SE538033C2 - Arrangement for heating a space in a vehicle - Google Patents

Arrangement for heating a space in a vehicle Download PDF

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Publication number
SE538033C2
SE538033C2 SE1450726A SE1450726A SE538033C2 SE 538033 C2 SE538033 C2 SE 538033C2 SE 1450726 A SE1450726 A SE 1450726A SE 1450726 A SE1450726 A SE 1450726A SE 538033 C2 SE538033 C2 SE 538033C2
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Sweden
Prior art keywords
cooling system
cooling
line
heat exchanger
air
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SE1450726A
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Swedish (sv)
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SE1450726A1 (en
Inventor
Zoltan Kardos
Thomas Hällqvist
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Scania Cv Ab
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Application filed by Scania Cv Ab filed Critical Scania Cv Ab
Priority to SE1450726A priority Critical patent/SE538033C2/en
Priority to DE102015007533.0A priority patent/DE102015007533A1/en
Publication of SE1450726A1 publication Critical patent/SE1450726A1/en
Publication of SE538033C2 publication Critical patent/SE538033C2/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00314—Arrangements permitting a rapid heating of the heating liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00321—Heat exchangers for air-conditioning devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • B60H1/14—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant otherwise than from cooling liquid of the plant, e.g. heat from the grease oil, the brakes, the transmission unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/0406—Layout of the intake air cooling or coolant circuit
    • F02B29/0437—Liquid cooled heat exchangers
    • F02B29/0443—Layout of the coolant or refrigerant circuit
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

Sammandrag Foreliggande uppfirming avser ett arrangemang fOr att varma upp ett utrymme (22) i ett fordon (1). Fordonet innefattar en laddluftkylare (7) dar kylvatskan i ett forsta kylsystem (25) är anpassad att kyla komprimerade luften som leds till f6rbranningsmotom (2) via en inloppsledning (6). Anangemanget innefattar en varmevaxlare (21) som är anordnad i ett utrymme (22) som är anpassat att varmas upp i fordonet (1), en forsta ledningskrets (32) som är anpassad att leda kylvatska frail det forsta kylsystemet (25) till varmevaxlaren (21) i namnda utrymme (22) och en ventilanordning (33, 34) som är anpassad att reglera kylvatskeflodet till varmevaxlaren (22) via den forsta ledningskretsen (25). Ventilanordningen (33, 34) är anpassad att stallas i ett oppet lage d luften i inloppsledningen (6) har ett hogre tryck an ett forbestamt tryckvarde (p) och i ett stangt lage dâ luften i inloppsledningen (6) har ett lagre tryck an namnda forbestarrida tryckvarde (p). Summary The present invention relates to an arrangement for heating a space (22) in a vehicle (1). The vehicle comprises a charge air cooler (7) where the cooling liquid in a first cooling system (25) is adapted to cool the compressed air which is led to the combustion engine (2) via an inlet line (6). The arrangement comprises a heat exchanger (21) arranged in a space (22) which is adapted to be heated in the vehicle (1), a first line circuit (32) which is adapted to conduct cooling water from the first cooling system (25) to the heat exchanger ( 21) in said space (22) and a valve device (33, 34) which is adapted to regulate the cooling water flow to the heat exchanger (22) via the first line circuit (25). The valve device (33, 34) is adapted to be stored in an open layer where the air in the inlet line (6) has a higher pressure than a predetermined pressure value (p) and in a closed position when the air in the inlet line (6) has a lower pressure than said forbestarrida pressure value (p).

Description

Arrangemang for uppvarmning av ett utrymme i ett fordon UPPFINNINGENS BAKGRUND OCH KAND TEKNIK FOreliggande uppfinning avser ett arrangemang fOr uppvarmning av ett utrymme i ett fordon enligt patentkravets 1 ingress. BACKGROUND OF THE INVENTION AND PRIOR ART The present invention relates to an arrangement for heating a space in a vehicle according to the preamble of claim 1.

Hyttutrymmen i fordon som drivs av en fOrbranningsmotor varms i regel upp av kylvdtska som cirkulerar i ett kylsystem som kyler forbranningsmotorn. Forbranningsmotorn som vanligtvis är en dieselmotor har en relativt hog verkningsgrad och da den är mattligt belastad tar det en relativt lang tid innan kylvdtskan erhaller en sa pass hog temperatur att den kan utnyttjas for att varma upp luften i hyttutrymmet pd ett effektivt att. Av den anledningen satter forare vanligtvis pa sig ytterkldder i hyttutrymmet i anslutning till start av fordonet da det radet en kall omgivande temperatur. Cabin spaces in vehicles powered by an internal combustion engine are usually heated by coolant circulating in a cooling system that cools the internal combustion engine. The internal combustion engine, which is usually a diesel engine, has a relatively high efficiency and since it is moderately loaded, it takes a relatively long time before the coolant reaches such a high temperature that it can be used to heat the air in the cabin space in an efficient manner. For this reason, drivers usually put on outer clothing in the cab compartment adjacent to the start of the vehicle as it radiates a cold ambient temperature.

Den mangd luft som kan tillfOras till en overladdad fOrbranningsmotor i ett fordon beror pd luftens tryck men aven pd luftens temperatur. For att tillfora en sa stor mangd luft som mojligt till en overladdad forbranningsmotor kyls den komprimerade luften i atminstone en laddluftkylare innan den leds till forbranningsmotom. Den komprimerade luften kan kylas av kylvdtska i ett lagtemperaturkylsystem ddr kylvdtskan under de fiesta drifttillstand har en lagre temperatur an kylvdtskan i kylsystemet som kyler forbranningsmotorn. Luften kan i detta fall kylas till en temperatur i narheten av omgivningens temperatur. The amount of air that can be supplied to an overcharged internal combustion engine in a vehicle depends on the pressure of the air but also on the temperature of the air. In order to supply as large an air as possible to an overcharged internal combustion engine, the compressed air is cooled in at least one charge air cooler before it is led to the internal combustion engine. The compressed air can be cooled by coolant in a low temperature cooling system where the coolant under the most operating conditions has a lower temperature than the coolant in the cooling system which cools the internal combustion engine. In this case, the air can be cooled to a temperature close to the ambient temperature.

De 20 2013 102 685 Ul visar ett system for uppviirmning av ett invandigt utrymme i ett fordon. Uppvdrmningssystemet innefattar ett hogtemperaturkylkrets med en cirkulerande kylvdtska som kyler en fOrbranningsmotor. Hogtemperaturkylkretsen innefattar en varmevaxlare for uppvarmning av ett hyttutrymme i fordonet. Uppvarmningssystemet innefattar aven ett lagtemperaturkylkrets med en cirkulerande kylvdtska som kyler komprimerad luft i en laddluftkylare. Ldgtemperaturkylkretsen 1 innefattar en tillsatsvarmevaxlare i det invandiga utrymmet Darmed kan kylvatskan i lagtemperaturkylsystemet aven anvandas for uppvarmning av hyttutrymmet. De 20 2013 102 685 Ul shows a system for heating an interior space in a vehicle. The heating system comprises a high temperature cooling circuit with a circulating cooling liquid which cools an internal combustion engine. The high temperature cooling circuit comprises a heat exchanger for heating a cab space in the vehicle. The heating system also includes a low temperature cooling circuit with a circulating cooling fluid that cools compressed air in a charge air cooler. The low-temperature cooling circuit 1 comprises an auxiliary heat exchanger in the interior space. Thus, the cooling liquid in the low-temperature cooling system can also be used for heating the cabin space.

SAMMANFATTNING AV UPPFINNINGEN Syftet med foreliggande uppfinning är att tillhandahalla ett arrangemang som pa ett enkelt och tillforlitligt sat tillhandahaller en snabb uppvarmning av ett utrymme i ett fordon efter en kallstart. SUMMARY OF THE INVENTION The object of the present invention is to provide an arrangement which in a simple and reliable manner provides a rapid heating of a space in a vehicle after a cold start.

Ovan namnda syfte uppnas med arrangemanget som definieras i patentkravets 1 kannetecknande del. Da en overladdad forbranningsmotor startar paborjar en kompressor vasentligen samtidigt komprimeringen av tuft som leds till forbranningsmotorn och en kylvatskepump cirkulationen av kylvdtska i ett forsta kylsystem som innefattar en laddluftkylare. I samband med att luften komprimeras erhaller den en uppvarmning. Den cirkulerande kylvatskan i det fOrsta kylsystemet som kommer i kontakt med den varma komprimerade luften i laddluftkylaren erhaller damned en motsvarande uppvarmning Det är saledes mycket lampligt att anvanda kylvatska i ett kylsystem som kyler laddluft for att tillhandahalla en snabb uppvarmning av ett utrymme i ett fordon efter en kallstart. Arrangemanget innefattar en ventilanordning som styrs av den komprimerade luftens tryck i inloppsledningen. The above-mentioned object is achieved with the arrangement defined in the cantilevered part of claim 1. When an overcharged internal combustion engine starts, a compressor substantially simultaneously starts the compression of tuft led to the internal combustion engine and a coolant pump circulates the coolant in a first cooling system which includes a charge air cooler. In connection with the air being compressed, it receives a heating. The circulating coolant in the first cooling system that comes into contact with the hot compressed air in the charge air cooler receives a corresponding heating. It is thus very convenient to use coolant in a cooling system that cools charge air to provide a rapid heating of a space in a vehicle after a cold start. The arrangement comprises a valve device which is controlled by the pressure of the compressed air in the inlet line.

Luftens tryck är relaterat luftens temperatur. Luftens tryck är damned aven relaterat till den temperatur som kylvdtskan erhaller da den varms upp av den komprimerade luften i laddluftkylaren. Da lufttrycket i inloppsledningen stiger over ett forbestamt varde av lamplig storlek erhalls pa ett enkelt satt en saker indikation pa att varm komprimerad luft leds till laddluftkylaren och att kylvatskan som lamnar laddluftkylaren har erhallit en forhojd temperatur. Uppvarmningen av namnda utrymme startar sa snart som ventilanordningen stalls i ett Oppet lage av trycket i inloppsledningen. Det sker relativt snart efter att forbranningsmotorn startats. Da det sker leds varm kylvatska genom den forsta ledningskretsen till varmevaxlaren i utrymmet. En sadan ventilanordning som styr kylvdtskeflOdet till varmevaxlaren med hjalp av den komprimerade luftens tryck har en enkel och tillforlitlig funktion. The air pressure is related to the air temperature. The air pressure is also related to the temperature that the coolant receives when it is heated by the compressed air in the charge air cooler. As the air pressure in the inlet line rises above a predetermined value of suitable size, a simple indication is obtained that hot compressed air is led to the charge air cooler and that the cooling liquid which leaves the charge air cooler has reached an elevated temperature. The heating of said space starts as soon as the valve device is installed in an open layer of the pressure in the inlet line. This happens relatively soon after the internal combustion engine is started. When this happens, hot cooling water is led through the first line circuit to the heat exchanger in the room. Such a valve device which controls the cooling fluid flow to the heat exchanger by means of the pressure of the compressed air has a simple and reliable function.

Enligt en utforingsform av foreliggande uppfinning innefattar ventilanordningen ett ventilorgan och en pneumatisk aktuator som är anpassad att avkanna trycket i inloppsledningen och att stalla ventilen i det oppna lage sa snart som trycket i inloppsledningen overstiger det forbestamda tryckvardet. En sadan pneumatisk 2 aktuator kan ha en relativt enkel konstruktion. Den kan, exempelvis, innefatta ett flexibelt membran som pa en sida som ar i kontakt med den komprimerade luften i inloppsledningen. I beroende av trycket i inloppsledningen kan membranet tillhandahalla en forskjutningsrorelse som overfors till ventilorganet via en komponent som kan vara ett langstrackt stelt element som är anordnad pa en motsatt sida av membranet. According to an embodiment of the present invention, the valve device comprises a valve means and a pneumatic actuator which is adapted to sense the pressure in the inlet line and to place the valve in the open position as soon as the pressure in the inlet line exceeds the predetermined pressure value. Such a pneumatic 2 actuator can have a relatively simple construction. It may, for example, comprise a flexible membrane on one side which is in contact with the compressed air in the inlet duct. Depending on the pressure in the inlet line, the diaphragm may provide a displacement movement which is transmitted to the valve means via a component which may be an elongate rigid element which is arranged on an opposite side of the diaphragm.

Enligt en utforingsform av foreliggande uppfinning innefattar namnda forsta ledningskrets ett inlopp som är forbundet med en ledning som mottar kylvatska fran laddluftkylaren i det forsta kylsystemet. Darmed kan den varma kylvatskan som lamnar laddluftkylaren vasentligen direkt ledas in i den forsta ledningskretsen och ledas till varmevaxlaren. Den fOrsta ledningskretsen kan innefatta ett utlopp som är forbundet med en ledning som mottar kylvatska fran kylaren i det forsta kylsystemet. Kylvatskan som anvands i varmevaxlaren leds clamed inte genom kylaren hos det forsta kylsystemet. Kylvatskan kan i och med det ha en hOgre temperatur da den Ater leds till varmevaxlaren vilket gynnar den fortsatta uppvarmningen av utrymmet. Namnda forsta ledningskrets kan innefatta ett inlopp som är forbundet med en del av det forsta kylsystemet som är belaget pa en trycksida hos kylvatskepumpen och ett utlopp som är forbundet med en del av det forsta kylsystemet som är belaget pa en sugsida hos kylvatskepumpen. Darmed kan kylvatskan cirkuleras genom den forsta ledningskretsen med hjalp av den ordinarie kylvatskepumpen i det forsta kylsystemet. According to an embodiment of the present invention, said first line circuit comprises an inlet which is connected to a line which receives cooling water from the charge air cooler in the first cooling system. Thus, the hot coolant that leaves the charge air cooler can be substantially directly led into the first line circuit and led to the heat exchanger. The first line circuit may comprise an outlet connected to a line which receives coolant from the cooler in the first cooling system. The coolant used in the heat exchanger is not clamed through the radiator of the first cooling system. The cooling liquid can thus have a higher temperature as it is again led to the heat exchanger, which favors the continued heating of the space. Said first conduit circuit may comprise an inlet connected to a part of the first cooling system which is coated on a pressure side of the coolant pump and an outlet which is connected to a part of the first cooling system which is coated on a suction side of the coolant pump. This allows the coolant to be circulated through the first line circuit with the help of the ordinary coolant pump in the first cooling system.

Enligt en utforingsform av foreliggande uppfinning är namnda kylsystem ett lagtemperaturkylsystem. Med ett lagtemperaturkylsystem avses att kylvatskan under de fiesta drifttillstand har en lagre temperatur an kylvatskan i ett hogtemperaturkylsystem som normalt utnyttjas for att kyla en forbranningsmotor i ett fordon. Eftersom det i regel är fordelaktigt att kyla laddluften till en sa lag temperatur som mojligt är det lampligt att kyla den komprimerade luften med kylvatska hos ett lagtemperaturkylsystem. According to an embodiment of the present invention, said cooling system is a low temperature cooling system. By a low temperature cooling system is meant that the coolant under the most operating conditions has a lower temperature than the coolant in a high temperature cooling system which is normally used to cool an internal combustion engine in a vehicle. Since it is generally advantageous to cool the charge air to as low a temperature as possible, it is appropriate to cool the compressed air with cooling water in a low temperature cooling system.

Enligt en utforingsform av foreliggande uppfinning innefattar fordonet ett andra kylsystem som är anpassad att kyla forbranningsmotorn och att arrangemanget innefattar en andra ledningskrets som är anpassad att mottaga kylvatska fran det andra kylsystemet och leda kylvatskan till namnda varmevaxlare d kylvatskan i det andra kylsystemet har en temperatur Over ett forbestamt temperaturvarde. Det andra kylsystemet kan betecknas som ett hogtemperaturkylsystem som under de fiesta 3 drifttillfallen har en hogre temperatur an det forsta kylsystemet. Kylvdtskan i det andra kylsystemet som kyler forbranningsmotorn har emellertid en temperatur som stiger relativt langsamt efter en kallstart. Det beror frdmst pa att det tar en lang tid att vdrma upp forbranningsmotorn som har en relativt stor massa. Enligt uppfinningen utnyttjas kylvdtskan i det forsta kylsystemet som varms upp snabbt av den komprimerade luften i laddluftkylaren for att varma upp namnda utrymme i fordonet i ett forsta skede varefter kylvdtskan i det andra kylsystemet tar Over uppvarmningen av utrymmet da den erhallit en hogre temperatur an kylvdtskan i det forsta kylsystemet. According to an embodiment of the present invention, the vehicle comprises a second cooling system which is adapted to cool the internal combustion engine and that the arrangement comprises a second line circuit which is adapted to receive cooling liquid from the second cooling system and direct the cooling liquid to said heat exchanger. a predetermined temperature value. The second cooling system can be described as a high temperature cooling system which during most operating conditions has a higher temperature than the first cooling system. However, the cooling vessel in the second cooling system which cools the internal combustion engine has a temperature which rises relatively slowly after a cold start. This is mainly due to the fact that it takes a long time to heat up the internal combustion engine, which has a relatively large mass. According to the invention, the cooling unit in the first cooling system which is heated rapidly by the compressed air in the charge air cooler is used to heat said space in the vehicle in a first stage after which the cooling unit in the second cooling system takes over the heating of the space when it has obtained a higher temperature. the first cooling system.

Enligt en utforingsform av foreliggande uppfinning innefattar arrangemanget en ventil i den forsta ledningskretsen och en styrenhet som är anpassad stanga ventilen och stoppa flodet av kylvdtska fran det forsta kylsystemet till naninda varmevaxlare da kylvdtskan i det andra kylsystemet har en temperatur over det forbestdmda temperaturvardet. Med hjdlp av en sadan ventil kan kylvdtskeflodet fran det forsta kylsystemet till varmevaxlaren stoppas trots att ventilanordningen är i ett oppet ldge. According to an embodiment of the present invention, the arrangement comprises a valve in the first conduit circuit and a control unit adapted to shut off the valve and stop the flow of cooling fluid from the first cooling system to naninda heat exchangers as the cooling fluid in the second cooling system has a temperature above the predetermined temperature value. With the aid of such a valve, the cooling liquid flow from the first cooling system to the heat exchanger can be stopped even though the valve device is in an open position.

En ventil eller liknande i den andra ledningskretsen kan darefter stallas i ett oppet ldge sa att kylvdtska fran det andra kylsystemet leds till varmevaxlaren da kylvdtskan i det andra kylsystemet har en temperatur Over det forbestamda temperaturvardet. Darmed kan varmevaxlaren mottaga varm kylvdtskan fran de olika kylsystemen pa ett ldtt utbytbart att. A valve or the like in the second line circuit can then be placed in an open compartment so that the cooling fluid from the second cooling system is led to the heat exchanger as the cooling fluid in the second cooling system has a temperature above the predetermined temperature value. This allows the heat exchanger to receive hot cooling fluid from the various cooling systems in an easily replaceable way.

Enligt en utforingsform av foreliggande uppfinning innefattar den andra ledningskretsen ett inlopp som ar forbundet med en ledning som mottar kylvdtska fran forbranningsmotorn i det andra kylsystemet. Darmed kan den varma kylvdtskan som ldmnar forbranningsmotorn vdsentligen direkt ledas in i den andra ledningskretsen och ledas till varmevaxlaren. Den andra ledningskretsen kan innefatta ett utlopp som är forbundet med en bypassledning som leder kylvdtska forbi en kylare i det andra kylsystemet utan att kylas. Kylvdtskan som har utnyttjats i varmevaxlaren leds saledes inte genom kylaren i det andra kylsystemet. Kylvdtskan kan i och med det ha en hogre temperatur da den ater leds till viirmeydxlaren vilket gynnar den fortsatta uppyarmningen av utrymmet. Namnda forsta ledningskrets kan innefatta ett inlopp som ar forbundet med en del av det andra kylsystemet som är beldget pa en trycksida hos en kylvdtskepump som cirkulerar kylvdtska i det andra kylsystemet och ett utlopp som ar forbundet med en del av det andra kylsystemet som ar beldget pa en sugsida hos kylvdtskepumpen. Darmed kan kylvdtskan cirkuleras genom den andra ledningskretsen med hjalp av den ordinarie kylvdtskepumpen i det andra kylsystemet. 4 Enligt en utforingsform av foreliggande uppfinning är varmevaxlaren i kontakt med luft i namnda utrymme som forceras genom varmevaxlaren med hjalp av en flakt. Darmed kan luften i utrymmet erhalla en snabb uppvarmning. Utrymmet är med fordel ett hyttutrymme i fordonet. Med hjalp av arrangemanget kan en snabb uppvarmning erhallas av luften sa att en fOrare och eventuella passagerare i hyttutrymmet inte behover kla pa sig ytterklader i samband med en kallstart av fordonet dâ det raider en lag omgivande temperatur. According to an embodiment of the present invention, the second line circuit comprises an inlet connected to a line which receives cooling fluid from the internal combustion engine in the second cooling system. As a result, the hot cooling fluid which feeds the internal combustion engine can essentially be led directly into the second line circuit and led to the heat exchanger. The second conduit circuit may comprise an outlet connected to a bypass conduit which conducts cooling water past a cooler in the second cooling system without cooling. The cooling fluid that has been used in the heat exchanger is thus not led through the cooler in the other cooling system. As a result, the cooling vessel can have a higher temperature as it is led back to the heat exchanger, which favors the continued heating of the space. The first conduit circuit may comprise an inlet connected to a part of the second cooling system which is bellows on a pressure side of a coolant pump circulating coolant in the second cooling system and an outlet connected to a part of the second cooling system which is bellows on a suction side of the coolant pump. This allows the coolant to be circulated through the second line circuit with the help of the ordinary coolant pump in the second cooling system. According to an embodiment of the present invention, the heat exchanger is in contact with air in said space which is forced through the heat exchanger by means of a flake. This allows the air in the room to receive a rapid heating. The space is advantageously a cab space in the vehicle. With the help of the arrangement, a rapid heating of the air can be obtained so that a driver and any passengers in the cab space do not have to put on outer clothing in connection with a cold start of the vehicle as it rides a low ambient temperature.

KORT BESKRIVNING AV RITNINGEN I det foljande beskrivs, sasom ett exempel, en foredragen utforingsform av uppfinningen med hanvisning till bifogade riffling, pa vilken: Fig. 1visar ett arrangemang for uppvarmning av ett hyttutrymme i ett fordon. BRIEF DESCRIPTION OF THE DRAWING In the following, as an example, a preferred embodiment of the invention is described with reference to the accompanying corrugation, in which: Fig. 1 shows an arrangement for heating a cabin space in a vehicle.

DETALJERAD BESKRIVNING AV EN FOREDRAGEN UTFORINGSFORM AV UPPFINNINGEN Fig. 1 visar schematiskt ett fordon 1 som drivs av en forbranningsmotor 2. Fordonet 1 kan vara ett tungt fordon och forbranningsmotom 2 kan vara en dieselmotor eller en ottomotor. Forbranningsmotorns 2 avgaser leds ut genom en avgasledning 3. Fordonet 1 innefattar ett turboaggregat med en turbin 4 och en kompressor 5. Turbinen 4 drivs av avgasema i avgasledningen 3. Turbinen 4 driver kompressom 5 som komprimerar luft som, via en inloppsledning 6, leds till forbranningsmotom 2. Inloppsledningen 6 innefattar en laddluftkylare 7 dar den komprimerade luften kyls innan den leds in i forbranningsmotom 2. DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION Fig. 1 schematically shows a vehicle 1 driven by an internal combustion engine 2. The vehicle 1 may be a heavy vehicle and the internal combustion engine 2 may be a diesel engine or an otto engine. The exhaust gases of the internal combustion engine 2 are led out through an exhaust line 3. The vehicle 1 comprises a turbo unit with a turbine 4 and a compressor 5. The turbine 4 is driven by the exhaust gases in the exhaust line 3. The turbine 4 drives the compressor 5 which compresses air which, via an inlet line 6, is led to combustion engine 2. The inlet line 6 comprises a charge air cooler 7 where the compressed air is cooled before it is led into the combustion engine 2.

Fordonet 1 innefattar ett hogtemperaturkylsystem 8 som kyler forbranningsmotorn 2. En kylvatskepump 9 cirkulerar en kylvatska i hogtemperaturkylsystemet 8. The vehicle 1 comprises a high temperature cooling system 8 which cools the internal combustion engine 2. A cooling water pump 9 circulates a cooling water in the high temperature cooling system 8.

Kylvatskepumpen 9 är anordnad i en inloppsledning 10 som leder kylvatska till forbranningsmotorn 2. Kylvatskan som passerat genom forbranningsmotom 2 mottas i en utloppsledning 11. Utloppsledningen 11 innefattar aven en retarderkylare 12 for kylning av hydraulolja i en hydraulisk retarder. Efter att kylvatskan passerat genom retarderkylaren 12 leds den vidare i utloppsledningen 11 till en termostat 13. Da kylvatskan har en lagre temperatur an termostatens 13 regleringstemperatur stalls den i ett forsta lage i vilket den leder i kylvatskan i utloppsledningen 11 till en bypassledning 14 och ater till forbranningsmotorn 2 utan kylning Da kylvatskan har en hogre temperatur an termostatens regleringstemperatur stalls den i ett andra lage i vilket den leder kylvatskan i ledningen 11 till en ledning 15 och en kylare 16 som är anordnad vid ett framre parti av fordonet 1. Kylvatskan kyls i kylaren 16 av luft som forceras genom kylaren 16 med hjalp av en kylflakt 17 och fordonets fartvind. The coolant pump 9 is arranged in an inlet line 10 which leads coolant to the internal combustion engine 2. The coolant which has passed through the internal combustion engine 2 is received in an outlet line 11. The outlet line 11 also comprises a retarder cooler 12 for cooling hydraulic oil in a hydraulic retarder. After the coolant has passed through the retarder cooler 12, it is passed on in the outlet line 11 to a thermostat 13. Since the coolant has a lower temperature than the thermostat 13's control temperature, it is placed in a first layer in which it leads in the coolant in the outlet line 11 to a bypass line 14. combustion engine 2 without cooling Since the coolant has a higher temperature than the control temperature of the thermostat, it is stored in a second layer in which it leads the coolant in line 11 to a line 15 and a cooler 16 which is arranged at a front part of the vehicle 1. The coolant is cooled in the radiator 16 of air forced through the radiator 16 by means of a radiator 17 and the vehicle wind speed.

Kylflakten 17 drivs av forbranningsmotorn 2 med hjalp av en lamplig, icke visad, forbindning. Den kylda kylvatskan som lamnar kylaren 16 leds, via en returledning 18, ater till inloppsledningen10 och fOrbranningsmotorn 2. The cooling surface 17 is driven by the internal combustion engine 2 by means of a suitable, not shown, connection. The cooled coolant which leaves the cooler 16 is led, via a return line 18, back to the inlet line 10 and the internal combustion engine 2.

Hogtemperaturkylsystemet 8 innefattar en ledningskrets 19 som har en delvis parallell strackning i fOrhallande till hOgtemperaturkylsystemets 8 ordinarie strackning. The high temperature cooling system 8 comprises a line circuit 19 which has a partially parallel tension in relation to the ordinary tension of the high temperature cooling system 8.

Ledningskretsen 19 bar ett inlopp 19a som är forbunden med utloppsledningen 11. I regel liar kylvatskan sin hogsta temperatur i utloppsledningen 11 efter att den kylt forbranningsmotorn 2. Ledningskretsen 19 liar ett utlopp 19b i bypassledningen 14. Ledningskretsen 19 innefattar ett omrade med tvâ parallella ledningar i form av en forsta ledning 19c och en andra ledning 19d. Den forsta parallella ledningen 19c innefattar en forsta ventil 20a med vilken kylvatskeflOdet genom den forsta parallella ledningen 19c kan regleras. Den andra parallella ledningen 19d innefattar en andra ventil 20b med vilken kylvatskeflodet genom den andra parallella ledningen 19d kan regleras. Den andra parallella ledningen 19d innefattar alien en varmevaxlare 21 som är anordnad i ett utrymme 22 i fordonet som kan vara ett hyttutrymme. Med hjalp av en flakt 23 som drivs av en elmotor 24 forceras luft genom varmevaxlaren 22. Luften i utrymmet 22 kan (Farmed tillhandahalla en uppviirmning av kylvatskan som leds genom varmevaxlaren 21. En tredje ventil 20c är anordnad i en del av ledningskretsen 19 som är belagen nedstroms de parallella ledningarna 19c, 19d. The line circuit 19 carried an inlet 19a which is connected to the outlet line 11. As a rule, the cooling liquid reaches its highest temperature in the outlet line 11 after it has cooled the internal combustion engine 2. The line circuit 19 has an outlet 19b in the bypass line 14. The line circuit 19 comprises an area with two parallel lines in in the form of a first conduit 19c and a second conduit 19d. The first parallel line 19c comprises a first valve 20a with which the cooling water flow through the first parallel line 19c can be regulated. The second parallel line 19d comprises a second valve 20b with which the cooling water flow through the second parallel line 19d can be regulated. The second parallel line 19d comprises, alien, a heat exchanger 21 which is arranged in a space 22 in the vehicle which may be a cab space. By means of a flap 23 driven by an electric motor 24, air is forced through the heat exchanger 22. The air in the space 22 can coated downstream of the parallel conduits 19c, 19d.

Fordonet innefattar aven ett lagtemperaturkylsystem 25. Ugtemperaturkylsystemet 25 innefattar en kylare 26 som är anordnad i en position framfor kylaren 16 hos hogtemperaturkylsystemet 8. Kylvatskan i hogtemperaturkylsystemet kyls darmed i kylaren 16 av samma luft som forst kylt kylvatskan i lagtemperaturkylsystemet i kylaren 26. Kylvatskan i lagtemperaturkylsystemet 25 kyls darfor av luft med en lagre temperatur an kylvatskan i hogtemperaturkylsystemet 8. Kylvatskan som lamnar 6 kylaren 26 leds till en ledning 27 som innefattar en kylvatskepump 28 som cirkulerar kylvatskan i lagtemperaturkylsystemet 25. Ledningen 27 leder kylvatskan till laddluftkylaren 7 dar den kyler den komprimerade luften i inloppsledningen 6. Kylvatskan leds fran laddluftkylaren 7, via en ledning 29, till en vaxelladsoljekylare . Efter att kylvatskan kylt vaxelladsoljan leds den ker till kylaren 26 via en ledning 31. The vehicle also comprises a low temperature cooling system 25. The oven temperature cooling system 25 comprises a cooler 26 which is arranged in a position in front of the cooler 16 of the high temperature cooling system 8. The cooling water in the high temperature cooling system is thus cooled in the radiator 16 by the same air as first cooled coolant in the low temperature cooling system. Is therefore cooled by air at a lower temperature than the coolant in the high temperature cooling system 8. The coolant which leaves the cooler 26 is led to a line 27 which comprises a coolant pump 28 which circulates the coolant in the low temperature cooling system 25. The line 27 leads the coolant to the charge air cooler 7 where it cools the compressed the air in the inlet line 6. The cooling vessel is led from the charge air cooler 7, via a line 29, to a gearbox oil cooler. After the coolant has cooled the gear oil, it is led to the cooler 26 via a line 31.

Lagtemperaturkylsystemet 25 innefattar en ledningskrets 32 som har en delvis parallell strackning i fOrhallande till lagtemperaturkylsystemets ordinarie strackning Ledningskretsen 32 har ett inlopp 32a som är forbundet med ledningen 29 som mottar kylvatska fran laddluftkylaren 7. I regel har kylvatskan en relativt hog temperatur i ledningen 29 efter att den kylt den komprimerade luften i laddluftkylaren 7. Ledningskretsen 32 innefattar ett utlopp 32b som är forbundet ledningen 27. Utloppet 32b är forbundet med ledningen 27 i en position nedstroms kylaren 26 och uppstroms kylvatskepumpen 28. Ledningskretsen 32 innefattar ett ventilorgan 33 som aktiveras av en pneumatisk aktuator 34. Den pneumatiska agitatorn 34 kanner av trycket i inloppsledningen 6. I detta fall sker det via en tryckledning 35. Den pneumatiska aktuatorn 34 kan innefatta ett flexibelt membran som är i kontakt med den trycksatta luften i ledningen 35 och en sang eller liknande med vilken membranets position kan overforas till ett motsvarande lage hos ventilorganet 33 som kan stallas i ett stangt lage och ett Oppet lage. I de fall som trycket i inloppsledningen 6 och tryckledningen är hogre an ett forbestamt tryck p staller aktuatorn ventilorganet 33 i det oppna laget. I de fall som trycket i inloppsledningen 6 och tryckledningen är lagre an det forbestamda trycket p staller aktuatorn 34 ventilorganet 33 i det stangda laget. I det Oppna laget tinker ventilorganet 33 att kylvatska leds till varmevaxlaren 21 via ledningskretsen 32. The low temperature cooling system 25 comprises a line circuit 32 which has a partially parallel tension in relation to the ordinary tension of the low temperature cooling system. The line circuit 32 has an inlet 32a connected to the line 29 which receives coolant from the charge air cooler 7. it cooled the compressed air in the charge air cooler 7. The line circuit 32 comprises an outlet 32b which is connected to the line 27. The outlet 32b is connected to the line 27 in a position downstream of the cooler 26 and upstream of the coolant pump 28. The line circuit 32 comprises a valve means 33 actuated by a pneumatic actuator 34. The pneumatic agitator 34 senses the pressure in the inlet line 6. In this case it takes place via a pressure line 35. The pneumatic actuator 34 may comprise a flexible membrane which is in contact with the pressurized air in the line 35 and a song or the like with which position of the membrane can be transferred to a corresponding bearing of the valve member 33 which can be housed in a rod bearing and an Oppet bearing. In cases where the pressure in the inlet line 6 and the pressure line is higher than a predetermined pressure, the actuator places the valve member 33 in the open layer. In cases where the pressure in the inlet line 6 and the pressure line is lower than the predetermined pressure, the actuator 34 places the valve member 33 in the closed layer. In the open layer, the valve means 33 tinks that coolant is led to the heat exchanger 21 via the line circuit 32.

I det stangda laget forhindrar ventilorganet 33 att kylvatska leds till varmevaxlaren 21 via ledningskretsen 32. In the closed layer, the valve means 33 prevents coolant from being led to the heat exchanger 21 via the line circuit 32.

Ledningskretsen 32 innefattar en ventil 36a i en position uppstroms varmevaxlaren 21 och en ventil 36b i en position nedstrOms viirmevaxlaren 21. En styrenhet 37 är anpassad att styra ventilerna 20a, 20b, 20c, 36a, 36b med information 38 avseende en temperatur som onskad uppratthallas i hyttutrymmet. Informationen 38 avseende den temperatur som onskas uppratthallas i utrymmet 22 kan definieras av foraren. Styrenheten 37 mottar aven information fran en temperatursensor 39 som avkanner den radande temperaturen i hyttutrymmet 22 och information 40 fran en sensor som 7 avkanner kylvatskans temperatur i hogtemperaturkylsystemet 8. Kylvatskans temperatur i hogtemperaturkylsystemet 8 avkanns med fordel i ledningen 11. The line circuit 32 comprises a valve 36a in a position upstream of the heat exchanger 21 and a valve 36b in a position downstream of the heat exchanger 21. A control unit 37 is adapted to control the valves 20a, 20b, 20c, 36a, 36b with information 38 regarding a temperature which is desirably maintained in the cabin space. The information 38 regarding the temperature that is desired to be maintained in the space 22 can be defined by the driver. The control unit 37 also receives information from a temperature sensor 39 which senses the radiating temperature in the cabin space 22 and information 40 from a sensor which senses the temperature of the cooling water in the high temperature cooling system 8. The temperature of the cooling water in the high temperature cooling system 8 is advantageously sensed in line 11.

Da fordonets forbranningsmotor 2 startar efter att varit avstangd en tid har kylvatskan i hogtemperaturkylsystemet 8 och kylvatskan i lagtemperaturkylsystemet 25 vasentligen omgivningens temperatur. Styrenheten 37 mottar information 38 avseende den onskade temperaturen i hyttutrymmet och den radande temperaturen 39 i hyttutrymmet 22. Om temperaturen i hyttutrymmet 22 är lagre an den onskade temperaturen behover hyttutrymmet 22 varmas upp. En forbranningsmotor 2 har en relativt stor massa som behover varmas upp efter en kallstart. Det tar darfor en relativt lang tid innan kylvatskan i hogtemperaturkylsystemet kommer upp i en onskad drifttemperatur. Kylvatskan i hogtemperaturkylsystemet kan saledes inte utnyttjas fOr att tillhandahalla en snabb uppvarmning av hyttutrymmet 22 i samband med en kallstart. Styrenheten 35 staller dad& ventilerna 20a, 20b, 20c i ett stangt lage i samband med en kallstart. I och med det leds ingen kylvatska genom den andra ledningskretsen 19 som saledes utg& en del av hogtemperaturkylsystemet 8. When the vehicle's internal combustion engine 2 starts after being switched off for a while, the coolant in the high temperature cooling system 8 and the coolant in the low temperature cooling system 25 have essentially the ambient temperature. The control unit 37 receives information 38 regarding the desired temperature in the cabin space and the radiating temperature 39 in the cabin space 22. If the temperature in the cabin space 22 is lower than the desired temperature, the cabin space 22 needs to be heated. An internal combustion engine 2 has a relatively large mass that needs to be heated up after a cold start. It therefore takes a relatively long time before the cooling water in the high-temperature cooling system reaches a desired operating temperature. The cooling liquid in the high temperature cooling system can thus not be used to provide a rapid heating of the cabin space 22 in connection with a cold start. The control unit 35 places the dad & valves 20a, 20b, 20c in a closed position in connection with a cold start. As a result, no cooling water is passed through the second line circuit 19 which thus formed part of the high-temperature cooling system 8.

Styrenheten 37 staller samtidigt ventilerna 36a, 36b i Oppna lagen. Darmed kan kylvatska fran lagtemperaturkylsystemet 25 ledas till varmevaxlaren via ledningskretsen 32 sa snart som ventilorganet 33 stalls i ett oppet lage. Den pneumatiska aktuatorn 34 avkanner det tryck som luften har i inloppsledningen 6 efter att den komprimerats av kompressorn 5. Det tryck som den komprimerade luften uppvisar i inloppsledningen 6 är relaterat luftens temperatur i laddluftkylaren. Den komprimerade luftens tryck är armed aven relaterat till den temperatur som kylvatskan varms upp till av den komprimerade luften i laddluftkylaren 7. I och med att kompressorn 5 startar och komprimerar luften i inloppsledningen 6 sa. snart som det erhalls ett avgasflOde genom avgasledningen 3 erhaller kylviitskan en uppvarmning i laddluftkylaren 7 relativt snart efter att forbranningsmotorn 2 startat. Laddluftkylaren 7 har en relativt liten massa och den erhaller dad& en snabb uppvarmning liksom kylviitskan i lagtemperaturkylsystemet 25 som leds genom laddluftkylaren 7. The control unit 37 simultaneously places the valves 36a, 36b in the Open Act. Thus, cooling water from the low temperature cooling system 25 can be led to the heat exchanger via the line circuit 32 as soon as the valve means 33 is placed in an open layer. The pneumatic actuator 34 senses the pressure that the air has in the inlet line 6 after it has been compressed by the compressor 5. The pressure that the compressed air has in the inlet line 6 is related to the temperature of the air in the charge air cooler. The pressure of the compressed air is also related to the temperature at which the coolant is heated by the compressed air in the charge air cooler 7. As the compressor 5 starts and compresses the air in the inlet line 6 sa. as soon as an exhaust flow is obtained through the exhaust line 3, the cooling whistle receives a heating in the charge air cooler 7 relatively soon after the internal combustion engine 2 has started. The charge air cooler 7 has a relatively small mass and it receives a rapid heating as well as the cooling temperature in the low temperature cooling system 25 which is led through the charge air cooler 7.

Kylvatskan i lagtemperaturkylsystemet erhaller saledes en betydligt snabbare uppvarmning an kylvatskan i hogtemperaturkylsystemet efter en kallstart. Det ar dad& lampligt att i ett initialt skede efter en kallstart utnyttj a kylvatskan i lagtemperaturkylsystemet 25 for att varma upp hyttutrymmet 22 i fordonet 1. 8 Dd den pneumatiska aktuatom 34 efter en kallstart avkanner att trycket i inloppsledningen 6 är hogre an det forbestamda trycket p staller den ventilorganet 33 i det Oppna ldget. Kylvdtskan som lamnar laddluftkylaren 7 har en relativt hog temperatur. Den varma kylvdtskan leds in i ledningskretsen 32 via inloppet 32a och till varmevaxlaren 21 ddr den vdrmer upp luften i utrymmet 22 som forceras genom varmevaxlaren 21 med hjalp av kylflakten 23. Kylvdtskan leds darefter ut fran ledningskretsen 32 via utloppet 32b i ledningen 27 hos lagtemperaturkylsystemet 25. Kylvdtskan i lagtemperaturkylsystemet 25 leds sdledes forbi kylaren 26. Darmed kan kylvdtskan i lagtemperaturkylsystemet uppratthalla en relativt hog temperatur da den utnyttjas for att varma luften i hyttutrymmet 22. Med hjdlp av den varma kylvdtskan i lagtemperaturkylsystemet 25 kan hyttutrymmet relativt snabbt erhalla en uppvarmning till en nivâ som vasentligen motsvarar den Onskade temperaturen 38. Kylvdtskan i ldgtemperaturkylsystemet 25 utnyttjas for uppvarmning av luften i hyttutrymmet tills kylvdtskan i hogtemperaturkylsystemet erhallit en hogre temperatur an ett forbestamt temperaturvarde. Det forbestamda temperaturvardet är av en storlek vid vilken kylvdtskan i hogtemperaturkylsystemet ldmpligen tar Over uppvarmningen av hyttutrymmet 22. Det forbestamda temperaturvardet kan vara av storleksordningen 500. The coolant in the low-temperature cooling system thus obtains a much faster heating than the coolant in the high-temperature cooling system after a cold start. It is advisable to use the coolant in the low temperature cooling system 25 in an initial stage after a cold start to heat the cabin space 22 in the vehicle 1. After the cold start the pneumatic actuator 34 detects that the pressure in the inlet line 6 is higher than the predetermined pressure on it places the valve member 33 in the Obtained. The cooling vessel which leaves the charge air cooler 7 has a relatively high temperature. The hot cooling fluid is led into the line circuit 32 via the inlet 32a and to the heat exchanger 21 where it heats the air in the space 22 which is forced through the heat exchanger 21 by means of the cooling surface 23. The cooling fluid is then led out of the lead circuit 32 via the outlet 32b The cooling air in the low temperature cooling system 25 is thus led past the cooler 26. Thus, the cooling air in the low temperature cooling system can maintain a relatively high temperature as it is used to heat the air in the cabin space 22. By means of the hot cooling air in the low temperature cooling system 25, the cabin space level which essentially corresponds to the desired temperature 38. The cooling unit in the low-temperature cooling system 25 is used for heating the air in the cabin space until the cooling unit in the high-temperature cooling system has obtained a higher temperature than a predetermined temperature value. The predetermined temperature value is of a magnitude at which the cooling value in the high temperature cooling system typically takes over the heating of the cabin space 22. The predetermined temperature value may be of the order of 500.

Dd kylvdtskan i hogtemperaturkylsystemet erhaller en hogre temperatur an det forbestamda temperaturvardet stanger styrenheten 37 ventilema 36a, 36b sâ att kylvdtskeflodet genom ledningskretsen 32 upphor. Styrenheten 36 oppnar darefter ventilema 20b, 20c sâ att varm kylvdtska leds in i ledningskretsen 19 via inloppet 19a och till varmevaxlaren 21 ddr den varmer upp luften i utrymmet 22 som forceras genom varmevaxlaren 21 med hjdlp av kylflakten 23. Kylvdtskan leds darefter ut fran ledningskretsen 19 via utloppet 19b i bypassledningen 14 i den ordinarie delen av hOgtemperaturkylsystemet 8. Kylviitskan i hogtemperaturkylsystemet 25 som leds genom varmevaxlaren 21 leds saledes forbi kylaren 16. Darmed kan kylvdtskan i hogtemperaturkylsystemet erhalla en fortsatt stigande temperatur upp till en onskad drifttemperatur. Styrenheten 37 mottar under den fortsatta driften information avseende kylvdtskan temperatur i hogtemperaturkylsystemet 8. Om kylvdtskans temperatur i hogtemperaturkylsystemet under en driftsperiod skulle bli lagre an det forbestamda temperaturvardet stanger styrenheten 37 ventilema 20a, 20b, 20c sâ att kylvdtskeflodet genom ledningskretsen 19 upphor. Den oppnar samtidigt ventilema 36a, 36b. Ventilorganet 33 dr med stor sannolikhet redan i eft oppet lage dâ trycket i inloppsledningen 6 formodligen dr hogre an namnda forbestamda tryck under de fiesta 9 drifttillstand. Varm kylvdtska frAn lagtemperaturkylsystemet 25 leds clamed genom varmevaxlaren 21 tills kylvdtskan i hogtemperaturkylsystemet 8 Ater erhaller en temperatur Over det forbestamda temperaturvardet. PA detta salt kan kylvdtskan i det av de tvA kylsystemen 8, 25 som for stunden liar hogst temperatur svara for uppvarmningen av luften i hyttutrymmet 22. When the coolant in the high-temperature cooling system obtains a higher temperature than the predetermined temperature value, the control unit 37 closes the valves 36a, 36b so that the coolant flow through the line circuit 32 ceases. The control unit 36 then opens the valves 20b, 20c so that hot coolant is led into the line circuit 19 via the inlet 19a and to the heat exchanger 21 where it heats the air in the space 22 which is forced through the heat exchanger 21 by means of the cooling surface 23. The cooler is then led out of the line circuit 19 via the outlet 19b in the bypass line 14 in the ordinary part of the high-temperature cooling system 8. The cooling vane in the high-temperature cooling system 25 which is led through the heat exchanger 21 is thus led past the cooler 16. Thus, the cooling water in the high-temperature cooling system can maintain a rising temperature. During the continued operation, the control unit 37 receives information regarding the cooling temperature in the high temperature cooling system 8. If the temperature of the cooling in the high temperature cooling system during a period of operation should be lower than the predetermined temperature value, the control unit 37 closes the valves 20a, 20b, 20c. It simultaneously opens the valves 36a, 36b. The valve member 33 is very likely to be already in the open when the pressure in the inlet line 6 is probably higher than the said predetermined pressure during most operating conditions. Hot cooling fluid from the low temperature cooling system 25 is led clamed through the heat exchanger 21 until the cooling fluid in the high temperature cooling system 8 again obtains a temperature above the predetermined temperature value. On this salt, the cooling temperature in that of the two cooling systems 8, 25 which at the currently highest temperature can be responsible for the heating of the air in the cabin space 22.

Uppfinningen är pd intet satt begransad till de beskrivna utforingsformerna utan kan varieras fritt Mom patentkravens ramar. The invention is in no way limited to the described embodiments but can be varied freely within the scope of the patent claims.

Claims (12)

PatentkravPatent claims 1. Arrangemang fOr att varma upp ett utrymme (22) i ett fordon (1), varvid fordonet (1) innefattar en forbranningsmotor (2), en kompressor (5) som är anpassad att komprimera luft som leds till forbranningsmotorn (2) via en inloppsledning (6), ett forsta kylsystem (25), en kylvatskepump (28) som är anpassad att cirkulera en kylvdtska i det forsta kylsystemet (25), en kylare (26) ddr kylvdtskan är anpassad att kylas och en laddluftkylare (7) ddr kylvdtskan i det forsta kylsystemet (25) är anpassad att kyla den komprimerade luften som leds till forbranningsmotorn (2), och varvid arrangemanget innefattar en varmevaxlare (21) som är anordnad i ett utrymme (22) som är anpassat att varmas upp i fordonet (1), en forsta ledningskrets (32) som är anpassad att leda kylvdtska fran det fOrsta kylsystemet (25) till varmevaxlaren (21) i namnda utrymme (22) och en ventilanordning (33, 34) som är anpassad att reglera kylvdtskeflodet till varmevaxlaren (22) via den forsta ledningskretsen (32), kannetecknat av att ventilanordningen (33, 34) är anpassad att stallas i ett oppet ldge da luften i inloppsledningen (6) har ett hogre tryck an ett forbestamt tryckvarde (p) och i ett stangt ldge da luften i inloppsledningen (6) har ett ldgre tryck an namnda forbestamda tryckvarde (p).An arrangement for heating a space (22) in a vehicle (1), the vehicle (1) comprising an internal combustion engine (2), a compressor (5) adapted to compress air directed to the internal combustion engine (2) via an inlet line (6), a first cooling system (25), a cooling water pump (28) adapted to circulate a cooling vessel in the first cooling system (25), a cooler (26) where the cooling vessel is adapted to be cooled and a charge air cooler (7) The cooling unit in the first cooling system (25) is adapted to cool the compressed air which is led to the internal combustion engine (2), and wherein the arrangement comprises a heat exchanger (21) which is arranged in a space (22) which is adapted to be heated in the vehicle. (1), a first conductor circuit (32) adapted to conduct cooling fluid from the first cooling system (25) to the heat exchanger (21) in said space (22) and a valve device (33, 34) adapted to regulate the cooling fluid flow to the heat exchanger (22) via the first lead circuit (32), pitcher in that the valve device (33, 34) is adapted to be stored in an open chamber when the air in the inlet line (6) has a higher pressure than a predetermined pressure value (p) and in a closed chamber when the air in the inlet line (6) has a higher pressure. press the said predetermined pressure value (p). 2. Arrangemang enligt krav 1, kdnnetecknat av att ventilanordningen innefattar ett ventilorgan (33) och en pneumatisk aktuator (34) som är anpassad att avkanna trycket i inloppsledningen (6) och att stalla ventilorganet (33) i det oppna ldget sa snart som trycket i inloppsledningen (6) overstiger det forbestamda tryckvardet (p).Arrangement according to claim 1, characterized in that the valve device comprises a valve means (33) and a pneumatic actuator (34) which is adapted to sense the pressure in the inlet line (6) and to place the valve means (33) in the open space as soon as the pressure in the inlet line (6) exceeds the predetermined pressure value (p). 3. Arrangemang enligt krav 1 eller 2, kannetecknat av att namnda forsta ledningskrets (32) innefattar ett inlopp (32a) som är forbundet med en ledning (29) som mottar kylvdtska fran laddluftkylaren (7) i det forsta kylsystemet (25).Arrangement according to claim 1 or 2, characterized in that said first line circuit (32) comprises an inlet (32a) connected to a line (29) which receives cooling water from the charge air cooler (7) in the first cooling system (25). 4. Arrangemang enligt nagot av foregaende krav, kannetecknat av att namnda forsta ledningskrets (32) innefattar ett utlopp (32b) som är fOrbundet med en ledning (27) som mottar kylvdtska fran kylaren (26) i det forsta kylsystemet (25).Arrangement according to any one of the preceding claims, characterized in that said first line circuit (32) comprises an outlet (32b) connected to a line (27) which receives cooling water from the radiator (26) in the first cooling system (25). 5. Arrangemang enligt nagot av foregaende krav, kannetecknat av att namnda forsta ledningskrets (32) innefattar ett inlopp (32a) som är forbundet med en del av det forsta kylsystemet (25) som är beldget pa en trycksida hos kylvdtskepumpen (28) och ett 11 utlopp (32b) som är forbundet med en del av det forsta kylsystemet (25) som är belaget pa en sugsida hos kylvatskepumpen (28).An arrangement according to any one of the preceding claims, characterized in that said first line circuit (32) comprises an inlet (32a) connected to a part of the first cooling system (25) which is bellows on a pressure side of the coolant pump (28) and a 11 outlet (32b) connected to a part of the first cooling system (25) which is located on a suction side of the cooling water pump (28). 6. Arrangemang enligt nagot av foregaende krav, kannetecknat av att namnda forsta kylsystem är ett lagtemperaturkylsystem (25).Arrangement according to any one of the preceding claims, characterized in that said first cooling system is a low temperature cooling system (25). 7. Arrangemang enligt krav 6, kannetecknat av att fordonet (1) innefattar alien ett andra kylsystem (8) som dr anpassat att kyla forbranningsmotom (2) och att arrangemanget innefattar en andra ledningskrets (19) som är anpassad att mottaga kylvatska fran det andra kylsystemet (8) och att leda kylvdtskan till namnda varmevaxlare (21) da kylvatskan i det andra kylsystemet (8) har en hogre temperatur an ett fOrbestamt temperaturvarde.Arrangement according to claim 6, characterized in that the vehicle (1) comprises a second cooling system (8) adapted to cool the internal combustion engine (2) and that the arrangement comprises a second line circuit (19) adapted to receive cooling water from the second the cooling system (8) and to direct the cooling fluid to said heat exchanger (21) when the cooling fluid in the second cooling system (8) has a higher temperature than a predetermined temperature value. 8. Arrangemang enligt krav 7, kannetecknat av att arrangemanget innefattar en ventil (36a) i den forsta ledningskretsen (32) och en styrenhet (37) som är anpassad stanga ventilen (36a) och stoppa flodet av kylvatska fran det forsta kylsystemet till namnda varmevaxlare (21) da kylvatskan i det andra kylsystemet har en hogre temp eratur an namnda forbestamda temperaturvarde.Arrangement according to claim 7, characterized in that the arrangement comprises a valve (36a) in the first line circuit (32) and a control unit (37) adapted to shut off the valve (36a) and stop the flow of coolant from the first cooling system to said heat exchanger (21) since the cooling liquid in the second cooling system has a higher temperature than said predetermined temperature value. 9. Arrangemang enligt krav 7 eller 8, kannetecknat av att den andra ledningskretsen (19) innefattar ett inlopp (19a) som är fOrbundet med en ledning (11) som mottar kylvatska fran forbranningsmotorn (2) i det andra kylsystemet (8).Arrangement according to claim 7 or 8, characterized in that the second line circuit (19) comprises an inlet (19a) which is connected to a line (11) which receives cooling water from the internal combustion engine (2) in the second cooling system (8). 10. Arrangemang enligt nagot av foregaende krav, kannetecknat av att den andra ledningskretsen (19) innefattar ett utlopp (19b) som är forbundet med en bypassledning (14) hos det andra kylsystemet (8) vilken leder kylvdtska forbi en kylare (16) i det andra kylsystemet utan att kylas.Arrangement according to any one of the preceding claims, characterized in that the second line circuit (19) comprises an outlet (19b) which is connected to a bypass line (14) of the second cooling system (8) which leads a cooling vessel past a cooler (16) in the other cooling system without cooling. 11. Arrangemang enligt nagot av foregaende krav, kannetecknat av att den andra ledningskretsen (19) innefattar ett inlopp (19a) som är forbundet med en del av det andra kylsystemet (8) som är belaget pa en sugsida hos en kylvdtskepump (9) som cirkulerar kylvdtska i det andra kylsystemet och ett utlopp (19b) som är forbundet med en del av det andra kylsystemet (8) som är belaget pa en trycksida hos kylvatskepumpen (9). 12Arrangement according to any one of the preceding claims, characterized in that the second line circuit (19) comprises an inlet (19a) which is connected to a part of the second cooling system (8) which is coated on a suction side of a cooling water pump (9) which circulating coolant in the second cooling system and an outlet (19b) connected to a part of the second cooling system (8) which is located on a pressure side of the cooling water pump (9). 12 12. Arrangemang enligt nagot av foregdende krav, kannetecknat av att varmevaxlaren (21) är i kontakt med luft i namnda utrymme som forceras genom varmevaxlaren med hjalp av en fldkt (23). 13 1/1 19d 20b 32 36b 34 11 3 36a 23 24 19c 21 20c 20a 3 19a 9 ,32a 17 1 18 29 32b 28 27 [38_ => 26Arrangement according to any one of the preceding claims, characterized in that the heat exchanger (21) is in contact with air in said space which is forced through the heat exchanger with the aid of a fluid (23). 13 1/1 19d 20b 32 36b 34 11 3 36a 23 24 19c 21 20c 20a 3 19a 9, 32a 17 1 18 29 32b 28 27 [38_ => 26
SE1450726A 2014-06-12 2014-06-12 Arrangement for heating a space in a vehicle SE538033C2 (en)

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SE1450726A SE538033C2 (en) 2014-06-12 2014-06-12 Arrangement for heating a space in a vehicle
DE102015007533.0A DE102015007533A1 (en) 2014-06-12 2015-06-11 Arrangement for heating a room in a vehicle

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DE102016015794B4 (en) 2016-12-15 2023-08-10 Deutz Aktiengesellschaft internal combustion engine
DE102016014904A1 (en) * 2016-12-15 2018-06-21 Deutz Aktiengesellschaft Internal combustion engine
DE102016015796B4 (en) 2016-12-15 2023-02-23 Deutz Aktiengesellschaft internal combustion engine
DE102017118425A1 (en) * 2017-08-13 2019-02-14 Konvekta Aktiengesellschaft Circulatory system for a vehicle and method

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DE202013102685U1 (en) 2013-06-20 2013-08-01 Ford Global Technologies, Llc Vehicle heating system for heating the interior of a vehicle

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