EP0922841A2 - Zweitakt-Verbrennungsmotor mit Auslass-Schiebersteuerung durch den Kolben - Google Patents
Zweitakt-Verbrennungsmotor mit Auslass-Schiebersteuerung durch den Kolben Download PDFInfo
- Publication number
- EP0922841A2 EP0922841A2 EP98122482A EP98122482A EP0922841A2 EP 0922841 A2 EP0922841 A2 EP 0922841A2 EP 98122482 A EP98122482 A EP 98122482A EP 98122482 A EP98122482 A EP 98122482A EP 0922841 A2 EP0922841 A2 EP 0922841A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- slide valve
- piston
- outlet
- internal combustion
- combustion engine
- 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.)
- Withdrawn
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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
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
-
- 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
Definitions
- the invention relates to a piston internal combustion engine, in particular a two-stroke engine with regulated outlet of the burned exhaust gases through a piston-controlled slide in the cylinder wall at the exhaust slot.
- the piston fulfills the during the upward movement Function of a charge pump when sucking in the air-fuel mixture first into the The crankcase and at the same time the air-fuel mixture in the combustion chamber condensed. After the ignition has taken place, the piston has the downward movement Function of power transmission from the explosion of the air-fuel mixture to the Crankshaft using the connecting rod.
- the slots are free, both for the outlet and for the inlet. The problem with today's two-stroke engines is that at low revs the outlet slot opens relatively slowly, which leaves a lot of time to flow out Exhaust gases.
- the object of the invention is a piston internal combustion engine with a regulated outlet to find which does not have the disadvantages mentioned.
- the task will be like follows solved: The outlet slot is closed before the piston starts moving upwards starts to prevent fresh air directly from the inlet slot to the outlet slot leaves.
- This device reduces gasoline consumption.
- the invention is intended to nevertheless benefit from the advantages of the known two-stroke engines has: Simple construction, low weight, few moving parts, therefore small Friction losses, compact dimensions and less expensive production.
- the two-stroke engine (in Fig. 1) consists of a crankcase, a cylinder and a Piston (1).
- the piston (1) is connected to the pin via a connecting rod with the crankshaft connected.
- Two notches (8) are arranged along the piston (1) and serve these as guidance and control of the slide valve (6).
- In the cylinder wall (3) of the engine there is an outlet slot (4) on the exhaust duct. Between the outlet slot (4) and the exhaust duct is a closing device, slide valve (6).
- the slide valve (6) has a continuous opening (5) in which same dimensions as the outlet slot (4).
- At the bottom of the vertical Slider valves (6) are horizontal extensions designed as drivers (7).
- the Carriers (7) slide, both in the cylinder wall (3) and in the notches (8) the piston (1).
- the piston (1) controls the slide valve (6) close to the top and bottom dead center. In between, the slide valve (6) remains in its through the piston (1) predefined location.
- the two-stroke engine shown works as follows:
- the piston controls the gas exchange in this engine in two ways.
- the simpler explanation we write of the piston upper part for the known opening and closing of the in and Outlet slots, with the piston near the bottom dead center, the inlet and outlet slots opens and closes again during the subsequent upward movement.
- At the arrangement according to the invention serves the lower piston part to control the slide valve, by moving the piston to the slide valve at the top and bottom dead center moves, with most of the movement of the piston the slide valve remains in Resting position.
- the inlet and outlet slots are closed by the upper piston part. But the slide valve is open. At this time, the opening of the plate valve corresponds in size to the diameter of the outlet slot.
- the piston upper part first opens the outlet slot during the downward movement. The burned gases can escape through the exhaust duct. At this point, both the outlet slot and the slide valve are open. Due to the continued downward movement, the lower piston part closes the slide valve and the upper piston part opens the inlet slot. At the bottom dead center, the inlet slot is fully open and the outlet slot is closed.
- the cylinder can now fill with a fresh air / fuel mixture. The air-fuel mixture is compressed by the upward movement of the piston. Shortly at the top dead center, the lower part of the piston opens the slide valve and the ignition takes place, again causing the piston to move downwards.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
Description
- Fig. 1
- Schnitt durch den Zylinder einer erfindungsgemässen Zweitakt-Motors
- Fig. 2
- Schnitt nach Linie B - B
- Fig. 3
- Kolbenansicht mit der Einkerbungen, der Führungsnut
- Fig. 4
- Detailansicht des Schieber-Ventils
- Fig. 5
- Querschnitt des Kolbens und Schieber-Ventils
Beim unteren Todpunkt ist der Einlass-Schlitz voll geöffnet und der Auslass-Schlitz ist geschlossen. Nun kann sich der Zylinder mit frischen Luft-Kraftstoff-Gemisch füllen. Durch die Aufwärtsbewegung des Kolbens verdichtet sich das Luft-Kraftstoff-Gemisch. Kurz beim oberen Todpunkt öffnet der Kolbenunterteil das Schieber-Ventil und die Zündung erfolgt, wobei wieder die Abwärtsbewegung des Kolbens erfolgt.
Claims (8)
- Zweitakt-Verbrennungsmotor mit wenigstens einem Kolben und wenigstens einem Arbeitszylinder mit einem Gaswechsel durch eine Schlitzanordnung mit mindestens einem Auslass- und mindestens einem Einlass-Schlitz, wobei beim Auslass-Schlitz in der Zylinderwand eine zusätzliches Schieber-Ventil angeordnet ist, dadurch gekennzeichnet, dass der Kolben das Schieber-Ventil im Auslasbereich schliesst, vor dem endgültigen Verschluss des Einlass-Schlitzes.
- Zweitakt-Verbrennungsmotor nach Patentanspruch dadurch gekennzeichnet, dass der Kolben (1) mit Schieber-Ventil (6) nicht fest verbunden ist, sondern frei gleiten kann.
- Zweitakt-Verbrennungsmotor nach Patentanspruch dadurch gekennzeichnet, dass des Schieber-Ventil (6) wenigstens eine Öffnung (5) aufweist, die mindestens dem Querschnitt des Auslass-Schlitzes (4) entspricht.
- Zweitakt-Verbrennungsmotor nach Patentanspruch dadurch gekennzeichnet, dass der Einlass-Schlitz (2) nicht höher als der Auslass-Schlitz (4) angeordnet ist (von der Kurbelwelle aus gesehen).
- Zweitakt-Verbrennungsmotor nach Patentanspruch dadurch gekennzeichnet, dass der Kolben (1) mindestens eine Führungsnut (8) aufweist, in der das Schieber-Ventil (6) gleiten kann.
- Zweitakt-Verbrennungsmotor nach Patentanspruch dadurch gekennzeichnet, dass der Kolben (1) kurz vor dem unteren Todpunkt das Schieber-Ventil (6) im Auslass zu schliessen berginnt.
- Zweitakt-Verbrennungsmotor nach Patentanspruch dadurch gekennzeichnet, dass der Kolben (1) kurz vor dem oberen Todpunkt das Schieber-Ventil (6) im Auslass öffnet.
- Abhängiger Patentanspruch
Zweitakt-Verbrennungsmotor nach Unteranspruch 7 dadurch gekennzeichnet, dass auch eine elastische Vorrichtung (Feder) das Schieber-Ventil (6) im Auslass öffnen kann.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH286497 | 1997-12-12 | ||
CH286497 | 1997-12-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0922841A2 true EP0922841A2 (de) | 1999-06-16 |
EP0922841A3 EP0922841A3 (de) | 2000-02-16 |
Family
ID=4243311
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98122482A Withdrawn EP0922841A3 (de) | 1997-12-12 | 1998-11-27 | Zweitakt-Verbrennungsmotor mit Auslass-Schiebersteuerung durch den Kolben |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0922841A3 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100361000C (zh) * | 2005-02-24 | 2008-01-09 | 友达光电股份有限公司 | 液晶面板与其制造方法 |
ITCZ20100008A1 (it) * | 2010-07-05 | 2012-01-06 | Domenico Pettinato | Gruppo termico di motore a due tempi di 125 centimetri cubici con valvola a ghigliottina sulla luce di scarico |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB213398A (en) * | 1923-02-27 | 1924-04-03 | Fernand Laguesse | Improvements in two-stroke internal combustion engines |
US3733837A (en) * | 1970-11-18 | 1973-05-22 | British Oxygen Co Ltd | Thermodynamic reciprocating machine |
GB2145467A (en) * | 1983-08-02 | 1985-03-27 | Alexander Macfadzean | Two-stroke I.C. engine exhaust ports |
-
1998
- 1998-11-27 EP EP98122482A patent/EP0922841A3/de not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB213398A (en) * | 1923-02-27 | 1924-04-03 | Fernand Laguesse | Improvements in two-stroke internal combustion engines |
US3733837A (en) * | 1970-11-18 | 1973-05-22 | British Oxygen Co Ltd | Thermodynamic reciprocating machine |
GB2145467A (en) * | 1983-08-02 | 1985-03-27 | Alexander Macfadzean | Two-stroke I.C. engine exhaust ports |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100361000C (zh) * | 2005-02-24 | 2008-01-09 | 友达光电股份有限公司 | 液晶面板与其制造方法 |
ITCZ20100008A1 (it) * | 2010-07-05 | 2012-01-06 | Domenico Pettinato | Gruppo termico di motore a due tempi di 125 centimetri cubici con valvola a ghigliottina sulla luce di scarico |
Also Published As
Publication number | Publication date |
---|---|
EP0922841A3 (de) | 2000-02-16 |
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