EP0644320A1 - Dispositif de refroidissement pour moteur à combustion interne refroidi par liquide d'un véhicule automobile - Google Patents

Dispositif de refroidissement pour moteur à combustion interne refroidi par liquide d'un véhicule automobile Download PDF

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Publication number
EP0644320A1
EP0644320A1 EP94108812A EP94108812A EP0644320A1 EP 0644320 A1 EP0644320 A1 EP 0644320A1 EP 94108812 A EP94108812 A EP 94108812A EP 94108812 A EP94108812 A EP 94108812A EP 0644320 A1 EP0644320 A1 EP 0644320A1
Authority
EP
European Patent Office
Prior art keywords
internal combustion
combustion engine
coolant
cooler
cooling device
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
EP94108812A
Other languages
German (de)
English (en)
Other versions
EP0644320B1 (fr
Inventor
Günter Ranzinger
Joachim Fröschl
Gerhart Huemer
Hans Hohenner
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 EP0644320A1 publication Critical patent/EP0644320A1/fr
Application granted granted Critical
Publication of EP0644320B1 publication Critical patent/EP0644320B1/fr
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
    • F01P11/0285—Venting devices
    • 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
    • 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
    • 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
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • F01P2025/13—Ambient 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
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • F01P2025/32—Engine outcoming fluid 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
    • F01P2070/00—Details
    • F01P2070/04—Details using electrical heating elements

Definitions

  • the invention relates to a cooling device for a liquid-cooled internal combustion engine of a motor vehicle with a cooler connected to the supply and return line of the internal combustion engine.
  • Such a cooling device is known for example from EP 0 184 196 B1.
  • This known device additionally contains a secondary flow return line from the expansion tank provided with the filling opening, bypassing the thermostat, to the connection of the return line to the internal combustion engine.
  • the coolant is filled through the filler opening and distributed over the bypass return line bypassing the thermostat in the internal combustion engine. From the internal combustion engine, the coolant flows into the cooler via the supply line. Since the line cross-sections are designed according to the requirements of the operation of the cooling system, the filling process is time-consuming, since the secondary flow return line generally has a smaller diameter than the flow and return line and at the same time the temperature-controlled thermostatic valve the coolant flows through the short circuit between the supply and return lines and not through the cooler.
  • the internal combustion engine In order to ensure that no significant air pockets remain in the cooling system after filling, the internal combustion engine is operated for a while at idle with the filler opening open. Due to improvements in consumption and emissions, the cooling system is designed for a higher operating pressure than the ambient pressure, since the coolant only begins to boil at elevated temperatures. The opening temperature of the thermostat is designed accordingly. If, after filling, the internal combustion engine is operated with the cooling system open, the temperature-controlled thermostat does not respond, or responds only very slightly, when the boiling temperature of the coolant, which occurs at ambient pressure, is reached. It can therefore come to overheating of the internal combustion engine while the cooler is idling with the filler opening open, since the thermostatic valve essentially does not lead the coolant through the cooler, but through the short circuit, due to the temperature being too low.
  • the temperature-controlled thermostatic valve can be controlled by electrical heating.
  • the electrical heating is by actuation a switch can be activated, which is attached to the filling opening.
  • the electrical heating of the thermostatic valve simulates a high temperature of the coolant, as a result of which the thermostatic valve does not lead the coolant through the short circuit between the supply and return lines, as is usually the case when the internal combustion engine is warming up, but at least partially, but preferably completely, through the cooler.
  • the electrical switch can either be switched during the entire filling process or, if necessary, arbitrarily by manual operation. With this cooling device according to the invention, a rapid filling of the cooler with coolant is also possible, since the boiling temperature of the coolant is prevented by the arbitrary opening of the thermostat towards the cooler and, at the same time, air pockets escape faster through the improved coolant flow.
  • the electrical switch on the filling opening is actuated by removing the cover from the filling opening.
  • the switch can be removed by completely removing the lid from the filling opening or by a movement of the lid deviating from the usual rotary movement of the lid during the removal process of the lid, e.g. B. pushing or pulling.
  • the thermostatic valve can be heated either automatically by removing the cover or arbitrarily for a certain time before removing the cover, as required. This is a particularly simple procedure to arbitrarily trigger cooling of the coolant.
  • a further advantageous embodiment of the invention is the subject of claim 3.
  • the actuation of the switch causes the switch to close in order to close a circuit for electrically heating the thermostatic valve directly via this switch.
  • This further development according to the invention is a particularly simple and inexpensive device for triggering an arbitrary heating of the thermostatic valve.
  • the cooling device for an internal combustion engine 10 shown in FIG. 1 contains a cooler 11. Between the internal combustion engine 10 and the cooler 11 there is a coolant pump 12 which generates a flow of the coolant in the direction shown by the arrows.
  • a feed line 13 leads from the coolant outlet of the internal combustion engine 10 to the coolant inlet of the cooler 11.
  • a return line 14 leads from the coolant outlet of the cooler 11 to the coolant inlet of the internal combustion engine 10.
  • a thermostatic valve 15, for example with an expansion element (not shown here), is arranged in the return line 14.
  • a short-circuit line 16 branches off from the flow line 13 to the thermostatic valve 15.
  • the cooling device essentially operates in three modes.
  • a first mode of operation the so-called warm-up mode, in particular after the cold start of the internal combustion engine 10, the thermostatic valve 15 is set such that the coolant flow coming from the internal combustion engine 10 is essentially completely returned to the internal combustion engine 10 via the short-circuit line 16.
  • the cooling system works in mixed mode, i. H. the coolant coming from the internal combustion engine 10 runs partly through the cooler 11 and partly via the short-circuit line 16 back to the internal combustion engine 10.
  • the cooling system operates in the cooler mode, i. H. the coolant coming from the internal combustion engine 10 is essentially completely returned to the internal combustion engine 10 through the cooler 11.
  • the mode of operation of the cooling device can be adjusted by heating the thermostatic valve 15, that is to say, for example, by heating the expansion element, via an electrical line 17 in the direction of the cooler operation, or it can be switched completely to cooler operation. This reduces the temperature level of the coolant compared to the temperature level achieved with an operating mode without heating the thermostatic valve 15.
  • the supply of the thermostatic valve 15 with electrical energy via the line 17 is initiated, for example, by a control unit 18 which receives and evaluates several signals of operating variables.
  • a temperature sensor 19, which detects the actual temperature of the coolant and transmits it to the control unit 18, is usually arranged at the coolant outlet of the internal combustion engine 10.
  • a temperature sensor 20 can also be arranged, which detects the temperature of the intake air and passes it on to the control unit 18.
  • the control device is preferably 18 integrated in a known electronic engine control 21.
  • the thermostatic valve 15 is electrically heated via the line 17, which is connected to the output of the control device 18, as a function of temperature values and other operating variables of the internal combustion engine.
  • the possibility of electrically heating the thermostatic valve 15 is used according to the invention in order to enable the cooler to be filled quickly by preventing the coolant from overheating and by improving the coolant flow.
  • the output of a controllable switch SS of the control device 18 is connected to the thermostatic valve 15 via the electrical line 17, the electrical line 17 being connected to a positive voltage U+.
  • the thermostatic valve 15 is connected in a conventional manner to the short-circuit line 16 and the return line 14 and is controlled via the electrical line 17 (cf. FIG. 1).
  • the electrical line 17 is additionally connected to one pole of a switch S, the other pole of the switch S being connected to ground.
  • the electrical switch S is attached to the fill opening E of an expansion tank A of the cooler 11.
  • the electrical line 17 is connected to ground as required by the control device 18 with the controllable switch SS. If the circuit between the positive voltage U+ and the ground connection of the controllable switch SS is closed, the thermostatic valve is heated, which causes the cooling device to operate is shifted in the direction of the cooler operation.
  • the circuit between the positive voltage U+ and ground can also be closed by the electrical switch S.
  • the electrical switch S When the cover D in the filling opening E is closed, the electrical switch S is opened, whereas when the cover D is removed from the filling opening E, the electrical switch S is closed and the thermostatic valve 15 is thus automatically heated.
  • the cover D with a locking device V, by means of which the cover D engages in a predetermined position when it is opened, after which the cover D can only be rotated further when it has been pressed down.
  • the electrical switch S is not permanently closed when the cover D is completely open, but only for the time during which the cover D is pressed down.
  • the ventilation run can thus be carried out while the cooler 11 is being filled with coolant, with the cover D closed, since opening the cover D always causes the coolant to cool down quickly by pressing down the cover D and, at the same time, prevents the coolant from boiling out.
  • the cooler not only can the cooler be filled more quickly, but also the safety of the person who carries out the filling is ensured.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Temperature-Responsive Valves (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
EP94108812A 1993-09-22 1994-06-08 Dispositif de refroidissement pour moteur à combustion interne refroidi par liquide d'un véhicule automobile Expired - Lifetime EP0644320B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4332101 1993-09-22
DE4332101A DE4332101B4 (de) 1993-09-22 1993-09-22 Kühlvorrichtung für einen flüssigkeitsgekühlten Verbrennungsmotor eines Kraftfahrzeuges

Publications (2)

Publication Number Publication Date
EP0644320A1 true EP0644320A1 (fr) 1995-03-22
EP0644320B1 EP0644320B1 (fr) 1997-03-12

Family

ID=6498233

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94108812A Expired - Lifetime EP0644320B1 (fr) 1993-09-22 1994-06-08 Dispositif de refroidissement pour moteur à combustion interne refroidi par liquide d'un véhicule automobile

Country Status (4)

Country Link
US (1) US5477816A (fr)
EP (1) EP0644320B1 (fr)
JP (1) JP2688565B2 (fr)
DE (2) DE4332101B4 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0688942A1 (fr) * 1994-06-24 1995-12-27 Bayerische Motoren Werke Aktiengesellschaft Dispositif de refroidissement pour moteur à combustion interne refroidi par liquide d'un véhicule automobile
EP0727570A1 (fr) * 1995-02-14 1996-08-21 Bayerische Motoren Werke Aktiengesellschaft Dispositif de régulation de la température du système de refroidissement d'un moteur à combustion interne
WO2014080278A3 (fr) * 2012-11-20 2014-07-24 Toyota Jidosha Kabushiki Kaisha Appareil de refroidisseur et procédé de commande pour celui-ci

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10215262B4 (de) * 2002-04-06 2014-12-31 Daimler Ag Kühlsystem, insbesondere für einen Kraftfahrzeugmotor mit indirekter Ladeluftkühlung
GB2536249B (en) 2015-03-10 2017-11-08 Jaguar Land Rover Ltd Controller for a motor vehicle cooling system and method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1470304A (en) * 1922-10-14 1923-10-09 Harry A Tuckey Electrical contact device
FR2314752A1 (fr) * 1975-06-19 1977-01-14 Chausson Usines Sa Dispositif pour le degazage de circuits contenant un liquide de circulation
GB2155153A (en) * 1984-02-24 1985-09-18 Gilardini Spa Thermostat unit for the cooling circuit on a motor vehicle engine
EP0215219A2 (fr) * 1985-09-17 1987-03-25 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Aménagement de refroidissement pour moteurs à combustion interne avec un ventilateur déclenchable
GB2198809A (en) * 1986-12-16 1988-06-22 Leslie Blake Thermostat

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE419037C (de) * 1925-09-18 Frau Hedda Bechtle Bechtinger Fahrtrichtungsanzeiger
FR2456838A1 (fr) * 1979-05-18 1980-12-12 Sev Marchal Vanne a action thermostatique destinee a un circuit de refroidissement de moteur a combustion interne
DE3444273C1 (de) * 1984-12-05 1985-11-28 Bayerische Motoren Werke AG, 8000 München Aus Kunststoff hergestellter Wasserkasten fuer einen Querstrom-Kuehler fuer Brennkraftmaschinen
US4875437A (en) * 1987-12-03 1989-10-24 Procedes Vernet Apparatus for controlling the flow of cooling fluid in an engine
DE4022731A1 (de) * 1990-07-17 1992-01-23 Eberspaecher J Mit einem heizgeraet versehener kuehlmittelkreislauf eines fahrzeugmotors
DE4042404A1 (de) * 1990-07-17 1992-11-05 Eberspaecher J Mit einem heizgeraet versehener kuehlmittelkreislauf eines fahrzeugmotors
DE4035179A1 (de) * 1990-11-06 1992-05-07 Wahler Gmbh & Co Gustav Thermostatventil zur regelung der temperatur der kuehlfluessigkeit einer brennkraftmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1470304A (en) * 1922-10-14 1923-10-09 Harry A Tuckey Electrical contact device
FR2314752A1 (fr) * 1975-06-19 1977-01-14 Chausson Usines Sa Dispositif pour le degazage de circuits contenant un liquide de circulation
GB2155153A (en) * 1984-02-24 1985-09-18 Gilardini Spa Thermostat unit for the cooling circuit on a motor vehicle engine
EP0215219A2 (fr) * 1985-09-17 1987-03-25 Dr.Ing.h.c. F. Porsche Aktiengesellschaft Aménagement de refroidissement pour moteurs à combustion interne avec un ventilateur déclenchable
GB2198809A (en) * 1986-12-16 1988-06-22 Leslie Blake Thermostat

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0688942A1 (fr) * 1994-06-24 1995-12-27 Bayerische Motoren Werke Aktiengesellschaft Dispositif de refroidissement pour moteur à combustion interne refroidi par liquide d'un véhicule automobile
US5572958A (en) * 1994-06-24 1996-11-12 Bayerische Motoren Werke Ag Cooling arrangement for a liquid-cooled motor vehicle internal-combustion engine
EP0727570A1 (fr) * 1995-02-14 1996-08-21 Bayerische Motoren Werke Aktiengesellschaft Dispositif de régulation de la température du système de refroidissement d'un moteur à combustion interne
US5692460A (en) * 1995-02-14 1997-12-02 Bayerische Motoren Werke Aktiengesellschaft Coolant temperature control system for an internal-combustion engine
WO2014080278A3 (fr) * 2012-11-20 2014-07-24 Toyota Jidosha Kabushiki Kaisha Appareil de refroidisseur et procédé de commande pour celui-ci
US9581076B2 (en) 2012-11-20 2017-02-28 Toyota Jidosha Kabushiki Kaisha Cooler apparatus and control method therefor

Also Published As

Publication number Publication date
EP0644320B1 (fr) 1997-03-12
DE4332101A1 (de) 1995-03-23
DE4332101B4 (de) 2005-09-15
JPH07305628A (ja) 1995-11-21
JP2688565B2 (ja) 1997-12-10
DE59402026D1 (de) 1997-04-17
US5477816A (en) 1995-12-26

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