WO2016099377A1 - Cooling system for cooling combustion engine and a vehicle comprising said system - Google Patents

Cooling system for cooling combustion engine and a vehicle comprising said system Download PDF

Info

Publication number
WO2016099377A1
WO2016099377A1 PCT/SE2015/051281 SE2015051281W WO2016099377A1 WO 2016099377 A1 WO2016099377 A1 WO 2016099377A1 SE 2015051281 W SE2015051281 W SE 2015051281W WO 2016099377 A1 WO2016099377 A1 WO 2016099377A1
Authority
WO
WIPO (PCT)
Prior art keywords
coolant
conduit
cooling
combustion engine
swirl chamber
Prior art date
Application number
PCT/SE2015/051281
Other languages
French (fr)
Inventor
Kim Petersson
Petter Johnson
Original Assignee
Scania Cv Ab
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 Scania Cv Ab filed Critical Scania Cv Ab
Priority to DE112015005236.4T priority Critical patent/DE112015005236B4/en
Priority to BR112017012519A priority patent/BR112017012519A2/en
Publication of WO2016099377A1 publication Critical patent/WO2016099377A1/en

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
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F04D29/4293—Details of fluid inlet or outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F04D29/4273—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps suction eyes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing

Definitions

  • the present invention relates to a cooling system according to the preamble of claim 1 for cooling a combustion engine.
  • the invention also relates to a motor vehicle provided with such a cooling system.
  • a combustion engine of a motor vehicle is cooled by means of coolant which is circulated in a cooling ci rcuit of a cooling system.
  • a centrifugal pump is normally used for circulating the coolant in the cooling circuit.
  • the pressu re in the cooling circuit is at the lowest at the pump i nlet of the centrifugal pump.
  • the low pressure implies a risk of cavitation at the pump i nlet, which may cause damages to the pu mp.
  • a swirling motion of the inlet flow at the pump inlet of a centrifugal pump may for instance be achieved in the manner suggested in US 6 51 7 309 B1 , where two or more injection nozzles are configu red to inject a part of the outlet flow of the pump tangentially into fluid flowing axially towards the pu mp i nlet th rough an inlet conduit.
  • a similar solution is suggested in E P 0 993 547 B1 , where coolant from a bypass conduit of a cooling circuit is made to flow tangentially into coolant flowing axially towards the pump inlet throug h a coolant conduit from a radiator, to thereby achieve a swi rling motion of the coolant flow at the pu mp inlet.
  • the object of the present i nvention is to achieve a new and favourable manner of achieving a swi rling motion of the coolant flow at the i nlet of a centrifugal pump in a cooling system for cooling a combustion engine.
  • the above-mentioned object is achieved by a cooling system having the featu res defined in claim 1 .
  • the cooli ng system of the present i nvention comprises :
  • a radiator provided in the cooling circuit for cooling the coolant
  • a centrifugal pump provided i n the cooling circuit for circulating the coolant in the cooling circuit, the centrifugal pump having a pump inlet;
  • the cooling circuit comprises a first conduit for conveying coolant from a coolant outlet of the radiator towards the pump inlet of the centrifugal pump, and a second conduit, via which coolant circulating in the cooling circuit can bypass the radiator on its way from a coolant outlet of the combustion engine to a coolant inlet of the combustion engine.
  • a downstream end of the first conduit and a downstream end of the second conduit are tangentially con nected to the swirl chamber from different directions, preferably opposite directions, to thereby produce a swirling coolant flow in the swi rl chamber and in the pump inlet.
  • both the coolant flow from the radiator and the coolant flow from the bypass conduit i.e. the above-mentioned second conduit, will contribute to the generation of a swi rling motion of the coolant flow at the inlet of the centrifugal pu mp, and an efficient swirling of the inlet flow at the pu mp inlet may thereby by achieved also in a situation when there is no or only very limited coolant flow in the bypass conduit or i n the conduit from the radiator.
  • said swi rling is achieved without having to draw off any pressurized coolant from the outlet flow of the centrifugal pump.
  • the solution according to the present invention may be implemented in a very space-saving manner, which is of advantage in a motor vehicle where the available space in the engine compartment is often very li mited . Fu rther advantageous features of the cooling system of the present invention will appear from the followi ng description and the dependent clai ms.
  • the i nvention also relates to a motor vehicle having the featu res defined in claim 6.
  • Fig 1 is an outline diagram of a cooling system according to an embodiment of the present invention.
  • Fig 2 is a schematic planar view of a centrifugal pump and an associated swirl chamber included in the cooling system of Fig 1
  • Fig 3 is a cut according to the line III-III in Fig 2.
  • a cooling system 1 according to an embodiment of the present invention is schematically illustrated in Fig 1.
  • This cooling system 1 comprises a cooling circuit 2 for cooling a combustion engine 3 by means of a coolant flowing through the cooling circuit, preferably in the form of water possibly with anti-freezing additives such as for instance glycol.
  • a centrifugal pump 5 is provided in the cooling circuit 2 in order to circulate the coolant in the cooling circuit.
  • a radiator 6, for instance in the form of a conventional coolant radiator, is provided in the cooling circuit 2 in order to cool the coolant.
  • the cooling system 1 is used for cooling the combustion engi ne 3 of a motor vehicle 4.
  • the cooling system of the present invention may also be used for cooling an industrial combustion engine or a marine combustion engine.
  • the cooli ng circuit 2 comprises :
  • Said second conduit 1 0 is configured to allow coolant to be returned from the coolant outlet 1 1 b of the combustion engine 3 to the coolant inlet 1 1 a of the combustion engine without passing th rough the radiator 6.
  • the second conduit 1 0 constitutes a bypass conduit for the coolant.
  • the coolant is circulated through coolant ducts (not shown) i nside the combustion engine while absorbing heat from the combustion engine.
  • a thermostat 1 5 is provided i n the cooli ng circuit 2 at the junction poi nt between the third conduit 1 2 and the second conduit 1 0, wherein an upstream end 1 6 of the second conduit 1 0 is con nected to a coolant outlet 1 7 of the thermostat 1 5.
  • the thermostat 1 5 will either direct the coolant from the combustion engi ne 3 to the radiator 6 for cooling therein before criz ng retu rned to the combustion engine 3, or direct the coolant from the combustion engine 3 directly back to the combustion engine via the second conduit 1 0 without passing th roug h the radiator 6.
  • the coolant flowi ng through the radiator 6 is cooled by means of air which is blown towards the radiator when the motor vehicle 4 is i n motion .
  • the cooling system 1 may also comprise a fan (not shown) for generating an air flow th rough the radiator 6. This fan may be con nected to the combustion engine 3 in order to be driven by the combustion engine.
  • an expansion tank 20 is provided in the cooling circuit 2.
  • An outlet 21 of the expansion tank 20 is connected to the above-mentioned first conduit 7 via a fifth conduit 22 of the cooling circuit 2.
  • This fifth conduit 22 is con nected to the first conduit 7 at a point located between the radiator 6 and the centrifugal pump 5.
  • a first inlet 23a of the expansion tank 20 is con nected to the radiator 6 via a first vent conduit 24 in order to allow coolant and air to flow from the radiator 6 and into the expansion tank 20 via this fi rst vent conduit 24.
  • a second inlet 23b of the expansion tank 20 is con nected to cooling ducts in the combustion engine 3 via a second vent conduit 25 in order to allow coolant and air to flow from the combustion engine 3 and into the expansion tank 20 via this second vent conduit 25. Coolant is conveyed into the expansion tank 20 via the vent conduits 24, 25 and is returned from the expansion tank 20 to the cooling circuit 2 via the above-mentioned fifth conduit 22 after deaeration in the expansion tank.
  • the centrifugal pump 5 comprises a pu mp housing 26 and a pump rotor 27 rotatably mou nted to the pu mp housing , as illustrated in Fig 2.
  • the pump rotor 27 is schematically illustrated by broken lines in Fig 2.
  • the pump inlet 9a is concentric with the pump rotor 27 and preferably has a circular cross-sectional shape.
  • a swi rl chamber 28 is provided in the cooli ng circuit 2 immediately upstream of the pump inlet 9a.
  • a downstream end 29 of the first conduit 7 and a downstream end 30 of the second conduit 1 0 are tangentially con nected to the swirl chamber 28 from different directions to thereby produce a swirling coolant flow, i .e.
  • the coolant is made to rotate in the swirl chamber 28 in a direction corresponding to the rotary direction of the pump rotor 27 or in a direction opposite the rotary direction of the pu mp rotor 27.
  • the coolant entering the swirl chamber 28 from the first conduit 7 is directed agai nst a first curved wall section 31 (see Fig 3) in the swirl chamber 28, whereas the coolant enteri ng the swirl chamber 28 from the second conduit 1 0 is directed against a second cu rved wall section 32 in the swi rl chamber 28.
  • said first and second curved wall sections 31 , 32 are located opposite each other on opposite sides of a centre axis 33 of the swirl chamber 28.
  • the position of the inlet openi ng 34 of the pu mp inlet 9a in relation to the centre axis 33 of the swi rl chamber 28 is illustrated by a broken line in Fig 3.
  • the first conduit 7 has an end section 35 which extends from the swirl chamber 28 in a direction perpendicularly, or at least essentially perpendicularly, to the centre axis 33 of the swirl chamber.
  • the second conduit 1 0 has an end section 36 which extends from the swirl chamber 28 in a direction perpendicularly, or at least essentially perpendicularly, to the centre axis 33 of the swirl chamber.
  • the end sections 35, 36 of the first and second conduits 7, 1 0 are offset from each other by an angle of 1 80 ° about the centre axis 33 of the swi rl chamber 28.
  • This offset angle may however have any desired value in an interval from 90 ° to 270 °.
  • the swirl chamber 28 has a circular cross-sectional shape.
  • the swirl chamber 28 may as an alternative have an oval cross-sectional shape.
  • the cooling system according to the invention is particularly intended for use in a heavy motor vehicle, such as for i nstance a bus, a tractor truck or a lorry.
  • the invention is of cou rse not in any way restricted to the embodiments described above. On the contrary, many possibilities to modifications thereof will be apparent to a person with ordinary skill i n the art without departing from the basic idea of the invention such as defined in the appended claims.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

A cooling system (1) comprising: - a cooling circuit (2) for cooling a combustion engine (3) by means of coolant circulating in the cooling circuit; - a radiator (6) for cooling the coolant; - a centrifugal pump (5) for circulating the coolant in the cooling circuit; and - a swirl chamber (28) provided in the cooling circuit immediately upstream of a pump inlet (9a) of the pump. The cooling circuit comprises a first conduit (7) for conveying coolant from the radiator towards the pump inlet (9a), and a second conduit (10), via which coolant can bypass the radiator. A downstream end (29) of the first conduit and a downstream end (30) of the second conduit are tangentially connected to the swirl chamber (28) from different directions to thereby produce a swirling coolant flow in the swirl chamber and in the pump inlet (9a).

Description

COOLING SYSTEM FOR COOLING COMBUSTION ENGINE AND A VEHICLE
COMPRISING SAID SYSTEM
FI ELD OF TH E I NVENTION AN D P RIOR ART
The present invention relates to a cooling system according to the preamble of claim 1 for cooling a combustion engine. The invention also relates to a motor vehicle provided with such a cooling system.
A combustion engine of a motor vehicle is cooled by means of coolant which is circulated in a cooling ci rcuit of a cooling system. A centrifugal pump is normally used for circulating the coolant in the cooling circuit. The pressu re in the cooling circuit is at the lowest at the pump i nlet of the centrifugal pump. The low pressure implies a risk of cavitation at the pump i nlet, which may cause damages to the pu mp.
It is previously known that a swirling motion of the fluid at the pump inlet of a centrifugal pu mp will give i mproved flow conditions for the fluid entering the pu mp rotor, which i n its turn will result in improved pu mp efficiency and a reduced pressure drop at the pump inlet. The reduced pressu re drop will in its turn result in a reduction of the risk of cavitation at the pump inlet. A swirling motion of the inlet flow at the pump inlet of a centrifugal pump may for instance be achieved in the manner suggested in US 6 51 7 309 B1 , where two or more injection nozzles are configu red to inject a part of the outlet flow of the pump tangentially into fluid flowing axially towards the pu mp i nlet th rough an inlet conduit. A similar solution is suggested in E P 0 993 547 B1 , where coolant from a bypass conduit of a cooling circuit is made to flow tangentially into coolant flowing axially towards the pump inlet throug h a coolant conduit from a radiator, to thereby achieve a swi rling motion of the coolant flow at the pu mp inlet.
OBJ ECT OF TH E I NVENTION The object of the present i nvention is to achieve a new and favourable manner of achieving a swi rling motion of the coolant flow at the i nlet of a centrifugal pump in a cooling system for cooling a combustion engine. SUMMARY OF TH E I NVENTION
According to the present invention, the above-mentioned object is achieved by a cooling system having the featu res defined in claim 1 .
The cooli ng system of the present i nvention comprises :
- a cooli ng circuit for cooling a combustion engine by means of coolant circulating in the cooli ng circuit;
- a radiator provided in the cooling circuit for cooling the coolant; - a centrifugal pump provided i n the cooling circuit for circulating the coolant in the cooling circuit, the centrifugal pump having a pump inlet; and
- a swirl chamber provided in the cooling circuit i mmediately upstream of the pump inlet. The cooling circuit comprises a first conduit for conveying coolant from a coolant outlet of the radiator towards the pump inlet of the centrifugal pump, and a second conduit, via which coolant circulating in the cooling circuit can bypass the radiator on its way from a coolant outlet of the combustion engine to a coolant inlet of the combustion engine. A downstream end of the first conduit and a downstream end of the second conduit are tangentially con nected to the swirl chamber from different directions, preferably opposite directions, to thereby produce a swirling coolant flow in the swi rl chamber and in the pump inlet. Thus, both the coolant flow from the radiator and the coolant flow from the bypass conduit, i.e. the above-mentioned second conduit, will contribute to the generation of a swi rling motion of the coolant flow at the inlet of the centrifugal pu mp, and an efficient swirling of the inlet flow at the pu mp inlet may thereby by achieved also in a situation when there is no or only very limited coolant flow in the bypass conduit or i n the conduit from the radiator. Furthermore, said swi rling is achieved without having to draw off any pressurized coolant from the outlet flow of the centrifugal pump. The solution according to the present invention may be implemented in a very space-saving manner, which is of advantage in a motor vehicle where the available space in the engine compartment is often very li mited . Fu rther advantageous features of the cooling system of the present invention will appear from the followi ng description and the dependent clai ms.
The i nvention also relates to a motor vehicle having the featu res defined in claim 6. BRIEF DESCRIPTION OF THE DRAWINGS
With reference to the appended drawings, a specific description of preferred embodiments of the invention cited as examples follows below. In the drawings:
Fig 1 is an outline diagram of a cooling system according to an embodiment of the present invention,
Fig 2 is a schematic planar view of a centrifugal pump and an associated swirl chamber included in the cooling system of Fig 1 , and Fig 3 is a cut according to the line III-III in Fig 2.
DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION A cooling system 1 according to an embodiment of the present invention is schematically illustrated in Fig 1. This cooling system 1 comprises a cooling circuit 2 for cooling a combustion engine 3 by means of a coolant flowing through the cooling circuit, preferably in the form of water possibly with anti-freezing additives such as for instance glycol. A centrifugal pump 5 is provided in the cooling circuit 2 in order to circulate the coolant in the cooling circuit. Furthermore, a radiator 6, for instance in the form of a conventional coolant radiator, is provided in the cooling circuit 2 in order to cool the coolant. In the illustrated example, the cooling system 1 is used for cooling the combustion engi ne 3 of a motor vehicle 4. However, the cooling system of the present invention may also be used for cooling an industrial combustion engine or a marine combustion engine.
The cooli ng circuit 2 comprises :
- a first conduit 7 for conveying coolant from a coolant outlet 8b of the radiator 6 towards a pump inlet 9a of the centrifugal pump
5 ;
- a second conduit 1 0, via which coolant circulating i n the cooling circuit 2 can bypass the radiator 6 on its way f rom a coolant outlet 1 1 b of the combustion engine 3 to a coolant inlet 1 1 a of the combustion engine 3 ;
- a third conduit 1 2 for conveying coolant from the coolant outlet 1 1 b of the combustion engine 3 to a coolant inlet 8a of the radiator 6 ; and
- a fourth conduit 1 3 for conveying coolant from a pu mp outlet 9b of the centrifugal pump 5 to the coolant inlet 1 1 a of the combustion engine 3.
Said second conduit 1 0 is configured to allow coolant to be returned from the coolant outlet 1 1 b of the combustion engine 3 to the coolant inlet 1 1 a of the combustion engine without passing th rough the radiator 6. Thus, the second conduit 1 0 constitutes a bypass conduit for the coolant. Between the coolant inlet 1 1 a and the coolant outlet 1 1 b of the combustion engine 3, the coolant is circulated through coolant ducts (not shown) i nside the combustion engine while absorbing heat from the combustion engine. A thermostat 1 5 is provided i n the cooli ng circuit 2 at the junction poi nt between the third conduit 1 2 and the second conduit 1 0, wherein an upstream end 1 6 of the second conduit 1 0 is con nected to a coolant outlet 1 7 of the thermostat 1 5. Depending on the temperatu re of the coolant leaving the combustion engine 3, the thermostat 1 5 will either direct the coolant from the combustion engi ne 3 to the radiator 6 for cooling therein before bei ng retu rned to the combustion engine 3, or direct the coolant from the combustion engine 3 directly back to the combustion engine via the second conduit 1 0 without passing th roug h the radiator 6.
The coolant flowi ng through the radiator 6 is cooled by means of air which is blown towards the radiator when the motor vehicle 4 is i n motion . The cooling system 1 may also comprise a fan (not shown) for generating an air flow th rough the radiator 6. This fan may be con nected to the combustion engine 3 in order to be driven by the combustion engine.
Fu rthermore, an expansion tank 20 is provided in the cooling circuit 2. An outlet 21 of the expansion tank 20 is connected to the above-mentioned first conduit 7 via a fifth conduit 22 of the cooling circuit 2. This fifth conduit 22 is con nected to the first conduit 7 at a point located between the radiator 6 and the centrifugal pump 5. A first inlet 23a of the expansion tank 20 is con nected to the radiator 6 via a first vent conduit 24 in order to allow coolant and air to flow from the radiator 6 and into the expansion tank 20 via this fi rst vent conduit 24. A second inlet 23b of the expansion tank 20 is con nected to cooling ducts in the combustion engine 3 via a second vent conduit 25 in order to allow coolant and air to flow from the combustion engine 3 and into the expansion tank 20 via this second vent conduit 25. Coolant is conveyed into the expansion tank 20 via the vent conduits 24, 25 and is returned from the expansion tank 20 to the cooling circuit 2 via the above-mentioned fifth conduit 22 after deaeration in the expansion tank.
The centrifugal pump 5 comprises a pu mp housing 26 and a pump rotor 27 rotatably mou nted to the pu mp housing , as illustrated in Fig 2. The pump rotor 27 is schematically illustrated by broken lines in Fig 2. The pump inlet 9a is concentric with the pump rotor 27 and preferably has a circular cross-sectional shape. A swi rl chamber 28 is provided in the cooli ng circuit 2 immediately upstream of the pump inlet 9a. A downstream end 29 of the first conduit 7 and a downstream end 30 of the second conduit 1 0 are tangentially con nected to the swirl chamber 28 from different directions to thereby produce a swirling coolant flow, i .e. a rotary motion of the coolant, in the swirl chamber 28 and in the pu mp inlet 9a, as illustrated by the arrows i n Fig 3. The coolant is made to rotate in the swirl chamber 28 in a direction corresponding to the rotary direction of the pump rotor 27 or in a direction opposite the rotary direction of the pu mp rotor 27.
The coolant entering the swirl chamber 28 from the first conduit 7 is directed agai nst a first curved wall section 31 (see Fig 3) in the swirl chamber 28, whereas the coolant enteri ng the swirl chamber 28 from the second conduit 1 0 is directed against a second cu rved wall section 32 in the swi rl chamber 28. In the illustrated embodiment, said first and second curved wall sections 31 , 32 are located opposite each other on opposite sides of a centre axis 33 of the swirl chamber 28. The position of the inlet openi ng 34 of the pu mp inlet 9a in relation to the centre axis 33 of the swi rl chamber 28 is illustrated by a broken line in Fig 3.
In the illustrated embodiment, the first conduit 7 has an end section 35 which extends from the swirl chamber 28 in a direction perpendicularly, or at least essentially perpendicularly, to the centre axis 33 of the swirl chamber. I n the illustrated embodiment, also the second conduit 1 0 has an end section 36 which extends from the swirl chamber 28 in a direction perpendicularly, or at least essentially perpendicularly, to the centre axis 33 of the swirl chamber.
In the illustrated embodiment, the end sections 35, 36 of the first and second conduits 7, 1 0 are offset from each other by an angle of 1 80 ° about the centre axis 33 of the swi rl chamber 28. This offset angle may however have any desired value in an interval from 90 ° to 270 °.
In the illustrated embodiment, the swirl chamber 28 has a circular cross-sectional shape. However, the swirl chamber 28 may as an alternative have an oval cross-sectional shape.
The cooling system according to the invention is particularly intended for use in a heavy motor vehicle, such as for i nstance a bus, a tractor truck or a lorry. The invention is of cou rse not in any way restricted to the embodiments described above. On the contrary, many possibilities to modifications thereof will be apparent to a person with ordinary skill i n the art without departing from the basic idea of the invention such as defined in the appended claims.

Claims

A cooling system comprising :
- a cooling circuit (2) for cooling a combustion engine (3) by means of coolant circulating in the cooling circuit (2) ;
- a radiator (6) provided in the cooli ng circuit (2) for cooling the coolant; and
- a centrifugal pump (5) provided in the cooling circuit (2) for circulating the coolant in the cooling circuit, the centrifugal pu mp (5) having a pump inlet (9a) ;
wherein the cooling circuit (2) comprises a first conduit (7) for conveying coolant from a coolant outlet (8b) of the radiator (6) towards the pump inlet (9a) of the centrifugal pump (5) , and a second conduit (1 0) , via which coolant circulati ng in the cooling ci rcuit (2) can bypass the radiator (6) on its way from a coolant outlet (1 1 b) of the combustion engine (3) to a coolant inlet (1 1 a) of the combustion engine (3),
characterized in that a swirl chamber (28) is provided in the cooling circuit (2) i mmediately upstream of the pump inlet (9a) , wherein a downstream end (29) of the first conduit (7) and a downstream end (30) of the second conduit (1 0) are tangentially connected to the swirl chamber (28) from different directions to thereby produce a swirling coolant flow i n the swirl chamber (28) and in the pu mp inlet (9a) .
A cooling system according to claim 1 , characterized in that the downstream end (29) of the fi rst conduit (7) and the downstream end (30) of the second conduit (1 0) are tangentially con nected to the swi rl chamber (28) from opposite directions. A cooling system according to claim 1 or 2, characterized in that the first conduit (7) has an end section (35) which extends from the swirl chamber (28) in a direction perpendicularly, or at least essentially perpendicularly, to the centre axis (33) of the swirl chamber (28).
A cooling system according to any of claims 1-3, characterized in that the second conduit (10) has an end section (36) which extends from the swirl chamber (28) in a direction perpendicularly, or at least essentially perpendicularly, to the centre axis (33) of the swirl chamber (28).
A cooling system according to any of claims 1-4, characterized in:
- that the radiator (6) has a coolant inlet (8a) which is connected to a coolant outlet (11b) of the combustion engine (3) via a third conduit (12) of the cooling circuit (2);
- that the cooling system (1) comprises a thermostat (15) provided in the third conduit (12); and
- that an upstream end (16) of the second conduit (10) is connected to a coolant outlet (17) of the thermostat (15).
A motor vehicle comprising a combustion engine (3), characterized in that the motor vehicle (4) comprises a cooling system (1) according to any of claims 1-5 for cooling the combustion engine (3).
PCT/SE2015/051281 2014-12-19 2015-11-30 Cooling system for cooling combustion engine and a vehicle comprising said system WO2016099377A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112015005236.4T DE112015005236B4 (en) 2014-12-19 2015-11-30 COOLING SYSTEM SET UP TO COOL AN COMBUSTION ENGINE; AND A VEHICLE THAT INCLUDES THE COOLING SYSTEM
BR112017012519A BR112017012519A2 (en) 2014-12-19 2015-11-30 cooling system for cooling a combustion engine and a vehicle comprising said system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1451593-6 2014-12-19
SE1451593A SE540255C2 (en) 2014-12-19 2014-12-19 Cooling system for cooling a combustion engine and a motor vehicle comprising such a cooling system

Publications (1)

Publication Number Publication Date
WO2016099377A1 true WO2016099377A1 (en) 2016-06-23

Family

ID=56127072

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2015/051281 WO2016099377A1 (en) 2014-12-19 2015-11-30 Cooling system for cooling combustion engine and a vehicle comprising said system

Country Status (4)

Country Link
BR (1) BR112017012519A2 (en)
DE (1) DE112015005236B4 (en)
SE (1) SE540255C2 (en)
WO (1) WO2016099377A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2845051A (en) * 1954-06-30 1958-07-29 Gen Motors Corp Cooling system for engines
US4155333A (en) * 1977-04-07 1979-05-22 Brunswick Corporation Centrifugal water pump for internal combustion engines
US4976462A (en) * 1986-03-20 1990-12-11 Yamaha Hatsudoki Kabushiki Kaisha Water cooling means for engine
US6517309B1 (en) * 1998-03-13 2003-02-11 Unitec Institute Of Technology Pumping apparatus and methods
GB2387647A (en) * 2002-03-07 2003-10-22 Ford Global Tech Inc Engine cooling system with tangentially ported thermostsatic valve assembly
EP0993547B1 (en) * 1997-05-29 2005-03-16 Volvo Lastvagnar Ab Method and arrangement relating to circulation pumps

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3162136A (en) 1959-11-17 1964-12-22 Thompson Ramo Wooldridge Inc Centrifugal type pumps

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2845051A (en) * 1954-06-30 1958-07-29 Gen Motors Corp Cooling system for engines
US4155333A (en) * 1977-04-07 1979-05-22 Brunswick Corporation Centrifugal water pump for internal combustion engines
US4976462A (en) * 1986-03-20 1990-12-11 Yamaha Hatsudoki Kabushiki Kaisha Water cooling means for engine
EP0993547B1 (en) * 1997-05-29 2005-03-16 Volvo Lastvagnar Ab Method and arrangement relating to circulation pumps
US6517309B1 (en) * 1998-03-13 2003-02-11 Unitec Institute Of Technology Pumping apparatus and methods
GB2387647A (en) * 2002-03-07 2003-10-22 Ford Global Tech Inc Engine cooling system with tangentially ported thermostsatic valve assembly

Also Published As

Publication number Publication date
DE112015005236B4 (en) 2021-10-21
BR112017012519A2 (en) 2018-02-27
DE112015005236T5 (en) 2017-10-12
SE540255C2 (en) 2018-05-15
SE1451593A1 (en) 2016-06-20

Similar Documents

Publication Publication Date Title
KR101601409B1 (en) Fluid management system for a heat exchanger of a vehicle air conditioning system
US9731591B2 (en) Heat transfer airflow through engine compartment
US9784277B2 (en) Motor vehicle fan of reduced axial size
WO2016099377A1 (en) Cooling system for cooling combustion engine and a vehicle comprising said system
KR101833277B1 (en) Blower
US9777681B2 (en) Cold air intake circulating air jacket
EP3173336B1 (en) Supply tube for sensor
US9708944B2 (en) Apparatus for supplying a coolant to a heat exchanger, preferably for an exhaust gas cooler of an internal combustion engine of a motor vehicle
CN106481431B (en) Cooling device and motor vehicle
JP6369120B2 (en) Hybrid vehicle cooling system
KR20170007452A (en) Cooling arrangement and a motor vehicle equipped with such a cooling system
US20070114300A1 (en) Automotive electric fan system with a liquid misting unit
US10352229B2 (en) Cooling system for a work vehicle
US7073576B2 (en) System for the circulation of the coolant of the oil cooler for the automatic transmission of a motor vehicle
KR102664118B1 (en) Reservoir tank with integrated ejector
KR102181068B1 (en) Exhaust gas output device for ships
US20190184786A1 (en) Labyrinth seal for fan assembly
JP6582848B2 (en) Engine cooling system
RU2671427C1 (en) Vehicle
SE541944C2 (en) An expansion tank for the cooling system of a liquid-cooled internal combustion engine
US10550758B2 (en) Cooling system for a work vehicle
US9103351B2 (en) Cooling pump for a cooling system
CN112005050B (en) Dual port fluid dynamic heater
US11098725B2 (en) Hydrodynamic heater pump
JP2019138197A (en) Radiator and engine cooling system

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15870453

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
WWE Wipo information: entry into national phase

Ref document number: 112015005236

Country of ref document: DE

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112017012519

Country of ref document: BR

122 Ep: pct application non-entry in european phase

Ref document number: 15870453

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 112017012519

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20170612