EP0464317B1 - Druckventileinheit an einem Ausgleichsbehälter im Kühlkreis einer Brennkraftmaschine - Google Patents

Druckventileinheit an einem Ausgleichsbehälter im Kühlkreis einer Brennkraftmaschine Download PDF

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Publication number
EP0464317B1
EP0464317B1 EP91105000A EP91105000A EP0464317B1 EP 0464317 B1 EP0464317 B1 EP 0464317B1 EP 91105000 A EP91105000 A EP 91105000A EP 91105000 A EP91105000 A EP 91105000A EP 0464317 B1 EP0464317 B1 EP 0464317B1
Authority
EP
European Patent Office
Prior art keywords
valve
valve unit
receiving housing
housing
tank
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
Application number
EP91105000A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0464317A1 (de
Inventor
Wolfgang Kleineberg
Hans Schaal
Thomas Attinger
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.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
Mercedes Benz 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 Daimler Benz AG, Mercedes Benz AG filed Critical Daimler Benz AG
Publication of EP0464317A1 publication Critical patent/EP0464317A1/de
Application granted granted Critical
Publication of EP0464317B1 publication Critical patent/EP0464317B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/029—Expansion reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • F01P11/0204—Filling
    • F01P11/0209—Closure caps
    • F01P11/0238—Closure caps with overpressure valves or vent valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/22—Liquid cooling characterised by evaporation and condensation of coolant in closed cycles; characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point
    • F01P3/2207—Liquid cooling characterised by evaporation and condensation of coolant in closed cycles; characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point characterised by the coolant reaching temperatures higher than the normal atmospheric boiling point

Definitions

  • the invention relates to a pressure valve unit on an expansion tank in the cooling circuit of an internal combustion engine according to the preamble of claim 1.
  • a pressure valve unit of the generic type is known from EP-A-0 177 860.
  • the pressure valve unit described therein consists of an insert separated from the expansion tank with two spring-loaded pressure relief valves arranged downstream in the vertical direction for pressure-additive control of an overpressure in the expansion tank, the insert being arranged in a filler neck formed on the ceiling under a sealing system.
  • the insert has a housing for the pressure relief valves, which are connected to one another by an overflow bore.
  • the housing facing the container interior and projecting into it is designed as a cage, in which a float is received, which carries one of the valves and controls the overflow bore depending on the fill level.
  • the valve carried by the float has its own overflow hole to the interior of the tank.
  • a similar pressure valve unit is known from EP-A-0 180 208, in which, however, the valve housings, which are jointly connected to the interior of the tank via an overflow bore, themselves form part of the expansion tank.
  • the sealing surfaces of both valves are therefore also part of the container ceiling, so that the sealing surfaces distort when the container is warped due to pressure, as a result of which the valve unit becomes inoperative.
  • the invention has for its object to provide a pressure valve unit in which leaks caused by changes in shape of the expansion tank are avoided.
  • valve unit Due to the horizontal arrangement of the valve receptacle housing, which encloses the two valve housings with the valves, the valve unit is only pressurized in the radial direction when the container is warped, whereby a warpage offset of the container ceiling can be compensated for by the sealing system.
  • the sealing surfaces uncoupled from the container remain undisturbed in the event of a pressure-related change in the shape of the expansion container and therefore do not experience any loss of tightness.
  • the lying configuration of the valve unit on the ceiling of the expansion tank advantageously increases Narrow installation spaces, contrary to the design from the prior art, require little space for the upper part of the engine compartment.
  • valve unit in a special embodiment of the valve unit according to the invention according to claim 4, a connection of the two valve housings by means of a clip is provided, which facilitates handling when coupling valve housings.
  • O-ring seals according to claim 2 ensures compliance with warping tolerances with regard to tightness and represents an inexpensive seal variant.
  • Figure 1 shows a part of a surge tank 1, which has longitudinal and transverse ribs 2 on its surface, which form the end of intermediate walls not shown here within the container 1 with the container body.
  • the container body has a weld bead 3 all around, by means of which the connection of a lower part 4 to an upper part 5 of the container body is shown.
  • a tubular receiving housing 9 for a pressure valve unit is fastened horizontally in the area of a ceiling edge 7 along a longitudinal rib 8.
  • FIG. 2 shows part of the ceiling 6 of an expansion tank 1, which is not shown in detail, in which the receiving housing 9 can be seen in a lying manner, an underside 10 of the receiving housing being part of the ceiling 6 forms.
  • the receptacle housing has an end wall 11 which is perpendicular and centrally to the ceiling and widens symmetrically in two stages 12, 13. Inside the receiving housing there are two pressure relief valves 14, 15 in valve housings 16, 17, an outlet side 18 of the first 16 being clipped onto an inlet side 19 of the second valve housing 17. The opening direction of the pressure relief valves 14, 15 is in the widening direction of the receiving housing.
  • the pressure relief valves each consist of a spiral spring 20 and a valve body 21, which is pressed by the spiral spring onto sealing surfaces 22, 23 of the respective valve housing 16, 17 and closes the inlet-side valve opening 24.
  • the second valve housing additionally contains a vacuum valve 25.
  • valve unit holder 26 which surrounds the pressure valve unit, consisting of the first 14 and the second pressure relief valve 15 with their housings 16, 17. This can be done via a clip, a screw thread or bayonet lock. Furthermore, an outlet side 27 of the second pressure relief valve 15 is clipped to an overflow connection 28, which is located in the region of the lower side 10 of the receiving housing.
  • the valve housings 16, 17 are each sealed and supported against the receiving housing 9 by means of an O-ring 29, 30 before the first 12 and before the second stage 13, the interior of which is thereby divided into three sub-spaces 31, 32, 33.
  • an overflow bore 34 35 to the interior 36 of the expansion tank 1 in the partial space 31 and 32.
  • a cage 37 (only shown schematically) is fastened to the underside 10 of the expansion tank on the interior side.
  • the cage 37 contains a float 38 which closes the overflow bore 35 from a certain liquid level in the expansion tank 1, in which case the valve unit is pressurized exclusively via the overflow bore 34.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Safety Valves (AREA)
  • Valve Housings (AREA)
EP91105000A 1990-06-29 1991-03-28 Druckventileinheit an einem Ausgleichsbehälter im Kühlkreis einer Brennkraftmaschine Expired - Lifetime EP0464317B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4020866 1990-06-29
DE4020866A DE4020866C1 (es) 1990-06-29 1990-06-29

Publications (2)

Publication Number Publication Date
EP0464317A1 EP0464317A1 (de) 1992-01-08
EP0464317B1 true EP0464317B1 (de) 1993-10-20

Family

ID=6409418

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91105000A Expired - Lifetime EP0464317B1 (de) 1990-06-29 1991-03-28 Druckventileinheit an einem Ausgleichsbehälter im Kühlkreis einer Brennkraftmaschine

Country Status (5)

Country Link
US (1) US5088453A (es)
EP (1) EP0464317B1 (es)
JP (1) JPH0747929B2 (es)
DE (1) DE4020866C1 (es)
ES (1) ES2047357T3 (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1260685B1 (de) * 2001-05-23 2006-08-09 Mann + Hummel GmbH Behälter für das Kühlmittel einer Brennkraftmaschine
US8038878B2 (en) * 2008-11-26 2011-10-18 Mann+Hummel Gmbh Integrated filter system for a coolant reservoir and method
CN102251842B (zh) * 2011-05-05 2012-09-26 哈尔滨工程大学 密闭水冷循环系统中膨胀箱液位压力稳定装置
US8899433B2 (en) * 2012-10-15 2014-12-02 Mann+Hummel Gmbh Fluid reservoir and method of manufacturing a fluid reservoir
DE102015105921B4 (de) * 2015-04-17 2024-05-08 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Kühlsystem für ein Fahrzeug und Verfahren zum Betreiben desselben
JP2020133541A (ja) * 2019-02-22 2020-08-31 株式会社ティラド 自動車用ラジエータの弁構造

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3700166A (en) * 1971-08-20 1972-10-24 Scovill Manufacturing Co Filling and valving assembly for radiator system
DE3436702A1 (de) * 1984-10-06 1986-04-10 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart Vorrichtung zum absichern des kuehlmittelkreislaufs eines verbrennungsmotors
DE3439554A1 (de) * 1984-10-29 1986-04-30 Bayerische Motoren Werke AG, 8000 München Drucksteuervorrichtung fuer den kuehlkreis von brennkraftmaschinen
DE3440008A1 (de) * 1984-11-02 1986-07-03 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Paketierte sammelschiene
DE3832103C2 (de) * 1988-09-21 1996-08-29 Blau Kg Kraftfahrzeugtech Verschlußdeckel für die Füllöffnung eines Kühlmittelbehälters in Kfz-Kühlanlagen
DE9002439U1 (es) * 1990-03-02 1990-05-03 Sueddeutsche Kuehlerfabrik Julius Fr. Behr Gmbh & Co Kg, 7000 Stuttgart, De

Also Published As

Publication number Publication date
EP0464317A1 (de) 1992-01-08
JPH0747929B2 (ja) 1995-05-24
JPH05332137A (ja) 1993-12-14
DE4020866C1 (es) 1991-05-23
ES2047357T3 (es) 1994-02-16
US5088453A (en) 1992-02-18

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