CN101988424A - Throttling of spark ignition type internal combustion engine with air/water intermediate cooler - Google Patents
Throttling of spark ignition type internal combustion engine with air/water intermediate cooler Download PDFInfo
- Publication number
- CN101988424A CN101988424A CN2010102432482A CN201010243248A CN101988424A CN 101988424 A CN101988424 A CN 101988424A CN 2010102432482 A CN2010102432482 A CN 2010102432482A CN 201010243248 A CN201010243248 A CN 201010243248A CN 101988424 A CN101988424 A CN 101988424A
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- China
- Prior art keywords
- air
- combustion engine
- engine
- cooling circuit
- internal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
- F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
- F02M31/04—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating combustion-air or fuel-air mixture
- F02M31/042—Combustion air
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2060/00—Cooling circuits using auxiliaries
- F01P2060/08—Cabin heater
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- 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
Abstract
Throttling of a spark ignition type internal combustion engine with an air/water intermediate cooler relates to an internal combustion engine. Fresh air is input into an air inlet end of the internal combustion engine, wherein the internal combustion engine (1) comprises a cooling system with an engine cooling loop (2) and comprises an air cooling loop (3) with an air cooler (22). For preventing or at least reducing air exchange loss when the internal combustion engine (1) operates with partial load, the invention suggests that: the cooling system is provided with a partial load bypass (28); the partial load bypass is branched from the engine cooling loop (2) or an engine heating loop (9) before a chamber heat exchanger (14) of the engine cooling loop (2). Therefore the coolant from the engine cooling loop (2) is conveyed through the air cooler (22) when the internal combustion engine (1) operates with partial load. Furthermore the bypass is converged into the engine cooling loop (2) or the engine heating loop (9) before the chamber heat exchanger of the engine cooling loop. Therefore when the internal combustion engine (1) operates with partial load, the fresh air at an air inlet end can be generally heated to a temperature which is higher than the cooling temperature of the air cooler (22) without blending.
Description
Technical field
The present invention relates to a kind of internal-combustion engine from inlet end input fresh air, this internal-combustion engine comprises the cooling system that has engine cooling circuit, and comprises the air cooling loop that has air-cooler.
Background technique
EP 1 623 101 B1 disclose a kind of cooling circuit, are used for charge air cooling in having the Motor Vehicle of turbocharger, and this cooling circuit comprises the low-temperature circuit that has subcolling condenser.This loop has turbo machine/pump combination, links together to the antitorque commentaries on classics of pump and turbo machine in this combination.Described turbo machine can drive by the freezing mixture in the main coolant loop, and wherein said pump impels the low-temperature circuit circulation.According to the description of EP 1 623 101 B1, main coolant loop and low-temperature circuit can be connected to each other, and wherein main coolant loop has primary cooler.By main coolant loop and low-temperature circuit are coupled together, low-temperature circuit just has been integrated in the main coolant loop, thereby can limit the cooling of pressurized air under certain running state of internal-combustion engine.If the temperature of pressurized air is conditioned, that is to say that the cooling of pressurized air is limited, then can save (umgehen) subcolling condenser according to an embodiment.
With respect to diesel engine, four stroke engine has the process loss (Prozessverlust) that is subjected to the combustion process restriction, promptly so-called gas exchange loss when operation at part load.Diesel engine for example always sucks the air of equivalent in the cylinder (even in supercharged diesel engine or internal-combustion engine, for saying also that for simplicity becoming is " suction ").For regulating load, need the fuel share of inequality is input in the firing chamber, thereby all obtain different fuel-air ratios at every turn.
Four stroke engine almost always needs the fuel-air ratio (Lambdda1 that equates when sub load; Air just equals the required air of fuel combustion).As long as the fuel that is input to when sub load in the four stroke engine is few more, it is must inhaled air also few more so.For this reason, for example throttle part need be set in suction tude, this suction tude is introduced fresh air in the internal-combustion engine.This throttle part can for example be designed to throttle valve, thus the air-flow or the mass flow of restraining fresh air.Can produce low pressure this moment.For overcoming this low pressure, piston (or a plurality of piston) must suck fresh air in cylinder (or a plurality of cylinder) or firing chamber (or a plurality of firing chamber), this means than consume more energy under external pressure.Can cause process to lose gas exchange loss in other words thus.Gas exchange loss can have a negative impact to the efficiency of internal combustion engine and fuel consume.
Summary of the invention
The objective of the invention is to, improve the internal-combustion engine or the cooling system of aforementioned type with simple method, thereby avoid aforementioned disadvantages, wherein when improving fuel consume, can be in the efficient of avoiding improving under the situation of gas exchange loss internal-combustion engine.
According to the present invention, this purpose is achieved by the internal-combustion engine with the described feature of this specification.
Suitable is that under the sub load operating condition of internal-combustion engine, the distolateral fresh air of air inlet is not heated to a temperature that is higher than the air-cooler chilling temperature with generally can having foreign substance.
Advantageously, the rising of fresh air temperature reduces fresh air density, thereby makes internal-combustion engine in order to realize lambda=1, must control a spot of low pressure when fresh air is heated.Like this, will avoid the formation of low pressure to a great extent, because described throttle valve needn't very be controlled fresh air stream consumingly by throttle valve.And if produce a spot of low pressure (on amount), then gas exchange loss also will correspondingly reduce, because fresh air stream needn't very be controlled consumingly, thereby makes piston (or a plurality of piston) needn't need overcome very big low pressure again when sucking.This produces favorable influence with direct reduction to the efficiency of internal combustion engine and fuel consume again.
In addition, the present invention is based on such understanding, i.e. the exhaust of internal-combustion engine can be input in the fresh air by so-called exhaust gas recirculation (AGR).Although in gas recirculation system, be provided with cooling-part, can carry out certain heating to fresh air by this sneaking into also.What here, the present invention adopted is another kind of way; Because according to the present invention, not by designing this sneak into or other are used to heat sneaking into of fresh air and heat for fresh air.But also needn't abandon AGR for this reason.Importantly, under the operation at part load situation of the internal-combustion engine four stroke engine of load (preferably), simply fresh air is heated by this way, promptly in existing charger-air cooler or select to flow the freezing mixture of engine cooling circuit, select flowing the freezing mixture of pressurized air cooling circuit, thereby correspondingly fresh air is heated.Thus, favourable design is, in air-cooler, flowing from engine cooling circuit or from the freezing mixture in air cooling loop, thereby under the operation at part load state of internal-combustion engine, when in described air-cooler, flowing the freezing mixture from the motor loop, make fresh air can be heated to one with engine cooling circuit in the suitable temperature value of temperature value of freezing mixture.On meaning of the present invention, this only just needs under the operation at part load state of internal-combustion engine.If what circulate in air-cooler is freezing mixture from the air cooling loop, fresh air correspondingly be cooled certainly (pressurized air cooling) so.
Advantageously, engine cooling circuit is linked together by switchable connection and air cooling loop on meaning of the present invention, wherein, described air cooling loop is known as the pressurized air cooling circuit hereinafter.Favourable for this reason design is, engine cooling circuit has valve arm (Ventilabzweig), this valve arm leads to the control piece of pressurized air cooling circuit, wherein, described control piece is serially connected with pump on the circulating direction of freezing mixture, and this pump then is serially connected with charger-air cooler.In especially favourable design proposal, from the described valve arm of engine cooling circuit on the output end from the circulating direction of freezing mixture, be arranged in and lead to main heat exchanger
Branch road after, and be arranged in the cabin heat exchanger
Before.
Suitable is, the pressurized air cooling circuit has connecting tube, after this conduit of circulating direction of freezing mixture is arranged in charger-air cooler, and is to import the engine cooling circuit before the heat exchanger of cabin from the circulating direction of freezing mixture.
In preferred design proposal, the control piece of pressurized air cooling circuit is designed to three-way valve.Control piece is designed to switchable valve, and this valve is controlled by Operational Limits.For this reason, control piece can link together with the controller of Motor Vehicle.With regard to Operational Limits, control piece can preferably be adjusted to operation at part load or oepration at full load.
Importantly, under the operation at part load state of internal-combustion engine, engine cooling circuit and pressurized air cooling circuit link together by valve branch road and connecting tube.Like this, in the preferred design as three-way valve, control piece is then correspondingly switched, thereby freezing mixture can be flowed into the pressurized air cooling circuit from engine cooling circuit.Then close pressurized air cooling circuit originally.Therefore, when control piece was correspondingly switched, two kinds of freezing mixture streams in the loop that separated before two can not mix.Having such path only can be circulated, and promptly this path has valve branch road, control piece, pump and flow through charger-air cooler and recirculation and enter engine cooling circuit by connecting tube.
In engine cooling circuit, freezing mixture just has the temperature up to 105 ℃ at output terminal after leaving internal-combustion engine.Thus, the freezing mixture that circulates in above-mentioned circulation path in other words in the pressurized air cooling circuit can have corresponding temperature.If the freezing mixture of such heat enters charger-air cooler, the fresh air of this freezing mixture of then flowing through correspondingly can heating or is heated.
Therefore fresh air is heated in simple mode, its density thereby be minimized.Advantageously produced compared with prior art lower low voltage value thus.Advantageously reduced gas exchange loss thus.
The present invention is especially favourable for the four stroke engine with at least one turbo machine.In this motor, for charge air cooling is provided with charger-air cooler.This charger-air cooler is cooled to about 30 to 45 ℃ with pressurized air or fresh air.When the internal-combustion engine oepration at full load, control piece can switch, thereby two cooling circuits are separated from each other.Only when operation at part load, just can connect, freezing mixture just can be got back to the engine cooling circuit by " valve branch road, control piece, pump, charger-air cooler and connecting tube " this path drainage from engine cooling circuit in other words, and can not make two freezing mixtures stream mix (be present in that freezing mixture has the temperature suitable with the air cooling loop in the path, this freezing mixture with situation that the freezing mixture that enters does not mix under from described path, draw.) described path also can be known as sub load bypass (Teillastumgehung).Thus, cooling system has the sub load bypass, this bypass diverged from its heating circuit from engine cooling circuit before the heat exchanger of the cabin of described engine cooling circuit in other words, thereby the freezing mixture of engine cooling circuit is carried by air-cooler when the internal-combustion engine operation at part load, and this bypass imported in engine cooling circuit or its heating circuit before the exchanger of the cabin of described engine cooling circuit, thereby when the internal-combustion engine operation at part load, the distolateral fresh air of air inlet generally can not have and is heated to a temperature that is higher than the air-cooler chilling temperature with sneaking into.Certainly, described sub load bypass also can be applicable in the internal-combustion engine with pressurized air cooling circuit, this moment, the sub load bypass can only could be installed under the situation that its assembly is adjusted accordingly, and wherein, the assembly charger-air cooler can be designed to corresponding heat exchanger.Reasonable manner is preferably to utilize existing pressurized air cooling circuit.Charger-air cooler thereby have dual functions.On the one hand, charger-air cooler plays the effect of charge air cooling.On the other hand, charger-air cooler heats fresh air when operation at part load, and at this moment, two freezing mixture streams do not mix.
Description of drawings
Other favourable design proposal of the present invention is disclosed in the description of the drawings below.
Unique accompanying drawing 1: the internal-combustion engine that there is shown cooling circuit in principle with distribution.
Embodiment
Internal-combustion engine 1 shown in Fig. 1 has engine cooling circuit 2 and air cooling loop 3.Air cooling loop 3 is known as pressurized air cooling circuit 3 hereinafter.Freezing mixture, the preferably freezing mixture of traditional type are circulating respectively in two cooling circuits 2 and 3.The not shown suction tude that is used to import fresh air in Fig. 1.Same not shown throttling element in suction tude.The diagram of turbo machine has also been save.Thus, the internal-combustion engine shown in the accompanying drawing 1 is suitable with prior art basically.
Internal-combustion engine 1 has water pump 4 and a thermoregulator 6 in that air inlet is distolateral.At the distolateral run 7 that is furnished with of exhaust, this run 7 is derived the freezing mixture that is circulating from internal-combustion engine 1.Run 7 leads to chiller circuit 8 and heating circuit 9, and these two loops constitute the main in other words cooling circuit of engine cooling circuit 2 with run 7.
Chiller circuit 8 is distolateral from run 7 fork and go out in exhaust, and leads to main heat exchanger 12 by conduit 11.Conduit 13 leads to thermoregulator 6 from this main heat exchanger 12.Therefore, the freezing mixture that flows out from internal-combustion engine 1 flow back into again in the internal-combustion engine 1 by main heat exchanger 12 (freezing mixture is cooled therein).
Main heat exchanger 9 at first is depicted as the continuity of run 7, thereby makes the freezing mixture that flows out from internal-combustion engine 1 flow to cabin heat exchanger 14 or cabin heater 14.Conduit 16 leads to thermoregulator 6 from described cabin heat exchanger 14.
At the distolateral conduit 17 that also is provided with of exhaust, this conduit 17 leads to depassing unit 18.Conduit 17 looked up before the branch road of conduit 11 fork from run 7 and goes out from flow of coolant side.Conduit 19 is from the logical engine cooling circuit 2 of getting back to of depassing unit 18 in other words the heating circuit 9.Draw just as exemplary, look up from flow of coolant side, conduit 19 imports in the heating circuit 9 after cabin heat exchanger 14.
Pressurized air cooling circuit 3 has pump 21, air-cooler 22 and cooling piece 23.Between each assembly, be provided with corresponding conduit.Air-cooler 22 is known as charger-air cooler 22 hereinafter.
Pressurized air cooling circuit 3 is what to separate with engine cooling circuit 2 basically.
Importantly, pressurized air cooling circuit 3 links together with engine cooling circuit 2, and this connection can be switched like this, and promptly engine cooling circuit 2 only just connects together with pressurized air cooling circuit 3 when internal-combustion engine 1 operation at part load.If two loops 2 and 3 are connected to each other, then the freezing mixture that flows out from engine cooling circuit 2 segment section of pressurized air cooling circuit 3 of flowing through is just got back in the engine cooling circuit 2 along predetermined path flow.
Advantageously, distribute control piece 26 for pressurized air cooling circuit 3.Valve branch road 24 is from engine cooling circuit 2 fork and going out from heating circuit 9 in other words, and this valve branch road 24 imports control pieces 26.In pressurized air cooling circuit 3, look up from flow of coolant side, control piece 26 exemplarily is arranged in before the pump 21.Look up from flow of coolant side, be furnished with connecting tube 27 after charger-air cooler 22, this connecting tube 27 looks up from flow of coolant side and imported engine cooling circuit 2 in other words the heating circuit 9 before cabin heat exchanger 14.Thus, freezing mixture be before cabin heat exchanger 14 from engine cooling circuit 2 fork and going out the heating circuit 9 in other words, and before the heat exchanger of described cabin, imported once more again.
So advantageously, the corresponding assembly by pressurized air cooling circuit 3 has formed bypass section 28 sub load bypass in other words 28 with valve branch road 24, control piece 26 and connecting tube 27.
In general importantly, freezing mixture is directed in the charger-air cooler 22 from engine cooling circuit 2, and then it is drawn once more and get back in the engine cooling circuit 2.Freezing mixture perhaps can have from 90 ℃ to 105 ℃ temperature value in the distolateral temperature that has up to 105 ℃ of exhaust.This quite hot freezing mixture takes out from engine cooling circuit 2, preferably takes out from its heating circuit 9, and is input to engine cooling circuit 2 again by sub load bypass 28 in other words by the bypass section, preferably is input to again in its heating circuit 9.Around here, the engine cooling circuit 2 described quite hot freezing mixture in the heating circuit 9 in other words flows through charger-air cooler 22, fresh air also flows into by it, fresh air can the temperature of preheating up to 105 ℃, that is to say to be preheating to the temperature higher than the chilling temperature of charger-air cooler 22.The invention provides a kind of can be to being connected that switch in two loops 2 and 3, thereby make charger-air cooler 22 from two loops 2 or 3, obtain freezing mixture selectively, wherein said two loops have different temperature levels.So just advantageously realized cancelling the purpose of throttling to a certain extent with the heat mode.
Claims (8)
1. internal-combustion engine, its inlet end input fresh air, wherein said internal-combustion engine (1) comprises the cooling system that has engine cooling circuit (2), and comprise the air cooling loop (3) that has air-cooler (22), it is characterized in that, described cooling system has sub load bypass (28), this bypass diverges from the heating circuit (9) of described motor from described engine cooling circuit (2) at the cabin heat exchanger (14) of described engine cooling circuit (2) before in other words, thereby carry by described air-cooler (22) during at described internal-combustion engine (1) with operation at part load from the freezing mixture of described engine cooling circuit (2), and this bypass imports in the described heating circuit (9) of described engine cooling circuit (2) or described motor before at the cabin of described cooling system exchanger (14), thereby at described internal-combustion engine (1) during with operation at part load, the distolateral fresh air of air inlet generally can not have and is heated to a temperature that is higher than the chilling temperature of described air-cooler (22) with sneaking into.
2. internal-combustion engine according to claim 1 is characterized in that, described engine cooling circuit (2) links together by switchable connection and described air cooling loop (3).
3. internal-combustion engine according to claim 1 and 2, it is characterized in that, described engine cooling circuit (2) has valve branch road (24), described valve branch road leads to the control piece (26) in described air cooling loop (3), described control piece (26) is serially connected with pump (21), and this pump and described air-cooler (22) are serially connected.
4. internal-combustion engine according to claim 3 is characterized in that, described valve branch road (24) is arranged in after the branch road that leads to main heat exchanger (12), and is arranged in cabin heat exchanger (14) before.
5. according to the described internal-combustion engine of one of aforementioned claim, it is characterized in that, described air cooling loop (3) has connecting tube (27), this connecting tube is arranged in described air-cooler (22) afterwards, and imports before in the described engine cooling circuit (2) at described cabin heat exchanger (14).
6. according to the described internal-combustion engine of one of claim 3 to 5, it is characterized in that described control piece (26) is designed to three-way valve.
7. according to the described internal-combustion engine of one of aforementioned claim, it is characterized in that described engine cooling circuit (2) links together by valve branch road (24) and connecting tube (27) with described air cooling loop (3).
8. described according to one of aforementioned claim, be used for heating the method for the fresh air of importing internal-combustion engine, wherein in described air-cooler (22) or flowing freezing mixture from described engine cooling circuit (2), flowing freezing mixture from air cooling loop (3), therefore if when in described air-cooler (22), flowing the freezing mixture from described engine cooling circuit (2), fresh air described internal-combustion engine (1) can be heated to during with operation at part load one with described engine cooling circuit in the suitable temperature value of temperature value of freezing mixture.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009028126.6 | 2009-07-30 | ||
| DE102009028126A DE102009028126B4 (en) | 2009-07-30 | 2009-07-30 | Thermal dethrottling of an internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101988424A true CN101988424A (en) | 2011-03-23 |
| CN101988424B CN101988424B (en) | 2016-05-25 |
Family
ID=43447989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010243248.2A Expired - Fee Related CN101988424B (en) | 2009-07-30 | 2010-07-28 | There is the throttling of the spark-ignited internal combustion engine of air/water intercooler |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101988424B (en) |
| DE (1) | DE102009028126B4 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3752132A (en) * | 1971-04-19 | 1973-08-14 | Caterpillar Tractor Co | Dual cooling system for engines |
| US6601545B1 (en) * | 1999-11-11 | 2003-08-05 | Robert Bosch Gmbh | Method and device for transporting heat energy that is produced in a motor vehicle |
| US20060117748A1 (en) * | 2003-04-11 | 2006-06-08 | Steffen Bundschuh | Circuit arrangement which cools charging air and method for the operation of said type of circuit arrangement |
| US20060225417A1 (en) * | 2003-04-30 | 2006-10-12 | Behr Gmbh & Co. Kg | Circuit for cooling charge air, and method for operating such a circuit |
| US20080295811A1 (en) * | 2007-05-31 | 2008-12-04 | Caterpillar Inc. | Engine system having cooled and heated inlet air |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19924677A1 (en) * | 1999-05-29 | 2000-08-10 | Daimler Chrysler Ag | Induction system for charged combustion engine has charging air heat exchanger able to be connected to engine coolant circuit, high temp. and/or low temp. heat exchanger with liquid flow |
| DE10340908A1 (en) * | 2003-09-05 | 2005-03-31 | Daimlerchrysler Ag | Internal combustion engine for motor vehicles |
| DE102006012279A1 (en) * | 2006-03-15 | 2007-09-20 | Att Automotivethermotech Gmbh | Internal combustion engine e.g. petrol engine, suction air pre-heating method for motor vehicle, involves utilizing heating device for de-throttling of engine in partial load, and fastly deactivating heating of suction air |
-
2009
- 2009-07-30 DE DE102009028126A patent/DE102009028126B4/en not_active Expired - Fee Related
-
2010
- 2010-07-28 CN CN201010243248.2A patent/CN101988424B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3752132A (en) * | 1971-04-19 | 1973-08-14 | Caterpillar Tractor Co | Dual cooling system for engines |
| US6601545B1 (en) * | 1999-11-11 | 2003-08-05 | Robert Bosch Gmbh | Method and device for transporting heat energy that is produced in a motor vehicle |
| US20060117748A1 (en) * | 2003-04-11 | 2006-06-08 | Steffen Bundschuh | Circuit arrangement which cools charging air and method for the operation of said type of circuit arrangement |
| US20060225417A1 (en) * | 2003-04-30 | 2006-10-12 | Behr Gmbh & Co. Kg | Circuit for cooling charge air, and method for operating such a circuit |
| US20080295811A1 (en) * | 2007-05-31 | 2008-12-04 | Caterpillar Inc. | Engine system having cooled and heated inlet air |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102009028126B4 (en) | 2011-09-22 |
| DE102009028126A1 (en) | 2011-02-17 |
| CN101988424B (en) | 2016-05-25 |
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