EP0189575B1 - Control device for the cooling air of an air-water-cooled internal-combustion engine, especially for motor vehicles - Google Patents

Control device for the cooling air of an air-water-cooled internal-combustion engine, especially for motor vehicles Download PDF

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Publication number
EP0189575B1
EP0189575B1 EP85116060A EP85116060A EP0189575B1 EP 0189575 B1 EP0189575 B1 EP 0189575B1 EP 85116060 A EP85116060 A EP 85116060A EP 85116060 A EP85116060 A EP 85116060A EP 0189575 B1 EP0189575 B1 EP 0189575B1
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EP
European Patent Office
Prior art keywords
closure member
cooling air
fan
roller curtain
air
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
Application number
EP85116060A
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German (de)
French (fr)
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EP0189575A1 (en
Inventor
Axel Temmesfeld
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
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Bayerische Motoren Werke AG
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Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0189575A1 publication Critical patent/EP0189575A1/en
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Publication of EP0189575B1 publication Critical patent/EP0189575B1/en
Expired legal-status Critical Current

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    • 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
    • F01P11/10—Guiding or ducting cooling-air, to, or from, liquid-to-air heat exchangers
    • 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
    • F01P7/02—Controlling of coolant flow the coolant being cooling-air
    • F01P7/10—Controlling of coolant flow the coolant being cooling-air by throttling amount of air flowing through liquid-to-air heat exchangers
    • F01P7/12—Controlling of coolant flow the coolant being cooling-air by throttling amount of air flowing through liquid-to-air heat exchangers by thermostatic control

Definitions

  • the invention relates to a control device of the type with the features of the preamble of claim 1.
  • a known device of this type according to US-A 1 170 730 has a closure member designed as a flap blind or rotary slide valve and a radiator fan exposed at a distance therefrom in the direction of cooling air flow.
  • the closure member thereby controls the cooling effect of the cooler.
  • the closure member, the radiator fan and the machine are arranged in an open arrangement one behind the other in the cooling air flow direction. Noise from the cooler fan, the machine and its drive connections as well as the heat dissipation of the machine and the cooler can spread on all sides and thereby burden the environment on the one hand and extend the warming up time after the cold start of the machine on the other.
  • DE-C-3 414 609 relates to a device of the type described at the outset, which has pivotable guide vanes for an axial fan as a closure member, which interact with its impeller for the purpose of higher delivery capacity, and in the opposite direction to the position of the guide vanes a closure part for an air outlet opening between the cooler and the axial fan can be actuated.
  • the object of the invention is to develop the control device of the type mentioned at the outset in such a way that the noise and heat radiation from the machine and the radiator fan are reduced.
  • the invention provides the characterizing features of claim 1.
  • the noise and heat radiation when the closure member is closed from a largely sealed sound capsule on all sides when the machine is cold and under part-load operation and thus can be considerably reduced when the noise generation is particularly high, particularly in diesel engines, and high thermal insulation for low wear and low fuel consumption and low emissions of exhaust gas pollutants due to a short warm-up time is particularly advantageous.
  • Due to the additional cooling air outlet opening the noise-reducing effect of the closure element extends beyond the warming-up time of the machine to operating times in which the cooling air delivery is sufficient without the cooler fan, in particular, therefore, at partial load and low ambient temperature.
  • a preferred construction of the closure member contain the features of claim 3, which enable a high sealing effect and smaller dimensions than that of the cooler.
  • the training with the features of claim 5 ensures the function of the device at partial load without special control effort by means of a backflow valve.
  • the operating temperature of the machine can be determined in the usual way with the closure member closed by means of a thermostat regulating the coolant temperature. After the given cooling capacity has been exhausted, the closure member can then be opened by means of a temperature switch controlled by the coolant temperature, by a component temperature of the machine and / or by the air temperature in the engine compartment and, if necessary, the radiator fan can be put into operation together will. Then there is the full cooling capacity and engine compartment ventilation function of conventional radiator-fan arrangements with fan frame and engine compartment noise capsule.
  • an air Liquid cooler 3 In the front part 1 of a motor vehicle, in the cooling air flow direction 2, an air Liquid cooler 3, a closure member for the cooling air designed as a roller blind 4 with a support grid 5, a cooler fan 6 and an internal combustion engine 7.
  • a fan frame 9 connects to the cooling air outlet 8 of the cooler 3 and ends in the cooling air flow direction 2 in a frame ring 10, which surrounds the outer circumference of the fan 6 with a narrow annular gap 11 that is largely free of backflow when the roller blind 4 is closed and thus avoids drive power.
  • the support grille 5 passing through the fan frame 9 is arranged, with which the roller curtain 4 for largely airtight exclusion of a cooling air flow to the fan 6 and thus into the engine compartment 12 and a noise radiation in the opposite direction cooperates from the engine compartment 12 and through the radiator 3 to the environment.
  • the engine compartment 12 is further designed for the latter purpose as a known noise capsule in a manner not shown.
  • the roller blind 4 has a winding roller 13 above the frame ring 10. At least one lower cooling air outlet opening 14 with a backflow flap 15, which opens out into the open, is arranged in the fan frame 9 between the cooler 3 and the rolling curtain 4 or the support grid 5, which enables the cooling effect 3 of the cooler 3 for partial load operation of the machine 7 when the rolling curtain 4 is closed.
  • the warm cooling air flow from the cooler 3 protects the roller blind 4 from freezing and thus ensures its automatically controllable opening when a predetermined operating state of the machine 7 is reached, such as high values of the ambient temperature, the engine compartment temperature, a component temperature, the engine power and / or the coolant temperature.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

Beschreibung (FR, GB. IT, SE)Description (FR, GB. IT, SE)

Die Erfindung betrifft eine Steuervorrichtung der Bauart mit den Merkmalen des Oberbegriffes des Anspruches 1.The invention relates to a control device of the type with the features of the preamble of claim 1.

Eine bekannte Vorrichtung dieser Bauart nach US-A 1 170 730 weist ein als Klappen-Jalousie oder Drehschieber ausgebildetes Verschlußorgan und einen in Kühlluft-Strömungsrichtung im Abstand dahinter freiliegenden Kühler-Lüfter auf. Das Verschlußorgan steuert dadurch die Kühlwirkung des Kühlers. Zur Minderung der Kühlfunktion des Kühler-Lüfters selbst ist dieser mit verstellbaren Lüfterflügeln ausgestattet. Das Verschlußorgan, der Kühler-Lüfter und die Maschine sind in offener Anordnung in Kühlluft-Strömungsrichtung mit Abstand hintereinander angeordnet. Geräusche des Kühler-Lüfters, der Maschine und deren Antriebsverbindungen sowie die Wärmeableitung der Maschine und des Kühlers können sich allseits ausbreiten und dadurch einerseits die Umwelt belasten und andererseits die Anwärmzeit nach dem Kaltstart der Maschine verlängern.A known device of this type according to US-A 1 170 730 has a closure member designed as a flap blind or rotary slide valve and a radiator fan exposed at a distance therefrom in the direction of cooling air flow. The closure member thereby controls the cooling effect of the cooler. To reduce the cooling function of the cooler fan itself, it is equipped with adjustable fan blades. The closure member, the radiator fan and the machine are arranged in an open arrangement one behind the other in the cooling air flow direction. Noise from the cooler fan, the machine and its drive connections as well as the heat dissipation of the machine and the cooler can spread on all sides and thereby burden the environment on the one hand and extend the warming up time after the cold start of the machine on the other.

Durch die US-A-2703075 ist eine Vorrichtung ähnlicher Bauart bekannt, bei der jedoch im radial äußeren Bereich des kreisförmigen Verschlußorgans zusätzliche, bei geschlossenem Verschlußorgan offene Verbindungsöffnungen zwischen dem Kühlluft-Austritt des Kühlers und dem Maschinengehäuse bzw. Motorraum angeordnet sind. In letzterem auftretende Geräusche können durch die genannten Öffnungen und durch den Kühler auch bei geschlossenem Verschlußorgan nach außen dringen.From US-A-2703075 a device of a similar type is known, in which, however, in the radially outer region of the circular closure member additional connection openings, which are open when the closure member is closed, are arranged between the cooling air outlet of the cooler and the machine housing or engine compartment. Noises occurring in the latter can penetrate through the openings mentioned and through the cooler even when the closure member is closed.

Durch die DE-C-53 27 30 ist ein als Doppelvorhang ausgebildetes Verschlußorgan für den Kühler bekannt, das die Wärmeabstrahlung des Kühlers nach beiden Seiten verringert, jedoch die Geräusch- und Wärmeabstrahlung des Kühler-Lüfters und der Maschine nicht beeinflußt.From DE-C-53 27 30 a double curtain closure member for the cooler is known, which reduces the heat radiation of the cooler on both sides, but does not affect the noise and heat radiation of the cooler fan and the machine.

Die Pateintinhaberin hat sich unter Bezug auf die ältere, nicht vorveröffentlichte DE-C-3 414 609 freiwillig eingeschränkt und gesonderte Patentansprüche für Deutschland erstellt. Die DE-C-3 414 609 bezieht sich auf eine Vorrichtung der eingangs beschriebenen Bauart, die als Verschlußorgan schwenkbare Leitschaufeln für ein Axialgebläse aufweist, die mit dessen Laufrad zum Zweck einer höheren Förderleistung zusammenwirken, und bei der gegensinnig zur Stellung der Leitschaufeln ein Verschlußteil für eine Luftaustrittsöffnung zwischen Kühler und Axialgebläse betätigt werden kann.The owner of the patent voluntarily restricted himself with reference to the older, unpublished DE-C-3 414 609 and created separate claims for Germany. DE-C-3 414 609 relates to a device of the type described at the outset, which has pivotable guide vanes for an axial fan as a closure member, which interact with its impeller for the purpose of higher delivery capacity, and in the opposite direction to the position of the guide vanes a closure part for an air outlet opening between the cooler and the axial fan can be actuated.

Aufgabe der Erfindung ist es, die Steuervorrichtung der eingangs genannten Bauart so weiterzubilden, daß die Geräusch- und Wärmeabstrahlung der Maschine und des Kühlerlüfters verringert werden.The object of the invention is to develop the control device of the type mentioned at the outset in such a way that the noise and heat radiation from the machine and the radiator fan are reduced.

Zur Lösung dieser Aufgabe sieht die Erfindung die kennzeichnenden Merkmale des Anspruches 1 vor. Dadurch ist die Geräusch- und Wärmeabstrahlung bei geschlossenem Verschlußorgan aus einer nach allen Seiten weitgehend dichten Geräusch-Kapsel bei kalter und bei mit Teillast betriebener Maschine und damit gerade dann erheblich verringerbar, wenn die Geräuschbildung insbesondere bei Dieselmaschinen besonders hoch und eine hohe Wärmedämmung für geringen Verschleiß sowie geringen Kraftstoffverbrauch und geringen Ausstoß von Abgas-Schadstoffen durch eine kurze Anwärmzeit besonders vorteilhaft ist. Die geräuschdämmende Wirkung des Verschlußorgans erstreckt sich aufgrund der weiteren Kühlluft-Austrittsöffnung über die Anwärmzeit der Maschine hinaus auch auf Betriebszeiten, in denen die Kühlluft-Förderung ohne den Kühler-Lüfter ausreicht, insbesondere also bei Teillast und niedriger Umgebungstemperatur.To achieve this object, the invention provides the characterizing features of claim 1. As a result, the noise and heat radiation when the closure member is closed from a largely sealed sound capsule on all sides when the machine is cold and under part-load operation, and thus can be considerably reduced when the noise generation is particularly high, particularly in diesel engines, and high thermal insulation for low wear and low fuel consumption and low emissions of exhaust gas pollutants due to a short warm-up time is particularly advantageous. Due to the additional cooling air outlet opening, the noise-reducing effect of the closure element extends beyond the warming-up time of the machine to operating times in which the cooling air delivery is sufficient without the cooler fan, in particular, therefore, at partial load and low ambient temperature.

Durch die Merkmale des Anspruches 2 wird bei geschlossenem Verschlußorgan eine weitgehende Null-Förderleistung des Lüfters erreicht, sodaß hierfür trotz starrer Antriebsverbindung mit der Maschine kaum Antriebsleistung erforderlich ist und sich daher der Bauaufwand einer Lüfter-Kupplung oder eines elektrischen Lüfter-Motors erübrigt.By means of the features of claim 2, a largely zero delivery capacity of the fan is achieved when the closure member is closed, so that despite the rigid drive connection to the machine, hardly any drive power is required and the construction of a fan clutch or an electric fan motor is therefore unnecessary.

Eine bevorzugte bauliche Ausbildung des Verschlußorgans enthalten die Merkmale des Anspruches 3, die eine hohe Dichtwirkung und geringere Abmessungen als die des Kühlers ermöglichen.A preferred construction of the closure member contain the features of claim 3, which enable a high sealing effect and smaller dimensions than that of the cooler.

Die Weiterbildung nach den Merkmalen des Anspruches 4 ermöglicht eine geringe Baulänge und zugleich eine Steuerung zusätzlicher Stauluft-Öffnungen mittels des Rollvorhanges.The development according to the features of claim 4 enables a small overall length and at the same time a control of additional ram air openings by means of the roller blind.

Die Ausbildung mit den Merkmalen des Anspruches 5 gewährleistet die Funktion der Vorrichtung bei Teillast ohne besonderen Steuerungsaufwand mittels einer Rückstromklappe.The training with the features of claim 5 ensures the function of the device at partial load without special control effort by means of a backflow valve.

Die Betriebstemperatur der Maschine kann dabei bei geschlossenem Verschlußorgan in üblicher Weise mittels eines die Kühlflüssigkeits-Temperatur regelnden Thermostats bestimmt werden. Nach Ausschöpfung der dabei gegebenen Kühlleistung kann dann mittels eines von der Kühlflüssigkeits-Temperatur, von einer Bauteil-Temperatur der Maschine und/oder von der Luft-Temperatur im Motorraum angesteuerten Temperatur-Schalters das Verschlußorgan geöffnet und gegebenenfalls gemeinsam der Kühler-Lüfter in Betrieb gesetzt werden. Dabei besteht dann die volle Kühlleistungs- und Motorraum-Durchlüftungs-Funktion üblicher Kühler-Lüfter-Anordnungen mit Lüfterzarge und Motorraum-Geräusch-Kapsel.The operating temperature of the machine can be determined in the usual way with the closure member closed by means of a thermostat regulating the coolant temperature. After the given cooling capacity has been exhausted, the closure member can then be opened by means of a temperature switch controlled by the coolant temperature, by a component temperature of the machine and / or by the air temperature in the engine compartment and, if necessary, the radiator fan can be put into operation together will. Then there is the full cooling capacity and engine compartment ventilation function of conventional radiator-fan arrangements with fan frame and engine compartment noise capsule.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigen :

  • Fig. 1 einen Teillängsschnitt durch den Vorderteil eines Kraftfahrzeuges mit einer erfindungsgemäßen Steuervorrichtung für die Kühlluft zum Kühler und zum Motorraum und
  • Fig. 2 die Teil-Draufsicht auf die Steuervorrichtung nach der Linie 11-11 in Figur 1.
In the drawing, an embodiment of the invention is shown. Show it :
  • Fig. 1 shows a partial longitudinal section through the front part of a motor vehicle with a control device according to the invention for the cooling air to the radiator and the engine compartment and
  • 2 shows the partial top view of the control device along the line 11-11 in FIG. 1.

Im Vorderteil 1 eines Kraftfahrzeuges sind in Kühlluft-Strömungsrichtung 2 hintereinander ein Luft-Flüssigkeits-Kühler 3, ein als Rollvorhang 4 mit Abstützgitter 5 ausgebildetes Verschlußorgan für die Kühlluft, ein Kühler-Lüfter 6 und eine Brennkraftmaschine 7 angeordnet. An den Kühlluft-Austritt 8 des Kühlers 3 schließt eine Lüfterzarge 9 an und endet in Kühlluft-Strömungsrichtung 2 in einem Zargenring 10, der den Außenumfang des Lüfters 6 mit einem engen, bei geschlossenem Rollvorhang 4 weitestgehend rückstromfreien und somit Antriebsleistung vermeidenden Ringspalt 11 umschließt.In the front part 1 of a motor vehicle, in the cooling air flow direction 2, an air Liquid cooler 3, a closure member for the cooling air designed as a roller blind 4 with a support grid 5, a cooler fan 6 and an internal combustion engine 7. A fan frame 9 connects to the cooling air outlet 8 of the cooler 3 and ends in the cooling air flow direction 2 in a frame ring 10, which surrounds the outer circumference of the fan 6 with a narrow annular gap 11 that is largely free of backflow when the roller blind 4 is closed and thus avoids drive power.

In Kühlluft-Strömungsrichtung 2 gesehen raumsparend unmittelbar vor dem Zargenring 10 ist das die Lüfterzarge 9 durchsetzende Abstützgitter 5 angeordnet, mit dem der Rollvorhang 4 für einen weitestgehend luftdichten Ausschluß einer Kühlluftströmung zum Lüfter 6 und damit in den Motorraum 12 sowie einer Geräusch-Abstrahlung in Gegenrichtung aus dem Motorraum 12 und durch den Kühler 3 zur Umgebung zusammenwirkt. Der Motorraum 12 ist zu letzterem Zweck ferner als bekannte Geräusch-Kapsel in nicht dargestellter Weise ausgebildet.Seen in the cooling air flow direction 2 space-saving directly in front of the frame ring 10, the support grille 5 passing through the fan frame 9 is arranged, with which the roller curtain 4 for largely airtight exclusion of a cooling air flow to the fan 6 and thus into the engine compartment 12 and a noise radiation in the opposite direction cooperates from the engine compartment 12 and through the radiator 3 to the environment. The engine compartment 12 is further designed for the latter purpose as a known noise capsule in a manner not shown.

Der Rollvorhang 4 weist über dem Zargenring 10 eine Aufwickelrolle 13 auf. Zwischen dem Kühler 3 und dem Rollvorhang 4 bzw. dem Abstützgitter 5 ist in der Lüfterzarge 9 mindestens eine untere ins Freie mündende Kühlluft-Austrittsöffnung 14 mit Rückstromklappe 15 angeordnet, die eine Kühlwirkung des Kühlers 3 für Teillastbetrieb der Maschine 7 bei geschlossenem Rollvorhang 4 ermöglicht. Der warme Kühlluftstrom aus dem Kühler 3 schützt dabei den Rollvorhang 4 vor dem Festfrieren und gewährleistet damit dessen selbsttätig steuerbares Öffnen bei Erreichen eines vorbestimmten Betriebszustandes der Maschine 7, wie hohe Werte der Umgebungstemperatur, der Motorraumtemperatur, einer Bauteil-Temperatur, der Motorleistung und/oder der Kühlflüssigkeits Temperatur. In über den Zargenring 10 hinausreichenden Dreiecksbereichen der Lüfterzarge 9 und des Abstützgitters 5 sind zum Zargenring 10 parallel wirkende Stauluftöffnungen 16 mit Stauluft-Klappen 17 angeordnet, die eine vom Rollvorhang 4 gesteuerte, zur Förderung des Lüfters 6 zusätzliche Stauluftströmung ergeben.The roller blind 4 has a winding roller 13 above the frame ring 10. At least one lower cooling air outlet opening 14 with a backflow flap 15, which opens out into the open, is arranged in the fan frame 9 between the cooler 3 and the rolling curtain 4 or the support grid 5, which enables the cooling effect 3 of the cooler 3 for partial load operation of the machine 7 when the rolling curtain 4 is closed. The warm cooling air flow from the cooler 3 protects the roller blind 4 from freezing and thus ensures its automatically controllable opening when a predetermined operating state of the machine 7 is reached, such as high values of the ambient temperature, the engine compartment temperature, a component temperature, the engine power and / or the coolant temperature. In triangular areas of the fan frame 9 and the support grille 5 which extend beyond the frame ring 10, ram air openings 16 with ram air flaps 17 acting parallel to the frame ring 10 are arranged, which result in an additional ram air flow controlled by the roller blind 4 to promote the fan 6.

Claims (5)

1. A control device for the cooling of air-liquid cooled internal-combustion engines, especially those of motor vehicles, with an air-liquid cooler (3), a cooling air closure member (roller curtain 4) which is controlled in a temperature-dependent manner, and a cooler-fan (6), which are arranged in series in the above sequence in the direction of flow (2) of the cooling air in a cooling air-inflow channel (fan frame 9) to an engine housing or respective motor chamber (12), in which the closure member (roller curtain 4) in its closed position closes the connection openings between the cooling air outlet (8) of the cooler (3) and the engine housing or respective motor chamber (12), characterised in that the closure member (roller curtain 4) in its closed position and the part of the inflow channel (fan frame 9) adjoining the closure member in the direction of flow (2) are components of the engine housing or respective motor chamber (12) which is constructed as a noise capsule and that, in the inflow channel (fan frame 9)·outside the noise capsule between the fan (3) and closure member (roller curtain 4), a cooling air outlet opening (14) is arranged which opens out towards the exterior and closes in the opposite sense to the closure member (roller curtain 4).
2. A device according to Claim 1, characterised in that the closure member (roller curtain 4) is constructed so as to be air-tight to the greatest possible extent and that the fan (6) has a fan frame (9) with a narrow annular clearance (11) on the outer circumference of its impeller, which clearance is free of backflow to the greatest possible extent.
3. A device according to Claim 1 or 2, characterised in that the closure member is constructed as a roller curtain (4) with a support grid (5) which penetrates the fan frame (9) transversely to the direction of flow (2) of the cooling air and against which the roller curtain (4) rests in its closed position in the direction of flow (2) of the cooling air.
4. A device according to Claim 3, characterised in that the fan frame (9) has an approximately cylindrical frame ring (10) which immediately adjoins the support grid (5) in the direction of flow (2) of the cooling air, and that the support grid (5) has a rectangular shape projecting beyond the frame ring (10). in approximately triangular regions of which, outside the frame ring (10), ram air passage openings (16) are arranged in the fan frame (9), which openings are controlled by the roller curtain (4) and by ram air flaps (17).
5. A device according to any one of Claims 1 to 4, characterised in that the cooling air outlet opening (14) which opens out towards the exterior between the cooler (3) and the closure member (roller curtain 4) has a backflow flap (15) which closes automatically when the closure member (roller curtain 4) is open and when the fan (6) is driven.
EP85116060A 1984-12-21 1985-12-17 Control device for the cooling air of an air-water-cooled internal-combustion engine, especially for motor vehicles Expired EP0189575B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3446950A DE3446950C1 (en) 1984-12-21 1984-12-21 Control device for the cooling air of air-liquid-cooled internal combustion engines, in particular of motor vehicles
DE3446950 1984-12-21

Publications (2)

Publication Number Publication Date
EP0189575A1 EP0189575A1 (en) 1986-08-06
EP0189575B1 true EP0189575B1 (en) 1988-03-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP85116060A Expired EP0189575B1 (en) 1984-12-21 1985-12-17 Control device for the cooling air of an air-water-cooled internal-combustion engine, especially for motor vehicles

Country Status (6)

Country Link
US (1) US4756279A (en)
EP (1) EP0189575B1 (en)
JP (1) JPS62501864A (en)
DE (2) DE3446950C1 (en)
ES (1) ES8701624A1 (en)
WO (1) WO1986003803A1 (en)

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DE3446950C1 (en) 1986-05-22
DE3561967D1 (en) 1988-04-28
US4756279A (en) 1988-07-12
WO1986003803A1 (en) 1986-07-03
ES8701624A1 (en) 1986-12-16
ES550189A0 (en) 1986-12-16
JPS62501864A (en) 1987-07-23
EP0189575A1 (en) 1986-08-06

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