem Kolbenhohlraum verdrängte Luft den Mischraum durchströmt und dabei sich mit dem eingeführten Brennstoff vermischt. Es ist zwar schon vorgeschlagen worden, il(,ii Brennstoff und die Luft vor Eintritt in den l@i)ll)rnhohlraum zusammenzuführen. Dieser \ -,i schlag bezieht sich aber nicht auf 1-Iaschinen mit.einem Ansatz am' Zylinder, und überdies ist der Vorschlag noch nicht veröffentlicht gewesen, als die vorliegende Erfindung ein- gereicht wurde, steht aber unter Patentschutz. In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes im Längsschnitt dargestellt. a ist der Zylinder der Maschine, b ist ihr Kolben, in dem der beispielsweise birnen- förmig gezeichnete Hohlraum -c untergebracht ist; je nach den Umständen kann sich aber auch eine andere Form des Kolbenhohlraumes als zweckmäßig erweisen. In die Ausmündung oder Öffnung d des Brennraums hinein ragt gegen Ende des Verdichtungshubes ein Ansatz e des Zylinderbodens. Iii dein Ansatz c sind Kanäle f, f angebracht, die (1c.11 Zylinderraum h mit dem Kolbenhohl- i,auni verbinden, sobald der Zylinderansatz c: iii die Mündung des Kolbenhohlraums eintritt. Die Kanäle sind im Innern des Ansatzes soi gestaltet, daß sie einen Mischraum bilden, wid c i 1i i ic so geführt, daß die überströmende Luft schädliche Drosselung in sie eintritt. 1)(,i- :ici# der Brennstoffdüse g heraustretende lii-i-iiiisicill- strahl kommt im Mischraum in inili~c lii-i iilii-iiiiu, mit der zum Kolbenhohlraum liiii snOmviiden Luft, wobei sich Brennstoff wid I.iil-t gilt durc-li- mischen. Beim Zusaminumritt dur I.iift finit dem Brennstoffstrahl wird clii. Ziilidiuig ein- geleitet. Die Lagu duz @liiiclslcllc Liiiii durch die, l,orm wid dic :llnili"liii@cii clur Kanäle zli d(-niselben Zweck kann auch der. Ansatz e längsverstellbar gemacht werden. Diese Verstellbarkeit kann auch dazu dienen, den Ringspalt zwischen der Mündung d des Kolbenhohlraums und dem Ansatz e nach Bedarf einzustellen. Dabei ist zu beachten, daß der Ringspalt hier nicht den Zweck hat, eine Luftwirbelung im Kolbenhohlraum zu verursachen wie bei der bekannten Ausführung. Auch die Düse kann erforderlichenfalls in ihrer Achsrichtung verschiebbar gemacht werden.Internal combustion engine with self-ignition of the injected fuel and with a piston cavity, in the opening of which a shoulder on the cylinder penetrates towards the end of the stroke The invention relates to an internal combustion auto-ignition machine towards the end liquid injected during the compression stroke Fuel and with a piston cavity, in its opening towards the end of the stroke, an approach penetrates the cylinder. In a known internal combustion engine this type of fuel is immediately in injected into the piston cavity, and the at Compression stroke displaced air flows over the duration of the fuel injection <lvn between the opening of the piston raiini, # «iicl your ZN-liiideransatz is forming Eigeil I% 'iiirisl>; ill liiiiiliii-cli iii deii piston hollow space h i ieiii. 1): i #,! iriliisc @ licii vnii lirc # iinstoff and air can therefore,) clalx @ i crsi iiii space take place; but that's füi c-iiliiltc Ic, iaiiii- and smokeless combustion way too sp: i i. According to the invention, better ones are achieved Results when the fuel is in one Mixing chamber is injected, which is in the cylinder approach is provided and the, .as long as the Approach immersed in the piston cavity; the Cylinder space with the piston cavity binds, so that during the compression stroke the cylinder space after the piston cavity displaced air flows through the mixing chamber and at the same time deal with the imported fuel mixed. It has already been suggested il (, ii fuel and the air before entering the l @ i) ll) rnhohlraum to merge. This \ -, i blow does not refer to 1-machines with an approach on the cylinder, and moreover the proposal is not yet published when the present invention was was handed, but is under patent protection. In the drawing is an exemplary embodiment of the subject matter of the invention in longitudinal section shown. a is the cylinder of the machine, b is hers Piston, in which the pear-shaped shaped cavity -c housed is; however, depending on the circumstances also another shape of the piston cavity Prove to be appropriate. In the estuary or opening d of the combustion chamber protrudes into it towards the end of the compression stroke an approach e of the cylinder base. Iii your approach c are channels f, f attached, the (1c.11 cylinder space h with the piston i, auni connect as soon as the cylinder attachment c: iii the mouth of the piston cavity enters. The channels are inside the attachment soi designed so that they form a mixing room, wid ci 1i i ic guided so that the overflowing air harmful throttling enters into them. 1) (, i-: ici # the fuel nozzle g leaking lii-i-iiiisicill- ray comes in the mixing room in inili ~ c lii-i iilii-iiiiu, with the liiii snOmviiden to the piston cavity Air, where fuel differs I.iil-t applies durc-li- Mix. When riding together through I.iift finite the fuel jet becomes clii. Ziilidiuig a directed. The Lagu duz @liiiclslcllc Liiiii by die, l, orm wid dic: llnili "liii @ cii clur channels zli d (-silene The purpose can also be. Approach e can be made longitudinally adjustable. This adjustability can also serve to adjust the annular gap between the mouth d of the piston cavity and the shoulder e as required. It should be noted that the purpose of the annular gap here is not to cause air turbulence in the piston cavity, as in the known design. If necessary, the nozzle can also be made displaceable in its axial direction.

Claims (1)

PATENTANSPRÜCHE: i. Brennkraftmaschine mit Selbstzündung des gegen Ende des Verdichtungshubes eingespritzten flüssigen Brennstoffs und mit einem Kolbenhohlraum, in dessen Öffnung gegen Hubende ein Ansatz am Zylinder eindringt, dadurch gekennzeichnet, daß der Brennstoff in einen Mischraum eingespritzt wird, der im Zylinderansatz vorgesehen ist und der, solange-der Ansatz in den Kolben-Kohlraum eintaucht, den Zvlinderraum finit dem Kolbenhohlranin. verbindet, so daß beim Verdichtungshub die. a», dem Zylinderraum nach. dem Kolbenhohlraum verdrängte Luft den Mischraum durchströmt und dabei sich mit dem eingeführten Brennstoff vermischt. z. Brennkraftmaschine nach Anspruch i, dadurch gekennzeichnet, daß der Übergang vom Mischraum zum Kolbenhohlraum als Drosselquerschnitt ausgebildet ist. 3. Brennkraftmaschine nach Anspruch a, dadurch gekennzeichnet, daß der Brennstoff in Richtung des Drosselquerschnitts eingespritzt wird. 4. Brennkraftmaschine nach Anspruch i, dadurch gekennzeichnet, daß der Abstand zwischen dem Kolbenboden und dem Zylinderdeckel nach dem Zylinderansatz hin zunimmt, um die beim Verdichtungshub gegen den Zylinderansatz hin gerichtete Luftströmung zll llntel'Ctlltz('li. 5. Brennkraftmaschine naclc Anspruch i bis 4, dadurch gel;ennzcic@h»et, daß der ZY-linderans@ctz längsvcrste11har ist. 0. lirenukraftmaschine nach Anspruch i, (ladeir(@li gekennzi@ichnci, daß die Brennstoffin cler Achsrichtung verschiebbar ist.PATENT CLAIMS: i. Internal combustion engine with compression ignition of the against The end of the compression stroke of injected liquid fuel and having a piston cavity, in the opening of which a shoulder on the cylinder penetrates towards the end of the stroke, characterized in that that the fuel is injected into a mixing space provided in the cylinder attachment and, as long as the approach is immersed in the piston-cabbage space, the cylinder space finite the piston hollow ring. connects, so that the compression stroke. a », the cylinder space after. the piston cavity displaced air flows through the mixing chamber and thereby mixed with the imported fuel. z. Internal combustion engine according to claim i, characterized in that the transition from the mixing chamber to the piston cavity as a throttle cross-section is trained. 3. Internal combustion engine according to claim a, characterized in that that the fuel is injected in the direction of the throttle cross-section. 4. Internal combustion engine according to claim i, characterized in that the distance between the piston crown and the cylinder cover after the cylinder base increases by that of the compression stroke Air flow directed towards the cylinder attachment zllntel'Ctlltz ('left 5th internal combustion engine According to claims 1 to 4, characterized in that the ZY-linderans @ ctz is longitudinally linked is. 0. lirenu engine according to claim i, (ladeir (@li gekennzi @ ichnci that the Fuel is displaceable in the axial direction.
DENDAT489782D Active DE489782C (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2674984A (en) * 1949-06-08 1954-04-13 Associated British Oil Engines Supply of fuel to internal-combustion engines
US2831468A (en) * 1954-08-04 1958-04-22 Julius E Witzky Fuel injection for internal combustion engines
DE3901183A1 (en) * 1989-01-17 1990-06-13 Daimler Benz Ag Fuel-jet divider in the combustion chamber of a self-igniting diesel internal combustion engine
FR2919028A1 (en) * 2007-07-17 2009-01-23 Peugeot Citroen Automobiles Sa High pressure/low pressure fuel injector for e.g. petrol engine in hybrid vehicle, has admission channel with end projecting in zone found on chamber when injector is placed in engine, and another end projecting in injection channel

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2674984A (en) * 1949-06-08 1954-04-13 Associated British Oil Engines Supply of fuel to internal-combustion engines
US2831468A (en) * 1954-08-04 1958-04-22 Julius E Witzky Fuel injection for internal combustion engines
DE1146697B (en) * 1954-08-04 1963-04-04 Julius E Witzky Internal combustion engine, especially with low-pressure injection
DE3901183A1 (en) * 1989-01-17 1990-06-13 Daimler Benz Ag Fuel-jet divider in the combustion chamber of a self-igniting diesel internal combustion engine
FR2919028A1 (en) * 2007-07-17 2009-01-23 Peugeot Citroen Automobiles Sa High pressure/low pressure fuel injector for e.g. petrol engine in hybrid vehicle, has admission channel with end projecting in zone found on chamber when injector is placed in engine, and another end projecting in injection channel

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