EP0012450A1 - Overspeed preventing device for a fuel injection combustion engine - Google Patents

Overspeed preventing device for a fuel injection combustion engine Download PDF

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Publication number
EP0012450A1
EP0012450A1 EP79105251A EP79105251A EP0012450A1 EP 0012450 A1 EP0012450 A1 EP 0012450A1 EP 79105251 A EP79105251 A EP 79105251A EP 79105251 A EP79105251 A EP 79105251A EP 0012450 A1 EP0012450 A1 EP 0012450A1
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EP
European Patent Office
Prior art keywords
supply line
flap
engine
lever
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.)
Granted
Application number
EP79105251A
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German (de)
French (fr)
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EP0012450B1 (en
Inventor
Roman Mieczyslaw Dr. Ing.-Mech. Blocki
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Wytwornia Silnikow Wysokopreznych "PZL-Andrychow"
WYTWORNIA SILNIKOW WYSOKOPREZN
Original Assignee
Wytwornia Silnikow Wysokopreznych "PZL-Andrychow"
WYTWORNIA SILNIKOW WYSOKOPREZN
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
Priority claimed from PL21187278A external-priority patent/PL120909B1/en
Priority claimed from PL21845579A external-priority patent/PL124148B3/en
Application filed by Wytwornia Silnikow Wysokopreznych "PZL-Andrychow", WYTWORNIA SILNIKOW WYSOKOPREZN filed Critical Wytwornia Silnikow Wysokopreznych "PZL-Andrychow"
Priority to AT79105251T priority Critical patent/ATE3664T1/en
Publication of EP0012450A1 publication Critical patent/EP0012450A1/en
Application granted granted Critical
Publication of EP0012450B1 publication Critical patent/EP0012450B1/en
Expired legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
    • F02D17/04—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling rendering engines inoperative or idling, e.g. caused by abnormal conditions

Definitions

  • the invention relates to a device for securing a fuel injection internal combustion engine before running away or overturning.
  • PL-PS 60 919 for example, a solution is known in which, using a system of lines and valves, the pump in the fuel supply line which supplies the fuel to the engine for sucking off the fuel located in the supply and overflow lines of the injection pumps is exploited.
  • PL-PS 85 421 a safety device is also known, which is designed for use with injection pumps with reciprocating pistons provided engines.
  • the piston is separated from its tappet by a slidably movable lower plate, which forms two separate, closed chambers in the pump housing, one of which contains the piston and the other contains the tappet.
  • This device is equipped with a system which, when the maximum permissible speed of the engine is reached, enables the compressed gas to be supplied to the second chamber, under a pressure which results in the displacement and separation of the lower plate and thus also the piston from the plunger, as a result of which the Injection pump is stopped.
  • a disadvantage of the two solutions described above is that the devices have to receive an external pulse to operate them, e.g. from a device detecting the maximum permissible speed.
  • the second solution described above also has the disadvantages that the device is to be equipped with a pressurized gas source and has a limited area of application, because it is intended exclusively for engines provided with reciprocating pistons for injection pumps and is unsuitable for engines equipped with distributor injection pumps.
  • the object of the invention is to develop a device for securing a fuel injection internal combustion engine against over-revving, which works on a different principle than the known solutions and does not have the disadvantages mentioned above.
  • the device according to the invention protects the internal combustion engine equipped therewith from running away, for example in the event of damage to the speed controller or the injection pump, whereby it causes the supply of air to the cylinders of the engine after the maximum permissible speed of the engine has been reached Engine shut off.
  • the device according to the invention does not have the above-mentioned disadvantages of the known solutions and is also simple and therefore inexpensive and reliable in operation.
  • a shut-off device is arranged in the air supply line 1 of the engine, specifically in the form of a pivotable flap 2, which is placed on a shaft 3 mounted in bores formed in the walls of the supply line.
  • the shaft 3 runs vertically and at a certain distance from the axis of the feed line 1.
  • a lever 4 connected to a tension spring 5 is also mounted on the shaft 3.
  • the feed line 1 is provided with a constriction, the surface perpendicular to the axis of the feed line 1 forming a support surface 6 for the flap 2.
  • the flap 2 under the action of the tension spring 5 and a stop 7, against which the lever 4 is supported, is arranged at an angle ⁇ to the axis of the feed line 1, it being advantageous if the angle ⁇ is as possible is small in order to keep the air flow resistances in the supply line 1 of the engine as low as possible.
  • the variant of the safety device according to the invention shown in FIG. 3 is equipped with a pneumatic cylinder in the form of a bellows 8, the interior of which is connected to the supply line 1 via the line 10 of the engine is connected. Furthermore, one bottom of the bellows 8 is connected to the lever 4 of the flap 2 by means of a plunger 9, while the other bottom of the bellows 8 is arranged in a stationary manner.
  • a pneumatic cylinder of a different type can of course be used, such as a piston or membrane cylinder.
  • the bellows 8 filled with the air feeding the motor exerts a certain force on the lever-4.
  • the magnitude of this force depends on the pressure and thus also on the density of the supply air, which is variable in a loading motor.
  • the bellows 8 is connected to the lever 4 in such a way that the direction of action of the torque caused by the force exerted by the bellows 8 on the lever 4 corresponds to the direction of action of the torque caused by the force exerted by the tension spring 5 on the lever 4.
  • the bellows 8 is designed so that at the maximum permissible speed of the engine, the summary of the torque coming from the bellows 8 and the tension spring 5 on the lever 4 by the dynamic pressure of the air on the flap 2 regardless of the air density in the torque caused by the feed line 1 of the motor is approximately the same. This compensates for the influence of the density of the air feeding the engine.
  • FIG. 3 The operation of the embodiment of FIG. 3 is otherwise the same as the safety device shown in FIGS. 1 and 2.
  • the device according to the invention can be used both for engines during tests on an engine test bench and for engines working in vehicles and work machines.

Abstract

Zur Schaffung einer eigenbetätigten Vorrichtung dieser Art mit einfachem Aufbau und zuverlässigem Betriebsverhalten weist diese ein in der Zufuhrleitung (1) des Motors angeordnetes und von der durchfließenden Luft gesteuertes Absperrorgan in Form einer schwenkbaren Klappe (2) auf, das zum Schließen der Zufuhrleitung (1) bei einer bestimmten, der höchstzulässigen Drehzahl des Motors entsprechenden Durchflußgeschwindigkeit der Luft dient.In order to create a self-actuated device of this type with a simple structure and reliable operating behavior, it has a shut-off element in the form of a pivotable flap (2) which is arranged in the supply line (1) of the motor and is controlled by the air flowing through and which is used to close the supply line (1). at a certain flow rate of air corresponding to the maximum permissible speed of the motor.

Description

Die Erfindung betrifft eine Vorrichtung zur Sicherung eines Kraftstoffeinspritz-Verbrennungsmotors vor einem Durchgehen bzw. überdrehen.The invention relates to a device for securing a fuel injection internal combustion engine before running away or overturning.

Bekannt sind Vorrichtungen und Systeme zur Sicherung von Kraftstoffeinspritz-Verbrennungsmotoren vor einem Überdrehen, welche bewirken, daß die Kraftstoffeinspritzung im Falle des Erreichens der höchstzulässigen Drehzahl des Motors unterbrochen wird. Aus der PL-PS 60 919 ist z.B. eine Lösung bekannt, bei welcher unter Verwendung eines Systems von Leitungen und Ventilen die in der Kraftstoffzufuhrleitung vorhandene, den Kraftstoff zu dem Motor zuführende Pumpe zum Absaugen des sich in den Zuführ- und Uberlaufleitungen der Einspritzpumpen befindlichen Kraftstoffs ausgenutzt wird. Aus der PL-PS 85 421 ist ferner eine Sicherungsvorrichtung bekannt, welche zum Einsatz mit Einspritzpumpen mit hin- und herbeweglichen Kolben versehenen Motoren ausgelegt ist. In einer derartigen Pumpe ist der Kolben von seinem Stößel durch eine gleitend bewegliche Unterplatte getrennt, welche in dem Pumpengehäuse zwei separate, geschlossene Kammern ausbildet, von denen die eine den Kolben und die andere den Stößel enthält. Diese Vorrichtung ist mit einem System ausgestattet, das im Falle des Erreichens der höchstzulässigen Drehzahl des Motors die Zuführung des Druckgases zur zweiten Kammer ermöglicht, und zwar unter einem die Abschiebung und Abtrennung der Unterplatte und somit auch des Kolbens von dem Stößel ergebenden Druck, wodurch die Einspritzpumpe stillgesetzt wird.Devices and systems for securing fuel injection internal combustion engines from over-revving are known, which have the effect that the fuel injection is interrupted when the maximum permissible engine speed is reached. From PL-PS 60 919, for example, a solution is known in which, using a system of lines and valves, the pump in the fuel supply line which supplies the fuel to the engine for sucking off the fuel located in the supply and overflow lines of the injection pumps is exploited. From PL-PS 85 421 a safety device is also known, which is designed for use with injection pumps with reciprocating pistons provided engines. In such a pump, the piston is separated from its tappet by a slidably movable lower plate, which forms two separate, closed chambers in the pump housing, one of which contains the piston and the other contains the tappet. This device is equipped with a system which, when the maximum permissible speed of the engine is reached, enables the compressed gas to be supplied to the second chamber, under a pressure which results in the displacement and separation of the lower plate and thus also the piston from the plunger, as a result of which the Injection pump is stopped.

Ein Nachteil der beiden oben beschriebenen Lösungen besteht darin, daß die Vorrichtungen zu ihrer Betätigung einen Impuls von außen erhalten müssen, z.B. von einer die höchstzulässige Drehzahl erfassenden Einrichtung. Die zweite oben beschriebene Lösung weist überdies die Nachteile auf, daß die Vorrichtung mit einer Druckgasquelle auszurüsten ist und einen beschränkten Anwendungsbereich aufweist, weil sie ausschließlich für mit Einspritzpumpen mit hin-und herbeweglichen Kolben versehene Motoren bestimmt und für mit Verteilereinspritzpumpen ausgerüstete Motoren ungeeignet ist.A disadvantage of the two solutions described above is that the devices have to receive an external pulse to operate them, e.g. from a device detecting the maximum permissible speed. The second solution described above also has the disadvantages that the device is to be equipped with a pressurized gas source and has a limited area of application, because it is intended exclusively for engines provided with reciprocating pistons for injection pumps and is unsuitable for engines equipped with distributor injection pumps.

Aufgabe der Erfindung ist es, eine Vorrichtung zur Sicherung eines Kraftstoffeinspritz-Verbrennungsmotors vor einem Überdrehen zu entwickeln, welche mit einem anderen Prinzip als die bekannten Lösungen arbeitet und die genannten Nachteile derselben nicht aufweist.The object of the invention is to develop a device for securing a fuel injection internal combustion engine against over-revving, which works on a different principle than the known solutions and does not have the disadvantages mentioned above.

Diese Aufgabe wird durch die im Anspruch 1 gekennzeichnete Erfindung gelöst.This object is achieved by the invention characterized in claim 1.

Zweckmäßige Weiterbildungen des Erfindungsgegenstands ergeben sich aus den übrigen Ansprüchen.Appropriate developments of the subject matter of the invention result from the remaining claims.

Die erfindungsgemäße Vorrichtung schützt den damit ausgerüsteten Verbrennungsmotor vor einem Durchgehen z.B. im Falle einer Beschädigung des Drehzahlreglers oder der Einspritzpumpe, wobei sie bewirkt, daß sie nach Erreichen der höchstzulässigen Drehzahl des Motors die Zufuhr der Luft zu den Zylindern des Motors absperrt. Die erfindungsgemäße Vorrichtung weist nicht die oben genannten Nachteile der bekannten Lösungen auf und ist überdies einfach und dadurch billig und im Betrieb zuverlässig.The device according to the invention protects the internal combustion engine equipped therewith from running away, for example in the event of damage to the speed controller or the injection pump, whereby it causes the supply of air to the cylinders of the engine after the maximum permissible speed of the engine has been reached Engine shut off. The device according to the invention does not have the above-mentioned disadvantages of the known solutions and is also simple and therefore inexpensive and reliable in operation.

Die erfindungsgemäße Sicherun'gsvörrichtung wird nachstehend anhand von Ausführungsbeispielen näher erläutert. In den zugehörigen Zeichnungen zeigt

  • Fig. 1 ein Schema der Vorrichtung beim Normalbetrieb des Motors,
  • Fig. 2 ein Schema der Vorrichtung während des Notstillsetzens des Motors, und
  • Fig. 3 ein Schema einer für Lademotoren bestimmten Variante der Sicherungsvorrichtung, wobei

in den Fig. 1 und 3 mit Pfeilen die Richtung des Luftdurchflusses in der Zufuhrleitung des Motors bezeichnet ist.The safety device according to the invention is explained in more detail below on the basis of exemplary embodiments. In the accompanying drawings
  • 1 is a diagram of the device during normal operation of the engine,
  • Fig. 2 is a diagram of the device during the emergency stop of the engine, and
  • Fig. 3 is a diagram of a variant of the safety device intended for loading motors, wherein

1 and 3, the direction of the air flow in the supply line of the motor is indicated by arrows.

Wie in Fig. 1 und 2 dargestellt, ist in der Luftzufuhrleitung 1 des Motors ein Absperrorgan angeordnet, und zwar in Form einer schwenkbaren Klappe 2, welche auf eine in in den Wänden der Zufuhrleitung ausgebildeten Bohrungen gelagerten Welle 3 aufgesetzt ist. Die Welle 3 verläuft senkrecht und in einem gewissen Abstand zur Achse der Zufuhrleitung 1. Auf der Welle 3 ist ferner ein mit einer Zugfeder 5 verbundener Hebel 4 gelagert. Die Zufuhrleitung 1 ist mit einer Verengung versehen, deren zur Achse der Zufuhrleitung 1 senkrechte Fläche eine Stützfläche 6 für die Klappe 2 bildet.As shown in FIGS. 1 and 2, a shut-off device is arranged in the air supply line 1 of the engine, specifically in the form of a pivotable flap 2, which is placed on a shaft 3 mounted in bores formed in the walls of the supply line. The shaft 3 runs vertically and at a certain distance from the axis of the feed line 1. A lever 4 connected to a tension spring 5 is also mounted on the shaft 3. The feed line 1 is provided with a constriction, the surface perpendicular to the axis of the feed line 1 forming a support surface 6 for the flap 2.

Während des Normalbetriebs des Motors ist die Klappe = 2 unter der Wirkung der Zugfeder 5 und eines Anschlags 7, gegen welchen sich der Hebel 4 abstützt, unter einem Winkel α zur Achse der Zufuhrleitung 1 angeordnet, wobei es vorteilhaft ist, wenn der Winkel α möglichst klein ist, um die Luftdurchflußwiderstände in der Zufuhrleitung 1 des Motors möglichst niedrig zu halten.During normal operation of the engine, the flap = 2 under the action of the tension spring 5 and a stop 7, against which the lever 4 is supported, is arranged at an angle α to the axis of the feed line 1, it being advantageous if the angle α is as possible is small in order to keep the air flow resistances in the supply line 1 of the engine as low as possible.

Als Folge der Einstellung der Klappe 2 unter dem Winkel α zur Achse der Zufuhrleitung 1 (Fig. 1) bewirkt der dynamische Druck der durchfließenden Luft das Auftreten eines Drehmoments, das bestrebt ist, die Klappe 2 in Richtung der Stützfläche 6 zu schwenken. Während des Normalbetriebes des Motors wird die Klappe 2 unter der Wirkung der Zugfeder 5 in dieser Stellung gehalten, da deren Vorspannung so gewählt ist, daß diese dem Druck der Luft auf die Klappe 2 bis zu der höchstzulässigen Drehzahl des Motors effektiv entgegenwirkt. Oberhalb dieser.Drehzahl ist die Kraft aufgrund des Druckes auf die Klappe 2 größer als die Kraft der Zugfeder 5', so daß die Klappe 2 geschwenkt wird, bis sie sich gegen die Stützfläche 6 (Fig. 2) abstützt und die Zufuhrleitung 1 abschließt. Das Schließen der Zufuhrleitung 1 bewirkt ein Unterbrechen der Luftzufuhr zu den Zylindern des Motors, wodurch dieser als Folge des Mangels an zum Verbrennungsprozeß erforderlicher Luft stillgesetzt wird.As a result of the setting of the flap 2 at the angle α to the axis of the supply line 1 (FIG. 1), the dynamic pressure of the air flowing through causes the occurrence of a torque which tends to pivot the flap 2 in the direction of the support surface 6. During normal operation of the engine, the flap 2 is held in this position under the action of the tension spring 5, since its pretension is selected so that it effectively counteracts the pressure of the air on the flap 2 up to the maximum permissible speed of the engine. Above this speed, the force due to the pressure on the flap 2 is greater than the force of the tension spring 5 ' , so that the flap 2 is pivoted until it is supported against the support surface 6 (FIG. 2) and the supply line 1 closes. Closing the supply line 1 causes the air supply to the cylinders of the engine to be cut off, thereby stopping it as a result of the lack of air required for the combustion process.

Die in Fig. 3 dargestellte Variante der erfindungsgemäßen Sicherungsvorrichtung ist mit einem Pneumatikzylinder in Form eines Balgs 8 ausgerüstet, dessen Innenraum über die Leitung 10 mit der Zufuhrleitung 1 des Motors verbunden ist. Ferner ist der eine Boden des Balgs 8 mittels eines Stößels 9 mit dem Hebel 4 der Klappe 2 verbunden, während der andere Boden des Balgs 8 ortsfest angeordnet ist. Anstatt des Balgs 8 kann natürlich ein Pneumatikzylinder einer anderen Bauart zum Einsatz kommen, wie z.B. ein Kolben- oder Membranzylinder.The variant of the safety device according to the invention shown in FIG. 3 is equipped with a pneumatic cylinder in the form of a bellows 8, the interior of which is connected to the supply line 1 via the line 10 of the engine is connected. Furthermore, one bottom of the bellows 8 is connected to the lever 4 of the flap 2 by means of a plunger 9, while the other bottom of the bellows 8 is arranged in a stationary manner. Instead of the bellows 8, a pneumatic cylinder of a different type can of course be used, such as a piston or membrane cylinder.

Der mit der den Motor speisenden Luft aufgefüllte Balg 8 übt auf den Hebel-4 eine gewisse Kraft aus. Die Größe dieser Kraft hängt von dem Druck und somit auch von der Dichte der Speiseluft ab, die bei einem Lademotor veränderlich ist. Der Balg 8 ist derart mit dem Hebel 4 verbunden, daß die Wirkungsrichtung des durch die durch den Balg 8 auf den Hebel 4 ausgeübte Kraft hervorgerufenen Drehmoments übereinstimmt mit der Wirkungsrichtung des durch die durch die Zugfeder 5 auf den Hebel 4 ausgeübte Kraft bewirkten Drehmoments. Der Balg 8 ist dabei so ausgelegt, daß bei der höchstzulässigen Drehzahl des Motors das summarische, von der durch den Balg 8 und die Zugfeder 5 auf den Hebel 4 stammende Drehmoment dem durch den dynamischen Druck der Luft auf die Klappe 2 unabhängig von der Luftdichte in der Zufuhrleitung 1 des Motors hervorgerufenen Drehmoment annähernd gleich ist. Dadurch wird der Einfluß der Dichte der den Motor speisenden Luft kompensiert.The bellows 8 filled with the air feeding the motor exerts a certain force on the lever-4. The magnitude of this force depends on the pressure and thus also on the density of the supply air, which is variable in a loading motor. The bellows 8 is connected to the lever 4 in such a way that the direction of action of the torque caused by the force exerted by the bellows 8 on the lever 4 corresponds to the direction of action of the torque caused by the force exerted by the tension spring 5 on the lever 4. The bellows 8 is designed so that at the maximum permissible speed of the engine, the summary of the torque coming from the bellows 8 and the tension spring 5 on the lever 4 by the dynamic pressure of the air on the flap 2 regardless of the air density in the torque caused by the feed line 1 of the motor is approximately the same. This compensates for the influence of the density of the air feeding the engine.

Die Wirkungsweise des Ausführungsbeispiels nach Fig. 3 ist im übrigen gleich der in den Fig. 1 und 2 dargestellten Sicherungsvorrichtung.The operation of the embodiment of FIG. 3 is otherwise the same as the safety device shown in FIGS. 1 and 2.

Die erfindungsgemäße Vorrichtung kann sowohl für Motoren während der Prüfungen auf einem Motorenprüfstand, als auch für in Fahrzeugen und Arbeitsmaschinen arbeitenden Motoren eingesetzt werden.The device according to the invention can be used both for engines during tests on an engine test bench and for engines working in vehicles and work machines.

Claims (5)

1. Vorrichtung zur Sicherung eines. Kraftstoffeinspritz-Verbrennungsmotors vor einem Überdrehen, dadurch gekennzeichnet, daß in der Luftzufuhrleitung (1) des Motors ein von der durchfließenden Luft gesteuertes Absperrorgan (2) angeordnet ist, das zum Absperren der Zufuhrleitung (1) bei einer bestimmten, der höchstzulässigen Drehzahl des Motors entsprechenden Durchflußgeschwindigkeit der Luft dient.1. Device for securing a. Fuel injection internal combustion engine before over-revving, characterized in that a shut-off element (2), which is controlled by the air flowing through, is arranged in the air supply line (1) of the engine and is used to shut off the supply line (1) at a specific speed which corresponds to the maximum permissible speed of the engine Flow rate of the air is used. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Absperrorgan eine schwenkbare Klappe (2) ist, die auf einer in in den Wänden der Zufuhrleitung (1) ausgeführten Bohrungen gelagerten Welle (3) aufgesetzt ist, in einer zur Achse der Zufuhrleitung (1) senkrechten Ebene und in einem gewissen Abstand von der Achse der Zufuhrleitung (1) angeordnet ist,und auf der ein Hebel (4) drehfest angeordnet ist, der mit einer Zugfeder (5) verbunden ist, die während des Normalbetriebes des Motors zur Einstellung der Klappe (2) unter einem Winkel (oC,) zu der Achse der Zufuhrleitung (1) dient.2. Apparatus according to claim 1, characterized in that the shut-off element is a pivotable flap (2) which is placed on a shaft (3) mounted in the walls of the supply line (1), in one of the axes of the supply line ( 1) vertical plane and at a certain distance from the axis of the feed line (1), and on which a lever (4) is arranged in a rotationally fixed manner, which is connected to a tension spring (5), which is used for adjustment during normal operation of the motor the flap (2) at an angle (oC,) to the axis of the feed line (1). 3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß die Zufuhrleitung (1) des Motors mit einer Verengung versehen ist, dessen zu der Achse der Zufuhrleitung (1) senkrechte Fläche eine Stützfläche (6) für die Klappe (2) bildet.3. Apparatus according to claim 2, characterized in that the feed line (1) of the motor is provided with a constriction, the surface perpendicular to the axis of the feed line (1) forms a support surface (6) for the flap (2). 4. Vorrichtung nach Anspruch 2 oder 3, dadurch gekennzeichnet, daß sie mit einem Pneumatikzylinder (8). ausgestattet ist, der mechanisch mit dem Hebel (4) der Klappe (2) gekuppelt ist und eine pneumatische Verbindung mit der Zufuhrleitung (1) aufweist.4. Apparatus according to claim 2 or 3, characterized in that it with a pneumatic cylinder (8). is equipped, which is mechanically coupled to the lever (4) of the flap (2) and has a pneumatic connection to the supply line (1). 5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß der Pneumatikzylinder durch einen Balg (8) gebildet ist, dessen einer Boden mittels eines Stößels (9) mit dem Hebel (4) der Klappe (2) zusammenwirkt und dessen Innenraum mit der Zufuhrleitung (1) des Motors verbunden ist.5. The device according to claim 4, characterized in that the pneumatic cylinder is formed by a bellows (8), one bottom of which cooperates with a lever (9) with the lever (4) of the flap (2) and whose interior with the supply line ( 1) the engine is connected.
EP79105251A 1978-12-18 1979-12-18 Overspeed preventing device for a fuel injection combustion engine Expired EP0012450B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79105251T ATE3664T1 (en) 1978-12-18 1979-12-18 DEVICE FOR SECURING A FUEL INJECTED COMBUSTION ENGINE AGAINST OVERSPEED.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
PL211872 1978-12-18
PL21187278A PL120909B1 (en) 1978-12-18 1978-12-18 Apparatus protecting an injection-type internal compustion engine against overspeedingja s vpryskom topliva ot raznosa
PL218455 1979-09-22
PL21845579A PL124148B3 (en) 1979-09-22 1979-09-22 Apparatus for protecting an injected fuel internal combustion engine against overspeeding

Publications (2)

Publication Number Publication Date
EP0012450A1 true EP0012450A1 (en) 1980-06-25
EP0012450B1 EP0012450B1 (en) 1983-06-01

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EP79105251A Expired EP0012450B1 (en) 1978-12-18 1979-12-18 Overspeed preventing device for a fuel injection combustion engine

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US (1) US4323040A (en)
EP (1) EP0012450B1 (en)
DE (1) DE2965596D1 (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
US5056482A (en) * 1989-12-01 1991-10-15 Fuji Heavy Industries Ltd. Engine protecting system

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Publication number Priority date Publication date Assignee Title
DE3406119A1 (en) * 1984-02-21 1985-08-22 Fa. Andreas Stihl, 7050 Waiblingen TWO-STROKE ENGINE
DE3509540A1 (en) * 1985-03-16 1986-09-18 Fa. Andreas Stihl, 7050 Waiblingen TWO-STROKE ENGINE
JPH09151753A (en) * 1995-11-28 1997-06-10 Sanshin Ind Co Ltd Two-cycle engine with catalyst

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DE2965596D1 (en) 1983-07-07
US4323040A (en) 1982-04-06
EP0012450B1 (en) 1983-06-01

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