WO2005078255A3 - Fail-safe thermostat device for vehicular cooling systems - Google Patents

Fail-safe thermostat device for vehicular cooling systems Download PDF

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Publication number
WO2005078255A3
WO2005078255A3 PCT/US2005/004287 US2005004287W WO2005078255A3 WO 2005078255 A3 WO2005078255 A3 WO 2005078255A3 US 2005004287 W US2005004287 W US 2005004287W WO 2005078255 A3 WO2005078255 A3 WO 2005078255A3
Authority
WO
WIPO (PCT)
Prior art keywords
fail
spring
safe
thermostat device
eutectic alloy
Prior art date
Application number
PCT/US2005/004287
Other languages
French (fr)
Other versions
WO2005078255B1 (en
WO2005078255A2 (en
Inventor
Keith A Leu
Richard Stonley
Tim Wade
James Carson Hawkins
Original Assignee
Cooper Standard Automotive Inc
Keith A Leu
Richard Stonley
Tim Wade
James Carson Hawkins
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 Cooper Standard Automotive Inc, Keith A Leu, Richard Stonley, Tim Wade, James Carson Hawkins filed Critical Cooper Standard Automotive Inc
Publication of WO2005078255A2 publication Critical patent/WO2005078255A2/en
Publication of WO2005078255A3 publication Critical patent/WO2005078255A3/en
Publication of WO2005078255B1 publication Critical patent/WO2005078255B1/en

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
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • 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
    • F01P11/14—Indicating devices; Other safety devices
    • F01P11/16—Indicating devices; Other safety devices concerning coolant temperature
    • 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
    • F01P2031/00—Fail safe
    • F01P2031/16—Fail safe using melting materials
    • 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
    • F01P2031/00—Fail safe
    • F01P2031/32—Deblocking of damaged thermostat
    • 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
    • F01P2070/00—Details
    • F01P2070/02—Details using shape memory alloys

Abstract

A fail-safe thermostat device (19) for a vehicle cooling system includes a main spring (40) and a valve assembly (37) disposed on an end portion of the main spring (40). A spring retainer (30) is affixed to a thermal actuator (32) and bonded to a poppet valve portion (34) by an eutectic alloy interface (36). A fail-safe spring (38) is compressively disposed between the spring retainer (30) and the poppet valve portion (34). When an engine temperature reaches a value greater than a pre-determined maximum engine operating temperature, the eutectic alloy interface (36) degrades. The compressive force stored in the fail-safe spring (38) overcomes a shear strength associated with the degraded eutectic alloy interface (36) and is sufficiently greater than a tensile force exerted by the main spring (40) on the poppet valve assembly (37). The fail-safe spring (38) then actuates to compress the main spring (40), opening the fail-safe thermostat device (19). This allows coolant to flow freely through the vehicular cooling system, preventing engine damage.
PCT/US2005/004287 2004-02-11 2005-02-11 Fail-safe thermostat device for vehicular cooling systems WO2005078255A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US54353004P 2004-02-11 2004-02-11
US60/543,530 2004-02-11

Publications (3)

Publication Number Publication Date
WO2005078255A2 WO2005078255A2 (en) 2005-08-25
WO2005078255A3 true WO2005078255A3 (en) 2005-10-13
WO2005078255B1 WO2005078255B1 (en) 2005-12-29

Family

ID=34860437

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/004287 WO2005078255A2 (en) 2004-02-11 2005-02-11 Fail-safe thermostat device for vehicular cooling systems

Country Status (1)

Country Link
WO (1) WO2005078255A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008059613B4 (en) * 2008-11-28 2010-12-30 Itw Automotive Products Gmbh Cooling system for an internal combustion engine
FR3016198B1 (en) 2014-01-09 2016-01-15 Vernet THERMOSTATIC VALVE
JP7136667B2 (en) * 2018-11-19 2022-09-13 トヨタ自動車株式会社 internal combustion engine cooling system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045918A (en) * 1958-11-06 1962-07-24 Standard Thomson Corp Actuator
US3498537A (en) * 1968-08-26 1970-03-03 Standard Thomson Corp Fail-safe thermostatic fluid valve structure
US4453668A (en) * 1982-11-10 1984-06-12 Caltherm Corporation Fail-safe thermostatic valve
EP0333687A2 (en) * 1988-03-18 1989-09-20 S.T.C., Inc. Fail-safe thermostat for vehicular system
US5381952A (en) * 1993-10-15 1995-01-17 Standard-Thomson Corporation Fail-safe thermostat
FR2816358A1 (en) * 2000-11-07 2002-05-10 Alain Bourgin Fusible valve for motor vehicle internal combustion engine cooling circuit has reaction chamber with locking spring and piloted control for forced cooling by full opening of valves

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045918A (en) * 1958-11-06 1962-07-24 Standard Thomson Corp Actuator
US3498537A (en) * 1968-08-26 1970-03-03 Standard Thomson Corp Fail-safe thermostatic fluid valve structure
US4453668A (en) * 1982-11-10 1984-06-12 Caltherm Corporation Fail-safe thermostatic valve
EP0333687A2 (en) * 1988-03-18 1989-09-20 S.T.C., Inc. Fail-safe thermostat for vehicular system
US5381952A (en) * 1993-10-15 1995-01-17 Standard-Thomson Corporation Fail-safe thermostat
FR2816358A1 (en) * 2000-11-07 2002-05-10 Alain Bourgin Fusible valve for motor vehicle internal combustion engine cooling circuit has reaction chamber with locking spring and piloted control for forced cooling by full opening of valves

Also Published As

Publication number Publication date
WO2005078255B1 (en) 2005-12-29
WO2005078255A2 (en) 2005-08-25

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