EP0931209B1 - Unite motrice a pompe hydraulique thermoregulee - Google Patents

Unite motrice a pompe hydraulique thermoregulee Download PDF

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Publication number
EP0931209B1
EP0931209B1 EP97910425A EP97910425A EP0931209B1 EP 0931209 B1 EP0931209 B1 EP 0931209B1 EP 97910425 A EP97910425 A EP 97910425A EP 97910425 A EP97910425 A EP 97910425A EP 0931209 B1 EP0931209 B1 EP 0931209B1
Authority
EP
European Patent Office
Prior art keywords
coolant
drive unit
engine
speed
pump
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
EP97910425A
Other languages
German (de)
English (en)
Other versions
EP0931209A1 (fr
Inventor
Peter Edelmann
Klaus Vogelsang
Peter Heilinger
Peter Rose
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.)
Voith Turbo GmbH and Co KG
Original Assignee
Voith Turbo GmbH and Co KG
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 Voith Turbo GmbH and Co KG filed Critical Voith Turbo GmbH and Co KG
Publication of EP0931209A1 publication Critical patent/EP0931209A1/fr
Application granted granted Critical
Publication of EP0931209B1 publication Critical patent/EP0931209B1/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
    • 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
    • F01P7/164—Controlling of coolant flow the coolant being liquid by thermostatic control by varying pump 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
    • F01P2025/00—Measuring
    • F01P2025/60—Operating parameters
    • 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
    • F01P2025/60—Operating parameters
    • F01P2025/66—Vehicle 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/06—Retarder
    • 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
    • F01P7/161—Controlling of coolant flow the coolant being liquid by thermostatic control by bypassing pumps

Definitions

  • the invention relates to a drive unit, in particular for a motor vehicle with an internal combustion engine and a transmission, as well as a cooling circuit comprising a coolant for cooling the engine.
  • cooling circuits comprising a coolant, preferably water with the appropriate anti-freeze additives. It flows through a certain amount of coolant per unit of time the engine to be cooled, absorbs the heat of the internal combustion engine and transports them to a cooler, for example a finned cooler, in the amount of heat absorbed and transported to the environment is delivered.
  • the cooling capacity of such a system is in the essentially determined by the amount of coolant circulated.
  • the coolant is circulated by means of a coolant pump. there the flow rate of the coolant pump determines the coolant flow through the Cooling circuit.
  • Coolant pump generally depends on its speed.
  • Conventional coolant pumps are in constant drive connection the engine, so they work depending on the engine speed.
  • this method for cooling an engine, especially one Internal combustion engine is that high pumping power even in cases in to whom this is not required. For example summer and winter will always be the same with such an arrangement
  • Quantity of coolant pumped through the cooling circuit without Consideration of the respective operating parameters e.g. overrun and Partial load operation.
  • Working medium is also the cooling medium for the engine. Then must go safe heat dissipation designed the flow rate of the coolant pump be that the heat is dissipated even when the retarder is switched on can be. This requires pumps with very high performance.
  • a separate fluid circuit e.g. according to DE-A-44 47 166, Fig. 13
  • the retarder is in the To integrate the water circuit of the engine cooler (DE-A-44 47 166, Fig. 10-12, column 4).
  • this object is achieved by a drive unit according to the Claim 1 solved.
  • FIG. 1 is a drive unit consisting of a motor 1 and a Cooling circuit 3 shown.
  • the cooling circuit 3 comprises a cooler 5, one Coolant pump 7, which is designed as a speed-controlled coolant pump, and a surge tank 9, the pump suction side always for one sufficient overpressure. Furthermore, one is in the cooling circuit Switchover valve 11 and a retarder 13 are provided.
  • the invention but is in no way limited to only those embodiments in which a retarder is arranged in the coolant circuit. The invention is also applicable when only engine cooling by means of a cooling circuit and a speed-controlled coolant pump is provided.
  • a bypass line 40 leads past the cooler and branches at point 42.
  • a changeover valve 44 is arranged, which is a 3/2-way valve can be designed.
  • the 3/2-way valve has the function of Control coolant flow so that it either through the radiator or can be led past the cooler through the bypass line 40.
  • the 3/2-way valve controls the operating phase with high heat dissipation Some or most of the cooling flow to the cooler 5.
  • Lower in phase The 3/2-way changeover valve 44 controls heat dissipation via the coolant the bypass line to motor 1 or to pump 7.
  • the 3/2-way valve can be designed as an expansion valve or as an electrical or pneumatic continuously regulating valve.
  • the cooler can be supported by means of a fan 15.
  • the engine 1 has in the present case as a means for determining the temperature Temperature sensor 20 on.
  • Temperature sensor 20 can be a means for determining the temperature Temperature sensor 20 on.
  • a control device 24 is connected via the signal line 22 Temperature signal supplied, which is the current motor temperature represents. It goes without saying, for example, with several Temperature sensors possible, the control device 24 a variety of To supply temperature signals and to determine the actual temperature value, which serves as a reference variable in the present control loop, a Averaging over a variety of temperature signals.
  • the Control device 24 itself is a maximum temperature value for the motor as Setpoint stored for the control loop.
  • this maximum Temperature setpoint is a single value for all engine operating conditions.
  • a value that follows the load state of the engine can be based on the Act directly on the pump speed control, i.e. the pump control is not only dependent on the temperature setpoint.
  • the detection of the Load state can be a torque sensor or the control unit for the Motor can be removed.
  • the amount of coolant caused by the engine is always promoted so that the engine at the maximum permissible coolant temperature is driven, d. H. the coolant pump will in their speed both with deviations to higher as well as lower temperatures than the specified target temperature using the Regulating device 24 regulated. This ensures that in the cooling circuit only circulates the exact amount that is required for Reaching the engine setpoint temperature is required. This is it Particularly advantageous if the coolant pump 7 is speed-controlled means its delivery rate directly from the speed at which it rotates depends.
  • FIG. 2 shows a further embodiment of the invention, in in the cooling circuit in addition to the speed-controlled pump 7 in the cooling circuit a further pump 30 is provided.
  • the pump 30 is in this Embodiment arranged upstream of the switching valve 11 for the bypass 26.
  • Fig. 1 For same aggregates as in Fig. 1 are again the same in Fig. 2 Reference number chosen.
  • the advantage of the training shown in FIG. 2 is that the speed-controlled pump 7 depending on the control device 24 the motor temperature recorded via the sensor 20 is regulated in their delivery rate can be designed very low, because in the cooling circuit a further pump 30 is provided, which in the present Embodiment is operated depending on the vehicle speed and for provides a basic delivery rate in the cooling circuit.
  • the pump 30 is like this dimensioned so that when the retarder is not operated, i. H. in that condition, in which the coolant is directed past the retarder through the bypass line 26 is sufficient to provide the pumping power required for engine cooling to provide.
  • the control will respond and the control device Start speed-controlled pump 7, which then exactly with one is operated such a speed that an additional flow rate for Is provided to undue heating of the engine verhindem.
  • the control device in turn operates as in FIG. 1 described, d. H. in the event of deviations from a specified one Motor temperature setpoint is the speed of pump 7 as long set accordingly until this specified setpoint motor temperature is reached.
  • the regulation allows the coolant circuit Always drive straight so that the engine is close to the maximum permissible temperature. As already shown above, this has one considerable fuel savings.
  • a third embodiment shown in Fig. 3 are again for same aggregates the same reference numerals as in Figs. 1 and 2 used.
  • the further pump 30 is now behind the changeover valve 11 arranged immediately before the retarder 13.
  • the base load for The speed-sensitive pump 7 now takes over coolant delivery again depending on the engine temperature using the Control device 24 controlled and in such a way that depending on predetermined target value and the deviation of the actual value from it speed-controlled pump is controlled.
  • the speed-controlled pump can be interpreted in their delivery rate very low, since they only the in Coolant circuit without any heat generated by the retarder must be removed. If the retarder is now switched on, the another pump 30 switched on and the higher required for cooling Delivery volume made available by this.
  • Both according to the embodiment according to FIG. 2 and according to FIG. 3 can the control device additionally via a signal line 32 with the Switching valve 11 may be connected in order to be supplied with a status signal to get information about whether the coolant through the Retarder or bypassed by this.
  • the To activate control by means of the control device 24 only when on a signal is present on the signal line 32, which indicates the coolant is passed through the retarder and serves as the working medium there.
  • the speed-controlled pumps 7 can be driven by means of a Electric motor, which in turn is connected to the electrical circuit of the vehicle connected.
  • Electric motors that are suitable are known to the person skilled in the art the prior art, see, for example, "Dubbel, Paperback for mechanical engineering, 18th edition, 1995, pages V18 - V51 ".
  • coolant pumps be one or more of which are speed-controlled coolant pumps.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Claims (6)

  1. Unité d'entraínement avec un moteur à combustion interne (1) et un engrenage ainsi qu'avec un circuit de refroidissement (3) comprenant un fluide de refroidissement pour le refroidissement du moteur à combustion interne (1), dans lequel
    au moins une pompe à fluide de refroidissement (7) à vitesse de rotation régulée est prévue pour acheminer le fluide de refroidissement dans le circuit de refroidissement et
    le circuit de refroidissement (3) comprend, outre la pompe à fluide de refroidissement (7) à vitesse de rotation régulée au nombre d'une au moins, au moins une autre pompe à fluide de refroidissement (30),
    l'autre pompe à fluide de refroidissement (30) au nombre d'une au moins est entraínée en fonction de la vitesse de circulation,
    l'unité d'entraínement comprend des moyens pour déterminer la température du moteur et un dispositif de régulation (24) pour réguler le débit de la pompe à fluide de refroidissement (7) à vitesse de rotation régulée en fonction de la température mesurée au niveau du moteur, ainsi qu'un retardateur secondaire (13) parcouru par le fluide de refroidissement, et
    le dispositif de régulation (24) comprend un algorithme de régulation, caractérisée en ce que la pompe à fluide de refroidissement (7) à vitesse de rotation régulée est commandée de telle sorte que le débit soit toujours tel qu'une température maximale prédéterminée du moteur (1) ne soit pas dépassée, quel que soit l'état de fonctionnement du retardateur.
  2. Unité d'entraínement selon la revendication 1, caractérisée en ce que l'unité d'entraínement comprend en outre une soupape d'inversion (11).
  3. Unité d'entraínement selon l'une quelconque des revendications 1 à 2, caractérisée en ce que la pompe à fluide de refroidissement (7) à vitesse de rotation régulée au nombre d'une au moins a une puissance suffisante pour garantir un refroidissement suffisant du moteur (1) lorsque le retardateur (13) est arrêté.
  4. Unité d'entraínement selon l'une quelconque des revendications 1 à 3, caractérisée en ce que l'autre pompe à fluide de refroidissement (30) au nombre d'une au moins a une puissance suffisante pour garantir un refroidissement suffisant du moteur (1) lorsque le retardateur (13) est arrêté.
  5. Unité d'entraínement selon l'une quelconque des revendications 1 à 4, caractérisée en ce que le fluide de refroidissement du circuit de refroidissement (3) est de l'eau ou un mélange à base d'eau.
  6. Unité d'entraínement selon l'une quelconque des revendications 1 à 5, caractérisée en ce que le circuit de refroidissement (3) comprend une conduite de dérivation (40) qui passe devant le radiateur (5).
EP97910425A 1996-10-09 1997-10-08 Unite motrice a pompe hydraulique thermoregulee Expired - Lifetime EP0931209B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19641559 1996-10-09
DE19641559A DE19641559A1 (de) 1996-10-09 1996-10-09 Antriebseinheit mit thermisch geregelter Wasserpumpe
PCT/EP1997/005544 WO1998015725A1 (fr) 1996-10-09 1997-10-08 Unite motrice a pompe hydraulique thermoregulee

Publications (2)

Publication Number Publication Date
EP0931209A1 EP0931209A1 (fr) 1999-07-28
EP0931209B1 true EP0931209B1 (fr) 2003-05-07

Family

ID=7808240

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97910425A Expired - Lifetime EP0931209B1 (fr) 1996-10-09 1997-10-08 Unite motrice a pompe hydraulique thermoregulee

Country Status (3)

Country Link
EP (1) EP0931209B1 (fr)
DE (2) DE19641559A1 (fr)
WO (1) WO1998015725A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19832626C1 (de) * 1998-07-21 2000-03-16 Daimler Chrysler Ag Regelung eines Kühlkreislaufes eines motorgetriebenen Fahrzeuges
SE521618C2 (sv) * 1998-07-31 2003-11-18 Volvo Lastvagnar Ab Förfarande och anordning för avluftning av ett kylvätskesystem till en förbränningsmotor
DE19914440A1 (de) 1999-03-30 2000-10-05 Volkswagen Ag Vorrichtung zur temperaturabhängigen Verbindung von Bauteilen
DE19930356A1 (de) * 1999-07-01 2001-01-04 Zahnradfabrik Friedrichshafen Automatgetriebe
DE10062222A1 (de) * 2000-12-13 2002-06-20 Zahnradfabrik Friedrichshafen Verfahren zur Anforderung bremsleistungsunterstützender Systeme
DE10242736A1 (de) * 2002-09-13 2004-03-18 Voith Turbo Gmbh & Co. Kg Antriebseinheit mit einem Retarder
FR2929330B1 (fr) * 2008-04-01 2010-04-09 Peugeot Citroen Automobiles Sa Circuit de refroidissement moteur.
DE102010009757A1 (de) 2010-03-01 2011-08-25 Voith Patent GmbH, 89522 Fahrzeugkühlkreislauf mit einem hydrodynamischen Retarder
CN103481871B (zh) * 2013-10-15 2015-07-22 江苏理工学院 车用冷却液介质式液力缓速装置

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2384106A1 (fr) * 1977-03-16 1978-10-13 Sev Marchal Dispositif de refroidissement pour moteur a combustion interne
DE3024209A1 (de) * 1979-07-02 1981-01-22 Guenter Dr Rinnerthaler Fluessigkeitskuehlung fuer verbrennungsmotoren
US4434749A (en) * 1981-03-25 1984-03-06 Toyo Kogyo Co., Ltd. Cooling system for liquid-cooled internal combustion engines
JPH0623539B2 (ja) * 1985-05-20 1994-03-30 本田技研工業株式会社 車両用エンジン冷却装置
DE3738412A1 (de) * 1987-11-12 1989-05-24 Bosch Gmbh Robert Vorrichtung und verfahren zur motorkuehlung
DE3810174C2 (de) * 1988-03-25 1996-09-19 Hella Kg Hueck & Co Einrichtung zur Regelung der Kühlmitteltemperatur einer Brennkraftmaschine, insbesondere in Kraftfahrzeugen
JPH0417715A (ja) * 1990-05-07 1992-01-22 Nippondenso Co Ltd 内燃機関の冷却装置
DE4102929A1 (de) * 1991-01-31 1992-08-06 Man Nutzfahrzeuge Ag Kraftfahrzeug mit einer einrichtung zur bremsenergierueckgewinnung
SE501444C2 (sv) * 1993-07-01 1995-02-20 Saab Scania Ab Kylsystem för ett med retarder utrustat fordon
DE9419818U1 (de) * 1994-02-09 1995-03-16 Lübeck, Tino, 44866 Bochum Regelbare elektrische Wasserpumpe zur Kühlung von Verbrennungskraftmaschinen
DE4445024A1 (de) * 1994-12-16 1995-06-08 Voith Turbo Kg Antriebseinheit
DE4446288A1 (de) * 1994-12-23 1995-06-29 Voith Turbo Kg Antriebseinheit mit einer Brennkraftmaschine und einem hydrodynamischen Retarder
DE4447166A1 (de) * 1994-12-30 1995-06-08 Voith Turbo Kg Bremsanlage mit einem hydrodynamischen Retarder, insbesondere für ein Kraftfahrzeug

Also Published As

Publication number Publication date
DE19641559A1 (de) 1998-04-16
WO1998015725A1 (fr) 1998-04-16
DE59710060D1 (de) 2003-06-12
EP0931209A1 (fr) 1999-07-28

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