EP1136673A3 - Pressure control valve for a cooling system - Google Patents

Pressure control valve for a cooling system Download PDF

Info

Publication number
EP1136673A3
EP1136673A3 EP01106204A EP01106204A EP1136673A3 EP 1136673 A3 EP1136673 A3 EP 1136673A3 EP 01106204 A EP01106204 A EP 01106204A EP 01106204 A EP01106204 A EP 01106204A EP 1136673 A3 EP1136673 A3 EP 1136673A3
Authority
EP
European Patent Office
Prior art keywords
flange
closure member
seal
spring
cooling system
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
EP01106204A
Other languages
German (de)
French (fr)
Other versions
EP1136673B1 (en
EP1136673A2 (en
Inventor
William Richard Hutchins
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1136673A2 publication Critical patent/EP1136673A2/en
Publication of EP1136673A3 publication Critical patent/EP1136673A3/en
Application granted granted Critical
Publication of EP1136673B1 publication Critical patent/EP1136673B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F01P11/0204—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
    • 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
    • F01P11/0214—Mounting
    • F01P2011/0228—Sealing

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Safety Valves (AREA)
  • Check Valves (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Abstract

Eine Druckregelventilanordnung (28) für das Kühlsystem einer flüssigkeitsgekühlten Brennkraftmaschine ist im Einfülldeckel (25) eines Ausgleichsbehälters eingebaut. Ein hutförmiges Verschlussglied (37) bedeckt eine von einem Innenflansch (34) umgebene mittlere Öffnung (36) und steht durch eine vorbelastete Druckfeder (41) unter Federvorspannung. Radial einwärts einer ringförmigen Grenzfläche zwischen dem Flansch (34) und dem Verschlussglied (37) befindet sich eine mit dem Verschlussglied (37) derart verklebte elastische Dichtung (42), dass sie zwischen dem Verschlussglied und dem Flansch (34) abdichtet. In diesem Zustand wird die Dichtung (42) zusammengedrückt und reagiert so gegen den Flansch (34) mit einer elastischen Reaktionslast, die wesentlich geringer ist als die Vorbelastung von der Feder (41). Im Gebrauch wird durch einen Druckanstieg im Kühlsystem auf das Verschlussglied (37) eine Last ausgeübt, die der Vorbelastung der Feder (41) entgegenwirkt, so dass sich der Außenrandteil (39) bei einem vorbestimmten Druck von seiner Stoßstelle mit dem Flansch (34) abhebt und Luft oder Dampf aus der Öffnung (36) entweichen kann. Die reduzierte Reaktionslast der Dichtung gegen die Oberseite (35) verringert die Neigung der Dichtung (42), auf der Flanschoberseite (35) haftenzubleiben.

Figure 00000001
A pressure control valve arrangement (28) for the cooling system of a liquid-cooled internal combustion engine is installed in the filler cap (25) of an expansion tank. A hat-shaped closure member (37) covers a central opening (36) surrounded by an inner flange (34) and is spring-biased by a preloaded compression spring (41). Radially inward of an annular interface between the flange (34) and the closure member (37) there is an elastic seal (42) glued to the closure member (37) such that it seals between the closure member and the flange (34). In this state, the seal (42) is compressed and thus reacts against the flange (34) with an elastic reaction load that is significantly less than the preload from the spring (41). In use, an increase in pressure in the cooling system exerts a load on the closure member (37) which counteracts the preloading of the spring (41), so that the outer edge part (39) lifts off its abutment with the flange (34) at a predetermined pressure and air or steam can escape from the opening (36). The reduced reaction load of the seal against the top (35) reduces the tendency of the seal (42) to stick to the flange top (35).
Figure 00000001
EP01106204A 2000-03-20 2001-03-14 Pressure control valve for a cooling system Expired - Lifetime EP1136673B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0006621A GB2360512A (en) 2000-03-20 2000-03-20 Pressure control valve for cooling system
GB0006621 2000-03-20

Publications (3)

Publication Number Publication Date
EP1136673A2 EP1136673A2 (en) 2001-09-26
EP1136673A3 true EP1136673A3 (en) 2003-03-05
EP1136673B1 EP1136673B1 (en) 2006-05-31

Family

ID=9887946

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01106204A Expired - Lifetime EP1136673B1 (en) 2000-03-20 2001-03-14 Pressure control valve for a cooling system

Country Status (3)

Country Link
EP (1) EP1136673B1 (en)
DE (1) DE50109913D1 (en)
GB (1) GB2360512A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2164450A (en) * 1937-12-30 1939-07-04 Gen Motors Corp Radiator pressure cap
US2521201A (en) * 1949-02-23 1950-09-05 Bruce E Clark Radiator pressure cap
GB1534318A (en) * 1976-08-12 1978-11-29 Gen Motors France Closure caps
US5071020A (en) * 1988-11-23 1991-12-10 Reutter Metallwarenfabrik Gmbh Radiator neck with radiator cover cap

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE477590A (en) * 1945-01-12
US3489170A (en) * 1966-06-17 1970-01-13 Arthur L Leman Slush pump valve assembly
GB1596533A (en) * 1977-11-18 1981-08-26 Coca Cola Co Pressure relief valves

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2164450A (en) * 1937-12-30 1939-07-04 Gen Motors Corp Radiator pressure cap
US2521201A (en) * 1949-02-23 1950-09-05 Bruce E Clark Radiator pressure cap
GB1534318A (en) * 1976-08-12 1978-11-29 Gen Motors France Closure caps
US5071020A (en) * 1988-11-23 1991-12-10 Reutter Metallwarenfabrik Gmbh Radiator neck with radiator cover cap

Also Published As

Publication number Publication date
EP1136673B1 (en) 2006-05-31
DE50109913D1 (en) 2006-07-06
EP1136673A2 (en) 2001-09-26
GB0006621D0 (en) 2000-05-10
GB2360512A (en) 2001-09-26

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