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EP0098979A1 - Dispositif de réglage de température dans un circuit de refroidissement d'un moteur à combustion interne, spécialement pour un moteur de véhicule - Google Patents

Dispositif de réglage de température dans un circuit de refroidissement d'un moteur à combustion interne, spécialement pour un moteur de véhicule Download PDF

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Publication number
EP0098979A1
EP0098979A1 EP83105752A EP83105752A EP0098979A1 EP 0098979 A1 EP0098979 A1 EP 0098979A1 EP 83105752 A EP83105752 A EP 83105752A EP 83105752 A EP83105752 A EP 83105752A EP 0098979 A1 EP0098979 A1 EP 0098979A1
Authority
EP
European Patent Office
Prior art keywords
thermostatic
valve
working
actuator
abutment
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
EP83105752A
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German (de)
English (en)
Other versions
EP0098979B1 (fr
Inventor
Roland Saur
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.)
Behr Thomson Dehnstoffregler GmbH and Co
Original Assignee
Behr Thomson Dehnstoffregler GmbH and Co
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6168294&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0098979(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Behr Thomson Dehnstoffregler GmbH and Co filed Critical Behr Thomson Dehnstoffregler GmbH and Co
Publication of EP0098979A1 publication Critical patent/EP0098979A1/fr
Application granted granted Critical
Publication of EP0098979B1 publication Critical patent/EP0098979B1/fr
Expired 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
    • 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
    • F01P7/167—Controlling of coolant flow the coolant being liquid by thermostatic control by adjusting the pre-set temperature according to engine parameters, e.g. engine load, engine speed

Definitions

  • the invention relates to a device for regulating the temperature in a cooling circuit of an internal combustion engine, in particular a motor vehicle engine, which contains a thermostatic valve which regulates the coolant flow from the internal combustion engine through a direct return and / or a heat exchanger back to the internal combustion engine and which contains a thermostatic working element.
  • a thermostatic valve which regulates the coolant flow from the internal combustion engine through a direct return and / or a heat exchanger back to the internal combustion engine and which contains a thermostatic working element.
  • whose housing carries a valve plate of a valve leading to the heat exchanger and whose working piston which extends when heated is opposite an abutment.
  • thermostatic valve At high outside temperatures, however, the thermostatic valve should open at a significantly lower temperature so that the operating temperature of the engine is not exceeded. In practice, therefore, there has long been a desire to design a thermostatic valve so that it opens at a higher temperature at low outside temperatures than at higher outside temperatures. This need was previously met by installing so-called winter thermostatic valves for low outside temperatures and so-called summer thermostatic valves for higher outside temperatures. However, this leads to an additional maintenance process and, above all, to the risk of engine damage if the thermostatic valve is not selected correctly.
  • the invention has for its object to design a device of the type mentioned with simple and reliable means so that a change in the valve characteristic is made possible.
  • This object is achieved in that the position of the abutment can be changed in such a way that it forms support points for the working piston, the distance of which from the housing can be adjusted with the valve disk.
  • the working range of the thermostatic valve can be changed in a simple manner.
  • a fundamental change of the valve construction which has been tried and tested many times in practice, is not necessary, so that proven parts and designs can be used.
  • the work area can not only be switched to two extreme positions, but can also be set to intermediate positions, so that effective control is possible which, in addition to or instead of the existing outside temperature, can also use other values as reference variables for the control, for example the exhaust gas temperature and the speed and / or the torque of the engine, the vacuum in the intake manifold, the pressure difference in a vacuum can, the oil temperature or the like. Based on these values, it is possible to change the engine temperature within certain limits in order to optimize the operation of the internal combustion engine.
  • an inlet 17 for the coolant of an internal combustion engine is provided, which can be connected via a thermostatic valve to a direct return 18 and / or to a connection piece 15 leading to a heat exchanger (not shown).
  • a line leads from the heat exchanger back to the internal combustion engine in a manner also not shown.
  • the thermostatic valve has a thermostatic working element that an Ar has piston 2 and a housing 3.
  • An expansion material is accommodated in the housing 3, which expands when heated and thereby drives the working piston 2 out of the housing 3. When cooling, the expansion material reduces its volume so that the working piston 2 can be pressed back into the housing 3.
  • a valve plate 4 is fixedly connected, for example by pressing or flanging or the like, which is associated with a conical edge of a rectangular valve seat 16, which is formed by the connecting piece 15.
  • the valve formed from the valve plate 4 and the valve seat 16 closes or opens the connection between the inlet 17 and the connection stub 15 leading to the heat exchanger.
  • the valve plate 4 is held in the closed position shown with a conical compression spring 19.
  • a further valve plate 20 is arranged on the housing 3 by means of a slide guide, which is assigned to the direct return 18, which has a valve seat 21 assigned to the valve plate 20.
  • the valve plate 20 is loaded with a compression spring 22 which is supported on the housing 3 in the region of the valve plate 4.
  • the inlet 17 is located between the two valve plates 4 and 20.
  • the working piston 2 of the thermostatic working element is supported on an abutment 1.
  • the thermostatic valve When the internal combustion engine is started and the coolant is circulated, the thermostatic valve is in the position shown in FIG. 1, ie the connection from the inlet to the connecting piece 15 is closed and the connection to the direct return 18 is open.
  • the coolant flows around the housing 3 of the thermo static work element.
  • the working piston 2 When a temperature determined by the design of the expansion material of the thermostatic working element is reached, the working piston 2 is extended over a specific working range according to a specific characteristic which is dependent on the expansion material.
  • the working piston 2, which is supported on the abutment 1 then moves the housing 3 with the valve disks 4 and 20, so that initially both valves 4, 16 and 20, 21 are open over a certain temperature range, while the valve then increases as the temperature increases further 20, 21 is closed and only the valve 4, 16 is open.
  • the abutment 1 is independent of and provided relative to the thermostatic working element adjustable supporting body 5 which is displaceable transversely to the axis of the working piston 2 and which has a supporting surface 13 inclined to the axis of the working piston 2.
  • the direction of displacement of the support body 5 and the inclination of the support surface 13 are selected relative to the axis of the working piston 2 so that the adjustment movement of the support body is converted into a change in the area X with a reduction, if necessary a translation can also be set.
  • the support point 13 of the support surface 13, which is the most distant from the housing 3 and the valve 4 is in use, so that opening of the valve 4, 16 (and closing of the valve 20, 21) takes place only at an elevated level Temperature of the coolant takes place, which is desirable, for example, at low outside temperatures.
  • the working piston 2 must first travel an empty path of size X before it actually engages Supporting surface 13 supports and can move this and the valve plate 4 and 20 by a further extension of the housing 3.
  • the free travel of the working piston 2 can be reduced, so that the working range of the thermostatic working element and thus the thermostatic valve is thus shifted to a lower temperature level, as is the case, for example, with high temperatures Outside temperatures is desired.
  • the working piston 2 With the same heating of the thermostatic working element, the working piston 2 then reaches the stop surface 13 earlier, so that the opening movement of the valve 4, 16 (and the closing movement of the valve 20, 21) begins earlier.
  • support points lying between the two end points of the inclined support surface 13 can also be selected, so that the working range of the thermostatic valve can be varied continuously within the selected limits.
  • the supporting body 5 of the abutment 1 is displaced by an actuator 9, which is designed as a thermostatic working element.
  • a working piston 23 is extended from the thermostatic working element 9, which is correspondingly moved back on cooling, for which purpose a return spring 25 is provided, which loads the support body 5, which is a piston which is aligned coaxially with the working piston 23 and which is in a guide in a guide Housing 26 slides, which is integrally formed with the connecting piece 15.
  • the thermostatic working element 9 is screwed into this housing 26 with a threaded shoulder 27.
  • the thermostatic working element 9 is provided in a known manner with an electrical heating element, for example a PTC resistor, so that the linear movement of the working piston and thus the setting of the working range of the thermostatic valve can be controlled electrically.
  • the stream supply to the thermostatic working element is effected by a signal converter 28, which can be activated due sizes laminatester F mulungs-.
  • the outside temperature or the outside temperature instead further reference variables for a change of the operating range of the thermostat valve, for example, the exhaust gas temperature, the speed or the torque of the internal combustion engine, the negative pressure in the intake manifold, the pressure difference in a U ntertikdose or the oil temperature or the like
  • the return spring 25 In order to be able to change the working range of the thermostatic valve, even if the working piston 2 of the thermostatic working element of the thermostatic valve is already fully or partially extended, the return spring 25 must be designed so that it overcomes the force of the spring 19 and the valve 4, 16 through Moving the housing 3 with the valve plate 4 can open.
  • the connecting piece 15 with the thermostatic valve and the adjustable abutment 1 is formed as a structural unit which can be assembled as a whole and, if necessary, exchanged.
  • the exemplary embodiment according to FIG. 1 can also be modified in such a way that the device works without the supply of auxiliary energy, i.e. the thermostatic working element 9 adjusts the support body 5 depending on the ambient temperature.
  • the thermostatic working element 9 can be designed by the choice of the expansion material contained in it so that at low ambient temperatures up to, for example, 15 ° C., the valve 4, 16 opens at a higher temperature of the coolant than at ambient temperatures of more than 15 ° C.
  • the thermostatic working element 9 and the return spring 25 would have to be interchanged, so that when the working piston 23 of the working element is retracted, the ambient temperature of the supporting point 13 of the supporting surface 13 that is being used is further from the housing 3 and the valve 4 and also the valve seat 16 is removed than when the working piston 23 of the working element 9 is extended (higher ambient temperature).
  • FIG. 2 to 5 show further exemplary embodiments of actuators with which the working range of a thermostatic valve can be shifted in accordance with FIG. 1 by providing an externally adjustable abutment for the working piston 3 of the thermostatic working element.
  • linear actuators or rotating actuators can be provided.
  • the exemplary embodiments shown represent only a section of the most varied possibilities, which can work with or without the supply of auxiliary energy. Actuators with hydraulic or pneumatic actuators can also be easily provided.
  • a reversible rotary motor 10 is provided as an actuator, which engages with a drive pinion 29 in a rack 30 of a support body 6, which can be moved back and forth transversely to the axis of a working piston 2 of a thermostatic working element is to adjust the work area by the amount X of a thermostatic valve.
  • a support surface 14 extending obliquely to the axis of the working piston 2 is connected to the toothed rack 30.
  • the rotary motor 10 is designed so that it can also work against the force of the spring 19 of the thermostatic valve.
  • an actuator 11 with a linear drive movement is again provided, for example a thermostatic element or a solenoid or a motor with a rotating spindle, which loads a support body 7 designed as a double-armed lever, which around a transverse to the axis of a working piston 2 one thermostatic working element of a thermostatic valve extending axis is pivotable.
  • the double-armed lever 7 is loaded with a compression spring 31, which causes the return movement and which is stronger than the valve springs, not shown.
  • the support body 8 is directly adjustable in the axial direction of the working piston 2 of a thermostatic working element of a thermostatic valve.
  • the support body 8 is, for example, the working piston of a thermostatic working element 12, which is electrically heated, i.e. works with an auxiliary energy or that works without auxiliary energy and responds to the ambient temperature in such a way that its working piston remains retracted at a low ambient temperature and only extends from a certain ambient temperature.
  • the support body 8 can also be the spindle of a rotating spindle motor. It can also be the piston of a solenoid.
  • a toothed rail according to the exemplary embodiment according to FIGS. 2 and 3, it is also possible to provide a disk which can be rotated about an axis parallel to the pinion 29 and is provided with external teeth, which is provided on its side facing the working piston 2 with a cam surface serving as a supporting surface the different working areas for the working piston are adjustable.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Temperature-Responsive Valves (AREA)
  • Electronic Switches (AREA)
  • Common Mechanisms (AREA)
EP83105752A 1982-07-13 1983-06-11 Dispositif de réglage de température dans un circuit de refroidissement d'un moteur à combustion interne, spécialement pour un moteur de véhicule Expired EP0098979B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3226104A DE3226104C2 (de) 1982-07-13 1982-07-13 Thermostatventil zur Regelung der Temperatur der Kühlflüssigkeit einer Brennkraftmaschine
DE3226104 1982-07-13

Publications (2)

Publication Number Publication Date
EP0098979A1 true EP0098979A1 (fr) 1984-01-25
EP0098979B1 EP0098979B1 (fr) 1986-12-30

Family

ID=6168294

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83105752A Expired EP0098979B1 (fr) 1982-07-13 1983-06-11 Dispositif de réglage de température dans un circuit de refroidissement d'un moteur à combustion interne, spécialement pour un moteur de véhicule

Country Status (4)

Country Link
US (1) US4522334A (fr)
EP (1) EP0098979B1 (fr)
JP (1) JPS5923028A (fr)
DE (2) DE3226104C2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0128365A3 (en) * 1983-06-04 1985-07-31 Behr-Thomson Dehnstoffregler Gmbh Cooling device for an internal-combustion engine
FR2577278A1 (fr) * 1985-02-12 1986-08-14 Behr Thomson Dehnstoffregler Robinet a soupape thermostatique pour la regulation de la temperature du liquide de refroidissement d'un moteur a combustion interne
EP0272117A3 (fr) * 1986-12-19 1989-04-19 Adwest Group PLC Système de commande thermostatique
EP2333269A3 (fr) * 2009-09-15 2014-01-08 Behr Thermot-tronik GmbH Soupape à plusieurs voies dotée d'une perte de pression réduite

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3315308A1 (de) * 1983-04-27 1984-10-31 Gustav Wahler Gmbh U. Co, 7300 Esslingen Kuehlwasserregler fuer brennkraftmaschinen
DE3332587A1 (de) * 1983-09-09 1985-03-28 Behr-Thomson Dehnstoffregler Gmbh, 7014 Kornwestheim Vorrichtung zum regeln der temperatur in einem kuehlkreislauf eines verbrennungsmotors
DE3415876A1 (de) * 1984-04-28 1985-10-31 Behr-Thomson Dehnstoffregler Gmbh, 7014 Kornwestheim Regelventil fuer den kuehlmittelkreislauf eines verbrennungsmotors, insbesondere eines kraftfahrzeuges
DE3420982A1 (de) 1984-06-06 1985-10-24 Daimler-Benz Ag, 7000 Stuttgart Regelventil fuer den kuehlwasserkreislauf einer brennkraftmaschine
DE3516502C2 (de) * 1985-05-08 1994-05-11 Wahler Gmbh & Co Gustav Temperaturregeleinrichtung für das Kühlmittel von Brennkraftmaschinen
US4875437A (en) * 1987-12-03 1989-10-24 Procedes Vernet Apparatus for controlling the flow of cooling fluid in an engine
DE3817952A1 (de) * 1988-05-27 1989-11-30 Wahler Gmbh & Co Gustav Kuehlwasserregler fuer brennkraftmaschinen
US4890790A (en) * 1988-10-03 1990-01-02 Robertshaw Controls Company Engine cooling system, structure therefor and methods of making the same
US4961530A (en) * 1988-10-03 1990-10-09 Robert Shaw Controls Company Engine cooling system, structure therefor and methods of making the same
DE4042404A1 (de) * 1990-07-17 1992-11-05 Eberspaecher J Mit einem heizgeraet versehener kuehlmittelkreislauf eines fahrzeugmotors
DE4022731A1 (de) * 1990-07-17 1992-01-23 Eberspaecher J Mit einem heizgeraet versehener kuehlmittelkreislauf eines fahrzeugmotors
DE4106081A1 (de) * 1991-01-08 1992-07-09 Behr Thomson Dehnstoffregler Thermostatventil zur regelung der temperatur der kuehlfluessigkeit einer brennkraftmaschine, insbesondere eines kraftfahrzeugmotors
DE9102294U1 (de) * 1991-02-27 1992-06-25 Behr-Thomson Dehnstoffregler GmbH & Co, 7014 Kornwestheim Thermostatventil
DE4139328A1 (de) * 1991-11-29 1993-06-03 Behr Thomson Dehnstoffregler Ringschieberthermostateinsatz
JP2580298Y2 (ja) * 1991-12-16 1998-09-03 マツダ株式会社 内燃機関のサーモスタット装置
DE4330215A1 (de) * 1993-09-07 1995-03-09 Behr Thomson Dehnstoffregler Kühlanlage für einen Verbrennungsmotor eines Kraftfahrzeuges mit einem Ventil
US5657722A (en) * 1996-01-30 1997-08-19 Thomas J. Hollis System for maintaining engine oil at a desired temperature
DE19725222A1 (de) * 1997-06-15 1998-12-17 Behr Thermot Tronik Gmbh & Co Thermostatventil
DE19728009C2 (de) * 1997-07-01 2003-10-02 Itw Henschel Gmbh Thermostatventil zur Regelung der Temperatur eines Kühlmittels in einem Kühlsystem einer Verbrennungskraftmaschine
DE19728814A1 (de) * 1997-07-05 1999-01-07 Behr Thermot Tronik Gmbh & Co Kühlanlage für einen Verbrennungsmotor eines Kraftfahrzeuges
US6634322B2 (en) 2001-04-12 2003-10-21 Cold Fire, Llc Heat exchanger tempering valve
US6764020B1 (en) 2003-02-28 2004-07-20 Standard-Thomson Corporation Thermostat apparatus for use with temperature control system
FR2856161B1 (fr) * 2003-06-11 2007-02-16 Vernet Sa Vanne thermostatique pour un circuit de circulation de fluide et moteur thermique associe a un circuit de refroidissement comportant une telle vanne
JP4561546B2 (ja) * 2005-09-08 2010-10-13 トヨタ自動車株式会社 内燃機関の冷却装置
DE102013223907A1 (de) 2013-11-22 2015-06-11 Volkswagen Aktiengesellschaft Stellmittel für einen Kühlmittelkreislauf sowie ein mit einem solchen Stellmittel ausgestattetes Kraftfahrzeug

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1438067A (en) * 1917-04-12 1922-12-05 Springer Eranklin Wesley Cooling and heating system for internal-combustion engines
US2701102A (en) * 1950-09-25 1955-02-01 Arthur H Albrecht Heating system and thermostat for use with internal-combustion engines
DE1451669A1 (de) * 1963-06-20 1970-02-12 Daimler Benz Ag Thermostat fuer verschieden hohe OEffnungstemperaturen bzw. OEffnungshuebe,insbesondere an Kraftfahrzeug-Brennkraftmaschinen
DE2040214A1 (de) * 1969-10-06 1971-04-15 Robur Werke Lastkraftwagen Und Verfahren zur Vermeidung des UEberschwingens der Temperatur luftgekuehlter temperaturgeregelter Brennkraftmaschinen sowie Vorrichtung zur Durchfuehrung des Verfahrens
US4311271A (en) * 1980-05-29 1982-01-19 Naqvi Zargham H Controller for maintaining a constant temperature of discharged liquid
GB2081845A (en) * 1980-05-29 1982-02-24 Trucktonics Ltd Control valve

Family Cites Families (12)

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US2377028A (en) * 1943-10-29 1945-05-29 John Reiner & Company Cooling system and thermostatically controlled by-pass valve
US2401646A (en) * 1945-02-28 1946-06-04 Johnson John Frank Temperature control for cooling fluid of internal-combustion engines
GB695730A (en) * 1949-11-28 1953-08-19 Daimler Benz Ag Improvements relating to temperature regulations in internal combustion engines
DE861937C (de) * 1949-11-29 1953-01-08 Daimler Benz Ag Vorrichtung zur Temperaturregelung an Brennkraftmaschinen
US2833478A (en) * 1955-06-09 1958-05-06 George W Middleton Thermostatic control of water cooling system of motor vehicle
US2881616A (en) * 1956-06-20 1959-04-14 Gen Motors Corp Thermostatic power elements
FR1401314A (fr) * 1964-04-20 1965-06-04 Chausson Usines Sa Dispositif régulateur de la température du liquide dans les circuits de refroidissement des moteurs de véhicules
US4175697A (en) * 1977-09-01 1979-11-27 Emerson Electric Co. (H&H Precision Products Div.) Thermally actuated phase change operated control valve for use in an energy conservation system
DE2943091A1 (de) * 1979-10-25 1981-05-14 Klöckner-Humboldt-Deutz AG, 5000 Köln Fluessigkeitskuehlsystem einer brennkraftmaschine
US4325508A (en) * 1980-04-02 1982-04-20 Emerson Electric Co. Thermostatic expansion valve with remote adjustment
GB2086536A (en) * 1980-10-28 1982-05-12 Ford Motor Co Thermostat assembly
US4347973A (en) * 1981-01-21 1982-09-07 Robertshaw Controls Company Internal combustion engine coolant system, thermostat therefor and methods of making the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1438067A (en) * 1917-04-12 1922-12-05 Springer Eranklin Wesley Cooling and heating system for internal-combustion engines
US2701102A (en) * 1950-09-25 1955-02-01 Arthur H Albrecht Heating system and thermostat for use with internal-combustion engines
DE1451669A1 (de) * 1963-06-20 1970-02-12 Daimler Benz Ag Thermostat fuer verschieden hohe OEffnungstemperaturen bzw. OEffnungshuebe,insbesondere an Kraftfahrzeug-Brennkraftmaschinen
DE2040214A1 (de) * 1969-10-06 1971-04-15 Robur Werke Lastkraftwagen Und Verfahren zur Vermeidung des UEberschwingens der Temperatur luftgekuehlter temperaturgeregelter Brennkraftmaschinen sowie Vorrichtung zur Durchfuehrung des Verfahrens
US4311271A (en) * 1980-05-29 1982-01-19 Naqvi Zargham H Controller for maintaining a constant temperature of discharged liquid
GB2081845A (en) * 1980-05-29 1982-02-24 Trucktonics Ltd Control valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0128365A3 (en) * 1983-06-04 1985-07-31 Behr-Thomson Dehnstoffregler Gmbh Cooling device for an internal-combustion engine
FR2577278A1 (fr) * 1985-02-12 1986-08-14 Behr Thomson Dehnstoffregler Robinet a soupape thermostatique pour la regulation de la temperature du liquide de refroidissement d'un moteur a combustion interne
EP0272117A3 (fr) * 1986-12-19 1989-04-19 Adwest Group PLC Système de commande thermostatique
EP2333269A3 (fr) * 2009-09-15 2014-01-08 Behr Thermot-tronik GmbH Soupape à plusieurs voies dotée d'une perte de pression réduite

Also Published As

Publication number Publication date
DE3226104A1 (de) 1984-01-26
DE3368723D1 (en) 1987-02-05
JPS5923028A (ja) 1984-02-06
US4522334A (en) 1985-06-11
EP0098979B1 (fr) 1986-12-30
DE3226104C2 (de) 1985-02-07

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