DE1929803A1 - Two-stroke internal combustion engine - Google Patents

Two-stroke internal combustion engine

Info

Publication number
DE1929803A1
DE1929803A1 DE19691929803 DE1929803A DE1929803A1 DE 1929803 A1 DE1929803 A1 DE 1929803A1 DE 19691929803 DE19691929803 DE 19691929803 DE 1929803 A DE1929803 A DE 1929803A DE 1929803 A1 DE1929803 A1 DE 1929803A1
Authority
DE
Germany
Prior art keywords
internal combustion
combustion engine
stroke internal
cylinder
stroke
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.)
Pending
Application number
DE19691929803
Other languages
German (de)
Inventor
Wolf Dipl-Ing Karl
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 DE19691929803 priority Critical patent/DE1929803A1/en
Publication of DE1929803A1 publication Critical patent/DE1929803A1/en
Pending 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
    • F02B23/0678—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
    • F02B23/069—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 characterised by its eccentricity from the cylinder 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
    • F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
    • 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
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
    • 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
    • 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
    • F02B23/0636—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 the combustion space having a substantially flat and horizontal bottom
    • 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
    • F02B2700/00—Measures relating to the combustion process without indication of the kind of fuel or with more than one fuel
    • F02B2700/03—Two stroke engines
    • F02B2700/037—Scavenging or charging channels or openings
    • 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)
  • Supercharger (AREA)

Description

Z w e i t a k t - Verbrennungsmotor Die Erfindung bezieht sich auf das Gleichdruckverfahren mit Brennstoffeinspritzung und trifft im besonderen den Viertakt-und Vierzylinder - Reihenmotor. Die Erfindung hat zum Zweck: Eine Verminderung der giftigen Bestandteile in den Abgasen, eine Steigerung der spezifischen Leistung und ein gleichmässigeres Drehmoment des Motors. Second act - Internal combustion engine The invention relates to the constant pressure method with fuel injection and hits in particular the Four-stroke and four-cylinder in-line engines. The invention has for its purpose: A reduction the toxic components in the exhaust gases, an increase in the specific performance and a more even torque of the motor.

Die Verminderung der giftigen Abgase wird ermöglicht durch eine vollständige Aus spülung des Zylinderraumes u. des Kompressionsraumes mit Frischluft und durch die Anordnung des Kompressionsraumes in gedrängter Form im Kolbenkopf.The reduction of the toxic exhaust gases is made possible by a complete Purge the cylinder chamber and the compression chamber with fresh air and through the arrangement of the compression space in a compact form in the piston head.

Die Steigerung der spezifischen Leistung wird ermöglicht,in dem für die Arbeitsleistung nur ein Weil des Hubvolumenss z.B. 60% des Kolbenhubes, entsprechend 95O Kurbeiwinkelw genützt wird und für den Auspuff, die Spülung und den Aug schub überschüssiger Frischluft das ganze Hubvolumen verfügbar ist.The increase in specific performance is made possible in the for the work performance only because of the stroke volume e.g. 60% of the piston stroke, accordingly 95O Kurbeiwinkelw is used and for the exhaust, the flushing and the eye thrust excess fresh air the entire stroke volume is available.

Ein gleichmäßigeres Drehmoment ergibt sich dadurch,dass bei einem Vierzylindermotor Je zwei Zylinder in einem Winkel von 900 zur Kurbelachse gestellt sind. Diese Merkmale der Erfindung werden erreicht,in dem der vom Kolben gesteuerte Frischlufteinlaß in dem Zylinder am Hubende des Zylinders wie bei Zweitaktmotoren fiblich erfolgt, aber der von einem Nocken gesteuerte Gasauslaß im Zylinderkopf angeordnet ist.A more uniform torque results from the fact that with a Four-cylinder engine Two cylinders each placed at an angle of 900 to the crank axis are. These features of the invention are achieved in that the piston controlled Fresh air intake in the cylinder at the end of the stroke of the cylinder as in two-stroke engines Fiblich takes place, but the gas outlet controlled by a cam in the cylinder head is arranged.

Die Spülluft soll dem Kurbelgehäuse durch ein Schleudergebläse zugeführt werden zum Ausgleich der Spülwiderstände im Motor und im Außnufftonf. The scavenging air is to be supplied to the crankcase by a centrifugal fan to compensate for the scavenging resistance in the engine and in the external noise.

je Umdrehung nur etwa 60% des Hubvolumens Atheit leisten, beträgt die Mehrleistung 20% gegenilbor einem gle;iohvolumigen Viertaktmotor.perform only about 60% of the stroke volume per revolution, the extra power is 20% compared to a four-stroke engine of the same volume.

Die Erfindung wird durch die Schema - Zeichnung erläutert.The invention is illustrated by the schematic drawing.

Figur 1 stellt einen Längsschnitt durch den Zylinder und den Kolben dar und zeigt die husspülllng der Verbrennungsgase aus dem Zylinderraum und aus dem Kompressionsraum.Figure 1 shows a longitudinal section through the cylinder and the piston and shows the cover flushing of the combustion gases from the cylinder chamber and from the compression room.

Figur 2 stellt einen Querschnitt durch den Zylinder und den Kolbenkopf dar und zeigt die gedrängte Form des Kompressionsraumes.Figure 2 shows a cross section through the cylinder and the piston head and shows the compact shape of the compression space.

Figur 3 zeigt den Kolbenweg bei 95O Kurbeiwinkel als das Ende der Expansion und den Beginn des Auspuffs, sowie bei 1250 Kurbelwinkel den Beginn der Spülung und des Ausschubes der überschüssigen Frischluft und bei 2656~Kurbelwinkel den Beginn der Kompression; außerdern ist die Form des Steuernockens für den Gasauslaß gegeben.FIG. 3 shows the piston travel at 95 ° crank angle as the end of expansion and the beginning of the exhaust, as well as at 1250 crank angle the beginning of scavenging and expulsion of the excess fresh air and at 2656 ° crank angle the beginning of compression; there is also the shape of the control cam for the gas outlet given.

Figur 4 zeigt die Abwicklung des Kurbelweges und die Steuerkurven für den Gasauslaß und den Frischlufteinlaß. In den Figuren sind die gleichen Teile mit derselben Zahl bezeichnet.Figure 4 shows the development of the crank travel and the control curves for the gas outlet and the fresh air inlet. In the figures are the same parts denoted by the same number.

Es bedeutet die Zahl 1 den Zylinder, 2 die Auslaßventile, 3 den Frischlufteinlaß, 4 den -Kolben und 5 den Kompressionsraum.The number 1 means the cylinder, 2 the exhaust valves, 3 the fresh air intake, 4 the piston and 5 the compression chamber.

In Figur 4 ist die Steuerkurve für die Auslaßventile mit 2 und die Steuerkurve für den Frischlufteinlaß mit 3 bezeichnet.In Figure 4 is the control curve for the exhaust valves with 2 and the Control curve for the fresh air inlet designated by 3.

Patent-Anspriiche Blo 3Patent claims Blo 3

Claims (4)

Patentansprüche: 1) Zweitakt - Verbrennungsmotor für Gleichdruckverfahren mit Brennstoffeinspritzung dadurch gekennzeichnet, dass der Auslaß fiir die Verbrennungsgase im Zylinderkopf und der Kompressionsraum in gedrängter Form im Kolbenkopf angeordnet ist. Claims: 1) Two-stroke internal combustion engine for constant pressure method with fuel injection characterized in that the outlet for the combustion gases in the cylinder head and the compression chamber in a compact form in the piston head is. 2) Zweitakt - Verbrennungsmotor nach Anspruch 1) dadurch gekennzeichnet, dass nur ein Teil des Hubvolumens zur Arbeitsleistung genützt wird. 2) two-stroke internal combustion engine according to claim 1), characterized in that that only part of the stroke volume is used for work. 3) Zweitakt - Verbrennungsmotor nach Anspruch 1) und 2) dadurch gekennzeichnet, dass die Frischluft dem Kurbelgehäuse durch ein Schleudergebläse zugeführt wird.3) two-stroke internal combustion engine according to claim 1) and 2) characterized in that that the fresh air is supplied to the crankcase by a centrifugal fan. 4) Zweitakt - Verbrennungsmotor nach Anspruch 1) bis 3) dadurch gekennzeichnet, daB bei einem Vierzylindermotor die halbe Zylinderreihe zur anderen Hälfte unter einem Winkel von'9O0 zur Kurbelachse gesetzt ist.4) two-stroke internal combustion engine according to claim 1) to 3), characterized in that that in a four-cylinder engine, half the cylinder bank is below the other half is set at an angle of'9O0 to the crank axis.
DE19691929803 1969-06-12 1969-06-12 Two-stroke internal combustion engine Pending DE1929803A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19691929803 DE1929803A1 (en) 1969-06-12 1969-06-12 Two-stroke internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691929803 DE1929803A1 (en) 1969-06-12 1969-06-12 Two-stroke internal combustion engine

Publications (1)

Publication Number Publication Date
DE1929803A1 true DE1929803A1 (en) 1970-12-17

Family

ID=5736770

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19691929803 Pending DE1929803A1 (en) 1969-06-12 1969-06-12 Two-stroke internal combustion engine

Country Status (1)

Country Link
DE (1) DE1929803A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2525686A1 (en) * 1982-04-23 1983-10-28 Peugeot FREE PISTON INTERNAL COMBUSTION GENERATOR

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2525686A1 (en) * 1982-04-23 1983-10-28 Peugeot FREE PISTON INTERNAL COMBUSTION GENERATOR
EP0093028A1 (en) * 1982-04-23 1983-11-02 Automobiles Peugeot Free piston internal-combustion generator

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Legal Events

Date Code Title Description
SH Request for examination between 03.10.1968 and 22.04.1971