EP0670414B1 - Kühlungsanlage für eine Brennkraftmaschine - Google Patents

Kühlungsanlage für eine Brennkraftmaschine Download PDF

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Publication number
EP0670414B1
EP0670414B1 EP19950400428 EP95400428A EP0670414B1 EP 0670414 B1 EP0670414 B1 EP 0670414B1 EP 19950400428 EP19950400428 EP 19950400428 EP 95400428 A EP95400428 A EP 95400428A EP 0670414 B1 EP0670414 B1 EP 0670414B1
Authority
EP
European Patent Office
Prior art keywords
cooling
fluid
alternator
circuit
engine
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 - Lifetime
Application number
EP19950400428
Other languages
English (en)
French (fr)
Other versions
EP0670414A1 (de
Inventor
Anne Tugaye
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.)
Renault SAS
Original Assignee
Renault SAS
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Filing date
Publication date
Application filed by Renault SAS filed Critical Renault SAS
Publication of EP0670414A1 publication Critical patent/EP0670414A1/de
Application granted granted Critical
Publication of EP0670414B1 publication Critical patent/EP0670414B1/de
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
    • F01P3/00—Liquid cooling
    • F01P3/12—Arrangements for cooling other engine or machine parts
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/20—Cooling circuits not specific to a single part of engine or machine
    • 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
    • F01P11/029—Expansion reservoirs
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
    • F01P2003/185—Arrangements or mounting of liquid-to-air heat-exchangers arranged in parallel
    • 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/08—Cabin heater
    • 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/18—Heater
    • F01P2060/185—Heater for alternators or generators
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/18—Arrangements or mounting of 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
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops

Definitions

  • the present invention relates to a system of cooling for a combustion engine internal fitted to a motor vehicle.
  • the invention relates more particularly to a cooling system adapted to allow the cooling of the alternator driven by the engine.
  • Alternators of combustion engines internal are usually fixed on a support mounted on the wall of the engine block so that allow the rotor shaft to be driven by the crankshaft through a simple belt.
  • alternators are made up of electrical components that no longer work perfectly reliable when the temperature room becomes too high.
  • the most common method of ensuring correct cooling of an alternator consists by adding one or more fans internal or external integral with the shaft of the rotor.
  • this method does not allow always sufficient cooling in particular for vehicle alternators automobile whose performance is increasing higher in more and more space reduced.
  • the alternator cooling system is connected to the liquid inlet manifold engine block cooling.
  • the integration of the alternator in the cooling system at pump outlet and parallel to the block motor makes balancing flow rates difficult and does not ensure sufficient flow of the coolant through the alternator and therefore ensure satisfactory cooling of the last.
  • the object of the present invention is further improve the efficiency of a liquid cooling for internal combustion of motor vehicle allowing to carry out in a simple way the alternator cooling.
  • the liquid cooling system for internal combustion engine fitted to a motor vehicle comprises a internal circuit passing through the engine block, a main liquid / air type heat exchanger and a pump driving the liquid.
  • the system of cooling is characterized in that it includes a derivative cooling system serving an alternator driven by the engine by which the coolant introduced in the alternator is taken from the circuit internal of the engine block and is driven back to the inlet of said internal circuit and the circuit bypass cooling has a heat exchanger secondary liquid / air disposed upstream of the alternator.
  • the circulation within the circuit derivative cooling is controlled by a thermostat.
  • the circuit alternator cooling derivative is connected on the one hand, upstream in the direction of the coolant flow, at the pipe that connects the output of the internal circuit from the engine block to the inlet of the heat exchanger main, and secondly downstream, to the pipe which connects the outlet of the heat exchanger main heat at the input of the internal circuit of the engine block.
  • the structural characteristics of the heat exchanger main heat and secondary heat exchanger are adapted according to the respective flow rates of coolant flowing through them.
  • the main heat exchanger and the exchanger secondary are arranged in two separate places of the engine compartment.
  • Figure 1 therefore presents a system of cooling, identified by reference 1 on the drawing, by liquid (usually water with antifreeze and anticorrosion product) more particularly intended for cooling of an internal combustion engine 2 for example of the multicylinder type equipping a motor vehicle. Only the necessary elements to the understanding of the invention have been figured.
  • liquid usually water with antifreeze and anticorrosion product
  • the liquid cooling system presented conventionally includes an internal circuit 12 (also called water chambers) crossing the engine block 2 to cool the combustion.
  • the coolant is cooled by a sweep of air in a radiator consisting of a main heat exchanger 4 liquid / air.
  • the liquid is driven by a pump 3 placed immediately upstream of the internal circuit 12 of engine 2.
  • Line 10 connecting output of internal circuit 12 at the exchanger main 4 has a thermostat 5 which defines a bypass connection 13 serving an air heater 6 for home heating and a vase expansion 7.
  • a pipe 11 ensures the return liquid from the main exchanger 4 at the inlet of the internal circuit 12.
  • the cooling system includes plus a branched cooling circuit 14 comprising a secondary liquid / air exchanger 8 and the alternator 9. Following the completion of the invention, the coolant introduced into the alternator is taken at the outlet of the internal circuit 12 of the motor 2 and is driven back to the entrance to the latter.
  • circuit 14 of alternator 9 cooling is connected on the one hand, upstream in the direction of flow coolant, to line 10 which connects the output of the internal circuit 12 of the block motor 2 at the inlet of the heat exchanger main 4, the connection can be made before (see figure 1) or after thermostat 5, and on the other hand downstream, to line 11 which connects the outlet of the main heat exchanger 4 at the input of the internal circuit 12 of the engine block 2.
  • connection of the branch circuit 14 intended when the alternator 9 cools, at the outlet of the internal circuit 12 of the motor 2, allows to significantly increase the flow of liquid to through the alternator 9 whatever the point of engine operation, and therefore improve eliminating calories compared to known systems in which the derivative circuit is supplied upstream of the internal circuit 12 of the motor 2.
  • the higher temperature of the outgoing liquid of motor 2 is largely attenuated by the exchanger secondary temperature 8 disposed upstream of the alternator 9.
  • thermostat 5 When the engine is cold, thermostat 5 is closed and the liquid does not circulate in the main exchanger 4 but only in the branch circuit 14 and in bypass circuit 13 serving the heater 6. When the engine heats up the thermostat opens allowing the liquid to circulate all at once in the main exchanger 4, in the air heater 6, and in the branch circuit 14 serving the alternator 9.

Landscapes

  • 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)
  • Motor Or Generator Cooling System (AREA)

Claims (5)

  1. Flüssigkeitskühlsystem für einen Verbrennungsmotor (2), mit dem ein Kraftfahrzeug ausgerüstet ist, das ein inneres Leitungssystem (12), das den Motorblock (2) durchläuft, einen Hauptwärmetauscher (4) des Typs Flüssigkeit/ Luft und eine Pumpe (3) aufweist, welche die Flüssigkeit antreibt, dadurch gekennzeichnet, daß es einen Nebenkühlkreislauf (14) umfaßt, der eine von dem Motor (2) angetriebene Drehstromlichtmaschine (9) versorgt und der die in die Drehstromlichtmaschine (9) eingeleitete Kühlflüssigkeit am Auslaß des inneren Leitungssystems (12) des Motorblocks (2) entnimmt und zum Einlaß dieses inneren Leitungssystems (12) zurückpumpt, wobei der Nebenkühlkreislauf (14) einen sekundären Flüssigkeit/Luft-Wärmetauscher (8) aufweist, der stromaufwärts von der Drehstromlichtmaschine (9) angeordnet ist.
  2. Flüssigkeitskühlsystem nach Anspruch 1, dadurch gekennzeichnet, daß die Zirkulation im Innern des Nebenkühlkreislaufs (14) von einem Thermostaten gesteuert wird.
  3. Flüssigkeitskühlsystem nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, daß der Nebenkühlkreislauf (14) der Drehstromlichtmaschine (9) einerseits, stromaufwärts in Fließrichtung der Kühlflüssigkeit, an der Leitung (10), die den Auslaß des inneren Leitungssystems (12) des Motorblocks (2) mit dem Einlaß des Hauptwärmetauschers (4) verbindet, und andererseits stromabwärts an der Leitung (11), die den Auslaß des Hauptwärmetauschers (4) mit dem Einlaß des inneren Leitungssystems (12) des Motorblocks (2) verbindet, angeschlossen ist.
  4. Flüssigkeitskühlsystem nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die baulichen Merkmale des Hauptwärmetauschers (4) und des sekundären Wärmetauschers (8) an die jeweiligen Kühlflüssigkeits-Durchflußmengen angepaßt sind, die sie durchströmen.
  5. Flüssigkeitskühlsystem nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Hauptwärmetauscher (4) und der sekundäre Wärmetauscher (8) an zwei verschiedenen Orten des Motorraumes angeordnet sind.
EP19950400428 1994-03-01 1995-02-28 Kühlungsanlage für eine Brennkraftmaschine Expired - Lifetime EP0670414B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9402314 1994-03-01
FR9402314A FR2716932B1 (fr) 1994-03-01 1994-03-01 Système de refroidissement pour un moteur à combustion interne de véhicule automobile.

Publications (2)

Publication Number Publication Date
EP0670414A1 EP0670414A1 (de) 1995-09-06
EP0670414B1 true EP0670414B1 (de) 1998-05-20

Family

ID=9460529

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19950400428 Expired - Lifetime EP0670414B1 (de) 1994-03-01 1995-02-28 Kühlungsanlage für eine Brennkraftmaschine

Country Status (3)

Country Link
EP (1) EP0670414B1 (de)
DE (1) DE69502520T2 (de)
FR (1) FR2716932B1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2744398B1 (fr) * 1996-02-06 1998-02-27 Valeo Equip Electr Moteur Vehicule automobile muni d'un alternateur a refroidissement liquide
EP0835989A1 (de) * 1996-09-13 1998-04-15 SMH Management Services AG Fahrzeug mit Kühlanordnung für einen Verbrennungsmotor
DE19706661A1 (de) * 1997-02-20 1998-08-27 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
GB2475079B (en) 2009-11-05 2015-02-18 Ford Global Tech Llc Cooling systems

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2188172A (en) * 1937-01-06 1940-01-23 Gen Electric Heat transfer system
DE3044422C2 (de) * 1980-11-26 1989-06-29 Audi Nsu Auto Union Ag, 7107 Neckarsulm Heizanlage für den Fahrgastraum eines Kraftfahrzeuges
JPS5875464A (ja) * 1981-10-28 1983-05-07 Hino Motors Ltd リタ−ダの冷却装置
KR910001521B1 (ko) * 1987-03-23 1991-03-15 미쓰비시전기 주식회사 차량발전기와 기관용 시동전동기의 냉각장치

Also Published As

Publication number Publication date
EP0670414A1 (de) 1995-09-06
FR2716932B1 (fr) 1996-03-29
DE69502520T2 (de) 1999-01-28
FR2716932A1 (fr) 1995-09-08
DE69502520D1 (de) 1998-06-25

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