EP1399656B1 - Procede de surveillance d'un circuit de refroidissement dans un moteur a combustion interne - Google Patents

Procede de surveillance d'un circuit de refroidissement dans un moteur a combustion interne Download PDF

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Publication number
EP1399656B1
EP1399656B1 EP02732398A EP02732398A EP1399656B1 EP 1399656 B1 EP1399656 B1 EP 1399656B1 EP 02732398 A EP02732398 A EP 02732398A EP 02732398 A EP02732398 A EP 02732398A EP 1399656 B1 EP1399656 B1 EP 1399656B1
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EP
European Patent Office
Prior art keywords
cooling liquid
differential pressure
temperature
internal combustion
combustion 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
EP02732398A
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German (de)
English (en)
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EP1399656A1 (fr
Inventor
Roland Herynek
Martin Vollmer
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Robert Bosch GmbH
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Robert Bosch GmbH
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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
    • F01P7/02—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
    • 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
    • F01P11/14—Indicating devices; Other safety devices
    • F01P11/16—Indicating devices; Other safety devices concerning coolant 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
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/14—Indicating devices; Other safety 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
    • F01P2023/00—Signal processing; Details thereof
    • F01P2023/08—Microprocessor; Microcomputer
    • 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
    • F01P2025/04—Pressure
    • 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
    • F01P2025/04—Pressure
    • F01P2025/06—Pressure for determining flow
    • 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
    • F01P2025/31—Cylinder 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
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • F01P2025/33—Cylinder head 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
    • 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

Definitions

  • the invention is based on a method for monitoring a coolant circuit of an internal combustion engine according to the preamble of claim 1.
  • the heat given off to a cylinder head and cylinder block via a wall of a combustion chamber is substantially dissipated by a coolant.
  • the cooling liquid is circulated by a pump, which is usually mechanically driven by the internal combustion engine. Solutions are also known in which a controllable electric motor serves as a pump drive.
  • the cooling liquid is conveyed through a control valve through a radiator or passed through a bypass line, which is provided parallel to the radiator.
  • a heating heat exchanger for the passenger compartment is connected to the coolant circuit.
  • An optionally controlled by means of a map target temperature of the cooling liquid is adjusted so that the permissible temperatures of the components to be cooled and the cooling liquid are never exceeded during operation.
  • a device and a method for a very sensitive control of the temperature of an internal combustion engine is known.
  • a control device a plurality of input signals are supplied, such as the temperature of the internal combustion engine, the speed and load of the internal combustion engine, the vehicle speed, the operating condition of an air conditioner or the heating of the vehicle and the temperature of the cooling water.
  • a setpoint generator of the control device determines, taking into account the input signals, a temperature setpoint for the internal combustion engine.
  • the control device acts on a three-way valve which is arranged in the mouth region of a bypass line in a line between the internal combustion engine and a radiator.
  • the supply flow is split between the radiator inlet and the bypass line.
  • cooling of the internal combustion engine is detected not only as a function of operating parameters which are directly important for the temperature development, but also as a function of parameters of additional units which only indirectly influence the temperature.
  • the possibilities for setting the optimum temperature are significantly expanded, because even disturbances can be detected and taken into account.
  • JP 61 081517 A is a cooling liquid circuit of an internal combustion engine with a heat exchanger, a control valve, a coolant pump and an electronic control unit known.
  • a sensor is arranged, which detects the differential pressure between the inlet and the outlet of the coolant pump.
  • control unit from operating parameters of the internal combustion engine with the aid of deviation maps before a permissible upper and lower deviation of a reference parameter from a target value. This compares them with a difference between a setpoint and an actual value of the reference parameter, the actual value being off If necessary, parameters of the volume flow of the cooling liquid are determined by means of characteristic diagrams.
  • the invention is based on the recognition that the emissions of an internal combustion engine are influenced by the combustion and these in turn by the temperatures of critical components, in particular the combustion chamber wall, at Reciprocating internal combustion engines is mainly formed by the inner wall of the cylinder and the cylinder head. If the relationship between the component temperature and the emission as a function of an operating point of the internal combustion engine is known and present in a map, the diagnosis and monitoring are met by monitoring the component temperatures. In this case, the temperature of the component itself or of a parameter related to this temperature can be used as a reference parameter. The temperatures of the selected reference component are determined in a given internal combustion engine at a certain operating point by the temperature and the volume flow of the cooling liquid. According to the invention, therefore, the temperature and the volume flow of the cooling liquid are used to monitor the cooling liquid circuit.
  • the temperature of the reference component itself for example, the wall of a cylinder or cylinder block or cylinder head
  • a temperature map and a coolant temperature preferably measured at the output of the internal combustion engine and an actual value of the volume flow
  • an actual value of the temperature of the reference component is determined.
  • the actual value of the volume flow results from a differential pressure, which is established at a throttle point in the main flow of the cooling fluid, and the control signal of the coolant pump.
  • the difference is formed and compared with an allowable lower and upper deviation of the temperature of the reference component. Is the result of the comparison greater or? equal to one, an output signal is generated, from which it can be concluded that there is a malfunction in the coolant pump or in the coolant circuit, eg by clamping the fluid pump or a control valve or by squeezing a hose.
  • the coolant temperature In the warm state, the coolant temperature is either kept constant or varied within a permissible range.
  • the diagnosis of the coolant temperature signal can take place with an extended characteristic map or with a more extensive control in the control unit.
  • an additional map is expediently stored in the control unit, which simulates the temperature increase of the reference component theoretically. As a result, it can be detected whether the coolant temperature rises to a predetermined extent. This ensures that the internal combustion engine is not always operated continuously in cold running and in a poor emission range, e.g. when a control valve jams and the coolant is conveyed through the radiator even though the engine is still cold.
  • the differential pressure can be selected in a simple manner according to an embodiment of the invention as a reference parameter.
  • a desired value for a differential pressure is determined from a drive signal of the coolant pump with the aid of a differential pressure characteristic map.
  • the throttle point can be formed by the coolant pump itself or lie at another point in the main flow of the coolant. From the setpoint and an actual value of the differential pressure, by a differential pressure sensor to a Throttle point is measured in the main flow of the cooling liquid, a difference is formed, which is compared with a lower and upper permissible deviation.
  • the throttle point can be formed by the coolant pump itself or lie at another point in the main flow of the coolant. The permissible deviations result from corresponding maps as a function of the speed and the load of the internal combustion engine.
  • a further simplified method results according to a further embodiment of the invention, which is particularly suitable for coolant circuits with a mechanically driven coolant pump and in whose coolant circuit a throttle valve for controlling the volume flow is provided.
  • a desired value for a differential pressure is specified.
  • an actual value for a differential pressure is determined from the temperature of the coolant at the outlet of the internal combustion engine and an absolute pressure of the coolant after the coolant pump with the aid of a further differential pressure characteristic.
  • the difference between the desired value and the actual value of the differential pressure is compared as described above with a corresponding lower and upper permissible deviation of the differential pressure.
  • the permissible deviations are obtained by means of appropriate maps from the speed and the load of the internal combustion engine.
  • An internal combustion engine 10 comprises a cylinder head 12 and a cylinder block 14, which are connected to a coolant circuit 16.
  • the flow direction of the cooling liquid in the cooling liquid circuit 16 is indicated by arrows.
  • a cooling liquid pump 32 conveys the cooling liquid from a suction line 30 via the cylinder block 14 and the cylinder head 12 into a return line 28. Between this and the suction line 30, a cooler 18 is connected, which cooperates with a fan 20.
  • Parallel to the radiator 18 is a bypass line 24 and a heating heat exchanger 22, wherein the flow through the radiator 18 and the bypass line 24 is controlled by a control valve 26.
  • a differential pressure sensor 34 is provided which detects the differential pressure between the suction side and the pressure side of the coolant pump 32.
  • a pressure sensor 36 is arranged on the pressure side of the cooling liquid pump 32, which may be driven electrically or mechanically. This determines the absolute pressure of the coolant to the environment.
  • a temperature sensor 80 and a throttle valve 78 located at the output of the cylinder head 12 of the internal combustion engine 10, a temperature sensor 80 and a throttle valve 78.
  • the differential pressure sensor 34, the pressure sensor 36 and the temperature sensor 80 are connected via signal lines to a control unit 76, the u.a. the monitoring of the cooling circuit 16 takes over.
  • control unit 76 a volume flow characteristic 42, temperature characteristics 46 and 52 as well as deviation characteristics 56 and 58 are stored in connection with an evaluation logic according to FIG.
  • the control unit 76 receives in addition to a drive signal 38 of the coolant pump 32, a differential pressure signal 40 of the differential pressure sensor 34 and a coolant temperature signal 44 of the temperature sensor 80, a speed signal 48 and a load signal 50 of the internal combustion engine 10.
  • the control unit 76 determines from the drive signal 38 of the coolant pump 32 and the differential pressure signal 40 with Help the volume flow map 42 is an actual value of the volume flow, from which they with the help of the coolant temperature signal 44 and a temperature map 46 for a reference component, such as the cylinder block 14 or the Cylinder head 12, an actual value for the temperature of the reference member 12, 14 calculated. It also forms from the speed signal 48 and the load signal 50 of the internal combustion engine 10 in conjunction with another temperature map 52 for the reference component 12, 14, a target value for the temperature of the reference member 12, 14 and forms the difference between the desired value and the actual value in a comparator module 54. Finally, the control unit 76 determines an allowable upper deviation from the speed signal 48 and the load signal 50 having a deviation map 56.
  • a permissible lower deviation is determined with a further deviation map 58.
  • the permissible deviations are compared in difference formers 60 and 62 with the difference from the comparator module 54. If the result is greater than or equal to one, a signal output 64 generates an output signal 66, from which a fault in the coolant circuit 16 can be deduced.
  • a setpoint value for the differential pressure is determined with the aid of a differential pressure characteristic diagram 68 and the difference with the actual value of the differential pressure according to the differential pressure signal 40 is formed with the comparator module 54.
  • the difference thus formed is compared with allowable deviations in the subtractors 60 and 62, and also the signal output 64 produces an output signal when the result is equal to or greater than one. Deviations are determined in the same way as in the evaluation logic of FIG. 2.
  • the evaluation logic according to FIG. 4 differs from the evaluation logic according to FIG. 3 in that the volume flow is regulated by a throttle valve 78.
  • the desired value of the differential pressure from the drive signal 38 of the coolant pump 32 and a valve position signal 70 of the throttle valve 78 is determined by means of a differential pressure map 82.
  • the actual value of the differential pressure is calculated from the coolant temperature signal 44 and a pressure signal 72 for the pressure of the coolant to the environment by means of a differential pressure map 74.
  • the comparator 54 forms the difference between the setpoint and the actual value of the differential pressure. Subsequently, the difference is compared as in the evaluation logic of FIG. 3 with allowable lower and upper deviations and generates a corresponding output signal when the result is greater than or equal to one.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Claims (11)

  1. Procédé de surveillance d'un circuit de liquide de refroidissement (16) d'un moteur à combustion interne (10) comportant au moins un échangeur de chaleur (18, 22), une vanne de régulation (26), une pompe de liquide de refroidissement (32) et une unité de commande électronique (76),
    caractérisé en ce qu'
    à partir des paramètres de fonctionnement du moteur à combustion interne (10), à l'aide de champs de caractéristiques de déviation (56, 58), l'unité de commande (76) prédéfinit une déviation supérieure et inférieure autorisées d'un paramètre de référence par rapport à une valeur de consigne et compare celle-ci à la différence entre une valeur de consigne et une valeur réelle du paramètre de référence,
    la valeur réelle étant déterminée à partir des paramètres du débit volumique du liquide de refroidissement, le cas échéant à l'aide de champs de caractéristiques (42, 46, 74).
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    - le paramètre de référence est la température d'une pièce de référence (12, 14),
    - à partir de la différence de pression entre le côté pression et le côté aspiration d'un point d'étranglement (32) dans la veine principale du liquide de refroidissement et d'un signal de commande (38) de la pompe de liquide de refroidissement (32), à l'aide d'un champ de caractéristiques de débit volumique (42), on détermine la valeur réelle d'un débit volumique d'un liquide de refroidissement,
    - à partir de la valeur réelle du débit volumique et d'une température de liquide de refroidissement, à l'aide d'un champ de caractéristiques de température (46) de la pièce de référence (12, 14) on détermine la valeur réelle de la température de la pièce de référence,
    - à partir de la vitesse de rotation de la charge du moteur à combustion interne (10), à l'aide d'un autre champ de caractéristiques de température (52) on détermine une valeur de consigne de la température de la pièce de référence (12, 14),
    - on forme la différence entre la valeur réelle et la valeur de consigne de la température de la pièce de référence (12, 14),
    - à partir de la vitesse de rotation et de la charge du moteur à combustion interne (10), à l'aide d'un champ de déviation (56) on détermine une déviation inférieure autorisée de la température de la pièce de référence (12, 14) et à l'aide d'un autre champ de caractéristiques de déviation (58) on détermine une déviation supérieure autorisée de la température de la pièce de référence (12, 14), et
    - on compare la différence de la valeur réelle et de la valeur de consigne de la température de la pièce de référence (12, 14) à la déviation inférieure et supérieure autorisées de la température de la pièce de référence et on génère un signal de sortie si le résultat de la comparaison est supérieur ou égal à l'unité.
  3. Procédé selon la revendication 2,
    caractérisé en ce que
    la pièce de référence est la paroi du bloc-cylindre (14) ou de la culasse (12) d'un moteur à combustion interne à piston linéaire (10).
  4. Procédé selon l'une des revendications précédentes,
    caractérisé en ce qu'
    on saisit la température du liquide de refroidissement à la sortie du moteur à combustion interne (10).
  5. Procédé selon la revendication 1,
    caractérisé en ce que
    - le paramètre de référence est la différence de pression entre le côté pression et le côté aspiration du point d'étranglement (32, 78) de la veine principale de liquide de refroidissement,
    - à partir d'un signal de commande (38) de la pompe de liquide de refroidissement (32), à l'aide d'un champ de caractéristiques de différence de pression (68) on détermine une valeur de consigne pour la différence de pression entre le côté pression et le côté aspiration du point d'étranglement (32, 78),
    - on forme la différence entre la valeur de consigne et la valeur réelle mesurée de la différence de pression entre le côté pression et le côté aspiration du point d'étranglement (32, 78),
    - on forme la différence entre la valeur de consigne et la valeur réelle mesurée de la différence de pression entre le côté pression et le côté aspiration du point d'étranglement (32, 78),
    - à partir de la vitesse de rotation et de la charge du moteur à combustion interne (10), à l'aide d'un champ de caractéristiques de déviation (56) on détermine une déviation inférieure autorisée de la différence de pression et à l'aide d'un autre champ de caractéristiques de déviation (58) on détermine une déviation supérieure autorisée de la différence de pression, et
    - on compare la différence entre la valeur de consigne et la valeur réelle de la différence de pression avec la déviation inférieure autorisée et la déviation supérieure autorisée de la différence de pression, et on génère un signal de sortie si le résultat de la comparaison est supérieur ou égal à l'unité.
  6. Procédé selon l'une des revendications précédentes,
    caractérisé en ce que
    la pompe de liquide de refroidissement (32) constitue le point d'étranglement.
  7. Procédé selon la revendication 1,
    caractérisé en ce que
    - le paramètre de référence est la différence de pression entre le côté pression et le côté aspiration du point d'étranglement (32, 78) dans la veine principale du liquide de refroidissement,
    - à partir d'un signal de commande (38) de la pompe de liquide de refroidissement (32) et de la position d'une soupape d'étranglement (78), à l'aide d'un champ de caractéristiques de différence de pression (82) on détermine une valeur de consigne d'une différence de pression,
    - à partir de la température du liquide de refroidissement, à la sortie du moteur à combustion interne (10) et d'une pression absolue du liquide de refroidissement en aval de la pompe de liquide de refroidissement (32), à l'aide d'un autre champ de caractéristiques de différence de pression (74) on détermine la valeur réelle de la différence de pression,
    - à partir de la vitesse de rotation et de la charge du moteur à combustion interne (10), à l'aide d'un champ de caractéristiques de déviation (56) on détermine une déviation inférieure autorisée de la différence de pression et à l'aide d'un autre champ de caractéristiques de déviation (58) on détermine une déviation supérieure autorisée de la différence de pression, et
    - on compare la différence entre la valeur de consigne et la valeur réelle de la différence de pression avec la déviation inférieure et la déviation supérieure autorisées de la différence de pression, et on génère un signal de sortie (66) si le résultat de la comparaison est supérieur ou égal à l'unité.
  8. Procédé selon l'une des revendications précédentes,
    caractérisé en ce qu'
    on enregistre dans un champ de caractéristiques, une augmentation de température correcte du liquide de refroidissement pendant la phase de démarrage du moteur à combustion interne (10), dans une unité de commande (74), et on la compare avec la valeur réelle de l'augmentation de température que l'on détermine par la dérivée en fonction du temps de la température du liquide de refroidissement.
  9. Application d'un moteur à combustion interne (10) avec un circuit de liquide de refroidissement (16) pour la mise en place du procédé selon l'une des revendications précédentes,
    caractérisée en ce qu'
    en parallèle à la pompe de liquide de refroidissement (32) on a un capteur de différence de pression (34).
  10. Application d'un moteur à combustion interne selon la revendication 9,
    caractérisée en ce qu'
    en aval de la pompe de liquide de refroidissement (32) on a un capteur de pression (36) pour saisir la pression absolue du liquide de refroidissement par rapport à l'environnement.
  11. Application d'un moteur à combustion interne selon la revendication 9,
    caractérisée par
    un capteur de température (80) à la sortie du liquide de refroidissement du moteur à combustion interne (10).
EP02732398A 2001-06-12 2002-04-17 Procede de surveillance d'un circuit de refroidissement dans un moteur a combustion interne Expired - Lifetime EP1399656B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10128423A DE10128423A1 (de) 2001-06-12 2001-06-12 Verfahren zum Überwachen eines Kühlflüssigkeitskreislaufs einer Brennkraftmaschine
DE10128423 2001-06-12
PCT/DE2002/001417 WO2002101210A1 (fr) 2001-06-12 2002-04-17 Procede de surveillance d'un circuit de refroidissement dans un moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1399656A1 EP1399656A1 (fr) 2004-03-24
EP1399656B1 true EP1399656B1 (fr) 2007-08-22

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EP02732398A Expired - Lifetime EP1399656B1 (fr) 2001-06-12 2002-04-17 Procede de surveillance d'un circuit de refroidissement dans un moteur a combustion interne

Country Status (6)

Country Link
US (1) US6851399B2 (fr)
EP (1) EP1399656B1 (fr)
JP (1) JP4069068B2 (fr)
KR (1) KR20030077527A (fr)
DE (2) DE10128423A1 (fr)
WO (1) WO2002101210A1 (fr)

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* Cited by examiner, † Cited by third party
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DE102008040283A1 (de) * 2008-07-09 2010-01-14 Zf Friedrichshafen Ag Kühlsystem für ein Fahrzeug

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10342935B4 (de) * 2003-09-17 2015-04-30 Robert Bosch Gmbh Verbrennungskraftmaschine mit einem Kühlkreislauf
DE602005018164D1 (de) * 2004-01-13 2010-01-21 Koninkl Philips Electronics Nv Flüssigkeitsströmungssensor für röntgenröhren
GB2420846B (en) 2004-12-04 2009-07-08 Ford Global Technologies Llc A cooling system for a motor vehicle engine
US8024149B2 (en) * 2006-08-03 2011-09-20 Titanium Metals Corporation Overheat detection system
US8869756B2 (en) * 2008-12-10 2014-10-28 Ford Global Technologies, Llc Cooling system and method for a vehicle engine
DE102009018012B4 (de) * 2009-04-18 2021-02-04 Daimler Ag Verfahren zum Steuern des Systemdrucks in einem Kühlmittelkreislauf
JP5251844B2 (ja) * 2009-11-24 2013-07-31 トヨタ自動車株式会社 冷却装置の異常判定装置および冷却装置の異常判定方法
EP2636866A1 (fr) * 2010-11-01 2013-09-11 Toyota Jidosha Kabushiki Kaisha Système de refroidissement pour moteur à combustion interne
US20130019819A1 (en) * 2011-07-18 2013-01-24 Caterpillar Inc. Coolant circuit for engine with bypass line
DE102011108030B4 (de) 2011-07-19 2025-02-13 Daimler Truck AG Verfahren zum Steuern des Systemdrucks in einem Kühlmittelkreislauf für eine Brennkraftmaschine
JP5786778B2 (ja) * 2012-03-22 2015-09-30 トヨタ自動車株式会社 エンジンの冷却制御装置
FR3011273B1 (fr) * 2013-09-30 2015-10-09 Peugeot Citroen Automobiles Sa Procede de regulation thermique d'un moteur a combustion interne en fonction du couple et du regime moteur
FR3038345A1 (fr) * 2015-07-01 2017-01-06 Peugeot Citroen Automobiles Sa Procede d’estimation du debit de liquide de refroidissement dans un circuit de refroidissement pour moteur thermique
US10844772B2 (en) 2018-03-15 2020-11-24 GM Global Technology Operations LLC Thermal management system and method for a vehicle propulsion system
KR102552164B1 (ko) * 2018-10-22 2023-07-05 현대자동차주식회사 차량의 냉각수 상태 판단 방법
DE102019202872A1 (de) * 2019-03-04 2020-09-10 Audi Ag Kühlmittelausgleichsanordnung, Kraftfahrzeug mit einer solchen und Verfahren zur Druckregulierung in einem Kühlkreislauf

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6181517A (ja) * 1984-09-28 1986-04-25 Nissan Motor Co Ltd 内燃機関の沸騰冷却装置
JPH05106436A (ja) * 1991-10-16 1993-04-27 Nissan Motor Co Ltd エンジンの冷却装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062231A (en) * 1976-05-07 1977-12-13 United Technologies Corporation Engine cooling system diagnostics
JPS5471239A (en) * 1977-11-17 1979-06-07 Kubota Ltd Cooling ability surveilance device of water-cooling type cooler
DE4109498B4 (de) 1991-03-22 2006-09-14 Robert Bosch Gmbh Vorrichtung und Verfahren zur Regelung der Temperatur einer Brennkraftmaschine
US5201285A (en) 1991-10-18 1993-04-13 Touchstone, Inc. Controlled cooling system for a turbocharged internal combustion engine
FR2693231B1 (fr) 1992-07-06 1994-09-30 Valeo Thermique Moteur Sa Dispositif de refroidissement pour moteur de véhicule automobile.
FR2793842B1 (fr) 1999-05-17 2002-06-14 Valeo Thermique Moteur Sa Dispositif electronique de regulation du refroidissement d'un moteur thermique de vehicule automobile
JP4337207B2 (ja) * 2000-02-10 2009-09-30 株式会社デンソー 液冷式内燃機関の冷却装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6181517A (ja) * 1984-09-28 1986-04-25 Nissan Motor Co Ltd 内燃機関の沸騰冷却装置
JPH05106436A (ja) * 1991-10-16 1993-04-27 Nissan Motor Co Ltd エンジンの冷却装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008040283A1 (de) * 2008-07-09 2010-01-14 Zf Friedrichshafen Ag Kühlsystem für ein Fahrzeug

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KR20030077527A (ko) 2003-10-01
EP1399656A1 (fr) 2004-03-24
DE50210765D1 (de) 2007-10-04
DE10128423A1 (de) 2003-01-02
JP2004529287A (ja) 2004-09-24
US6851399B2 (en) 2005-02-08
JP4069068B2 (ja) 2008-03-26
US20040011305A1 (en) 2004-01-22
WO2002101210A1 (fr) 2002-12-19

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