DE653125C - Mixture-compressing two-stroke internal combustion engine - Google Patents
Mixture-compressing two-stroke internal combustion engineInfo
- Publication number
- DE653125C DE653125C DESCH107174D DESC107174D DE653125C DE 653125 C DE653125 C DE 653125C DE SCH107174 D DESCH107174 D DE SCH107174D DE SC107174 D DESC107174 D DE SC107174D DE 653125 C DE653125 C DE 653125C
- Authority
- DE
- Germany
- Prior art keywords
- fuel
- internal combustion
- inlet channels
- combustion engine
- mixture
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
-
- 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
- F02B2720/00—Engines with liquid fuel
- F02B2720/15—Mixture compressing engines with ignition device and mixture formation in the cylinder
- F02B2720/152—Mixture compressing engines with ignition device and mixture formation in the cylinder with fuel supply and pulverisation by injecting the fuel under pressure during the suction or compression stroke
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Gemischverdichtende Zweitakt-Brennkraftmaschine Die Erfindung bezieht -sich auf gemischverdichtende Zweitakt - Brennkraftmaschinen mit vom Arbeitskolben gesteuerten Ein- und Auslaßöffnungen und Einspritzung des Brennstoffs in die Einlaßkanäle nahe den Zylinderöffnungen. Sie bezweckt die Vermeidung von Brennstoffverlusten, die bei bekannten Maschinen dieser Art während der Spülung entstehen.Mixture-compressing two-stroke internal combustion engine The invention relates -sich on mixture-compressing two-stroke internal combustion engines with from the working piston controlled inlet and outlet openings and injection of the fuel into the inlet channels near the cylinder openings. It aims to avoid fuel losses, which occur in known machines of this type during flushing.
Es ist bei. Gas- und Vergasermaschinen bekannt, das Brenngas bzw. das Brennstoff-Luft-Gemisch auf der Seite der gegen den Zylinderkopf aufsteigenden Strömung von den Abgasen während der Spülung durch eine Luftschicht zu trennen, die durch zusätzliche Luftkanäle in den Zylinder eingeführt wird. Es kann aber aus irgendwelchen Gründen schwierig bzw.unmöglich sein, außer den für den Verlauf der Spülströmung im Zylinder maßgebenden Kanälen. zusätzliche Einlaßkanäle für die Bildung einer trennenden Luftschicht anzubringen. Der Grund hierfür. wird meist, insbesondere bei kleineren Motoren, die Raum- oder Kostenfrage sein.It is at. Gas and carburetor machines known, the fuel gas or the fuel-air mixture on the side rising towards the cylinder head To separate the flow from the exhaust gases during purging by means of a layer of air, which is introduced into the cylinder through additional air ducts. But it can turn out be difficult or impossible for any reason, except for the course of the Scavenging flow in the cylinder decisive channels. additional inlet channels for the formation to be attached to a separating layer of air. The reason for that. will mostly, in particular with smaller engines, space or cost issues.
Erfindungsgemäß wird eine trennende Luftschicht dadurch gebildet, daß der Brennstoff auf der den Auslaßöffriungen abgewandten Seite der Einlaßkanäle eingespritzt wird. Da bei guter, ,d. h. glatter Ausführung der Spülkanäle in - diesen sich eine laminart Strömung bildet, so kann erreicht werden, daß ohne Vorsehung zusätzlicher Kanäle der den Auslaßöffnungen zugekehrte Teil der Luftströme von Brennstoff frei bleibt. Bei der unvermeidlichen Vermischung gerade dieser Teilströme mit den Abgasen treten daher keine Brennstoffverluste auf.According to the invention, a separating air layer is formed by that the fuel is on the side of the inlet channels facing away from the outlet openings is injected. Since with good,, d. H. smooth execution of the flushing channels in these if a laminar flow is formed, it can be achieved that without any provision additional channels of the part of the air flows of fuel facing the outlet openings remains free. With the inevitable mixing of these partial flows with the There are therefore no fuel losses in exhaust gases.
Die Brennstoffdüsen werden, damit die Gemischbildung jeweils auf die den Auslaßöffnungen abgewandte Seite beschränkt bleibt, zweckmäßig auf dieser Seite des Luftstromes und mit ihm gleichgerichtet oder in der Mitte des Luftstromes schräg nach der den Auslaßöffnungen .abgewandten Seite zeigend angeordnet. Die Einspritzung des Brennstoffes beginnt zweckmäßig erst eine gewisse Zeit nach dem Beginn der Eröffnung der Einlaßkanäle, damit eine Vorspülung mit reiner Luft eintritt, und hört eine gewisse Zeit vor Abschluß der Kanäle auf, damit bei Abschluß der Öffnungen kein Brennstoff mehr in den Kanälen zurückbleibt, der bei Wiedereröffnung sonst verlorengehen würde.The fuel nozzles are so that the mixture formation in each case on the the side facing away from the outlet openings remains limited, expediently on this side of the air flow and rectified with it or obliquely in the middle of the air flow arranged pointing away from the side facing away from the outlet openings. The injection of the fuel expediently begins a certain time after the start of the opening of the inlet ducts so that a pre-purge with clean air occurs, and hears one a certain time before the channels are closed so that no More fuel remains in the channels, which would otherwise be lost when reopening would.
Auf der Zeichnung ist,ein Querschnitt durch einen Zylinder einer Brennkraftmaschine gemäß der Erfindung dargestellt. Mit a ist der Zylinder bezeichnet, b sind die Einlaßöffnungen und c die Auslaßöffnungen. Mittels der Brennstoffpumpe d wird über die Leitungen e Brennstoff während der Spülung durch die Düsen f, g auf der den Auslaßöffnungen abgewandten Seite in die Einlaßkanäle h eingespritzt. Die Düsen f, g sind in den beiden oben beschriebenen vorteilhaften Anordnungen dargestellt.The drawing shows a cross section through a cylinder of an internal combustion engine shown according to the invention. With a the cylinder is designated, b are the inlet openings and c the outlet openings. By means of the fuel pump d is over the lines e Fuel during flushing through nozzles f, g on the outlet openings remote side injected into the inlet channels h. The nozzles f, g are in the shown two advantageous arrangements described above.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DESCH107174D DE653125C (en) | Mixture-compressing two-stroke internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DESCH107174D DE653125C (en) | Mixture-compressing two-stroke internal combustion engine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE653125C true DE653125C (en) | 1937-11-15 |
Family
ID=7448338
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DESCH107174D Expired DE653125C (en) | Mixture-compressing two-stroke internal combustion engine |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE653125C (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE922311C (en) * | 1943-09-10 | 1955-01-13 | Auto Union A G | Mixture compressing two-stroke internal combustion engine |
US2717582A (en) * | 1950-05-22 | 1955-09-13 | Gutbrod Motorenbau Gmbh | Two-stroke injection internal combustion engine |
DE1004887B (en) * | 1952-01-28 | 1957-03-21 | Fritz Werner Ag Maschinen Und | Display and control device for machine tools, in particular milling machines |
DE202016004329U1 (en) | 2016-07-12 | 2016-08-12 | Peter Rieleit | Two-stroke engine with compression and DC purge via an intake spark plug in the cylinder head |
-
0
- DE DESCH107174D patent/DE653125C/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE922311C (en) * | 1943-09-10 | 1955-01-13 | Auto Union A G | Mixture compressing two-stroke internal combustion engine |
US2717582A (en) * | 1950-05-22 | 1955-09-13 | Gutbrod Motorenbau Gmbh | Two-stroke injection internal combustion engine |
DE1004887B (en) * | 1952-01-28 | 1957-03-21 | Fritz Werner Ag Maschinen Und | Display and control device for machine tools, in particular milling machines |
DE202016004329U1 (en) | 2016-07-12 | 2016-08-12 | Peter Rieleit | Two-stroke engine with compression and DC purge via an intake spark plug in the cylinder head |
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