WO2003106825A1 - Procede pour faire fonctionner un moteur a combustion interne a refroidissement liquide - Google Patents

Procede pour faire fonctionner un moteur a combustion interne a refroidissement liquide Download PDF

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Publication number
WO2003106825A1
WO2003106825A1 PCT/DE2003/001883 DE0301883W WO03106825A1 WO 2003106825 A1 WO2003106825 A1 WO 2003106825A1 DE 0301883 W DE0301883 W DE 0301883W WO 03106825 A1 WO03106825 A1 WO 03106825A1
Authority
WO
WIPO (PCT)
Prior art keywords
coolant
internal combustion
combustion engine
oil
temperature
Prior art date
Application number
PCT/DE2003/001883
Other languages
German (de)
English (en)
Inventor
Erwin Bauer
Original Assignee
Siemens Aktiengesellschaft
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 Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2003106825A1 publication Critical patent/WO2003106825A1/fr

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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
    • F01P7/162—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
    • 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
    • F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
    • 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
    • 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
    • F01P2060/04—Lubricant cooler
    • 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
    • F01P2060/04—Lubricant cooler
    • F01P2060/045—Lubricant cooler for transmissions

Definitions

  • the invention relates to a method for operating a liquid-cooled internal combustion engine according to the preamble of patent claim 1.
  • the operating behavior of internal combustion engines is significantly influenced by their operating temperature. Reaching the operating temperature quickly not only has a positive effect on the emission behavior and fuel consumption, but also on the comfort of the occupants with regard to rapid heating of the vehicle interior of the vehicle driven by the internal combustion engine.
  • cooling must be carried out. Forced cooling by means of a coolant has largely prevailed.
  • the cylinder and cylinder head are double-walled.
  • the intermediate space is filled with a cooling liquid and designed so that a coolant circuit is created.
  • a coolant a mixture of water, antifreeze and case-specific inhibitors.
  • Such conventional cooling systems usually include one either directly or indirectly via a movable traction means, e.g. V-belt coolant pump driven by the internal combustion engine and an expansion thermostat.
  • the coolant pump therefore works in dependence on the engine speed and is designed in such a way that a sufficient coolant flow is made available in every operating state of the internal combustion engine.
  • the coolant temperature is regulated in order to maintain a constant coolant temperature and thus also the internal combustion engine temperature.
  • a temperature-dependent expansion regulator is provided, which actuates a valve which, when the coolant temperature drops, leads an increasing coolant flow past the cooler.
  • Expansion regulator and valve form a structural unit and are generally referred to as a radiator thermostat.
  • the radiator thermostat is initially closed and the coolant circulation takes place exclusively in a bypass circuit of the internal combustion engine. This is also known as a "small cooling circuit”. Above a certain coolant temperature, the cooler thermostat opens and the coolant flow flows to the cooler, where it is cooled due to the head wind and / or the cooler fan and returned to the internal combustion engine. This is also known as a "large cooling circuit”.
  • DE 32 38 919 AI describes a method and a device for operating a liquid-cooled internal combustion engine.
  • the warm coolant is transported to an insulated reservoir.
  • the warmed coolant is conducted from the reservoir back into the channels of the cylinder block, so that the cylinder block warms up before starting.
  • an electrically driven coolant pump is provided, with which the coolant is pumped out of the channels of the cylinder block to the reservoir and back again.
  • the reservoir is divided by a reciprocating piston into two chambers, each of which is connected to an associated end of the cooling channels of the cylinder block by a line.
  • the coolant pump which can be switched electrically with regard to its pumping direction, is interposed in one of the lines.
  • EP 01 101 914 A2 discloses a liquid-cooled internal combustion engine with a crankcase, at least one cylinder head, an exhaust gas manifold, an exhaust gas turbocharger, a charge air heat exchanger and a raw water heat exchanger, which together with a coolant pump to form a cooling middle circuit are interconnected.
  • the coolant circuit in the flow direction behind the coolant pump is divided into an engine cooling circuit by the internal combustion engine with the crankcase and the cylinder head, an exhaust gas circuit with the exhaust gas collector pipe and the exhaust gas turbocharger, and a heat exchanger circuit with the charge air heat exchanger and the raw water heat exchanger in a parallel arrangement, these circles are brought together again before the coolant pump.
  • a gear oil heat exchanger can also be connected in parallel with the charge air heat exchanger.
  • DE 196 37 817 AI describes a device for cooling and preheating, in particular gear oil in internal combustion engines for vehicles, with an expansion tank, with at least one water cooler which can be switched on by means of a motor thermostat when a predetermined temperature is reached in the cooling circuit and with a single one Water / oil heat exchanger, which can be used both for heating and for cooling operating materials, especially gear oil.
  • the flow rate of the water / oil heat exchanger is in the
  • Heating phase can be branched off from the main cooling circuit of the internal combustion engine by means of a valve unit.
  • the supply flow is taken from the low-temperature range of the water cooler by means of the same valve unit in the secondary coolant flow.
  • the invention is based on the object of specifying a method for operating a liquid-cooled internal combustion engine with which rapid heating of both the internal combustion engine itself and of operating materials of the internal combustion engine, in particular engine oil and / or transmission oil, can be achieved.
  • the coolant is circulated within a closed coolant circuit by means of a coolant pump.
  • the coolant volume flow can be switched from a first coolant circuit connecting a coolant inlet and a coolant outlet of the internal combustion engine to a second coolant circuit containing a cooler of the internal combustion engine by means of an actuator.
  • the coolant volume flow can be divided into a first coolant volume flow in the first coolant circuit and a second coolant volume flow into a bypass containing at least one oil / coolant heat exchanger.
  • the actuator can be actuated in such a way that the coolant volume flow is passed exclusively via the bypass containing oil / coolant heat exchanger, which leads to rapid heating of the operating materials such as engine oil and / or gear oil and / or hydraulic oil ,
  • a particularly rapid heating of the internal combustion engine and, consequently, of the operating materials results if, based on cold start conditions of the internal combustion engine, there is initially no circulation of the coolant, with the result that the relatively small coolant volume located in the cooling jacket of the internal combustion engine heats up very quickly.
  • this is achieved by using an electrically driven coolant pump which is switched off at this operating point of the internal combustion engine.
  • a coolant pump mechanically driven by the internal combustion engine can also be used , it only has to be ensured that it can be uncoupled, for example, by means of a gear.
  • the warmed up coolant is passed through a bypass in which an oil / coolant heat exchanger is switched on. This leads to rapid heating of the operating fluids engine oil, gear oil, hydraulic oil and thus to an earlier reaching of the internal combustion engine temperature.
  • a coolant volume flow through the oil-coolant heat exchanger can be set, in which an optimal heat transfer in the oil-coolant heat exchanger is established.
  • the method according to the invention leads to a partially faster heating of the coolant and indirectly to a faster heating of the operating materials supplied to the oil-coolant heat exchanger, such as, for example, engine oil. Due to the lower oil viscosity, which is lower at higher temperatures, fuel consumption is reduced and more favorable emission behavior can also be observed.
  • 1 is a schematic representation of a coolant circuit of an internal combustion engine during a cold start
  • Fig. 2 shows a schematic representation of a coolant circuit during the warm-up of the internal combustion engine
  • Fig. 3 shows a schematic representation of a coolant circuit when the internal combustion engine is at operating temperature.
  • the coolant circuit of the internal combustion engine 10 has a coolant pump 11, which in the exemplary embodiment shown is designed as an electrically driven coolant pump.
  • a coolant pump that is reversible with regard to its pumping direction can also be used, for example, and the speed of rotation can also be regulated.
  • the coolant pump is designed as a pump mechanically driven by the internal combustion engine. In a preferred one
  • this mechanical coolant pump can be decoupled from the internal combustion engine by means of a device, for example a clutch, and its pumping direction can be reversed, for example, by means of a gear.
  • an electrically controllable actuator 12 is provided in the form of a 3/2 way valve.
  • This actuator has three connections I, II, III, in the following the connections I and II are also referred to as inputs and the connection III also as an output.
  • the coolant volume flow can be divided according to the operating range of the internal combustion engine 10, as will be explained in more detail later.
  • the internal combustion engine 10 has one, not shown
  • Cooling jacket around the cylinder 13 and the coolant pump 11 conveys the coolant into the cooling jacket around the cylinder 13, it flushes around it and reaches the cylinder head through through bores.
  • a coolant outlet 14 is provided, to which a line 15 is connected.
  • the line 15 leads to a coolant inlet 17 of a cooler 18.
  • the waste heat generated in the internal combustion engine 10 is dissipated to the surroundings via the coolant.
  • at least one electrically driven fan 19 is additionally provided. The fan 19 is generally switched on or off in a temperature-controlled manner.
  • a coolant outlet 20 of the cooler 18 is connected via a line 21 to the input I of the actuator 12.
  • a branch is provided for a bypass line 16, which leads to the input II of the actuator 12.
  • the output III of the actuator 12 is connected via a line 23 to an inlet (suction side) of the coolant pump 11, which is not specified.
  • the outlet (pump side) of the coolant pump 11 is connected via a line 22 to an engine-side coolant inlet 24.
  • a bypass line 30 branches off from the line 15 in the vicinity of the engine-specific coolant outlet 14 and opens into the line 23, which connects the actuator 12 to the suction side of the coolant pump 11.
  • an oil-coolant heat exchanger 31 each with a coolant inlet 32 and a coolant outlet 33, as well as an inlet leave on 34 and an outlet 35 for the oil to be heated.
  • the oil to be heated is preferably the lubricating oil (engine oil) of the internal combustion engine 10 or the gear oil, a gearbox connected to the internal combustion engine 10 for gear selection. Hydraulic oils, for example for servo pumps, can also be heated by the coolant in the oil-coolant heat exchanger 31.
  • the oil-coolant heat exchanger 31 is arranged in the vicinity of the Brerin engine in order to keep the line length and thus the volumes of the coolant to be transported to the oil-coolant heat exchanger 31 small.
  • the oil-coolant heat exchanger 31 can also be designed such that there are several inlets and outlets for different fluids to be heated, for example engine oil and transmission oil, each of which absorbs part of the heat of the coolant in separate chambers.
  • the actuator 12 is connected to a control device 26 via a control line 25.
  • a control device 26 Such electronic control devices, which as a rule contain one or more microprocessors and a time counter 29 and which, in addition to fuel injection, also take on a large number of other control and regulating tasks for the internal combustion engine 10, are known per se, so that in the following only the related the relevant structure and its mode of operation are discussed.
  • a temperature sensor 27 on the coolant outlet 14 on the engine side supplies a signal TKW corresponding to the temperature of the coolant at the engine's own outlet to the control device 26 for the actuation of the actuator 12 as required designated, fed.
  • the individual actuators and components that are necessary for operating the internal combustion engine 10 are controlled via output signals AS.
  • the electrical coolant pump 11 and the fan 19 are likewise connected to the control device 26 via control lines.
  • control device 26 is connected to a memory 28, in which, among other things, predetermined threshold values SW1-SW4 for the temperature of the coolant TKW are stored. .
  • the signal TKW of the temperature sensor 27 is read in at the start of the internal combustion engine 10 and compared with a predetermined threshold value SW1, which characterizes a cold internal combustion engine and is stored in the memory 28. If the value of the coolant temperature is below this threshold value SW1, a cold start of the internal combustion engine is concluded and the actuator 12 is controlled by an electrical signal from the control device 26 such that the connection between the input I and the
  • Exit III as well as between the entrance II and the exit III is interrupted.
  • the position of a rotary valve associated with the actuator 12 is shown schematically.
  • the cooling circuit can be interrupted in a simple manner by switching off the electric motor of the coolant pump. Since the coolant is no longer circulating here, one speaks of a "standing coolant”. As a result, the small volume of coolant contained in the cooling jacket of the internal combustion engine 10 heats up very quickly. After the predetermined period of time determined by tests has elapsed, the coolant pump is switched on and the heated coolant flows via the bypass 30 and thus to the oil / coolant heat exchanger 31.
  • a further possibility of achieving particularly rapid heating of the internal combustion engine 10 and, as a result, rapid heating of the oil, is to use an electrical coolant pump which is reversible with regard to its pumping direction.
  • a coolant pump will be recognized of a cold start of the internal combustion engine for a period of time T in such a way that a coolant volume flow flows via line 22, the cooling jacket of internal combustion engine 10 to the location of temperature sensor 27.
  • the time period T before during which the coolant pump 11 is activated so that a coolant flow takes place up to the location of the temperature sensor 27, is determined experimentally for the internal combustion engine 10 in question. It essentially depends on the structural design of the internal combustion engine, in particular on the mass, the number of cylinders and the dimensioning of the cooling jacket.
  • This time period T before is monitored by the time counter 29 of the control device 26 and is generally in the range of seconds.
  • the coolant pump 11 is deactivated again.
  • the signal from the temperature sensor 27 is constantly read in and compared with a further threshold value SW2, which characterizes a warm internal combustion engine.
  • the coolant pump 11 is reactivated after a further period of time T ⁇ ait, which is also determined experimentally. However, the coolant pump is now controlled in such a way that the coolant is now conveyed in the opposite direction by the internal combustion engine 10.
  • the time period T ruc k; during which the coolant pump 11 pumps the coolant 11 in the opposite direction is preferably identical to the above-mentioned time period T before .
  • an electrical coolant pump that is adjustable in speed also has the advantage that it can be used to set a coolant volume flow in which there is an optimal heat transfer between coolant and oil in the oil-coolant heat exchanger 31.
  • FIG. 2 shows a schematic representation of the coolant circuit while the internal combustion engine is warming up. If the temperature TKW exceeds a further threshold value SW3, by actuating the actuator 12, the input II is connected to the output III, so that a coolant volume flow both via the bypass 30 and the oil / coolant heat exchanger 31, and also via the small coolant circuit, i.e. can flow through the bypass 16.
  • the coolant pump 11 is controlled in such a way that a continuous coolant volume flow can circulate in a single direction.
  • the input I is connected to the output III by actuating the actuator 12, so that a coolant volume flow through both the bypass 30 and the oil-coolant heat exchanger 31 as also via the large coolant circuit, d. H. can flow through the cooler 18.
  • the bypass line 16 is switched off, i.e. there is no connection between the input II and the output III of the actuator 12 (FIG. 3). The direction of the coolant volume flow is again drawn with arrow symbols.
  • a temperature-controlled switching valve in the form of a Thermostatic valve can be used instead of the electrically controlled actuator 12. It is only crucial that both the small and the large cooling circuit can be shut off.

Landscapes

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

Abstract

Selon invention, une pompe à liquide de refroidissement (11) fait circuler le liquide de refroidissement en fonction des besoins dans un circuit fermé. En fonction d'une grandeur (TKW) caractérisant la température du moteur à combustion interne (10), un actionneur (10) permet de faire passer le flux de volumétrique de liquide de refroidissement d'un premier circuit de refroidissement (15, 16, 22, 23), reliant une entrée de liquide de refroidissement (24) et une sortie de liquide de refroidissement (14) du moteur à combustion interne (10), à un deuxième circuit de refroidissement (15, 21, 22, 23) comportant un radiateur (18) du moteur à combustion interne (10). En fonction de ladite grandeur (TKW), le flux volumétrique de liquide de refroidissement (14) peut être divisé, au niveau de la sortie de liquide de refroidissement (14) du moteur à combustion interne (10), en un premier flux de volumétrique de liquide de refroidissement dans le premier circuit de refroidissement (15, 16, 22, 23) et en un deuxième flux volumétrique de liquide de refroidissement dans une conduite de dérivation (30) contenant au moins un échangeur de chaleur huile-liquide de refroidissement (31).
PCT/DE2003/001883 2002-06-17 2003-06-04 Procede pour faire fonctionner un moteur a combustion interne a refroidissement liquide WO2003106825A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002126928 DE10226928A1 (de) 2002-06-17 2002-06-17 Verfahren zum Betrieb einer flüssigkeitsgekühlten Brennkraftmaschine
DE10226928.9 2002-06-17

Publications (1)

Publication Number Publication Date
WO2003106825A1 true WO2003106825A1 (fr) 2003-12-24

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ID=29719159

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PCT/DE2003/001883 WO2003106825A1 (fr) 2002-06-17 2003-06-04 Procede pour faire fonctionner un moteur a combustion interne a refroidissement liquide

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Country Link
DE (1) DE10226928A1 (fr)
WO (1) WO2003106825A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7717070B2 (en) * 2004-05-18 2010-05-18 Gm Global Technology Operations, Inc. Optimized cooling system for a motorized vehicle
WO2013068419A1 (fr) * 2011-11-09 2013-05-16 Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg Dispositif de refroidissement pour chaîne cinématique, et procédé pour le faire fonctionner
DE102015006302A1 (de) 2015-05-16 2016-11-17 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Kühlsystem mit einer Kühlmittelpumpe für eine Brennkraftmaschine
DE102015006303A1 (de) 2015-05-16 2016-11-17 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Kühlsystem mit einer Kühlmittelpumpe für eine Brennkraftmaschine
WO2020038221A1 (fr) * 2018-08-22 2020-02-27 贵州吉利发动机有限公司 Système de refroidissement de moteur

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DE102004061426A1 (de) 2004-12-21 2006-07-06 Daimlerchrysler Ag System und Verfahren zum Temperieren eines Motoröls einer Brennkraftmaschine eines Kraftfahrzeugs
DE102008032130B4 (de) * 2008-07-08 2010-07-01 Continental Automotive Gmbh Verfahren und Vorrichtung zur Diagnose einer Kühlmittelpumpe für eine Brennkraftmaschine
DE102009020186B4 (de) 2009-05-06 2011-07-14 Audi Ag, 85057 Ausfallsicherer Drehsteller für einen Kühlmittelkreislauf
DE102009056575B4 (de) 2009-12-01 2014-01-02 Continental Automotive Gmbh Verfahren und Vorrichtung zum Ermitteln eines modellierten Temperaturwertes bei einer Brennkraftmaschine und Verfahren zur Plausibilisierung eines Temperatursensors
DE102009056783B4 (de) 2009-12-03 2014-01-02 Continental Automotive Gmbh Verfahren und Vorrichtung zum Ermitteln eines vereinfachtmodellierten Kühlmitteltemperaturwertes für einen Kühlkreislauf einer Brennkraftmaschine
DE102012204492B4 (de) 2012-03-21 2013-12-12 Continental Automotive Gmbh Verfahren zum Überprüfen der Funktionstüchtigkeit von Hydraulikkomponenten im Kühlkreislauf eines Kraftfahrzeuges
DE102012110747A1 (de) * 2012-11-09 2014-05-15 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Brennkraftmaschine mit einer Regenerationsvorrichtung zum Aufheizen von Motoröl

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US5215044A (en) * 1991-02-11 1993-06-01 Behr Gmbh & Co. Cooling system for a vehicle having an internal-combustion engine
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7717070B2 (en) * 2004-05-18 2010-05-18 Gm Global Technology Operations, Inc. Optimized cooling system for a motorized vehicle
WO2013068419A1 (fr) * 2011-11-09 2013-05-16 Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg Dispositif de refroidissement pour chaîne cinématique, et procédé pour le faire fonctionner
CN103975180A (zh) * 2011-11-09 2014-08-06 格特拉格传动机构和齿轮工厂赫尔曼·哈根迈尔有限公司&两合公司 动力传动系冷却装置及其运行方法
US9683561B2 (en) 2011-11-09 2017-06-20 Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg Drive train cooling arrangement and method for operating same
DE102015006302A1 (de) 2015-05-16 2016-11-17 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Kühlsystem mit einer Kühlmittelpumpe für eine Brennkraftmaschine
DE102015006303A1 (de) 2015-05-16 2016-11-17 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Kühlsystem mit einer Kühlmittelpumpe für eine Brennkraftmaschine
GB2538587A (en) * 2015-05-16 2016-11-23 Gm Global Tech Operations Llc Cooling system with a coolant pump for an internal combustion engine
US10190479B2 (en) 2015-05-16 2019-01-29 GM Global Technology Operations LLC Cooling system with a coolant pump for an internal combustion engine
WO2020038221A1 (fr) * 2018-08-22 2020-02-27 贵州吉利发动机有限公司 Système de refroidissement de moteur

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