EP0781910B1 - Gas operating device for mounting on soil densification machine used in internal combustion engines with membrane carburettor - Google Patents
Gas operating device for mounting on soil densification machine used in internal combustion engines with membrane carburettor Download PDFInfo
- Publication number
- EP0781910B1 EP0781910B1 EP96120893A EP96120893A EP0781910B1 EP 0781910 B1 EP0781910 B1 EP 0781910B1 EP 96120893 A EP96120893 A EP 96120893A EP 96120893 A EP96120893 A EP 96120893A EP 0781910 B1 EP0781910 B1 EP 0781910B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shut
- adjusting
- valve
- adjusting member
- adjusting element
- 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 - Lifetime
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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
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/02—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for hand-held tools
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D11/00—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated
- F02D11/04—Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated characterised by mechanical control linkages
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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
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- 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
- F02M17/00—Carburettors having pertinent characteristics not provided for in, or of interest apart from, the apparatus of preceding main groups F02M1/00 - F02M15/00
- F02M17/02—Floatless carburettors
- F02M17/04—Floatless carburettors having fuel inlet valve controlled by diaphragm
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- 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
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- 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
- F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S123/00—Internal-combustion engines
- Y10S123/11—Antidieseling
Definitions
- the invention relates to a gas actuation device for Attachment to soil compaction equipment certain, a membrane carburetor and a lockable connection between a fuel tank and internal combustion engines having the carburetor with an actuator that changes the carburetor position optionally in several switch positions, from full load to Idle to a switching position stopping the engine and back, is movable.
- float carburettors are not suitable for applications, where they are exposed to inclinations and / or strong vibrations because there is a risk of flooding or the carburettors are subject to heavy wear. Soil compaction equipment are often such operating situations exposed, which is why their engines prefer membrane gasifiers be equipped (see e.g. DE-A-674 170).
- Membrane carburettors of the simple series that only have one membrane for fuel control, but also with a carburetor additional second membrane for fuel delivery are much more suitable for vibration machines, however can because of the strong vibrations, but also because of wear and pollution, not assumed with certainty be that these carburetors after stopping the Motors are absolutely reliably sealed.
- the invention has for its object a gas actuation device of the type described at the beginning that after the engine stops, the interruption the line connection between the fuel tank and the carburetor is reliably guaranteed, regardless of whether the The device operates when the engine is stopped It is necessary to know that the fuel tap or the respective one provided shut-off device in the fuel line in Lock position must be transferred.
- This object is achieved in that in the Path of movement of the actuator between the idle position and the stop position arranged a blocking position and such is designed that when passing the blocking position of the idle to stop position the line connection between Fuel tank and carburetor interrupted and when passing the blocking position in the opposite direction this line connection is opened again.
- the engine should stop immediately the movement of the actuator will continue continue in the same direction until the stop position is reached is where, according to a preferred embodiment in the Movement path of the actuator can be actuated by this Short circuit button is arranged.
- this Short circuit button is arranged.
- a switch to turn off the breaker line is provided. Since the actuator for starting the engine the stop position back into one assigned to engine operation Position must be transferred, the short circuit becomes at the same time canceled or the interrupter line switched on again, the shut-off device is opened again and the Line connection between the fuel tank and the carburetor restored.
- An advantageous embodiment consists of a gas actuation device with one in the line connection between Fuel tank and carburetor arranged, mechanically operated Shut-off valve in that one for actuating the shut-off valve suitable mechanical setting connection between the actuator and the shut-off valve a first, with the shut-off valve connected actuator includes a Control cam with a second, belonging to the actuator Actuator is adjustably connected, according to an advantageous Training the first actuator in its the Biased opening position of the shut-off valve assigned position is and under the effect of this bias protrudes into the path of the second actuator that it is from this second actuator against the effect of the bias in its position assigned to the blocking position of the shut-off valve is pressed as long as the actuator in one on the Idle position following and up to the stop position, this including, leading, blocking web section.
- the actuator comprises a pivot lever, which has a control cam on which the first actuator under the effect of the bias in one is approximately radial direction with respect to the actuating lever axis.
- first actuator under the effect of the bias on one its movement limiting stop is present and that the second actuator is assigned to the first actuator such that an operative connection as long as there is between the two actuators the actuator is located in its blocking path section.
- DD 80589 shows and describes a fuel switching device for carburetors of internal combustion engines, which at one such carburetor the idle device after turning off the Switching off the ignition or in overrun mode, the shutdown by means of an electromagnetic valve.
- FIG. 1 A soil compactor 10, which is only through a tubular Part of its frame is shown by a Combustion engine operated by gasoline part of the carburetor 12 can be seen in FIG Throttle valve can be actuated by a lever 14.
- a Bowden cable 16 On the lever 14 attacks a Bowden cable 16, the other end with one about an axis 20 (Fig. 1) pivotable lever 22 connected is and together with this an actuator 18 for Control of the engine forms.
- a handle 24 (Fig.3) provided lever 22 in its one end position, the full load position D, from which it in Fig.
- the lever 14 is provided with an eccentric cam 26 which a short circuit button 28 when the stop position is reached actuated and the engine is immediately stopped.
- Fig. 2 denotes the starting device for the engine.
- a fuel line leads from a fuel tank 30 (FIG. 3) 32 to a shut-off valve 34 and from its outlet 36 on to the carburetor 12.
- the shut-off valve 34 contains one biased into the open position by a spring 39 Valve slide 40, which out of the valve housing 42 in a Relates to the axis 20 radial direction and the a control cam 44 is assigned to the control lever 22.
- This Control curve 44 has a cam-like elevation 46, the is suitable, the valve spool 40 against the action of To press valve spring 39 into its locked position when the Setting lever 24, starting from position C, position B reached. In the locked position of the valve spool 40 is the Supply of the carburetor 12 from the fuel tank 30 completely interrupted.
Description
Die Erfindung betrifft eine Gasbetätigungsvorrichtung für zum Anbau an Bodenverdichtungsgeräte bestimmte, einen Membranvergaser und eine absperrbare Verbindung zwischen einem Treibstofftank und dem Vergaser aufweisende Verbrennungsmotoren mit einem Stellorgan, das zur Veränderung der Vergaserstellung wahlweise in mehrere Schaltstellungen, von Vollast über Leerlauf in eine den Motor stoppende Schaltstellung und zurück, bewegbar ist.The invention relates to a gas actuation device for Attachment to soil compaction equipment certain, a membrane carburetor and a lockable connection between a fuel tank and internal combustion engines having the carburetor with an actuator that changes the carburetor position optionally in several switch positions, from full load to Idle to a switching position stopping the engine and back, is movable.
Viertaktmotoren der kleineren Bauweise, aber auch Zweitaktmotoren werden üblicherweie mit Schwimmervergasern ausgerüstet. Schwimmervergaser eignen sich jedoch nicht für Einsatzzwecke, wo sie Schräglagen und/oder starken Vibrationen ausgesetzt sind, weil dadurch die Gefahr einer Überflutung beteht bzw. die Vergaser starkem Verschleiß ausgesetzt sind. Bodenverdichtungsgeräte sind häufig derartigen Betriebssituationen ausgesetzt, weshalb ihre Motoren bevorzugt mit Membranvergasern ausgerüstet werden (siehe z.B. DE-A-674 170).Four-stroke engines of the smaller design, but also two-stroke engines are usually equipped with float gasifiers. However, float carburettors are not suitable for applications, where they are exposed to inclinations and / or strong vibrations because there is a risk of flooding or the carburettors are subject to heavy wear. Soil compaction equipment are often such operating situations exposed, which is why their engines prefer membrane gasifiers be equipped (see e.g. DE-A-674 170).
Membranvergaser der einfachen Baureihe, die nur eine Membran zur Treibstoffregelung aufweisen, aber auch Vergaser mit einer zusätzlichen zweiten Membran zur Treibstoffförderung sind für Vibrationsmaschinen wesentlich besser geeignet, jedoch kann aufgrund der starken Vibrationen, aber auch wegen Verschleiß und Verschmutzung, nicht mit Sicherheit davon ausgegangen werden, daß diese Vergaser nach dem Stillsetzen der Motoren absolut zuverlässig dicht sind. Membrane carburettors of the simple series that only have one membrane for fuel control, but also with a carburetor additional second membrane for fuel delivery are much more suitable for vibration machines, however can because of the strong vibrations, but also because of wear and pollution, not assumed with certainty be that these carburetors after stopping the Motors are absolutely reliably sealed.
Insbesondere bei längerer Arbeitsunterbrechung ist es daher notwendig, daß die in der Leitungsverbindung zwischen dem meist höher gelegenen Treibstofftank und dem Vergaser befindliche Absperrvorrichtung nach dem Stillsetzen des Motors zuverlässig geschlossen wird. Andernfalls besteht die Gefahr, daß der Motor überflutet wird, so z.B. bei hängenden Motoren, daß das Benzin-Öl-Gemisch in den Zylinderkopf läuft, oder daß bei stehend angeordneten Motoren das Gemisch in das Kurbelgehäuse des Motors fließt.It is therefore particularly in the case of long breaks necessary that the in the line connection between the usually higher fuel tank and the carburetor Shut-off device reliable after stopping the engine is closed. Otherwise there is a risk that the engine is flooded, e.g. with hanging motors, that the gasoline-oil mixture runs into the cylinder head, or that the mixture in the crankcase in the case of upright engines of the engine flows.
In beiden Fällen ergeben sich aufgrund des Treibstoffüberschusses Startschwierigkeiten.In both cases, there is excess fuel Starting difficulties.
Der Erfindung liegt die Aufgabe zugrunde, eine Gasbetätiungsvorrichtung der eingangs beschriebenen Art so auszubilden, daß nach dem Stillsetzen des Motors die Unterbrechung der Leitungsverbindung zwischen Treibstofftank und Vergaser zuverlässig gewährleistet ist, unabhängig davon, ob der das Gerät Bedienende sich jeweils beim Stillsetzen des Motors der Notwendigkeit bewußt ist, daß der Benzinhahn bzw. die jeweils vorgesehene Absperrvorrichtung in der Treibstoffleitung in Sperrstellung überführt werden muß.The invention has for its object a gas actuation device of the type described at the beginning that after the engine stops, the interruption the line connection between the fuel tank and the carburetor is reliably guaranteed, regardless of whether the The device operates when the engine is stopped It is necessary to know that the fuel tap or the respective one provided shut-off device in the fuel line in Lock position must be transferred.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß in der Bewegungsbahn des Stellorgans zwischen der Leerlaufstellung und der Stoppstellung eine Sperrstellung angeordnet und derart gestaltet ist, daß beim Passieren der Sperrstellung von der Leerlauf- zur Stoppstellung die Leitungsverbindung zwischen Treibstofftank und Vergaser unterbrochen und beim Passieren der Sperrstellung in Gegenrichtung diese Leitungsverbindung wieder geöffnet wird.This object is achieved in that in the Path of movement of the actuator between the idle position and the stop position arranged a blocking position and such is designed that when passing the blocking position of the idle to stop position the line connection between Fuel tank and carburetor interrupted and when passing the blocking position in the opposite direction this line connection is opened again.
Der Bedienende muß bei dieser Konstruktion zur Motorsteuerung nur ein einziges Stellorgan betätigen, wobei die einzelnen Schaltstellungen des Stellorgans eine logische Reihenfolge aufweisen. Bei einer kurzen Arbeitsunterbrechung kann das Stellorgan von der Vollgasstellung in den Leerlauf überführt werden und durch eine gegenläufige Bewegung des Stellorgans kann die Motorleistung jederzeit wieder erhöht werden. Soll der Motor stillgesetzt werden, wird die Bewegung des Stellorgans von der Vollgasstellung in die Leerlaufstellung in gleicher Richtung fortgesetzt, d.h. die Leerlaufstellung wird in Richtung auf die Stoppstellung verlassen. Diese Bewegung führt zunächst in eine Position, in der die Absperrvorrichtung in der Treibstoffleitung in die Schließstellung überführt wird, wodurch der Motor zu Stillstand kommt, wenn die auf der Vergaserseite der Absperrvorrichtung befindliche Treibstoffmenge verbraucht ist. Soll der Motor sofort stillgesetzt werden, wird die Bewegung des Stellorgans weiter in der gleichen Richtung fortgesetzt, bis die Stoppstellung erreicht wird, wo nach einer bevorzugten Ausgestaltung in der Bewegungsbahn des Stellorgans ein durch dieses betätigbarer Kurzschlußknopf angeordnet ist. Die gleiche Wirkung wird erzielt, wenn nach einer anderen Variante statt eines Kurzschlußknopfs ein Schalter zum Abschalten der Unterbrecherleitung vorgesehen ist. Da für den Motorstart das Stellorgan aus der Stoppstellung wieder in eine dem Motorbetrieb zugeordnete Stellung überführt werden muß, wird damit zugleich der Kurzschluß aufgehoben bzw. die Unterbrecherleitung wieder zugeschaltet, die Absperrvorrichtung wird wieder geöffnet und die Leitungsverbindung zwischen dem Treibstofftank und dem Vergaser wiederhergestellt.With this construction, the operator must control the motor operate only a single actuator, the individual Switch positions of the actuator a logical order exhibit. With a short break in work, this can Actuator moved from full throttle to idle and by an opposite movement of the actuator the engine power can be increased again at any time. Should the motor is stopped, the movement of the actuator from full throttle to idle in continued in the same direction, i.e. the idle position will leave towards the stop position. This movement first leads to a position in which the shut-off device transferred to the closed position in the fuel line will cause the engine to stop when the located on the carburetor side of the shut-off device Amount of fuel is consumed. The engine should stop immediately the movement of the actuator will continue continue in the same direction until the stop position is reached is where, according to a preferred embodiment in the Movement path of the actuator can be actuated by this Short circuit button is arranged. The same effect will achieved if according to another variant instead of a short-circuit button a switch to turn off the breaker line is provided. Since the actuator for starting the engine the stop position back into one assigned to engine operation Position must be transferred, the short circuit becomes at the same time canceled or the interrupter line switched on again, the shut-off device is opened again and the Line connection between the fuel tank and the carburetor restored.
Eine vorteilhafte Ausgestaltung besteht bei einer Gasbetätigungsvorrichtung mit einem in der Leitungsverbindung zwischen Treibstofftank und Vergaser angeordneten, mechanisch betätigbaren Absperrventil darin, daß eine zur Betätigung des Absperrventils geeignete mechanische Stellverbindung zwischen dem Stellorgan und dem Absperrventil ein erstes, mit dem Absperrventil verbundenes Stellglied umfaßt, das über eine Steuerkurve mit einem zweiten, zum Stellorgan gehörenden Stellglied verstellbar verbunden ist, wobei nach einer vorteilhaften Weiterbildung das erste Stellglied in seine der Öffnungsstellung des Absperrventils zugeordnete Stellung vorgespannt ist und unter der Wirkung dieser Vorspannung derart in die Bahn des zweiten Stellglieds ragt, daß es von diesem zweiten Stellglied gegen die Wirkung der Vorspannung in seine der Sperrstellung des Absperrventils zugeordnete Stellung gedrückt wird, solange sich das Stellorgan in einem auf die Leerlaufstellung folgenden und bis zur Stoppstellung, diese einschließend, führenden, sperrenden Bahnabschnitt befindet.An advantageous embodiment consists of a gas actuation device with one in the line connection between Fuel tank and carburetor arranged, mechanically operated Shut-off valve in that one for actuating the shut-off valve suitable mechanical setting connection between the actuator and the shut-off valve a first, with the shut-off valve connected actuator includes a Control cam with a second, belonging to the actuator Actuator is adjustably connected, according to an advantageous Training the first actuator in its the Biased opening position of the shut-off valve assigned position is and under the effect of this bias protrudes into the path of the second actuator that it is from this second actuator against the effect of the bias in its position assigned to the blocking position of the shut-off valve is pressed as long as the actuator in one on the Idle position following and up to the stop position, this including, leading, blocking web section.
Nach einer zweckmäßigen ersten Variante umfaßt das Stellorgan einen Schwenkhebel, der einen Steuernocken aufweist, an dem das erste Stellglied unter Wirkung der Vorspannung in einer in Bezug auf die Stellhebelachse etwa radialen Richtung anliegt.According to an expedient first variant, the actuator comprises a pivot lever, which has a control cam on which the first actuator under the effect of the bias in one is approximately radial direction with respect to the actuating lever axis.
Eine andere Variante besteht darin, daß das erste Stellglied unter der Wirkung der Vorspannung an einem seine Bewegung begrenzenden Anschlag anliegt und daß das zweite Stellglied dem ersten Stellglied derart zugeordnet ist, daß eine Wirkverbindung zwischen beiden Stellgliedern besteht, solang sich das Stellorgan in seinem sperrenden Bahnabschnitt befindet.Another variant is that the first actuator under the effect of the bias on one its movement limiting stop is present and that the second actuator is assigned to the first actuator such that an operative connection as long as there is between the two actuators the actuator is located in its blocking path section.
Die DD 80589 zeigt und beschreibt eine Kraftstoff schaltvorrichtung für Vergaser von Brennkraftmaschinen, die bei einem solchen Vergaser die Leerlaufeinrichtung nach Ausschalten der Zündung bzw. im Schubbetrieb abschaltet, wobei die Abschaltung mittels eines Elektromagnetventils erfolgt.DD 80589 shows and describes a fuel switching device for carburetors of internal combustion engines, which at one such carburetor the idle device after turning off the Switching off the ignition or in overrun mode, the shutdown by means of an electromagnetic valve.
Aus der US-PS 2,619,185 ist es bekannt, in die Kraftstoffleitung eines Kraftfahrzeugs eine Einrichtung einzufügen, die den Kraftfluß durch die Leitung abhängig von der Lage des Kraftfahrzeugs unterbricht, wenn dieses z.B. bei einem Unfall umgestoßen wird oder sich überschlägt.From US-PS 2,619,185 it is known in the fuel line of a motor vehicle to insert a device that the power flow through the line depending on the location of the Motor vehicle interrupts if this e.g. in an accident is knocked over or overturns.
Anhand eines in der Zeichnung dargestellten Ausführungsbeispiels der Erfindung wird diese näher dargestellt.Based on an embodiment shown in the drawing the invention is shown in more detail.
Es zeigt:
- Fig. 1
- eine die Gasbetätigungsvorrichtung des Antriebsmotors zeigende, seitliche Detailansicht eines Bo denverdichtungsgeräts,
- Fig. 2
- eine Detailansicht des Antriebsmotors mit dem Vergaser und der Startvorrichtung,
- Fig. 3
- eine teilweise nach der Linie III-III in Fig. 1 geschnittene Ansicht und
- Fig. 4
- eine Detailansicht ähnlich Fig. 1, teilweise geschnitten nach der Linie IV-IV in Fig. 3.
- Fig. 1
- a detailed side view of the soil compression device showing the gas actuation device of the drive motor,
- Fig. 2
- a detailed view of the drive motor with the carburetor and the starting device,
- Fig. 3
- a partially cut along the line III-III in Fig. 1 and
- Fig. 4
- 2 shows a detailed view similar to FIG. 1, partially cut along the line IV-IV in FIG. 3.
Ein Bodenverdichtungsgerät 10, das nur durch ein rohrförmiges
Teilstück seines Rahmens dargestellt ist, wird durch einen
Verbrennungsmotor für Vergaserkraftstoff betrieben, von dem
in Fig. 2 ein Teil des Vergasers 12 zu sehen ist, dessen
Drosselklappe durch einen Hebel 14 betätigbar ist. Am Hebel
14 greift ein Bowdenzug 16 an, dessen anderes Ende mit einem
um eine Achse 20 (Fig. 1) verschwenkbaren Stellhebel 22 verbunden
ist und mit diesem zusammen ein Stellorgan 18 zur
Steuerung des Motors bildet. In Fig. 1 befindet sich dieser
mit einem Handgriff 24 (Fig.3) versehene Stellhebel 22 in
seiner einen Endstellung, der Vollaststellung D, aus der er
in Fig. 1 entgegen dem Uhrzeigersinn aufeinanderfolgend in
eine Leerlaufstellung C, eine das Schließen der Kraftstoffleitung
veranlassende Stellung B und seine andere Endstellung
A bewegbar ist, wobei in dieser Stellung A der Motor sofort
stillgesetzt wird, indem entweder die Zündung kurzgeschlossen
oder der Unterbrecherkreis abgeschaltet wird. Die Stellbewegung
des Stellhebels 22 wird durch den Bowdenzug 16, dessen
Verlauf zwischen dem Stellhebel 22 und dem Hebel 14 der Drosselklappe
durch eine die Fig. 1 und 2 verbindende strichpunktierte
Linie symbolisch dargestellt ist, auf diesen Hebel 14
übertragen.A
Der Hebel 14 ist mit einem Exzenternocken 26 versehen, der
beim Erreichen der Stoppstellung einen Kurzschlußknopf 28
betätigt und dadurch den Motor sofort stillsetzt. The
In Fig. 2 bezeichnet 29 die Startvorrichtung für den Motor.In Fig. 2, 29 denotes the starting device for the engine.
Von einem Kraftstofftank 30 (Fig. 3) führt eine Kraftstoffleitung
32 zu einem Absperrventil 34 und von dessen Ausgang
36 weiter zum Vergaser 12. Das Absperrventil 34 enthält einen
durch eine Feder 39 in die Öffnungsstellung vorgespannten
Ventilschieber 40, der aus dem Ventilgehäuse 42 in einer in
Bezug auf die Achse 20 radialen Richtung herausragt und dem
am Stellhebel 22 eine Steuerkurve 44 zugeordnet ist. Diese
Steuerkurve 44 weist eine nockenartige Erhebung 46 auf, die
geeignet ist, den Ventilschieber 40 entgegen der Wirkung der
Ventilfeder 39 in seine Sperrstellung zu drücken, wenn der
Stellhebel 24 ausgehend von der Stellung C die Stellung B
erreicht. In der Sperrstellung des Ventilschiebers 40 ist die
Versorgung des Vergasers 12 aus dem Kraftstofftank 30 vollständig
unterbrochen.A fuel line leads from a fuel tank 30 (FIG. 3)
32 to a shut-off
Claims (7)
- Gas operating device for internal combustion engines which are to be mounted on ground compacting machines (10) and comprising a membrane carburettor (12) and a connection (32), which can be shut-off, between a fuel tank (30) and the carburettor (12) and further comprising an adjusting member (18) which to change the carburettor setting can be moved optionally into several switching positions, from full load (D) via idle running (C) into a switched position (A) which stops the engine, and back again, characterised in that a shut-off position (B) is disposed in the movement path of the adjusting member (18) between the idle running position (C) and the stop position (A) and is designed in such a manner that upon passing the shut-off position (B) from the idle running position (C) to the stop position (A) the line connection (32) between the fuel tank (30) and the carburettor (12) is interrupted and this line connection (32) is opened again upon passing the shut-off position in the opposite direction.
- Device according to claim 1 comprising a mechanically actuated shut-off valve (34) which is disposed in the line connection (32) between the fuel tank (30) and the carburettor (12), characterised in that a mechanical adjusting connection which is suitable for actuating the shut-off valve (34) and is disposed between the adjusting member (18) and the shut-off valve (34) comprises a first adjusting element (40) which is connected to the shut-off valve (34) and is connected in an adjustable manner by way of a control curve (44) to a second adjusting element (22) which is part of the adjusting member (18).
- Device according to claim 2, characterised in that the first adjusting element (40) is biassed in its position allocated to the open position of the shut-off valve (34) and protrudes under the influence of this biassing arrangement (39) into the path of the second adjusting element (22) in such a manner that it is urged by this second adjusting element (22) against the effect of the biassing arrangement (39) into its position allocated to the shut-off position of the shut-off valve (34), for as long as the adjusting member (18) is located in a shut-off section of the path following the idle running position (C) and leading up to and including the stop position (A).
- Device according to claim 3, characterised in that the adjusting member (18) encompasses a pivot lever (22) which comprises a control cam (46) on which the first adjusting element (40) lies under the influence of the biassing arrangement (39) in an approximate radial direction with respect to the adjusting lever axis (20)
- Device according to claim 3, characterised in that the first adjusting element (40) lies under the influence of the biassing arrangement (39) against a stop which defines its movement and that the second adjusting element (22) is allocated to the first adjusting element (40) in such a manner that an operative connection between two adjusting elements (22, 40) is formed for as long as the second adjusting element (22) is located in its shut-off path section.
- Device according to any one of the preceding claims, characterised in that in the stop position (A) a short-circuit button (28) is disposed in the movement path of the adjusting member (18) and can be actuated by the said adjusting member.
- Device according to any one of claims 1 to 5, characterised in that in the stop position a switch is disposed in the movement path of the adjusting member and interrupts the contact break line for as long as the adjusting member is located in the stop position.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19549113A DE19549113C1 (en) | 1995-12-29 | 1995-12-29 | Gas actuation device for internal combustion engines with membrane carburettors intended for attachment to soil compaction equipment |
| DE19549113 | 1995-12-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0781910A1 EP0781910A1 (en) | 1997-07-02 |
| EP0781910B1 true EP0781910B1 (en) | 2000-06-07 |
Family
ID=7781627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96120893A Expired - Lifetime EP0781910B1 (en) | 1995-12-29 | 1996-12-27 | Gas operating device for mounting on soil densification machine used in internal combustion engines with membrane carburettor |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5720250A (en) |
| EP (1) | EP0781910B1 (en) |
| JP (1) | JP3977469B2 (en) |
| DE (2) | DE19549113C1 (en) |
| ES (1) | ES2147890T3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015115654A1 (en) | 2015-09-17 | 2017-03-23 | Meflex Telecontrol Gmbh & Co. Kg | Encoder for the mixture adjustment of an internal combustion engine |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6857410B2 (en) * | 2002-08-12 | 2005-02-22 | Tecumseh Products Co | Engine control system |
| US7165536B2 (en) * | 2004-06-14 | 2007-01-23 | Tecumseh Products Company | Evaporative emissions control system for small internal combustion engines |
| SE528874C2 (en) * | 2005-07-06 | 2007-03-06 | Dynapac Compaction Equip Ab | Operating device |
| JP2007278239A (en) | 2006-04-11 | 2007-10-25 | Mikasa Sangyo Co Ltd | Throttle adjusting device for vibration compacting machine |
| US8408183B2 (en) * | 2008-04-22 | 2013-04-02 | Briggs & Stratton Corporation | Ignition and fuel shutoff for engine |
| JP5344760B2 (en) * | 2009-10-28 | 2013-11-20 | 株式会社日立建機カミーノ | Small compacting machine |
| DE102010005597A1 (en) * | 2010-01-25 | 2011-07-28 | BOMAG GmbH, 56154 | Soil compacting device with removable fuel line |
| DE102010013618A1 (en) | 2010-04-01 | 2011-10-06 | Bomag Gmbh | Gas actuation device for a soil compacting device and soil compaction device with such a gas actuation device |
| DE102010014898A1 (en) | 2010-04-14 | 2011-10-20 | Bomag Gmbh | Tank stop valve for alternate interruption and release of fuel connection between fuel tank and combustion engine of soil compaction device, has piston that is supported by valve housing in axially movable manner |
| DE102011100155A1 (en) * | 2011-05-02 | 2012-11-08 | Bomag Gmbh | Actuating device for a soil compacting device with an internal combustion engine, soil compacting device with such an actuating device and actuating means |
| US11326566B2 (en) | 2017-03-02 | 2022-05-10 | Briggs & Stratton, Llc | Transport valve system for outdoor power equipment |
| EP3369920B1 (en) * | 2017-03-02 | 2021-09-22 | Briggs & Stratton Corporation | Transport valve system for outdoor power equipment |
| US11111861B2 (en) | 2017-03-03 | 2021-09-07 | Briggs & Stratton, Llc | Engine speed control system |
| DE102021110788A1 (en) | 2021-04-27 | 2022-10-27 | Wacker Neuson Produktion GmbH & Co. KG | Fuel supply device for an internal combustion engine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD80589A (en) * | ||||
| FR463396A (en) * | 1913-10-08 | 1914-02-20 | Edouard Godot | Device for automatically interrupting the supply of air and fuel to internal combustion and combustion engines or the supply of steam to steam engines |
| DE674170C (en) * | 1935-08-24 | 1939-04-06 | Zenith Carburateurs Soc Gen | Device for carburetors for internal combustion engines with bent skin fuel pressure regulator |
| US2619185A (en) * | 1950-07-27 | 1952-11-25 | Dorus P Rudisill | Safety fuel cutoff for vehicles |
| DE3737667A1 (en) * | 1987-11-06 | 1989-05-18 | Stihl Maschf Andreas | Carburettor for internal combustion engines |
-
1995
- 1995-12-29 DE DE19549113A patent/DE19549113C1/en not_active Expired - Fee Related
-
1996
- 1996-12-24 US US08/782,556 patent/US5720250A/en not_active Expired - Lifetime
- 1996-12-27 ES ES96120893T patent/ES2147890T3/en not_active Expired - Lifetime
- 1996-12-27 JP JP35154696A patent/JP3977469B2/en not_active Expired - Fee Related
- 1996-12-27 EP EP96120893A patent/EP0781910B1/en not_active Expired - Lifetime
- 1996-12-27 DE DE59605395T patent/DE59605395D1/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015115654A1 (en) | 2015-09-17 | 2017-03-23 | Meflex Telecontrol Gmbh & Co. Kg | Encoder for the mixture adjustment of an internal combustion engine |
| DE102015115654B4 (en) | 2015-09-17 | 2018-10-31 | Meflex Telecontrol Gmbh & Co. Kg | Encoder for the mixture adjustment of an internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| DE59605395D1 (en) | 2000-07-13 |
| US5720250A (en) | 1998-02-24 |
| DE19549113C1 (en) | 1997-07-31 |
| JPH09195855A (en) | 1997-07-29 |
| ES2147890T3 (en) | 2000-10-01 |
| JP3977469B2 (en) | 2007-09-19 |
| EP0781910A1 (en) | 1997-07-02 |
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