DE531035C - Two-stroke internal combustion engine in which the supply of the scavenging air is under the influence of the controller, which is dependent on the speed of the machine - Google Patents

Two-stroke internal combustion engine in which the supply of the scavenging air is under the influence of the controller, which is dependent on the speed of the machine

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Publication number
DE531035C
DE531035C DEH121033D DEH0121033D DE531035C DE 531035 C DE531035 C DE 531035C DE H121033 D DEH121033 D DE H121033D DE H0121033 D DEH0121033 D DE H0121033D DE 531035 C DE531035 C DE 531035C
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DE
Germany
Prior art keywords
speed
controller
influence
machine
scavenging air
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
DEH121033D
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.)
KONRAD HAAGE DIPL ING
WILHELM TOCHTERMANN
Original Assignee
KONRAD HAAGE DIPL ING
WILHELM TOCHTERMANN
Publication date
Priority to DEH121033D priority Critical patent/DE531035C/en
Application granted granted Critical
Publication of DE531035C publication Critical patent/DE531035C/en
Expired legal-status Critical Current

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Description

Zweitaktmotoren mit durch "Ventile oder Drehschieber gesteuertem Einlaß" der Spülluft sind bekannt. Bekannt ist es auch, diese Steuerungen derart unter den Einfluß eines von der Drehzahl des Motors abhängigen Reglers zu stellen, daß die Drehzahl bei wachsender und fallender Belastung konstant bleibt. Bei richtiger Bemessung der Schlitze und Steuerteile sowie bei entsprechend großer Spülluftp'Umpe läßt sich bei der normalen Drehzahl des Motors mit dieser Einrichtung ohne weiteres ein gründliches Ausspülen und auch ein Überladen des Zylinders erreichen, da die gesteuerten Einlaßvorrichtungen länger offen gehalten werden können als die Auspuffschlitze. Two-stroke engines with "valve or rotary slide controlled intake" of the scavenging air are known. It is also known to have these controls under the influence of a on the speed of the engine dependent controller to set that the speed at increasing and decreasing load remains constant. With correct dimensioning of the slots and control modules as well as a correspondingly large scavenging air pump can be used with the normal Speed of the motor with this device easily a thorough rinsing and also achieve overcharging of the cylinder as the controlled intake devices last longer can be kept open than the exhaust ports.

Sobald aber die Drehzahl des Motors kleiner wird als die normale und damit die Zeitdauer der Öffnung der Auspuff- und Spülluftkanäle größer wird, treten Mißstände auf. Die unter Druck stehenden Spülgase strömen bei kleiner Drehzahl in annähernd der gleichen Zeit in den Zylinder über wie bei hoher Drehzahl. Infolge der kleineren Drehzahl sind jedoch die Auspuffschlitze länger geöffnet, so daß die Mehrförderung der Spülpumpe, statt den Zylinder aufzuladen, durch die noch geöffneten Auspuffschlitze entweicht. Der Fehler dieser Zweitaktmotoren ist, daß sich die Querschnitte und Eröffnungszeiten der Spülluft, die für die normale Drehzahl berechnet sind, veränderten Drehzählen nicht anpassen können. Unregelmäßiger Gang und großer Leistungsabfall bei vergrößertem Brennstoffverbrauch sind die Folge.But as soon as the speed of the motor is lower than the normal and thus the The duration of the opening of the exhaust and scavenging air ducts increases, problems occur. The pressurized purge gases flow at a low speed in approximately the same way Time in the cylinder over like at high speed. As a result of the lower speed However, the exhaust ports are open longer, so that the extra delivery of the scavenging pump, instead of charging the cylinder, through the still open exhaust ports escapes. The fault of these two-stroke engines is that the cross-sections and opening times of the purge air that are required for normal speed are calculated, cannot adapt to changed speeds. Irregular gait and The result is a large drop in performance with increased fuel consumption.

. Im Gegensatz zu Viertaktmotoren arbeitet ■der Zweitaktmotor nur innerhalb eines begrenzten Drehzahlbereiches gut und richtig.. In contrast to four-stroke engines, ■ the two-stroke engine only works within a limited range Speed range good and correct.

Die nachstehend beschriebene Erfindung dient — im Gegensatz zu den obenerwähnten bekannten Anordnungen — nicht zur Leistungsregelung, sondern soll die vorstehend beschriebenen Mißstände beseitigen. Für die Regelung der Leistung ist noch eine besondere weitere Vorrichtung erforderlich.The invention described below serves - in contrast to the above-mentioned known arrangements - not for power control, but should the above eliminate the abuses described. There is another one for regulating the power special additional device required.

In der Figur I und III der Zeichnung ist beispielsweise ein Zweitaktmotor im Längsund Querschnitt gezeichnet, bei dem der Einlaß der Spülluft durch einen Drehschieber a gesteuert wird, durch' dessen Hohlraum das Spülmittel hindurchströmt. An die Stelle des Drehschiebers α können auch durch Nocken gesteuerte Ventile oder eine andere beliebige Steuervorrichtung treten. Der Drehschieber a wird von der Kurbelwelle b aus durch ein starres Getriebe d (z.B. Kette oder Schraubenräder) angetrieben.In FIGS. I and III of the drawing, for example, a two-stroke engine is shown in longitudinal and cross-section, in which the inlet of the scavenging air is controlled by a rotary valve a through whose cavity the washing agent flows. Instead of the rotary slide valve α , valves controlled by cams or any other control device can also be used. The rotary valve a is driven from the crankshaft b by a rigid gear d (eg chain or helical gears).

Um eine gleichmäßige Spülung mit Überladung bei jeder Drehzahl zu erhalten, wird der Drehschieber α unter dem Einfluß eines Reglers c (zweckmäßig Achsregler) um einen Winkel α so verdreht, daß die Öffnung der Spülschlitze e bei hoher Tourenzahl früher (siehe Fig. I) und bei niedriger Drehzahl später (siehe Fig. II) erfolgt. Bei richtig gewähltem Regler kann auf diese Weise mit einfachen Mitteln leicht erreicht werden, daß bei jeder Drehzahl die eigentliche Spülung, d.h. das Austreiben der Auspuffgase gerade beendet ist, wenn sich die Auspuff schlitze f schließen, während darauf die Mehrförderung der Spülpumpe bei geschlossenen Auspuffschlitzen als Mehrladung durch die noch geöffneten Spülschlitze e in den Zylinder gepreßt wird.In order to obtain a uniform flushing with overloading at any speed, the rotary valve α is rotated by an angle α under the influence of a controller c (expediently axis controller) so that the opening of the flushing slots e earlier at high speeds (see Fig. I) and takes place later at low speed (see Fig. II). If the controller is chosen correctly, it can easily be achieved in this way with simple means that the actual purging, ie the expulsion of the exhaust gases is just ended when the exhaust slots f close, while the additional delivery of the scavenging pump with closed exhaust slots as Additional charge is pressed into the cylinder through the still open flushing slots e.

Die Erfindung kann in gleicher Weise sowohl für Zweitaktverpuffungsmotoren als auch für Zweitaktdieselmotoren verwendet werden.The invention can in the same way both for two-stroke deflagration engines as can also be used for two-stroke diesel engines.

Claims (1)

Patentanspruch:Claim: Zweitaktbrennkraftmaschine, bei welcher die Zuführung der Spülluft unter dem Einfluß des von der Drehzahl der Maschine abhängigen Reglers steht, dadurch gekennzeichnet, daß das Spülmittel bei abnehmender Drehzahl der Maschine der jeweiligen Drehzahl entsprechend später einströmt.Two-stroke internal combustion engine, in which the supply of the scavenging air is below the influence of the controller dependent on the speed of the machine, characterized in that the detergent flows in later at a decreasing speed of the machine corresponding to the respective speed. Hierzu 1 Blatt Zeichnungen1 sheet of drawings
DEH121033D Two-stroke internal combustion engine in which the supply of the scavenging air is under the influence of the controller, which is dependent on the speed of the machine Expired DE531035C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH121033D DE531035C (en) Two-stroke internal combustion engine in which the supply of the scavenging air is under the influence of the controller, which is dependent on the speed of the machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH121033D DE531035C (en) Two-stroke internal combustion engine in which the supply of the scavenging air is under the influence of the controller, which is dependent on the speed of the machine

Publications (1)

Publication Number Publication Date
DE531035C true DE531035C (en) 1931-08-10

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DEH121033D Expired DE531035C (en) Two-stroke internal combustion engine in which the supply of the scavenging air is under the influence of the controller, which is dependent on the speed of the machine

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Country Link
DE (1) DE531035C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE942601C (en) * 1948-11-02 1956-05-03 Kloeckner Humboldt Deutz Ag Two-stroke internal combustion engine that works with air compression and self-ignition of the fuel injected towards the end of the compression stroke and is equipped with a special purge blower

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE942601C (en) * 1948-11-02 1956-05-03 Kloeckner Humboldt Deutz Ag Two-stroke internal combustion engine that works with air compression and self-ignition of the fuel injected towards the end of the compression stroke and is equipped with a special purge blower

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