DE3106033A1 - Engine with variable combustion-space volume - Google Patents

Engine with variable combustion-space volume

Info

Publication number
DE3106033A1
DE3106033A1 DE19813106033 DE3106033A DE3106033A1 DE 3106033 A1 DE3106033 A1 DE 3106033A1 DE 19813106033 DE19813106033 DE 19813106033 DE 3106033 A DE3106033 A DE 3106033A DE 3106033 A1 DE3106033 A1 DE 3106033A1
Authority
DE
Germany
Prior art keywords
piston
load range
combustion
cylinder
space volume
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
DE19813106033
Other languages
German (de)
Inventor
Ulrich 2000 Norderstedt Becker
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 DE19813106033 priority Critical patent/DE3106033A1/en
Priority to DE19813130767 priority patent/DE3130767A1/en
Publication of DE3106033A1 publication Critical patent/DE3106033A1/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
    • F02B75/00—Other engines
    • F02B75/04—Engines with variable distances between pistons at top dead-centre positions and cylinder heads
    • F02B75/041—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of cylinder or cylinderhead positioning
    • F02B75/042—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of cylinder or cylinderhead positioning the cylinderhead comprising a counter-piston
    • 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
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into 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
    • 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

Abstract

Prior art: in present day engines the size of the combustion-space volume is rigidly fixed. At the same time in the partial load range an additional thermally caused power reduction must be taken into account. At full load increased wear can occur due to "pinking". Solution: reduce the combustion-space volume and install a second piston as follows: 1.0) Extend the cylinder upwards (omit cylinder head) and introduce a movable second piston from above. Valves, spark plugs and injection nozzles are accommodated in the cylinder wall. 2.0) The second piston is movably fitted into the conventional cylinder head. Operating principle: 1.1-2.1) The second piston is adjusted by spring force to the highest compression pressure or combustion pressure, which are independent of the load range. 1.2-2.2) The second piston is adjusted by eccentric or hydraulic pressure to the highest non-load-dependent compression pressure. Achievable advantages: due to the high compression pressure in the partial load range, improved thermal efficiency and reduced pollutant emissions. Overload protection in the full load range due to receding position of the second piston, even in the case of low knock rating of the fuel. O

Description

Beschreibungdescription

Titel: Motor mit variablem Verdichtungsraum Anwendungs- Die Erfindung betrifft 2 und 4 Takt-@ebiet: motoren für Vergaserkraftstoff, Diesel und Gas.Title: Variable Compression Engine Application- The Invention applies to 2 and 4 stroke @ e-areas: engines for carburetor fuel, diesel and gas.

Zweck: Bei derartigen Motoren soll der Verdichtungsraum variabel gestaltet werden, um den Verbrennungsdruck zu stabilisieren, die Zylinderbelüftung zu verbessern und den Verdichtungsdruck im Teillastbereich zu erhöhen.Purpose: In such engines, the compression chamber should be designed to be variable to stabilize the combustion pressure, improve cylinder ventilation and to increase the compression pressure in the partial load range.

stand der Bei den heutigen Motoren ist der Ver-Technik: dichtungsraum starr in seiner Größe festgelegt. Um den Verbrennungsdruck im Vollastbereich zu begrenzen, werden der Zündzeitpunkt verstellt, der Kraftstoff indirekt eingespritzt und der Verdichtungsraum möglichst kugelförmig gestaltet.In today's engines is the Ver-Technik: sealing chamber rigidly set in size. To increase the combustion pressure in the full load range limit, the ignition point is adjusted, the fuel is injected indirectly and the compression space is designed as spherical as possible.

Kritik des Dabei rnu; -:tn Leissungsverlust im Standes der Vollastbereich und eine unvollkom-Technik: mene Verbrennung im Teillastbereich inkaufgenommen werden. Unter extremen Belastungen und bei schwankender Kraftstoffqualität kann es zu hohem Verschleiß durch "Klingeln" bzw.Criticism of this rnu; -: tn power loss in the state of the full load range and an imperfect technique: where combustion in the partial load range has to be accepted. Under extreme loads and with fluctuating fuel quality, it can become too high Wear from "ringing" or

"Klopfen" des Motors kommen. "Knocking" of the engine come.

Aufgabe: Der Erfindung liegt die Aufgabe zugrunde den Verdichtungsraum in seiner Größe variabel zu gestalten.Task: The invention is based on the task of the compression space to make it variable in size.

Lösung: Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß l.C der Zylinder nach oben verlängert wird und statt des Zylinderkopfes ein Zweitkolben von oben in den Zylinder beweglich eingeschoben wird.Solution: This object is achieved according to the invention in that I.C the cylinder is extended upwards and a second piston instead of the cylinder head is inserted movably into the cylinder from above.

2.0 der Zweitkolben beweglich im verbleibenden Zylinderkopf geführt wird (Zylinder wird nicht verlsngert) 3.0 die Ventile, Zündkerzen und Einspritzdüsen bei Ausführung 1.0 seitlich im dinkel von ca. 90 Grad zum Zylinder in der Zylinderwand angebracht werden, und bei Ausführung 2.0 im Zylinderkopf verbleiben, jedoch ebenfalls zur weite geneigt. 2.0 the second piston movably guided in the remaining cylinder head (cylinder is not lengthened) 3.0 the valves, spark plugs and injectors with version 1.0 laterally at an angle of approx. 90 degrees to the cylinder in the cylinder wall attached, and remain in the cylinder head with version 2.0, but also inclined to the far.

Dadurch kann der Zweitkolben ausreichend groß gestaltet werden. As a result, the second piston can be made sufficiently large.

Der Kolben ist gegenüber den Ventilen seitlich ausgespart. Die Kolbenringe sind nach unten versetzt. The piston is recessed on the side opposite the valves. The piston rings are offset downwards.

arbeitsweise des Zweitkolbens (gilt je für Ausführung a.w und 2.0) 0.1 Der Zweitkolben wird durch Federkraft gegen einen Anschlag in Richtung Kolben gedrückt und dabei gleichzeitig auf den kleinsten Verdichtungsraum eingestellt. mode of operation of the second piston (applies to versions a.w and 2.0) 0.1 The second piston is pushed against a stop in the direction of the piston by spring force pressed and at the same time adjusted to the smallest compression space.

0.2 Der Zweitkolben wird durch E:çzenterbewegung auf den jeweils erforderlicnen Verdichtungsraum eingestellt. 0.2 The second piston is moved by E: centering on the respective required compression space set.

Erzielbare Bei Ausführung 0.1 in Verbindung 1.0-3.0: Vorteile: Abbau der Verbrennungsdruckspitze durch Zurückweichen des Zweitkolbens und anschließendem Federweg zurück in die Ausgangsposition und dadurch Erhöhung des Drehmoments an der Kurbelwelle.Achievable with version 0.1 in connection with 1.0-3.0: Advantages: Reduction the combustion pressure peak by retreating the second piston and then Spring travel back to the starting position and thereby increasing the torque the crankshaft.

Durch Verkleinerung des Verdichtungsraumes höhere Verdichtung im Teillastbereich, bessere Zylinderbelüftung und dadurch bessere Verbrennung. By reducing the compression area, higher compression in the Partial load range, better cylinder ventilation and therefore better combustion.

Bei Ausführunb, 0.2 in Verbindung 1.0-3.0: Die instellung der Verdichtungsraumgröße durch Exzenterwirkung auf den Zweitkolben führt zu einer gleichmäßigen Verdichtung und Verbrennung. For version 0.2 in connection with 1.0-3.0: The setting of the compression area size the eccentric effect on the second piston results in even compression and combustion.

Claims (1)

Patentansprüche: Oberbegriff: Motor mit variablem Verdichtungsraum für 2 und 4 Taktmotoren durch beweglichen Zweitkolben im Verdichtungsraum.Claims: Generic term: engine with variable compression chamber for 2 and 4 stroke engines through movable second piston in the compression chamber. Kennzeichnende Dadurch gekennzeichnet, daß Teile: 7.0 der Zweitkolben sich statt eines Zylinderkopfes im verlangerten Zylinder befindet, 2.-0 der Zweitkolben sich im Zylinderkopf befindet, 3.0 die Ventile, Zündkerzen und Einspritzdüsen seitlich in der Zylinderwand angeordnet sind, 0.1 der Zweitkolben durch Federkraft reguliert wird, 0.2 der Zweitkolben durch Exzenter reguliert wird.Characteristic characterized in that parts: 7.0 the second piston is located in the extended cylinder instead of a cylinder head, 2.-0 the second piston is in the cylinder head, 3.0 the valves, spark plugs and injectors on the side are arranged in the cylinder wall, 0.1 the second piston is regulated by spring force 0.2 the second piston is regulated by an eccentric.
DE19813106033 1981-02-19 1981-02-19 Engine with variable combustion-space volume Ceased DE3106033A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19813106033 DE3106033A1 (en) 1981-02-19 1981-02-19 Engine with variable combustion-space volume
DE19813130767 DE3130767A1 (en) 1981-02-19 1981-08-04 Two-stroke internal combustion engine with variable compression space and variable displacement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813106033 DE3106033A1 (en) 1981-02-19 1981-02-19 Engine with variable combustion-space volume

Publications (1)

Publication Number Publication Date
DE3106033A1 true DE3106033A1 (en) 1982-09-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19813106033 Ceased DE3106033A1 (en) 1981-02-19 1981-02-19 Engine with variable combustion-space volume

Country Status (1)

Country Link
DE (1) DE3106033A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19845965A1 (en) * 1998-10-06 2000-04-13 Audi Ag Determining the compression ratio of an internal combustion engine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR639333A (en) * 1926-11-12 1928-06-19 Method and device for keeping the specific fuel consumption constant in combustion engines and for increasing the power of combustion engines
US2388452A (en) * 1944-08-31 1945-11-06 Robert A Weatherup Gasoline engine
US2408448A (en) * 1944-04-08 1946-10-01 Allen M Rossman Two-cycle engine
US2500409A (en) * 1945-06-14 1950-03-14 Hawkins Grover Means for maintaining constant compression in cylinders of internalcombustion engines
DE1252965B (en) * 1965-08-30 1967-10-26 Orange Einspritzgeraete K G L Direct current two-stroke internal combustion engine with an auxiliary piston to change the compression ratio
DE2025923A1 (en) * 1970-05-27 1971-12-02 Paulat, Erwin, 6728 Germersheim Internal combustion piston engine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR639333A (en) * 1926-11-12 1928-06-19 Method and device for keeping the specific fuel consumption constant in combustion engines and for increasing the power of combustion engines
US2408448A (en) * 1944-04-08 1946-10-01 Allen M Rossman Two-cycle engine
US2388452A (en) * 1944-08-31 1945-11-06 Robert A Weatherup Gasoline engine
US2500409A (en) * 1945-06-14 1950-03-14 Hawkins Grover Means for maintaining constant compression in cylinders of internalcombustion engines
DE1252965B (en) * 1965-08-30 1967-10-26 Orange Einspritzgeraete K G L Direct current two-stroke internal combustion engine with an auxiliary piston to change the compression ratio
DE2025923A1 (en) * 1970-05-27 1971-12-02 Paulat, Erwin, 6728 Germersheim Internal combustion piston engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19845965A1 (en) * 1998-10-06 2000-04-13 Audi Ag Determining the compression ratio of an internal combustion engine
DE19845965B4 (en) * 1998-10-06 2009-07-09 Audi Ag Method for determining the actual value of the compression ratio in an internal combustion engine

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