EP0103064A2 - Device for the spark-free removal of combustion gases - Google Patents

Device for the spark-free removal of combustion gases Download PDF

Info

Publication number
EP0103064A2
EP0103064A2 EP83104378A EP83104378A EP0103064A2 EP 0103064 A2 EP0103064 A2 EP 0103064A2 EP 83104378 A EP83104378 A EP 83104378A EP 83104378 A EP83104378 A EP 83104378A EP 0103064 A2 EP0103064 A2 EP 0103064A2
Authority
EP
European Patent Office
Prior art keywords
bore
safety valve
piston
housing
cylinder
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Withdrawn
Application number
EP83104378A
Other languages
German (de)
French (fr)
Other versions
EP0103064A3 (en
Inventor
Hans Cramer
Hugo Göbel
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz AG
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
Application filed by Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Publication of EP0103064A2 publication Critical patent/EP0103064A2/en
Publication of EP0103064A3 publication Critical patent/EP0103064A3/en
Withdrawn legal-status Critical Current

Links

Images

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
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/08—Safety, indicating, or supervising devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/24—Safety means or accessories, not provided for in preceding sub- groups of this group
    • 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
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder

Definitions

  • the invention relates to an arrangement for spark-free discharge of combustion gases according to the preamble of claim 1 and a safety valve suitable for this according to the preamble of claims 2 and 5.
  • the classification societies require safety valves for each cylinder, which open when the ignition pressure is excessive, so that the cylinder interior is connected to the environment. This prevents the motors from being endangered.
  • the object of the present invention is to improve an arrangement of the type mentioned at the outset in such a way that the pipe and collecting lines and the sheath via the safety valve are no longer necessary.
  • this object is achieved by the characterizing features of the first claim.
  • This achieves the advantage that the combustion gases, which are discharged via the safety valve if the ignition pressures are too high, are passed directly into the exhaust port for each cylinder within the cylinder head. Additional components outside the cylinder head are completely eliminated. It is therefore only necessary to provide a bypass line in the cylinder head from the combustion chamber leading to the exhaust port and bypassing the exhaust valve, in which the safety valve is installed.
  • a safety valve suitable for the arrangement described above is described in claims 2 to 8.
  • this safety valve also solves the task of reliably sealing the outlet channel. This prevents exhaust gases from flowing into the combustion chamber via the safety valve.
  • the advantage of the solution according to the characterizing features of claim 2 is that by the application the exhaust gases onto the lateral surfaces of the frustoconical piston, the pressure forces acting on the piston in the opening direction are nominated from the exhaust gas pressure. Since there is usually no more than 2 bar overpressure in the outlet duct, it is ensured in every operating state that the safety valve does not open solely because of the exhaust gas pressure.
  • the structure of the safety valve according to the characterizing features of claim 5 has the advantage that there is a separate closing member for each of the two media to be closed, so that their function can be optimized.
  • the assignment according to claim 6 is preferred. Here it is taken into account that the pressure in the exhaust gas can open the assigned slide at a level that is unusual in operation, but is not able to open the piston due to the stop. This ensures that exhaust gas cannot flow into the combustion chamber in any operating state. Conversely, the stopper is opened by the opening piston after a predetermined distance covered, so that combustion gases can flow into the outlet channel when the ignition pressure is too high.
  • this design of the safety valve ensures that a pulsation of the combustion pressure just below the permissible maximum limit does not lead to the safety valve opening, because the piston has to travel a fixed distance before the valve opens. This means that the opening pressure on the valve can be set very precisely.
  • FIG. 1 shows a cylinder head of a reciprocating piston internal combustion engine 2, which closes a cylinder 3.
  • the cylinder head 1 has an exhaust valve 6, which closes an exhaust port 7 (in FIG. 1).
  • a bore 8 is provided in the cylinder head 1, which leads from the cylinder interior 5 to a safety valve 9 and a further bore 10 which leads from the safety valve 9 to the exhaust port 7.
  • the safety valve 9 consists essentially of a valve housing 11, a closure part 12 and a compression spring 13 which holds the closure part in the closed position. The spring tension and thus the opening pressure of the safety valve 9 can be adjusted via a nut 14.
  • the closure part 12 is designed as a truncated cone-shaped piston 15, which closes the part of the bore 8 extending in the valve housing 11 to the combustion chamber 5.
  • the piston 15 On its outer surfaces 16, the piston 15 has a circumferential annular groove 17 which, in the closed state, is aligned with the part of the bore 10 (housing bore 10.1) running in the valve housing to the outlet channel 7. Furthermore, an annular groove 18 is provided on the end face of the safety valve 9 screwed into the cylinder head 1 to ensure that the part of the bore 10 running in the valve housing 11 is aligned with the part of the bore 10 running in the cylinder head in every installation position.
  • FIG. 2 An alternative of the safety valve 9 according to FIG. 1 is shown in FIG. 2.
  • the same components are provided with the same reference numbers. It differs from that shown in FIG. 1 in that no annular groove is provided in the piston 15. It is either missing entirely (right half of Fig. 2) or is from the piston 15 in the Valve housing 11 has been moved (annular groove 17 '). Also - as in F ig. 2 not shown - the part of the bore 10 running in the valve housing has a plurality of branches which run from the lateral surface 16 of the piston 15 - possibly from the finger groove 17 1 - to the annular groove 18. As a result, an enlarged flow cross section is available in the safety valve.
  • Fig. 3 shows a further possibility to build a safety valve for the arrangement according to the invention.
  • identical components are provided with the reference numerals used in FIG. 1.
  • the safety valve 9 shown in FIG. 3 has a closure part 12 which consists of a piston 19 and a slide 20 concentrically surrounding the piston 19.
  • the piston 19 in turn closes the bore 8 coming from the combustion chamber 5, while the slide 20, which essentially has the shape of a circular cylinder, closes with its end face 21 the parts of the bore 10 extending in the valve housing 11.
  • the slide 20 is held in the closed position by a spring 22 which is dimensioned such that the slide 20 remains closed at least at the usual pressures in the outlet channel 7.
  • an annular groove 23 is also embedded in the end face 21 of the slide 20.
  • the slide 20 To open the slide 20, it has a travel-dependent stop 24, via which the slide is carried by the lifting piston 19. This ensures that when the piston 19 is fully open due to excessive ignition pressure in the combustion chamber 5 also the slide 20 is open so that the combustion gases can flow through the bore 8 to the bore 10 and further into the outlet channel, in order to reduce the ignition pressure which is too high.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The devices (protective sheathes, separate pipelines) for the spark-free removal of combustion gases by means of safety valves in the case of elevated ignition pressure as previously used in large engines are avoided by feeding the released combustion gases directly to the discharge channel via a bore in the cylinder head. The safety valves used for this are designed in such a way that the pressure of the exhaust gases cannot lead to the safety valve opening so that there is no risk of the safety valve opening unintentionally (Fig. 1). This is achieved either by a separate closing element for the bore leading to the discharge channel or by conical closing elements, the outer surfaces of which close the bores leading to the exhaust gas channel. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Anordnung zum funkenfreien Ableiten von Verbrennungsgasen nach dem Oberbegriff des Anspruchs 1 sowie auf ein hierfür geeignetes Sicherheitsventil nach dem Oberbegriff des Anspruchs 2 bzw. 5.5. The invention relates to an arrangement for spark-free discharge of combustion gases according to the preamble of claim 1 and a safety valve suitable for this according to the preamble of claims 2 and 5.

Für Großmotoren über 220 mm Kolbendurchmesser werden von den Klassifikationsgesellschaften Sicherheitsventile für jeden Zylinder verlangt, die bei überhöhten Zünddrücken öffnen, so daß der Zylinderinnenraum mit der Umgebung verbunden wird. Dadurch wird eine Gefährdung der Motoren verhindert.For large engines with a piston diameter of more than 220 mm, the classification societies require safety valves for each cylinder, which open when the ignition pressure is excessive, so that the cylinder interior is connected to the environment. This prevents the motors from being endangered.

Für Motoren, die in explosionsgefährdeter Umgebung betrieben werden, ist jedoch ein öffnen der Sicherheitsventile in die Umgebung nicht möglich. Hier muß für eine funkenfreie Ableitung der beim Öffnen der Sicherheitsventil austretenden Verbrennungsgase gesorgt werden. Bisher hat man dieses Problem dadurch gelöst, daß die Sicherheitsventile durch eine Art Hülle abgeschirmt werden, wobei die Hülle mit einer Rohrleitung verbunden ist, die in eine Motorsammelleitung führt. Nachteilig bei dieser Ausführung ist, daß durch die Hülle, Rohr- und Sammelleitungen die Zugänglichkeit zu wichtigen Wartungsteilen erheblich behindert wird.However, it is not possible to open the safety valves into the environment for motors that are operated in a potentially explosive atmosphere. Here, spark-free discharge of the combustion gases escaping when the safety valve is opened must be ensured. So far, this problem has been solved in that the safety valves are shielded by a kind of sheath, the sheath being connected to a pipeline that leads into an engine manifold. A disadvantage of this design is that the accessibility to important maintenance parts is considerably impeded by the casing, pipes and manifolds.

Aufgabe der vorliegenden Erfindung ist es, eine Anordnung der eingangs genannten Gattung dahingehend zu verbessern, daß die Rohr- und Sammelleitungen sowie die Hülle über das Sicherheitsventil nicht mehr notwendig sind.The object of the present invention is to improve an arrangement of the type mentioned at the outset in such a way that the pipe and collecting lines and the sheath via the safety valve are no longer necessary.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des ersten Anspruchs gelöst. Hierdurch wird der Vorteil erreicht, daß die bei zu hohen Zünddrücken über das Sicherheitsventil abgesteuerten Verbrennungsgase innerhalb des Zylinderkopfes direkt in den für jeden Zylinder vorhandenen Auslaßkanal geleitet werden. Zusätzliche Bauteile außerhalb des Zylinderkopfes entfallen vollständig. Es ist also nur notwendig, innerhalb des Zylinderkopfes vom Verbrennungsraum eine zum Auslaßkanal führende, das Ausläßventil umgehende Bypaß-Leitung vorzusehen, in die das Sicherheitsventil eingebaut ist.According to the invention, this object is achieved by the characterizing features of the first claim. This achieves the advantage that the combustion gases, which are discharged via the safety valve if the ignition pressures are too high, are passed directly into the exhaust port for each cylinder within the cylinder head. Additional components outside the cylinder head are completely eliminated. It is therefore only necessary to provide a bypass line in the cylinder head from the combustion chamber leading to the exhaust port and bypassing the exhaust valve, in which the safety valve is installed.

Eine für die oben beschriebene Anordnung geeignetes Sicherheitsventil beschreiben die Ansprüche 2 bis 8. Dieses Sicherheitsventile lösen neben der bekannten Aufgabe, als Überdruckventil zu arbeiten weiterhin die Aufgabe, den Auslaßkanal sicher abzudichten. Damit wird verhindert, daß Abgase über das Sicherheitsventil in den Verbrennungsraum strömen können.A safety valve suitable for the arrangement described above is described in claims 2 to 8. In addition to the known task of working as a pressure relief valve, this safety valve also solves the task of reliably sealing the outlet channel. This prevents exhaust gases from flowing into the combustion chamber via the safety valve.

Diese letzte Aufgabe wird durch die kennzeichnenden Merkmale der Ansprüche 2 bzw. 5 gelöst, die beide für diese Aufgabenteile eine mögliche Lösung darstellen.This last object is achieved by the characterizing features of claims 2 and 5, both of which represent a possible solution for these parts of the task.

Der Vorteil der Lösung nach den kennzeichnenden Merkmalen des Anspruchs 2 liegt darin, daß durch die Beaufschlagung der Abgase auf die Mantelflächen des kegelstumpfförmigen Kolbens die auf den Kolben im öffnungssinne wirkenden Druckkräfte aus dem Abgasdruck nominiert werden. Da im Auslaßkanal meist nicht mehr als 2 bar Überdruck herrschen, ist in jedem Betriebszustand sichergestellt, daß ein öffnen des Sicherheitsventils allein aufgrund des Abgasdruckes nicht eintritt.The advantage of the solution according to the characterizing features of claim 2 is that by the application the exhaust gases onto the lateral surfaces of the frustoconical piston, the pressure forces acting on the piston in the opening direction are nominated from the exhaust gas pressure. Since there is usually no more than 2 bar overpressure in the outlet duct, it is ensured in every operating state that the safety valve does not open solely because of the exhaust gas pressure.

Die Weiterbildung der Lösung nach Anspruch 2 durch die kennzeichnenden Merkmale des Anspruchs 3 hat den Vorteil, das der Kolben gleichmäßig von Abgasdruck beaufschlagt wird; gleiches wird durch die alternative Lösung nach Anspruch 4 erzielt.The development of the solution according to claim 2 by the characterizing features of claim 3 has the advantage that the piston is evenly acted upon by exhaust gas pressure; the same is achieved by the alternative solution according to claim 4.

Der Aufbau des Sicherheitsventils nach den kennzeichnenden Merkmalen des Anspruchs 5 hat den Vorteil, daß für die beiden zu schließenden Medien je ein getrenntes Schließglied vorhanden ist, so daß deren Funktion optimiert werden kann. Bevorzugt wird die Zuordnung nach Anspruch 6. Hierbei ist berücksichtigt, daß der Druck im Abgas bei einer betriebsunüblichen Höhe zwar den zugeordneten Schieber öffnen kann, jedoch aufgrund des Anschlages nicht in der Lage ist, den Kolben zu öffnen. Dadurch ist sichergestellt, daß in keinem Betriebszustand Abgas in den Verbrennungsraum strömen kann. Umgekehrt wird über den Anschlag von dem sich öffnenden Kolben nach einem vorgegebenen zurückgelegten Weg der Schieber geöffnet, so daß bei überhöhtem Zünddruck Verbrennungsgase in den Auslaßkanal strömen können. Weiterhin gewährleistet diese Ausbildung des Sicherheitsventils, daß ein Pulsieren des Verbrennungsdruckes kurz unterhalb der zulässigen Höchstgrenze nicht zu einem öffnen des Sicherheitsventil führt, da der Kolben erst einen festgelegten Weg zurücklegen muß, bevor das Ventil öffnet. Dadurch kann der öffnungsdruck am Ventil sehr genau eingestellt werden.The structure of the safety valve according to the characterizing features of claim 5 has the advantage that there is a separate closing member for each of the two media to be closed, so that their function can be optimized. The assignment according to claim 6 is preferred. Here it is taken into account that the pressure in the exhaust gas can open the assigned slide at a level that is unusual in operation, but is not able to open the piston due to the stop. This ensures that exhaust gas cannot flow into the combustion chamber in any operating state. Conversely, the stopper is opened by the opening piston after a predetermined distance covered, so that combustion gases can flow into the outlet channel when the ignition pressure is too high. Furthermore, this design of the safety valve ensures that a pulsation of the combustion pressure just below the permissible maximum limit does not lead to the safety valve opening, because the piston has to travel a fixed distance before the valve opens. This means that the opening pressure on the valve can be set very precisely.

Zur gleichmäßigen Verteilung des Abgasdruckes auf den Schieber wird die Weiterbildung nach Anspruch 7 vorgeschlagen.For the uniform distribution of the exhaust gas pressure on the slide, the development according to claim 7 is proposed.

Um bei beiden Ausführungsformen des Sicherheitsventils zu gewährleisten, daß je nach seinem Einbauzustand immer die Bohrung zum Auslaßkanal mit der Gehäusebohrung korrespondiert und daß keine Strömungsengpässe vorhanden sind, wird die Weiterbildung nach Anspruch 8 vorgeschlagen.In order to ensure in both embodiments of the safety valve that, depending on its installed state, the bore to the outlet duct always corresponds to the housing bore and that there are no flow bottlenecks, the development according to claim 8 is proposed.

Im folgenden wird die Erfindung an Hand eines Ausführungsbeispiels näher erläutert.The invention is explained in more detail below with the aid of an exemplary embodiment.

Es stellen dar:

  • Fig. 1 einen schematischen Querschnitt durch eine Kolben-Zylinder-Zylinderkopfeinheit einer Hubkolbenbrennkraftmaschine;
  • Fig. 2, 3 Ausführungsbeispiele geeigneter Sicherheitsventile.
They represent:
  • 1 shows a schematic cross section through a piston-cylinder-cylinder head unit of a reciprocating piston internal combustion engine;
  • Fig. 2, 3 embodiments of suitable safety valves.

In Fig. 1 ist mit 1 ein Zylinderkopf einer Hubkolbenbrennkraftmaschine 2 dargestellt, welcher einen Zylinder 3 abschließt. In dem Zylinder 3 arbeitet ein Kolben 4, der einen Zylinderinnenraum 5 begrenzt. Weiterhin weist der Zylinderkopf 1 ein Auslaßventil 6 auf, welches einen Auslaßkanal 7 (in Fig. l) verschießt.1 shows a cylinder head of a reciprocating piston internal combustion engine 2, which closes a cylinder 3. A piston 4, which delimits a cylinder interior 5, works in the cylinder 3. Furthermore, the cylinder head 1 has an exhaust valve 6, which closes an exhaust port 7 (in FIG. 1).

Seitlich neben dem Auslaßventil 6 ist im Zylinderkopf 1 eine Bohrung 8 vorgesehen, die von dem Zylinderinnenraum 5 zu einem Sicherheitsventil 9 und eine weitere Bohrung 10, die vom Sicherheitsventil 9 zum Auslaßkanal 7 führt. Das Sicherheitsventil 9 besteht im wesentlichen aus einem Ventilgehäuse 11, einem Verschlußteil 12 und einer Druckfeder 13, die das Verschlußteil in Schließstellung hält. Die Federspannung und damit der öffnungsdruck des Sicherheitsventils 9 ist über eine Mutter 14 einstellbar. Das Verschlußteil 12 ist als kegelstumpfförmiger Kolben 15 ausgebildet, der den im Ventilgehäuse 11 verlaufenden Teil der Bohrung 8 zum Verbrennungsraum 5 verschließt. Auf seinen Mantelflächen 16 weist der Kolben 15 eine umlaufende Ringnut 17 auf, die im geschlossenen Zustand mit dem im Ventilgehäuse verlaufenden Teil der Bohrung 10 (Gehäusebohrung 10.1) zum Auslaßkanal 7 fluchtet. Weiterhin ist auf der im Zylinderkopf 1 eingeschraubten Stirnseite des Sicherheitsventils 9 eine Ringnut 18 vorgesehen, um sicherzustellen, daß der im Ventilgehäuse 11 verlaufende Teil der Bohrung 10 in jeder Einbaulage mit dem im Zylinderkopf verlaufenden Teil der Bohrung 10 fluchtet.Laterally next to the exhaust valve 6, a bore 8 is provided in the cylinder head 1, which leads from the cylinder interior 5 to a safety valve 9 and a further bore 10 which leads from the safety valve 9 to the exhaust port 7. The safety valve 9 consists essentially of a valve housing 11, a closure part 12 and a compression spring 13 which holds the closure part in the closed position. The spring tension and thus the opening pressure of the safety valve 9 can be adjusted via a nut 14. The closure part 12 is designed as a truncated cone-shaped piston 15, which closes the part of the bore 8 extending in the valve housing 11 to the combustion chamber 5. On its outer surfaces 16, the piston 15 has a circumferential annular groove 17 which, in the closed state, is aligned with the part of the bore 10 (housing bore 10.1) running in the valve housing to the outlet channel 7. Furthermore, an annular groove 18 is provided on the end face of the safety valve 9 screwed into the cylinder head 1 to ensure that the part of the bore 10 running in the valve housing 11 is aligned with the part of the bore 10 running in the cylinder head in every installation position.

In Fig. 1 stellt die untere Lage des Kolbens 15 seine geschlossene, die obere - an seiner Mittelachse geteilt - die geöffnete Stellung dar.In Fig. 1, the lower position of the piston 15 is its closed, the upper - divided on its central axis - the open position.

In Fig. 2 ist eine Alternative des Sicherheitsventils 9 nach Fig. 1 dargestellt. Gleiche Bauteile sind mit gleichen Bezugsziffern versehen. Es unterscheidet sich von dem in Fig. 1 dargestellten dadurch, daß in dem Kolben 15 keine Ringnut vorgesehen ist. Sie fehlt entweder ganz (rechte Hälfte der Fig. 2) oder ist vom Kolben 15 in das Ventilgehäuse 11 verlegt worden (Ringnut 17'). Auch kann - wie in Fig. 2 nicht dargestellt - der im Ventilgehäuse verlaufende Teil der Bohrung 10 mehrere Äste aufweisen, die von der Mantelfläche 16 des Kolbens 15 - evtl. von der Fingnut 171 - zu der Ringnut 18 verlaufen. Hierdurch steht im Sicherheitsventil ein vergrößerte Strömungsquerschnitt zur Verfügung.An alternative of the safety valve 9 according to FIG. 1 is shown in FIG. 2. The same components are provided with the same reference numbers. It differs from that shown in FIG. 1 in that no annular groove is provided in the piston 15. It is either missing entirely (right half of Fig. 2) or is from the piston 15 in the Valve housing 11 has been moved (annular groove 17 '). Also - as in F ig. 2 not shown - the part of the bore 10 running in the valve housing has a plurality of branches which run from the lateral surface 16 of the piston 15 - possibly from the finger groove 17 1 - to the annular groove 18. As a result, an enlarged flow cross section is available in the safety valve.

Fig. 3 zeigt eine weitere Möglichkeit, ein Sicherheitsventil für die erfindungsgemäße Anordnung aufzubauen. Auch hier sind wieder gleiche Bauteile mit den in Fig. 1 verwendeten Bezugszeichen versehen. Im Unterschied zu Fig. 1, 2 weist das in Fig. 3 dargestellte Sicherheitsventil 9 ein Verschlußteil 12 auf, welches aus einem Kolben 19 und einem den Kolben 19 konzentrisch umschließenden Schieber 20 besteht.Fig. 3 shows a further possibility to build a safety valve for the arrangement according to the invention. Here too, identical components are provided with the reference numerals used in FIG. 1. In contrast to FIGS. 1, 2, the safety valve 9 shown in FIG. 3 has a closure part 12 which consists of a piston 19 and a slide 20 concentrically surrounding the piston 19.

Der Kolben 19 verschließt wiederum die vom Verbrennungsraum 5 kommende Bohrung 8, während der Schieber 20, der im wesentlichen die Form eines Kreiszylinders aufweist, mit seiner Stirnseite 21 die im Ventilgehäuse 11 verlaufenden Teile der Bohrung 10 verschließt. Zu diesem Zweck wird der Schieber 20 von einer Feder 22 in Schließstellung gehalten, die derart dimensioniert ist, daß zumindest bei den üblichen Drücken im Auslaßkanal 7 der Schieber 20 geschlossen bleibt. Weiterhin ist zu diesem Zweck in die Stirnseite 21 des Schiebers 20 eine Ringnut 23 eingelassen.The piston 19 in turn closes the bore 8 coming from the combustion chamber 5, while the slide 20, which essentially has the shape of a circular cylinder, closes with its end face 21 the parts of the bore 10 extending in the valve housing 11. For this purpose, the slide 20 is held in the closed position by a spring 22 which is dimensioned such that the slide 20 remains closed at least at the usual pressures in the outlet channel 7. For this purpose, an annular groove 23 is also embedded in the end face 21 of the slide 20.

Zum Öffnen des Schiebers 20 weist dieser einen wegabhängigen Anschlag 24 auf, über den der Schieber von dem sich anhebenden Kolben 19 mitgenommen wird. Dadurch ist sichergestellt, daß bei vollständig geöffnetem Kolben.19 aufgrund eines zu hohen Zünddruckes im Verbrennungsraum 5 auch der Schieber 20 geöffnet ist, so daß die Verbrennungsgase über die Bohrung 8 zur Bohrung 10 und weiter in den Auslaßkanal strömen können, um so den zu hohen Zünddruck abzubauen.To open the slide 20, it has a travel-dependent stop 24, via which the slide is carried by the lifting piston 19. This ensures that when the piston 19 is fully open due to excessive ignition pressure in the combustion chamber 5 also the slide 20 is open so that the combustion gases can flow through the bore 8 to the bore 10 and further into the outlet channel, in order to reduce the ignition pressure which is too high.

Claims (8)

1. Anordnung zum funkenfreien Ableiten von Verbrennungsgasen bei Hubkolbenbrennkraftmaschinen, bestehend aus einem im Zylinderkopf (1) eingesetzten Sicherheitsventil (9), welches über eine Bohrung (8) mit dem Zylinderinnenraum (5) verbunden ist,
dadurch gekennzeichnet, daß die Bohrung (8, 10) als Umgehungsleitung zum Auslaßventil (6) vom Zylinderinnenraum (5) zum Auslaßkanal (7) verläuft und von dem Sicherheitsventil (9) gesteuert wird.1. Arrangement for the spark-free discharge of combustion gases in reciprocating piston internal combustion engines, consisting of a safety valve (9) used in the cylinder head (1), which is connected to the cylinder interior (5) via a bore (8),
characterized in that the bore (8, 10) runs as a bypass line to the exhaust valve (6) from the cylinder interior (5) to the exhaust port (7) and is controlled by the safety valve (9). 2. Sicherheitsventil (9) für eine Anordnung nach Anspruch 1, bestehend aus einem Ventilgehäuse (11), in dem ein federbelastetes Verschlußteil (12) beweglich geführt ist, auf dessen der Feder (13) abgewandten Seite über eine Bohrung (8) der Zylinderinnendruck anliegt,
dadurch gekennzeichnet, daß das Verschlußteil (12) als kegelstumpfförmiger Kolben (15) ausgebildet ist, daß von seiner Mantelfläche (16) mindestens eine Gehäusebohrung (10.1) führt, die mit der im Zylinderkopf (1) vorgesehenen Bohrung (10) zum Auslaßkanal (7) zusammenwirkt und daß der Kolben (15) mit seiner Stirnseite die Bohrung (8) vom Zylinderinnenraum (5) verschließt.2. Safety valve (9) for an arrangement according to claim 1, consisting of a valve housing (11) in which a spring-loaded closure part (12) is movably guided, on whose side facing away from the spring (13) via a bore (8) the cylinder internal pressure is present
characterized in that the closure part (12) is designed as a truncated cone-shaped piston (15) that leads from its outer surface (16) at least one housing bore (10.1) which leads to the outlet channel (7 ) cooperates and that the piston (15) closes with its end face the bore (8) from the cylinder interior (5). 3. Sicherheitsventil nach Anspruch 2,
dadurch gekennzeichnet, daß auf der Mantelfläche (16) des Kolbens (15) eine Ringnut (17) eingelassen ist, in die im geschlossenen Zustand des Sicherheitsventils (9) die Gehäusebohrung(en) (10.1) mündet (münden).3. Safety valve according to claim 2,
characterized in that on the outer surface (16) of the piston (15) there is an annular groove (17) into which the housing bore (s) (10.1) opens (open) when the safety valve (9) is closed. 4. Sicherheitsventil nach Anspruch 2,
dadurch gekennzeichnet, daß im Ventilgehäuse (1) im Bereich der Mantelfläche (16) eine Ringnut (17') eingelassen ist, in die die Gehäusebohrung(en) (10.1) mündet (münden).4. Safety valve according to claim 2,
characterized in that in the valve housing (1) in the area of the outer surface (16) an annular groove (17 ') is inserted into which the housing bore (s) (10.1) opens (open). 5. Sicherheitsventil für eine Anordnung nach Anspruch 1, bestehend aus einem Ventilgehäuse, in dem ein federbelastetes Verschlußteil beweglich geführt ist, auf dessen der Feder abgewandten Seite über eine Bohrung der Zylinderinnendruck anliegt,
dadurch gekennzeichnet, daß das Verschlußteil (12) aus einem Kolben (19) und einem diesen koaxial umschließenden, federbelasteten Schieber (20) besteht.5. Safety valve for an arrangement according to claim 1, consisting of a valve housing in which a spring-loaded closure part is movably guided, on whose side facing away from the spring lies the internal cylinder pressure via a bore,
characterized in that the closure part (12) consists of a piston (19) and a spring-loaded slide (20) coaxially enclosing it. 6. Sicherheitsventil nach Anspruch 5,
dadurch gekennzeichnet, daß der Kolben (19) mit seiner Stirnseite die Bohrung (8) vom Zylinderinnenraum (5) verschließt und daß der Schieber (20) mit seiner Stirnseite (21) die Gehäusebohrung (10.1) zum Auslaßkanal verschließt, wobei der Schieber (20) über einen wegabhängigen Anschlag (24) von dem Kolben (19) betätigt wird.6. Safety valve according to claim 5,
characterized in that the end of the piston (19) closes the bore (8) from the cylinder interior (5) and that the slider (20) closes the housing bore (10.1) to the outlet duct with its end (21), the slider (20 ) is actuated by a piston (19) via a travel-dependent stop (24). 7. Sicherheitsventil nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß in der Schieberstirnseite (21) eine Ringnut (23) eingelassen ist, in die die Gehäusebohrung(en) (10.1) mündet (münden).7. Safety valve according to claim 5 or 6, characterized in that an annular groove (23) is inserted in the slide end face (21), into which the housing bore (s) (10.1) opens (open). 8. Sicherheitsventil nach einem der Ansprüche 2 bis 7, dadurch gekennzeichnet, daß auf der Stirnseite des Ventilgehäuses (11), welche im Zylinderkopf (1) eingesetzt ist, eine Ringnut (18) vorgesehen ist, in die die Gehäusebohrung(en) (10.1) und die Bohrung (10) zum Auslaßkanal (7) münden.8. Safety valve according to one of claims 2 to 7, characterized in that on the end face of the valve housing (11), which is inserted in the cylinder head (1), an annular groove (18) is provided, in which the housing bore (s) (10.1 ) and the bore (10) to the outlet channel (7) open.
EP83104378A 1982-08-13 1983-05-04 Device for the spark-free removal of combustion gases Withdrawn EP0103064A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823230133 DE3230133A1 (en) 1982-08-13 1982-08-13 ARRANGEMENT FOR SPARK-FREE DISCHARGE OF COMBUSTION GASES
DE3230133 1982-08-13

Publications (2)

Publication Number Publication Date
EP0103064A2 true EP0103064A2 (en) 1984-03-21
EP0103064A3 EP0103064A3 (en) 1984-12-19

Family

ID=6170778

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83104378A Withdrawn EP0103064A3 (en) 1982-08-13 1983-05-04 Device for the spark-free removal of combustion gases

Country Status (2)

Country Link
EP (1) EP0103064A3 (en)
DE (1) DE3230133A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2624554A1 (en) * 1987-12-11 1989-06-16 Outboard Marine Corp ENGINE EQUIPPED FOR DETECTING AN EXHAUST GAS PARAMETER
FR2645910A1 (en) * 1989-04-14 1990-10-19 Outboard Marine Corp IMPROVED EXHAUST GAS DETECTOR ENGINE
FR2769047A1 (en) * 1997-09-30 1999-04-02 Bosch Gmbh Robert PROCEDURE FOR IMPLEMENTING AN INTERNAL COMBUSTION ENGINE AND FUEL INJECTION SYSTEM FOR THE APPLICATION OF THIS PROCESS
JP2017137866A (en) * 2016-02-03 2017-08-10 マン ディーゼル アンド ターボ フィリアル ア マン ディーゼル アンド ターボ エスイー チュスクランＭＡＮ Ｄｉｅｓｅｌ ＆ Ｔｕｒｂｏ，ｆｉｌｉａｌ ａｆ ＭＡＮ Ｄｉｅｓｅｌ ＆ Ｔｕｒｂｏ ＳＥ，Ｔｙｓｋｌａｎｄ Two-stroke compression ignition internal combustion engine with large turbo-charger including blowoff control
DK201670927A1 (en) * 2016-11-22 2017-12-18 Man Diesel & Turbo Filial Af Man Diesel & Turbo Se Tyskland A relief valve for a large turbocharged twostroke compression-ignited internal combustion engine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE344082C (en) *
DE573831C (en) * 1931-08-15 1933-04-06 Maschf Augsburg Nuernberg Ag Device for limiting the maximum pressure in the working cylinders of internal combustion engines
DE1229780B (en) * 1962-08-27 1966-12-01 Fritz Holthaus Overpressure protection on gas machines
DE1264195B (en) * 1963-07-09 1968-03-21 Lucas Industries Ltd Pressure relief valve
FR2202248A1 (en) * 1972-10-03 1974-05-03 Bandstahlkombinat Matern Veb

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3048928A1 (en) * 1980-12-24 1982-07-15 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Cylinder overpressure relief valve with electropneumatic switch - for initiating reduction or suppression of fuel supplied to the injector of affected cylinder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE344082C (en) *
DE573831C (en) * 1931-08-15 1933-04-06 Maschf Augsburg Nuernberg Ag Device for limiting the maximum pressure in the working cylinders of internal combustion engines
DE1229780B (en) * 1962-08-27 1966-12-01 Fritz Holthaus Overpressure protection on gas machines
DE1264195B (en) * 1963-07-09 1968-03-21 Lucas Industries Ltd Pressure relief valve
FR2202248A1 (en) * 1972-10-03 1974-05-03 Bandstahlkombinat Matern Veb

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2624554A1 (en) * 1987-12-11 1989-06-16 Outboard Marine Corp ENGINE EQUIPPED FOR DETECTING AN EXHAUST GAS PARAMETER
BE1001690A3 (en) * 1987-12-11 1990-02-06 Outboard Marine Corp Motor team for detection of a set of exhaust gases.
FR2645910A1 (en) * 1989-04-14 1990-10-19 Outboard Marine Corp IMPROVED EXHAUST GAS DETECTOR ENGINE
FR2769047A1 (en) * 1997-09-30 1999-04-02 Bosch Gmbh Robert PROCEDURE FOR IMPLEMENTING AN INTERNAL COMBUSTION ENGINE AND FUEL INJECTION SYSTEM FOR THE APPLICATION OF THIS PROCESS
US6098596A (en) * 1997-09-30 2000-08-08 Robert Bosch Gmbh Process for operating an internal combustion engine and a fuel injection system for carrying out the process
JP2017137866A (en) * 2016-02-03 2017-08-10 マン ディーゼル アンド ターボ フィリアル ア マン ディーゼル アンド ターボ エスイー チュスクランＭＡＮ Ｄｉｅｓｅｌ ＆ Ｔｕｒｂｏ，ｆｉｌｉａｌ ａｆ ＭＡＮ Ｄｉｅｓｅｌ ＆ Ｔｕｒｂｏ ＳＥ，Ｔｙｓｋｌａｎｄ Two-stroke compression ignition internal combustion engine with large turbo-charger including blowoff control
DK201670059A1 (en) * 2016-02-03 2017-08-28 Man Diesel & Turbo Filial Af Man Diesel & Turbo Se Tyskland A large turbocharged two-stroke compression-ignited internal combustion engine with blow-off control
DK179120B1 (en) * 2016-02-03 2017-11-13 Man Diesel & Turbo Filial Af Man Diesel & Turbo Se Tyskland A large turbocharged two-stroke compression-ignited internal combustion engine with blow-off control
DK201670927A1 (en) * 2016-11-22 2017-12-18 Man Diesel & Turbo Filial Af Man Diesel & Turbo Se Tyskland A relief valve for a large turbocharged twostroke compression-ignited internal combustion engine
DK179156B1 (en) * 2016-11-22 2017-12-18 Man Diesel & Turbo Filial Af Man Diesel & Turbo Se Tyskland A relief valve for a large turbocharged twostroke compression-ignited internal combustion engine
CN108087119A (en) * 2016-11-22 2018-05-29 曼狄赛尔公司德国曼柴油机欧洲股份公司的联营公司 The safety valve of large turbine pressurizing two-stroke compression ignition engine
KR20180057527A (en) * 2016-11-22 2018-05-30 맨 디젤 앤드 터보 필리얼 아프 맨 디젤 앤드 터보 에스이 티스크랜드 Relief valve for large turbocharged two-stroke compression-ignited internal combustion engine
CN108087119B (en) * 2016-11-22 2019-09-06 曼能解决方案（曼能解决方案德国股份公司）分公司 The safety valve of large turbine pressurizing two-stroke compression ignition engine

Also Published As

Publication number Publication date
EP0103064A3 (en) 1984-12-19
DE3230133A1 (en) 1984-02-16

Similar Documents

Publication Publication Date Title
EP1363013B1 (en) Heat exchanger
DE1451904B2 (en) CONTROL DEVICE FOR THE BLOW-OFF VALVE OF A GAS TURBINE IN PARTICULAR AN EXHAUST GAS TURBINE OF A PISTON ENGINE MACHINE
DE112010002788T5 (en) Turbocharger turbine
DE1934704C3 (en) Control device for a fuel injection nozzle for spark-ignition internal combustion engines
DE19848217A1 (en) Gas compressor has additional compression chambers and throttle pipes to bypass closure valves when idling, to lower self-stabilizing idling pressure
EP0103064A2 (en) Device for the spark-free removal of combustion gases
EP0177620A1 (en) Pressure fluid-actuated valve
EP0193142B1 (en) Engine-braking system for an internal-combustion engine
EP0165395A2 (en) Control valve for the cooling medium circuit of an internal combuston engine
DE2946747A1 (en) MOTOR BRAKE FOR MOTOR VEHICLES
DE2832526A1 (en) Four-stroke IC engine with exhaust gas braking - has stops preventing full exhaust valve closure when brake flap valve is operated
DE102013006369B4 (en) Ring slide device for an exhaust gas turbocharger
DE2915432A1 (en) VALVE ACTUATOR
DE2535950C2 (en) Automatic control valve for the crankcase ventilation of an internal combustion engine
DE2918916A1 (en) GAS FLOW CONTROL DEVICE AND CONTROL SYSTEM FOR AN EXHAUST TURBOCHARGER
EP0922850A2 (en) Fuel supply system
DE1476037C (en) Device on inlet valves on charged internal combustion engines
AT522878B1 (en) Cylinder head cover
DE965176C (en) Exhaust engine brake for internal combustion engines
DE3603418A1 (en) Reciprocating piston internal combustion engine
DE2503121C3 (en) Shut-off valve for high pressure spray guns
DE3703303A1 (en) QUICK-RELEASE GATE VALVE
DE1626006C (en) Cylinder head for a water-cooled internal combustion engine
DE10125544C2 (en) Device for the hydraulic actuation of a valve
EP3892896A1 (en) Gate valve, rod assembly for a gate valve and method for venting a gate valve

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): CH DE FR GB LI NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): CH DE FR GB LI NL

17P Request for examination filed

Effective date: 19841024

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19860702

RIN1 Information on inventor provided before grant (corrected)

Inventor name: CRAMER, HANS

Inventor name: GOEBEL, HUGO