WO2015124263A1 - Système de refroidissement d'un moteur à combustion interne - Google Patents

Système de refroidissement d'un moteur à combustion interne Download PDF

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Publication number
WO2015124263A1
WO2015124263A1 PCT/EP2015/000232 EP2015000232W WO2015124263A1 WO 2015124263 A1 WO2015124263 A1 WO 2015124263A1 EP 2015000232 W EP2015000232 W EP 2015000232W WO 2015124263 A1 WO2015124263 A1 WO 2015124263A1
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
temperature
low
heating
cooling system
Prior art date
Application number
PCT/EP2015/000232
Other languages
German (de)
English (en)
Inventor
Helmut Rall
Ulrich Tröstler
Original Assignee
Mtu Friedrichshafen Gmbh
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 Mtu Friedrichshafen Gmbh filed Critical Mtu Friedrichshafen Gmbh
Publication of WO2015124263A1 publication Critical patent/WO2015124263A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/14—Indicating devices; Other safety devices
    • F01P11/20—Indicating devices; Other safety devices concerning atmospheric freezing conditions, e.g. automatically draining or heating during frosty weather
    • 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
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P2005/105—Using two or more pumps
    • 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
    • F01P2037/00—Controlling
    • F01P2037/02—Controlling starting
    • 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
    • F01P2060/02—Intercooler
    • 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
    • F01P2060/16—Outlet manifold
    • 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
    • F01P7/162—Controlling of coolant flow the coolant being liquid by thermostatic control by cutting in and out of pumps
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • F02B29/0412—Multiple heat exchangers arranged in parallel or in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N19/00—Starting aids for combustion engines, not otherwise provided for
    • F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
    • F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
    • F02N19/10—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of engine coolants

Definitions

  • the invention relates to a cooling system for an internal combustion engine and a method for controlling the temperature of an internal combustion engine.
  • Internal combustion engines are heat engines that convert the chemical energy of a fuel into mechanical energy via a combustion process.
  • Internal combustion engines used in motor vehicles, for example diesel and gasoline engines, are widespread
  • Embodiments of an internal combustion engine To dissipate the heat generated cooling systems are used in internal combustion engines, which are intended to prevent the internal combustion engine is damaged by excessive temperatures.
  • Used cooling systems cool components surrounding the hot combustion chamber, such as the cylinder tube, the cylinder head, valves and pistons. In particular, thermal overstress, combustion of the lubricating oil on the piston sliding track and uncontrolled burns due to excessive component temperatures are thus avoided.
  • direct cooling or cooling with intermediate medium can be provided. In the latter several cooling circuits are provided. So cooling systems are known which have a
  • Intercooler a low temperature recooler and a second pump are. This has the advantage that compared to the high-temperature circuit in the low-temperature circuit low Temperatures can be achieved, which allow a desired strong cooling of the charge air with corresponding increase in performance at full load.
  • the document DE 103 17 003 AI describes a cooling system with a high-temperature circuit and a low-temperature circuit, which are connected to each other via a thermostat arrangement. When the internal combustion engine warms up, coolant from the high-temperature circuit can pass into the low-temperature circuit.
  • the high-temperature circuit in the region of the internal combustion engine can be connected to a heating circuit, which is coupled to the preheater.
  • the cooling system comprises a low-temperature circuit in which a charge air cooler, a Niedertemperemr Wegkühler and a second pump are. Furthermore, one with a
  • the low-temperature circuit in particular during preheating, should only be warmed up to a certain, predeterminable temperature.
  • a valve is regularly provided in the low-temperature circuit that further heating the Low temperature circuit prevents over the temperature to be specified. It should now be avoided that this valve must be operated.
  • Preheating is arranged, wherein the heating circuit is connected to both the high-temperature circuit and the low-temperature circuit, wherein the heating circuit is connected via a thermocouple with the low-temperature circuit, which is arranged such that it closes the connection between the heating circuit and low-temperature circuit from a predetermined temperature.
  • All circuits contain the identical coolant.
  • the circuits are coupled with preheating and auxiliary heating. The heat exchange thus takes place when mixing
  • thermocouple serves, for example, a thermocouple that actuates a valve. If these are integrated in one component, this is also referred to as a thermostatic valve.
  • Thermocouple in the heating circuit for closing is approx. 20 ° C to 30 ° C.
  • the thermocouple can be designed so that it closes at a temperature of 30 ° C or even at exactly 30 ° C.
  • the valve provided in the low-temperature circuit is regularly designed so that it opens at 38 ° C. Opening the valve means that the way to the cooling system is released.
  • the beginning of the opening is at 38 ° C. But it is also possible to set the beginning of opening to about 30 ° C. It is
  • thermocouple closes before operating the valve in the low pressure circuit.
  • High temperature circuit is provided.
  • a radiator, an oil heat exchanger and / or a water pump are also provided in the high-temperature circuit.
  • At least one pump is provided in the heating circuit. If more than one preheating device is arranged in the heating circuit, it makes sense to also provide a plurality of pumps, in particular an equal number of pumps.
  • a number of check valves is arranged in the heating circuit. These block the heating circuit when the pump provided in the heating circuit is switched off. Even with the pump running in the heating circuit, it can happen that the heating circuit is shut off by the high-temperature circuit and the low-temperature circuit. This is the case when the temperature in the low-temperature circuit is already so high that the
  • Thermocouple is closed in the heating circuit and at the same time in the high-temperature circuit via the running pump in the high-temperature circuit such a high pressure level is generated that a check valve blocks. Then the pump in the heating circuit requires the coolant via a valve in the short circuit. This short circuit is required to connect the pump in the heating circuit run after the prewarming device has been switched off in order to avoid overheating of the device.
  • a method for controlling the temperature of an internal combustion engine which is provided with a cooling system with a high-temperature circuit, a low-temperature circuit and a heating circuit.
  • This method can be carried out in particular with a cooling system of the type described above. It is heated via the heating circuit coolant both in the high-temperature circuit and in the low-temperature circuit, with a
  • Thermocouple is used, that closes a connection between the heating circuit and the low temperature circuit from a predetermined temperature, so that the coolant of the low temperature circuit is no longer warmed from the predetermined temperature of the heating circuit.
  • the method can be used for preheating and / or for heating the internal combustion engine.
  • a heating of the internal combustion engine is called, if this is, d. H. if this is not working or is not in operation.
  • a heating is a warming of
  • the high temperature circuit and the low temperature circuit warmed, the need for heating in the high temperature circuit is higher.
  • the low-temperature circuit is primarily warmed up.
  • the described cooling system is characterized in that no electrical or
  • thermocouple for example, a thermocouple
  • Thermostatic valve required.
  • the presented cooling system allows preheating the cooling system with
  • FIG. 1 shows an embodiment of a cooling system.
  • FIG. 1 shows a cooling system for an internal combustion engine, which is designated overall by the reference numeral 10.
  • the cooling system 10 includes a high temperature circuit 12, a
  • Low temperature circuit 14 and a heating circuit 16 The flow directions in the circles 12, 14 and 16 is illustrated with arrows. In all circuits 12, 14 and 16 are each a means, in particular a coolant.
  • the engine 20 is an optional one
  • Exhaust heat exchanger 22 a valve 24, a high-temperature circuit radiator 26, a
  • High temperature water pump 28 and an oil heat exchanger 30 is provided.
  • a low-temperature water pump 40 In the low-temperature circuit 14 are a low-temperature water pump 40, a
  • the beginning of the opening can be around 30 ° C to 40 ° C.
  • the Opening at 38 ° C.
  • a charge air cooler 46 and a two-stage intercooler 48 having a first stage 50 and a second stage 52 are provided.
  • the illustrated embodiment has a two-stage supercharging with two low-pressure compressors and a high-pressure compressor. After each compressor, a charge air cooler is arranged. A charge air cooler after a low-pressure stage is referred to as an intercooler, which is present twice. Each intercooler is charged with half of the total amount of air. A charge air cooling after a high-pressure stage is referred to as intercooler.
  • the type of charge and the number of intercoolers are mentioned here only as an example.
  • the presented method is also in a single-stage supercharged engine with only one
  • Intercooler applicable.
  • the number of intercoolers in the illustrated embodiment is purely constructive and has no effect on the function of the cooling system 10th
  • a preheater 70, a pump 72, a first check valve 74, a second check valve 76, a third check valve 78, a fourth check valve 80 and a thermostatic valve 82 are provided as a thermocouple.
  • This thermostatic valve 82 is open to about 30 ° C.
  • the heating circuit 16 serves to the plant parts of high-temperature circuit 12 and
  • Low-temperature circuit 14 and the coolant prior to start-up of the engine 20 preheat and preheat at low load conditions, eg. At idle or partial load, or to keep warm under certain external conditions during a Zuloomens, but the fuel consumption compared to cooling systems without Keep the heating circuit low.
  • the preheater 70 and the pump 72 are turned on, so that a circulation of coolant is started with simultaneous heating. Heated coolant enters the high-temperature circuit 12 and the low-temperature circuit 14, the main need for preheating in the
  • High temperature circuit 12 is located. As soon as the coolant temperature in the low-temperature circuit 14 exceeds 30 ° C., the thermostatic valve 82 closes, so that only the high-temperature circuit 12 is heated. Thus, the thermostatic valve 82 closes before the motor-side valve 44 opens in the low-temperature circuit 14.
  • the thermostatic valve 82 closes before the motor-side valve 44 opens in the low-temperature circuit 14.
  • the pump 72 and the preheater 70 are turned on, so that additional heating energy is supplied to the heat energy generated by the internal combustion engine 20 in the coolant. This has the advantage that a fuel economy can be achieved.
  • the thermostatic valve 82 usually has no function, since only to 20 ° C to 30 ° C must be heated.
  • the thermostatic valve 82 may have the following function: At higher speeds, the coolant pressure in the high-temperature circuit 12 is so high that the high-temperature circuit 12 is disconnected from the heating circuit 16 via the check valve 74. In this case, only the low-temperature circuit 14 is connected to the heating circuit 16. Now closes the thermostatic valve 82, then promotes the pump 72 and preheating the coolant in
  • the preheater 70 then switches off automatically after a short time via an internal temperature sensor. To prevent after-heat effects, the pump 72 can still run. Without this function of the thermostatic valve 82, the control of the switch-off of the Vormérm réelles 70 designed more expensive. Then two temperature thresholds are required, a preheating to about 40 ° C to 60 ° C, a heating to about 20 ° C to 30 ° C. Two temperature thresholds and the detection of the engine operating state preheating or heating is not provided in the controller and turns out to be very expensive. In particular, the ability to heat even the low temperature circuit 14, in addition to the discharge of the engine 20 has advantages. For example, white smoke can be avoided in cold ambient conditions.
  • connection of the preheating device 70 may, for example, be load-dependent, temperature-dependent or speed-dependent.
  • a thermostatic valve 82 for example, a waxed-water thermostat can be used.
  • Cooling system and its own thermostatic valve that helps keep the circuit from cooling down

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)

Abstract

L'invention concerne un système de refroidissement (10) d'un moteur à combustion interne (20) et un procédé permettant de réguler la température du moteur à combustion interne. Le système de refroidissement (10) comporte un circuit haute température (12), un circuit basse température (14) et un circuit de chauffage (16). Le circuit de chauffage (16) est muni d'un élément thermique qui ferme la communication entre le circuit de chauffage (16) et le circuit basse température (14) à partir d'une température prédéfinie.
PCT/EP2015/000232 2014-02-20 2015-02-05 Système de refroidissement d'un moteur à combustion interne WO2015124263A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014002437.7 2014-02-20
DE102014002437.7A DE102014002437A1 (de) 2014-02-20 2014-02-20 Kühlsystem für eine Brennkraftmaschine

Publications (1)

Publication Number Publication Date
WO2015124263A1 true WO2015124263A1 (fr) 2015-08-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/000232 WO2015124263A1 (fr) 2014-02-20 2015-02-05 Système de refroidissement d'un moteur à combustion interne

Country Status (2)

Country Link
DE (1) DE102014002437A1 (fr)
WO (1) WO2015124263A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111485989A (zh) * 2019-01-28 2020-08-04 本田技研工业株式会社 内燃机的冷却水控制装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016011070A1 (de) 2016-09-14 2018-03-15 Audi Ag Verfahren zum Betreiben einer Antriebseinrichtung sowie entsprechende Antriebseinrichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB950020A (en) * 1961-12-18 1964-02-19 Manfred Behr Improvements relating to supercharged internal combustion engine cooling arrangements
US3397684A (en) * 1964-12-15 1968-08-20 Daimler Benz Ag Process and apparatus for facilitating the starting of diesel engines and the like
EP0306911A2 (fr) * 1987-09-11 1989-03-15 Firma J. Eberspächer Circuit de liquide colporteur pour dispositif de chauffage de véhicule indépendant du moteur
DE10317003A1 (de) * 2003-04-11 2004-12-09 Behr Gmbh & Co. Kg Kreislaufanordnung zur Kühlung von Ladeluft und Verfahren zum Betreiben einer derartigen Kreislaufanordnung
DE102005029918A1 (de) * 2005-04-29 2006-11-02 Mtu Friedrichshafen Gmbh Kühlsystem für eine aufgeladene Brennkraftmaschine

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
DE4139886C2 (de) * 1991-12-04 1995-03-16 Webasto Ag Fahrzeugtechnik Wärmeträgerkreislauf eines Fahrzeuges
DE4314089C1 (de) * 1993-04-29 1994-03-03 Webasto Thermosysteme Gmbh Heizkreislauf eines Fahrzeuges mit einem motorunabhängigen Heizgerät
DE19847607A1 (de) * 1998-10-15 2000-04-20 Volkswagen Ag Heizungskreislauf für Kraftfahrzeuge
JP5316819B2 (ja) * 2010-12-13 2013-10-16 三菱自動車工業株式会社 車両用暖房装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB950020A (en) * 1961-12-18 1964-02-19 Manfred Behr Improvements relating to supercharged internal combustion engine cooling arrangements
US3397684A (en) * 1964-12-15 1968-08-20 Daimler Benz Ag Process and apparatus for facilitating the starting of diesel engines and the like
EP0306911A2 (fr) * 1987-09-11 1989-03-15 Firma J. Eberspächer Circuit de liquide colporteur pour dispositif de chauffage de véhicule indépendant du moteur
DE10317003A1 (de) * 2003-04-11 2004-12-09 Behr Gmbh & Co. Kg Kreislaufanordnung zur Kühlung von Ladeluft und Verfahren zum Betreiben einer derartigen Kreislaufanordnung
DE102005029918A1 (de) * 2005-04-29 2006-11-02 Mtu Friedrichshafen Gmbh Kühlsystem für eine aufgeladene Brennkraftmaschine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111485989A (zh) * 2019-01-28 2020-08-04 本田技研工业株式会社 内燃机的冷却水控制装置
US11181036B2 (en) 2019-01-28 2021-11-23 Honda Motor Co., Ltd. Cooling water control apparatus for internal combustion engine
CN111485989B (zh) * 2019-01-28 2022-02-01 本田技研工业株式会社 内燃机的冷却水控制装置

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