DE511345C - Pre-chamber diesel engine with airless fuel injection - Google Patents

Pre-chamber diesel engine with airless fuel injection

Info

Publication number
DE511345C
DE511345C DEM99254D DEM0099254D DE511345C DE 511345 C DE511345 C DE 511345C DE M99254 D DEM99254 D DE M99254D DE M0099254 D DEM0099254 D DE M0099254D DE 511345 C DE511345 C DE 511345C
Authority
DE
Germany
Prior art keywords
fuel injection
diesel engine
cylinder
chamber
chamber diesel
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.)
Expired
Application number
DEM99254D
Other languages
German (de)
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.)
Rolls Royce Solutions GmbH
Original Assignee
Maybach Motorenbau GmbH
Publication date
Priority to DEM99254D priority Critical patent/DE511345C/en
Application granted granted Critical
Publication of DE511345C publication Critical patent/DE511345C/en
Expired 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
    • F02B19/00—Engines characterised by precombustion chambers
    • F02B19/02—Engines characterised by precombustion chambers the chamber being periodically isolated from its cylinder
    • F02B19/04—Engines characterised by precombustion chambers the chamber being periodically isolated from its cylinder the isolation being effected by a protuberance on piston or cylinder head
    • 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
    • F02B19/00—Engines characterised by precombustion chambers
    • F02B19/14—Engines characterised by precombustion chambers with compression ignition
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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)

Description

Vorkammerdieselmotor mit luftloser Brennstoffeinspritzung Die Erfindung bezieht sich auf Vorkammerdieselmotoren mit luftloser Brennstoffeinspritzung (insbesondere für Kraftfahrzeuge), und zwar auf solche, bei denen die Vorkammer seitlich am Zylinder angebracht ist und die Mündung des überströmkanals zwischen dem Zylinder und der Vorkammer vom Kolben teilweise oder ganz überschliffen wird. Dieses Überschleifen hat den Vorteil, daß sich die Mündung gegen Ende des Kolbenhubes von selbst verengt, so daß trotz abnehmender Kolbengeschwindigkeit immer noch eine verhältnismäßig große Luftgeschwindigkeit an der Mündung herrscht, die in der Vorkammer eine lebhafte Wirbelung verursacht.Pre-chamber diesel engine with airless fuel injection The invention refers to pre-chamber diesel engines with airless fuel injection (in particular for motor vehicles), namely those in which the prechamber is on the side of the cylinder is attached and the mouth of the overflow channel between the cylinder and the Pre-chamber is partially or completely ground by the piston. This blending has the advantage that the mouth narrows by itself towards the end of the piston stroke, so that despite the decreasing piston speed, there is still a relatively large one Air speed prevails at the mouth, which in the antechamber is brisk Causing vortex.

Nach der vorliegenden Erfindung soll diese Wirkung noch dadurch erhöht werden, daß für das Profil des Überströmkanals an seiner Mündung in den Zylinder eine sich nach oben verjüngende Form gewählt ist. Dadurch wird die Austrittsöffnung der Luft aus dem oberen Teil des Zylinders nicht nur entsprechend dem Kolbenweg verengt, sondern auch noch dieser erfindungsgemäßen Verjüngung entsprechend. Es findet also sowohl eine Verengung in der vertikalen Richtung als auch eine solche in der horizontalen Richtung statt, so daß gewissermaßen eine sich dauernd verengende Düsenöffnung für den Luftdurchtritt geschaffen ist. Dies hat den Vorteil, daß eine noch stärkere Durchwirbelung der Luft stattfindet, als dies nach den bisherigen Konstruktionen der Fall war, so daß eine noch innigere Mischung zwischen Luft und Brennstoff in der Vorkammer vor sich geht.According to the present invention, this effect is intended to be increased still further be that for the profile of the transfer duct at its mouth in the cylinder an upwardly tapering shape is selected. This opens the exit opening the air from the upper part of the cylinder not only according to the piston travel narrowed, but also according to this tapering according to the invention. It thus finds both a narrowing in the vertical direction and one in the horizontal direction, so that to a certain extent a continuously narrowing Nozzle opening is created for the passage of air. This has the advantage that a even stronger turbulence of the air takes place than this after the previous one Constructions was the case, so that an even more intimate mixture between air and Fuel is going on in the antechamber.

In der Zeichnung ist ein Ausführungsbeispiel dargestellt.An exemplary embodiment is shown in the drawing.

Abb. i ist ein Schnitt durch die seitlich am Zylinder angebrachte Vorkammer.Fig. I is a section through the one attached to the side of the cylinder Antechamber.

Die Zylinderwandung ist mit a bezeichnet. b ist die Vorkammer, und c ist der überströmkanal. In der Kammer sind in dem vorliegenden Beispiel je ein Einlaß- und ein Auslaßventil angeordnet. Die Brennstoffeinspritzung erfolgt durch die Düse d.The cylinder wall is denoted by a. b is the antechamber, and c is the overflow channel. In the present example there is one in the chamber Inlet and an outlet valve arranged. The fuel injection is carried out by the nozzle d.

Abb. 2 ist eine Teilansicht aus dem Zylinderinnern auf die Mündung des überströmkanals, entsprechend der Pfeilrichtung in Abb. i. Aus ihr ist ersichtlich, wie die Form des Überströmkanals c sich erfindungsgemäß nach dem Zylinderdeckel zu verjüngt.Fig. 2 is a partial view of the muzzle from the inside of the cylinder of the overflow channel, according to the direction of the arrow in Fig. i. It can be seen from her how the shape of the overflow channel c according to the invention after the cylinder cover too rejuvenated.

Claims (1)

PATENTANSPRUCH: Vorkammerdieselmotor mit luftloser Brennstoffeinspritzung, insbesondere für Kraftfahrzeuge, mit einer seitlich am Zylinder angebrachten Vorkammer und einem Überströmkanal zwischen Zylinder ünd Vorkammer, dessen Mündung vom Kolben überschliffen wird, dadurch gekennzeichnet, daß das Profil des überströmkanals (c) eine sich nach dem Zylinderdeckel zu verjüngende Form hat. PATENT CLAIM: Pre-chamber diesel engine with airless fuel injection, especially for motor vehicles, with a pre-chamber attached to the side of the cylinder and an overflow duct between the cylinder and the pre-chamber, the mouth of which is ground by the piston, characterized in that the profile of the overflow duct (c) is towards the cylinder cover has a tapering shape.
DEM99254D Pre-chamber diesel engine with airless fuel injection Expired DE511345C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM99254D DE511345C (en) Pre-chamber diesel engine with airless fuel injection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM99254D DE511345C (en) Pre-chamber diesel engine with airless fuel injection

Publications (1)

Publication Number Publication Date
DE511345C true DE511345C (en) 1930-10-29

Family

ID=7324015

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM99254D Expired DE511345C (en) Pre-chamber diesel engine with airless fuel injection

Country Status (1)

Country Link
DE (1) DE511345C (en)

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