EP2427638A1 - Circuit de liquide de refroidissement - Google Patents

Circuit de liquide de refroidissement

Info

Publication number
EP2427638A1
EP2427638A1 EP10719914A EP10719914A EP2427638A1 EP 2427638 A1 EP2427638 A1 EP 2427638A1 EP 10719914 A EP10719914 A EP 10719914A EP 10719914 A EP10719914 A EP 10719914A EP 2427638 A1 EP2427638 A1 EP 2427638A1
Authority
EP
European Patent Office
Prior art keywords
rotary valve
coolant
circuit
branch
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.)
Withdrawn
Application number
EP10719914A
Other languages
German (de)
English (en)
Inventor
Steffen Triebe
Dieter Lachner
Stefan Rank
Stephan Adam
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.)
Audi AG
Original Assignee
Audi AG
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 Audi AG filed Critical Audi AG
Publication of EP2427638A1 publication Critical patent/EP2427638A1/fr
Withdrawn legal-status Critical Current

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
    • F01P3/00—Liquid cooling
    • F01P3/20—Cooling circuits not specific to a single part of engine or machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/08—Details
    • F16K5/10—Means for additional adjustment of the rate of 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
    • 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
    • F01P2060/08—Cabin heater

Definitions

  • a plurality of partial circuits comprising coolant circuit of an internal combustion engine for a motor vehicle with a device for operating such a coolant circuit, in particular for controlling the coolant flow in the individual subcircuits.
  • Such coolant circuits are preferably used for the thermal management of an internal combustion engine, wherein the coolant flow between the sub-circuits of the coolant circuit is distributed by a device for operating the coolant circuit such that adjusts an optimum operating temperature of the internal combustion engine as quickly as possible.
  • DE 602 09 019 T2 shows a control valve for a cooling circuit of an internal combustion engine, wherein the circuit is traversed by a coolant and a first branch with a radiator of the engine, a second branch forming a branch line of the radiator, and one or more third branches with each having at least one hot air generator for heating the passenger compartment.
  • the control valve is formed as a body having a fluid inlet, a second branch connected to the first output, a second branch connected to the first branch and at least one second branch connected to the third branch, wherein a rotatably disposed within the body regulating member of the selective Control of the outputs is used.
  • the regulating member can also assume a position in which no output is opened.
  • a disadvantage of such a control valve is the rigidly predetermined sequence of possible positions.
  • frequent position changes are necessary, which require just as frequent rotation of Regulierorgans.
  • the fact that the control valve realizes many functions with only one Regulierorgan a complex structure of the control valve with a variety of components is necessary, which brings difficulties in wear and tightness with it.
  • DE 103 06 094 A1 shows an internal combustion engine cooling system for a vehicle having a coolant pump, an engine circuit for conducting the coolant through the engine, a radiator circuit for conducting the coolant through the radiator, a bypass circuit for returning the coolant to the engine circuit without flowing through the radiator circuit, and a heater circuit for conducting the coolant through the heater core.
  • a rotary valve is described with a valve body having an inlet port and a plurality of outlet ports, wherein the outlet ports a radiator port for conducting the coolant in a radiator circuit, a bypass port for conducting the coolant in a bypass circuit and a heater port to Conducting the coolant in a Schuerniklauf include.
  • the valve body further includes a rotatably mounted Stromverzweiger with a plurality of fluid passages, which depend on a rotational position of Power splitter for preset flow paths between the inlet port and the outlet ports.
  • the preset flow paths thereby comprise a first mode of operation for distributing the coolant to the radiator connection and to the heater connection while blocking the bypass connection, a second mode of distributing the coolant to the bypass connection while simultaneously blocking the coolant from the radiator connection and the heater connection, a third mode of operation Distributing the coolant to the heater port while simultaneously blocking the coolant from the radiator port and the bypass port, and a fourth mode of distributing the coolant to the radiator port and the bypass port while blocking the coolant from the heater port.
  • a disadvantage of such a combustion engine cooling system is due to the structure of the rotary valve limiting the switchable circuits.
  • the inclusion of additional circuits would inevitably lead to a deterioration in the control of the circuits in detail.
  • the coolant temperature can not be adjusted with sufficient accuracy and speed to the desired value, which leads to a poorer achievement of the operating temperature of the internal combustion engine.
  • the object of the present invention is therefore to provide a coolant circuit which, with a simple construction, permits extensive control of a multiplicity of partial circuits of the coolant circuit.
  • a coolant circuit in particular a multi-circuit having coolant circuit of an internal combustion engine with a main cooling circuit and a heating circuit, has a arranged on a turntable coolant pump, wherein the turntable with a rotary valve housing a plurality of flowed through by coolant connections, and a first and at least a second rotatably mounted in the rotary valve housing rotary valve, each having at least one flow path forming rotary valve flow-through, the connections brought by a rotational movement of the respective rotary valve in at least partially overlap with the rotary valve flow openings and wherein a first branch of the main cooling circuit leading from the internal combustion engine to a main radiator port of the first rotary valve is switchable by the first rotary valve, and wherein a second branch of the main cooling circuit leading from an outlet of the coolant supply pump to the internal combustion engine is switchable by the second rotary valve
  • the headers of the individual subcircuits are connected to the first rotary valve, which is fluidically connected to a suction port of the coolant pump.
  • the rotary valve flow-through openings of the first rotary valve can be brought into a continuously variable overlap with the corresponding connections of the rotary valve housing and thus switch different flow paths with varying flow rates.
  • the control of the return flow of the coolant from the coolant supply pump is realized in a second branch of the main cooling circuit by the second rotary valve.
  • the second rotary valve can be very easily formed as a rotary body with a through hole as a rotary valve flow-through, which corresponds to the two opposite ports of the rotary valve housing.
  • the heating circuit branches off upstream of the second rotary valve from the second branch of the main cooling circuit and leads coolant via a heating heat exchanger to the internal combustion engine.
  • the heating circuit branches off in front of the second rotary valve, this is constantly acted upon regardless of the position of the second rotary valve with heated coolant from the coolant pump, which contributes to a rapid heating of the passenger compartment in the motor vehicle through the heater core.
  • a bypass branches off from the first branch of the main cooling circuit downstream of the internal combustion engine to a bypass port of the first rotary valve, wherein the first rotary valve switches the bypass.
  • the bypass heated coolant flows from the internal combustion engine to the bypass port of the first rotary valve, without being cooled by the main radiator.
  • an oil cooler circuit carries coolant from the engine via an oil cooler to an oil cooler port of the first rotary valve, wherein the first rotary valve switches the oil cooler circuit.
  • heated coolant flows from the internal combustion engine into the oil cooler, where a heat exchange with the lubricant of the internal combustion engine takes place.
  • the coolant flows to the oil cooler port of the first rotary valve, where it can be mixed with the coolant flows from the other sub-circuits.
  • the second rotary valve closes the second branch of the main cooling circuit. If the coolant has a relatively low temperature below a first threshold, which is often the case after the start of the engine, the second branch of the main cooling circuit is closed by the second rotary valve, whereby no coolant from the coolant supply pump can flow back into the internal combustion engine. If the heating circuit is also closed, the coolant heats up particularly quickly in the internal combustion engine, since no circulation takes place in the coolant circuit.
  • the first rotary valve closes the oil cooler port and the main radiator port while the bypass port is opened. Thus, all coolers located in the coolant circuit are not flowed through with coolant during this phase.
  • the first rotary valve opens the bypass and the second rotary valve opens and closes the second branch of the main cooling circuit at intervals.
  • the second rotary valve is rotated in such a way that it passes coolant through at intervals. This results in a relatively low coolant flow with a weak circulation of the coolant within the internal combustion engine, which leads to a more homogeneous temperature distribution at the individual components of the internal combustion engine at a further rapid heating rate of the coolant.
  • the first rotary valve closes the oil cooler port and the main radiator port while the bypass port is opened.
  • the first rotary valve opens the bypass and the oil cooler circuit and the second rotary valve opens the second branch of the main cooling circuit.
  • the second rotary valve is permanently opened.
  • the first rotary valve opens the oil cooler connection in addition to the bypass connection, but preferably still keeps the main cooler connection closed.
  • the first rotary valve opens the oil cooler circuit and intermittently opens and closes the first branch of the main cooling circuit and the bypass to achieve a coolant temperature set point and the second rotary valve opens the second branch of the main cooling circuit.
  • the coolant temperature rises above the third threshold value, but is still below a limit value, the coolant has reached approximately its intended setpoint temperature, whereupon the first rotary valve alternately alternately opens and closes the bypass connection and the main radiator connection.
  • the coolant temperature in the first branch of the main cooling circuit is determined downstream of the internal combustion engine.
  • determining the coolant temperature in the first branch of the main cooling circuit at the coolant outlet of the internal combustion engine can be relatively simple be closed on the present in the internal combustion engine coolant temperature.
  • the first rotary valve in a coasting operation after the engine is shut down, opens the first branch of the main cooling circuit and closes the bypass, and the second rotary valve closes the second branch of the main cooling circuit. Since in after-running operation after switching off the internal combustion engine by the lack of wind usually no sufficient heat dissipation takes place on the radiators more, the second rotary valve closes the second branch of the main cooling circuit, while the first rotary valve opens the main radiator connection and the bypass port, and the oil cooler connection closes. As a result, the coolant from the internal combustion engine can flow back into the internal combustion engine via the main radiator, the turntable and the heating heat exchanger. By flowing through both the main radiator and the heating heat exchanger, the cooling surface increases, which contributes to improved heat dissipation.
  • a heating feed pump arranged in the heating circuit circulates the coolant. Since from a belt-driven coolant delivery pump after switching off the engine no more capacity can be retrieved, the circulation takes place during the follow-up operation by an electrically driven heating pump in the heating circuit.
  • a shut-off valve is arranged in the heating circuit, in particular upstream of the heating pump, which is open in the wake mode.
  • the inflow of coolant to the heater core can be interrupted when no heating power for the passenger compartment of the motor vehicle is required.
  • the first rotary valve is arranged coaxially to the suction mouth of the coolant delivery pump and the second rotary valve is arranged axially parallel to the suction mouth of the coolant delivery pump.
  • the first rotary valve is arranged with its axis of rotation coaxial with the axis of rotation of the suction mouth of the coolant delivery pump, the coolant delivery pump can easily suck the coolant from the interior of the first rotary valve.
  • the second rotary valve is arranged with its axis of rotation axially parallel to the axis of rotation of the suction mouth of the coolant pump with a fluidic connection to the outlet of the coolant pump, so that the coolant pump can promote the sucked from the first rotary valve coolant to the second rotary valve.
  • Particularly advantageous is an arrangement of the second rotary valve in a radial peripheral region of the coolant supply pump. Such an arrangement provides advantages in terms of space utilization.
  • the first rotary valve is driven by an actuator and the second rotary valve is operatively connected via at least one angular range with the first rotary valve, wherein the second rotary valve is driven by the first rotary valve.
  • the first rotary valve is provided with an actuator, costs and space can be saved.
  • the drive of the second rotary valve takes place indirectly by a toothing with the first rotary valve, wherein the first and the second rotary valve mesh with each other only in an angular range.
  • the angular range of attacks is limited, where the second rotary valve comes to rest, if it is not operatively connected to the first rotary valve. If there is no more active connection between the first and the second rotary valve, the second rotary valve is located on one of the stops on the outer edge of the angle rich, while the first rotary valve outside the angle range can continue to turn.
  • FIG. 1 shows an overview of a coolant circuit with a device for operating the coolant circuit.
  • Fig. 2 is a sectional view of a turntable
  • Fig. 3 is a sectional view of a turntable
  • Fig. 4 is an illustration of the adjustable by the overlap of the connections with the rotary valve flow openings flow cross sections.
  • the turntable 4 consists of a rotary valve housing with a first and a second rotatably mounted rotary valve 6 and 7, the rotary valve flow-through openings 8, 9 and 10 have.
  • the rotary valve housing has in its wall a plurality of coolant flows through connections, which can be brought by rotation of the rotary valve 6 and / or 7 in at least partially overlapping with the rotary valve flow openings 8, 9 and / or 10 and so different flow paths for the connected subcircuits 1, 2 and 3 form.
  • the internal combustion engine 11 consists essentially of a cylinder block and a cylinder head, which are flowed through by coolant, whereby the amount of heat released during the combustion process in the cylinders of the internal combustion engine 11 is partially transferred to the coolant.
  • a first branch 1a of the main cooling circuit 1 the heated coolant via a main cooler 12, which cools the coolant, to a main radiator port in the rotary valve housing, which is fluidly connectable to the rotary valve flow-through 8 of the first rotary valve 6.
  • a bypass 15 branches off from the first branch 1a of the main cooling circuit 1 to a bypass port of the first rotary valve 6, which is fluidically connectable to the rotary valve throughflow 8 of the first rotary valve 6.
  • the rotary valve through-flow opening 8 can be brought into at least partially overlap with the bypass connection and / or the main radiator connection and thus open or close the two flow paths of the internal combustion engine 11 to the coolant delivery pump 5 continuously variable.
  • a second branch 1 b of the main cooling circuit 1 via the second rotary valve 7 leads to the internal combustion engine 11.
  • the second rotary valve 7 has a rotary valve flow-through 9, with the connections of the second rotary valve 7 in the rotary valve housing by a rotational movement of the second Rotary slide 7 can be brought into at least partially overlap and so a flow path from the coolant supply pump 5 to the engine 11 is infinitely variable opens or closes.
  • the heating circuit 2 branches off from the second branch 1b of the main cooling circuit 1 and leads coolant from the coolant supply pump 5 via a shut-off valve 17, a heating pump 16 and a heat exchanger 13 to the engine 11.
  • the check valve 17 is closed when no heating power is requested and the heating feed pump 16 is preferably electrically driven to circulate the coolant through the refrigerant circuit when the flow rate of the coolant supply pump 5 is too low.
  • an oil cooler circuit 3 conducts coolant via the oil cooler 14 to an oil cooler connection in the rotary valve housing.
  • the first rotary valve 6 has a further rotary valve flow-through opening 9 which can be brought into at least partial overlap with the oil cooler connection and thus opens or closes a flow path from the internal combustion engine 11 to the coolant supply pump 5 in an infinitely variable manner.
  • the oil cooler 14 serves to control the temperature of the lubricant of the internal combustion engine 11.
  • a turntable 4 is arranged on the outer wall of the internal combustion engine 11 and comprises a rotary valve housing 20 with a first and a second rotatably mounted rotary valve 6 and 7, which are preferably designed as a rotary body with an internal volume.
  • the walls of the rotary valve 6 and 7 have rotary valve through-flow openings 8, 9 and 10, through which the rotary valve 6 and 7 can be acted upon with coolant.
  • a preferably belt-driven coolant delivery pump 5 is arranged, which communicates with its suction port 18 fluidly connected to the first rotary valve 6 and communicates with its outlet 21 fluidly with the second rotary valve 7 in connection.
  • the first rotary valve 6 is directly driven by an actuator 19 via a rotation axis, while the second rotary valve 7 is driven by the first rotary valve 6.
  • On the rotary valve housing 20 a plurality of terminals 8a, 8b, 9a, 9b and 10a are mounted, which can be flowed through by coolant.
  • the terminals 8a, 8b, 9a, 9b and / or 10a can be brought into at least partial overlap with the corresponding rotary valve through-flow openings 8, 9 and / or 10 and thus continuously variably open and close different flow paths.
  • the rotary slide through-flow opening 8 of the first rotary valve 6 is a bypass port 8a, which can be acted upon by coolant from a bypass 15, and a main radiator port 8b, which can be acted upon by coolant from a first branch 1a of the main cooling circuit assigned.
  • the further rotary valve flow-through opening 10 of the first rotary valve 6 is associated with an oil cooler connection 10 a, which can be acted upon by coolant from an oil cooler circuit 3.
  • the rotary valve throughflow opening 9 of the second rotary valve 7 is associated with two opposing ports 9a and 9b, which are positioned around the second rotary valve so that there is always a uniform overlap of the two ports 9a and 9b with the rotary valve flow-through 9.
  • the second rotary valve 7 switches the second branch 1b of the main cooling circuit, which leads from the outlet 21 of thehariffeneaupurhpe 5 to the internal combustion engine 11 and branches off from the upstream of the second rotary valve 7 of the heating circuit 2.
  • a turntable 4 has a rotary valve housing 20 in which a first rotary valve 6 and a second rotary valve 7 are rotatably mounted, wherein the first rotary valve 6 is driven directly and the second rotary valve 7 over a defined angular range by a gear 22 with the first rotary valve 6 is operatively connected and is driven by this.
  • the second rotary valve 7 has a rotary valve flow-through opening 9, which can be brought to at least partially overlap with the arranged on both sides of the second rotary valve 7 terminals 9a and 9b and thus a flow path continuously variable opens or closes.
  • coolant flows out of the internal combustion engine via the first branch 1 a of the main cooling circuit through the first rotary valve 6 and is conveyed by a coolant pump in front of the second rotary valve 7.
  • the coolant can pass the second rotary valve 7 and flow back to the internal combustion engine in a second branch 1b of the main cooling circuit.
  • radially distributed rotary vane throughflow openings 8, 9 and 10 are arranged on the first and the second rotary vane.
  • connections 8a, 8b, 9a, 9b and 10a fixedly arranged on a rotary valve housing can be brought into at least partial overlap with the associated rotary valve through-flow openings 8, 9 and / or 10.
  • the terminals 9a and 9b are arranged on the second rotary valve, that a rotation of the same leads to a uniform overlap of the two ports 9a and 9b with the rotary valve flow-through 9.
  • the second rotary valve can be moved together with the first rotary valve over an angular range ⁇ , which is preferably between 90 ° and 160 ° rotation.
  • the first rotary valve can move beyond the angular range ⁇ from an initial position at 0 ° to an end position at approximately 260 °, the second rotary valve abutting a left or right stop at the outer limits of the angular range ⁇ when the first The rotary valve does not cover the angular range ⁇ .
  • the first and the second rotary valve are operatively connected, the first rotary valve passing coolant from the bypass port 8a and the second rotary valve abutting the right stop of the angular range ⁇ , where it does not pass coolant.
  • the second rotary valve moves together with the first rotary valve from the right stop of the angular range ⁇ and intermittently directs coolant from the bypass port 8a via the first rotary valve through the ports 9a and 9b of the second rotary valve.
  • the second rotary valve is brought to rest against the left stop of the angular range ⁇ , whereby the ports 9a and 9b of the second rotary valve is fully opened.
  • Coolant from the oil cooler port 10a and the bypass port 8a flows in the first rotary valve.
  • the first rotary valve moves further in the direction of the initial position, while the second rotary valve continues to abut the left stop of the angular range ⁇ .
  • Coolant from the oil cooler connection 10a constantly flows into the first rotary valve, wherein a defined mixing ratio of coolant from the bypass port 8a and coolant from the main radiator port 8b can be adjusted by a continuous displacement of the first rotary valve until a desired temperature of the coolant is reached .
  • the first rotary valve shifts the second rotary valve to the right stop of the angular range ⁇ , so that no more coolant can flow through the terminals 9a and 9b of the second rotary valve.
  • the first rotary valve rotates further in the direction of the end position, whereby only coolant from the main radiator port 8b is passed through.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Multiple-Way Valves (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne un circuit de liquide de refroidissement, notamment un circuit de liquide de refroidissement d'un moteur à combustion interne (11), présentant plusieurs circuits partiels (1, 2 et 3), en particulier un circuit de refroidissement principal (1) et un circuit de chauffage (2), ainsi qu'une pompe d'alimentation en liquide de refroidissement (5) placée sur un actionneur rotatif (4) qui comprend d'une part un carter (20) destiné à des distributeurs rotatifs, comportant une pluralité de raccords (8a, 8b, 9a, 9b, 10a) pouvant être traversés par le liquide de refroidissement, et d'autre part un premier et un deuxième distributeur rotatif (6 et 7) montés rotatifs dans ledit carter (20) et présentant chacun au moins une ouverture de passage (8, 9, 10) formant un trajet d'écoulement. Une rotation du distributeur rotatif (6 et/ou 7) peut provoquer un chevauchement au moins partiel entre les raccords (8a, 8b, 9a, 9b, 10a) et les ouvertures de passage (8, 9, 10). Une première branche (1a) du circuit de refroidissement principal (1), menant du moteur à combustion interne (11) à un raccord de radiateur principal (8b) du premier distributeur rotatif via un radiateur principal (12), est commandée par le premier distributeur rotatif (6) et une deuxième branche (1b) du circuit de refroidissement principal (1), menant d'une sortie (21) de la pompe d'alimentation en liquide de refroidissement (5) au moteur à combustion interne (11), est commandée par le deuxième distributeur rotatif (7).
EP10719914A 2009-05-06 2010-05-04 Circuit de liquide de refroidissement Withdrawn EP2427638A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009020187A DE102009020187B4 (de) 2009-05-06 2009-05-06 Kühlmittelkreislauf
PCT/EP2010/002716 WO2010127826A1 (fr) 2009-05-06 2010-05-04 Circuit de liquide de refroidissement

Publications (1)

Publication Number Publication Date
EP2427638A1 true EP2427638A1 (fr) 2012-03-14

Family

ID=42332801

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10719914A Withdrawn EP2427638A1 (fr) 2009-05-06 2010-05-04 Circuit de liquide de refroidissement

Country Status (7)

Country Link
US (1) US8757110B2 (fr)
EP (1) EP2427638A1 (fr)
JP (1) JP5323255B2 (fr)
KR (1) KR101419104B1 (fr)
CN (1) CN102414415B (fr)
DE (1) DE102009020187B4 (fr)
WO (1) WO2010127826A1 (fr)

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KR20120024535A (ko) 2012-03-14
DE102009020187A1 (de) 2010-11-11
DE102009020187B4 (de) 2012-11-08
CN102414415B (zh) 2014-05-28
JP5323255B2 (ja) 2013-10-23
WO2010127826A1 (fr) 2010-11-11
KR101419104B1 (ko) 2014-07-11
CN102414415A (zh) 2012-04-11
US8757110B2 (en) 2014-06-24
US20120048217A1 (en) 2012-03-01

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