US20160102597A1 - Method for combined preheating and cooling of a coolant - Google Patents
Method for combined preheating and cooling of a coolant Download PDFInfo
- Publication number
- US20160102597A1 US20160102597A1 US14/880,343 US201514880343A US2016102597A1 US 20160102597 A1 US20160102597 A1 US 20160102597A1 US 201514880343 A US201514880343 A US 201514880343A US 2016102597 A1 US2016102597 A1 US 2016102597A1
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- Prior art keywords
- internal combustion
- combustion engine
- coolant
- cooling
- temperature
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Classifications
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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
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
- F01P5/04—Pump-driving arrangements
- F01P5/043—Pump reversing arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
- B60K11/04—Arrangement or mounting of radiators, radiator shutters, or radiator blinds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/08—Air inlets for cooling; Shutters or blinds therefor
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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
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/10—Controlling of coolant flow the coolant being cooling-air by throttling amount of air flowing through liquid-to-air heat exchangers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K25/00—Auxiliary drives
- B60K25/02—Auxiliary drives directly from an engine shaft
- B60K2025/026—Auxiliary drives directly from an engine shaft by a hydraulic transmission
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/20—Off-Road Vehicles
- B60Y2200/22—Agricultural vehicles
- B60Y2200/221—Tractors
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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
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
- F01P5/04—Pump-driving arrangements
- F01P2005/046—Pump-driving arrangements with electrical pump drive
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2025/00—Measuring
- F01P2025/08—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2025/00—Measuring
- F01P2025/08—Temperature
- F01P2025/13—Ambient temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2025/00—Measuring
- F01P2025/08—Temperature
- F01P2025/32—Engine outcoming fluid temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2025/00—Measuring
- F01P2025/08—Temperature
- F01P2025/40—Oil temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2037/00—Controlling
- F01P2037/02—Controlling starting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
- F01P7/044—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio using hydraulic drives
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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
- F01P7/00—Controlling of coolant flow
- F01P7/02—Controlling of coolant flow the coolant being cooling-air
- F01P7/04—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio
- F01P7/048—Controlling of coolant flow the coolant being cooling-air by varying pump speed, e.g. by changing pump-drive gear ratio using electrical drives
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
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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
Definitions
- the present disclosure relates to a method for cooling a coolant for waste heat cooling of an internal combustion engine in an agricultural working vehicle, wherein a heat exchanger through which coolant flows and an air delivery means to generate an air flow through the heat exchanger are provided.
- Fluid-based cooling systems for waste heat cooling of an internal combustion engine are normally designed such that the cooling circuit is divided via a coolant thermostat into a secondary cooling circuit, also called the bypass circuit, and a main cooling circuit.
- the coolant thermostat is in a position in which the flow of coolant in the main cooling circuit through the heat exchanger, also called the engine radiator, is blocked and a coolant flow through a coolant line bypassing the heat exchanger is opened.
- the associated reduction in circulated coolant leads to a faster passage through the warm-up phase, and the operating temperature of the internal combustion engine is reached earlier.
- the bypass coolant line is closed to the extent that the flow through the heat exchanger is opened. Also, coolant not yet heated is thus included in the coolant circuit and must be heated to a higher temperature. This leads to a brief fall in the temperature of the coolant circuit. Furthermore, the warm-up phase always lasts for a specific duration, whereas the temperature in the engine bay in which the internal combustion engine is placed exceeds the ambient temperature relatively soon after the cold start.
- This disclosure provides a cooling system such that a further shortened warm-up phase of the internal combustion engine may be achieved.
- a method for combined preheating and cooling of a coolant for waste heat cooling of an internal combustion engine in an agricultural working vehicle, wherein a heat exchanger through which coolant flows and air delivery means to generate an air flow through the heat exchanger are provided, and the air delivery means is configured to generate the air flow in a direction towards the internal combustion engine or in a direction away from the internal combustion engine as required, wherein the air delivery means is set to generate an air flow in the direction away from the internal combustion engine as long as a temperature value, which is characteristic of a temperature state of the internal combustion engine, lies below a threshold value, and the air delivery means is set reversed when the status value is exceeded.
- the method is advantageously able to exploit the temperature difference which can occur after a cold start of the internal combustion engine, during the warm-up phase between the ambient temperature and the engine bay temperature.
- the coolant in the heat exchanger is at the level of the ambient temperature.
- a temperature difference exists between the coolant in the heat exchanger and the engine bay.
- the method according to one example achieves that, on reaching the switching temperature of the coolant thermostat, i.e. on opening of the flow through the heat exchanger or the main cooling circuit, there is no or at least only a reduced brief temperature fall in the coolant circuit.
- the method shortens the duration of the warm-up phase since an additional heat input into the coolant circuit takes place during the warm-up phase.
- This heat input can come from a heat source, for example the exhaust manifold, the emitted heat of which is not normally used for any other purpose. To this extent, the efficiency of the internal combustion engine increases during the warm-up phase.
- the threshold value is at the level of the operating temperature of the internal combustion engine. This ensures that as far as possible, the entire warm-up phase is used to guide air, which has already been heated in the engine bay, through the heat exchanger.
- the air delivery means is a fan with electric or hydraulic drive.
- FIG. 1 is an agricultural working vehicle with a cooling system controlled according to one embodiment
- FIG. 2 is an agricultural working vehicle with a cooling system controlled according to another embodiment.
- FIG. 1 shows an agricultural working vehicle 12 , depicted purely diagrammatically in parts, with a cooling system 10 arranged in a frontal area, for waste heat cooling of an internal combustion engine 20 placed in the engine bay 18 .
- the agricultural working vehicle 12 furthermore may have a cab 14 , a front axle 16 and a rear axle 22 driven by the internal combustion engine 20 .
- a frame 24 serves a carrier element for the individual components of the working vehicle 12 .
- the cooling system 10 may have a heat exchanger 28 through which coolant flows and over which air flows, and the air delivery means 32 generating the air flow, in the form of a fan. Both the heat exchanger 28 and the fan 32 may be arranged at the front of the internal combustion engine 20 in the travel direction of the working machine 12 . The fan 32 may also be arranged between the internal combustion engine 20 and the heat exchanger 32 .
- the fan 32 may be driven about a rotation axis D by a hydraulic motor 30 , which in turn may be supplied by a hydraulic pump 26 driven by the internal combustion engine 20 . According to this embodiment, it is proposed that the fan 32 can be driven by the hydraulic motor 30 both in the one rotation direction and in the opposite rotation direction as required. In another embodiment, the fan 32 may similarly be driven by an electric motor.
- the air flow generated by the fan 32 is depicted by arrows which represent a flow direction of the air flow from the environment through the heat exchanger 28 and into the engine bay 18 .
- the fan 32 is thus set and driven in the rotation direction in which, at least when the internal combustion engine 20 is at operating temperature, an air flow is generated which acts as a cooling air flow from the environment into the engine bay 18 .
- the fan 32 is set and driven in the opposite rotation direction, so that an air flow is generated out of the engine bay 18 , through the heat exchanger 28 and into the environment.
- this rotation direction here called the opposite direction
- the fan 32 is set to rotate in the opposite direction immediately after the cold start and during the subsequent warm-up phase of the internal combustion engine 20 .
- the term “cold start” in the context of this application means a state in which a temperature level of the internal combustion engine 20 , which is represented for example by the coolant temperature or the engine oil temperature, lies significantly below the operating temperature of the internal combustion engine 20 , wherein the operating temperature is usually characterized by a coolant temperature between about 80° C. and 100° C. or an engine oil temperature between about 90° C. and 110° C.
- a coolant temperature sensor, an engine oil temperature sensor and an external temperature sensor present on the agricultural working vehicle 12 detect whether a cold start state exists. If a cold start state exists, after the cold start of the internal combustion engine 20 , the fan 32 is set and driven in the opposite direction of rotation so that an air flow is generated from the engine bay 18 , through the heat exchanger 28 and into the environment. Since the exhaust manifold quickly becomes hot after a cold start of the internal combustion engine 20 , this heats the engine bay 18 rapidly relative to the ambient temperature. This increased temperature is used to heat the coolant present in the heat exchanger 28 before the coolant thermostat has reached its switching temperature and opened the flow through the main cooling circuit. When the internal combustion engine 20 has reached its operating temperature, the rotation direction of the fan is reversed, and it is set and driven in the rotation direction in which an air flow is generated which acts as a cooling air flow out of the environment into the engine bay 18 .
- variable pitch blade fan with reversing capability may be used instead of a fixed blade fan.
- a variable pitch blade fan With a variable pitch blade fan, the direction of air flow can be reversed without reversing the direction of rotation of the motor.
Abstract
A method for cooling a coolant for waste heat cooling of an internal combustion engine is described for an agricultural working vehicle. The method includes providing a heat exchanger through which coolant flows and an air delivery means generates an air flow through the heat exchanger.
Description
- This application claims the benefit of German Application Ser. No. 102014220692.8, filed Oct. 13, 2014, the disclosure of which is hereby expressly incorporated by reference in its entirety.
- The present disclosure relates to a method for cooling a coolant for waste heat cooling of an internal combustion engine in an agricultural working vehicle, wherein a heat exchanger through which coolant flows and an air delivery means to generate an air flow through the heat exchanger are provided.
- Fluid-based cooling systems for waste heat cooling of an internal combustion engine are normally designed such that the cooling circuit is divided via a coolant thermostat into a secondary cooling circuit, also called the bypass circuit, and a main cooling circuit. In principle, during the warm-up phase, the coolant thermostat is in a position in which the flow of coolant in the main cooling circuit through the heat exchanger, also called the engine radiator, is blocked and a coolant flow through a coolant line bypassing the heat exchanger is opened. The associated reduction in circulated coolant leads to a faster passage through the warm-up phase, and the operating temperature of the internal combustion engine is reached earlier.
- In the region of the so-called “switching temperature” of the coolant thermostat, the bypass coolant line is closed to the extent that the flow through the heat exchanger is opened. Also, coolant not yet heated is thus included in the coolant circuit and must be heated to a higher temperature. This leads to a brief fall in the temperature of the coolant circuit. Furthermore, the warm-up phase always lasts for a specific duration, whereas the temperature in the engine bay in which the internal combustion engine is placed exceeds the ambient temperature relatively soon after the cold start.
- This disclosure provides a cooling system such that a further shortened warm-up phase of the internal combustion engine may be achieved.
- In one embodiment, a method is provided for combined preheating and cooling of a coolant for waste heat cooling of an internal combustion engine in an agricultural working vehicle, wherein a heat exchanger through which coolant flows and air delivery means to generate an air flow through the heat exchanger are provided, and the air delivery means is configured to generate the air flow in a direction towards the internal combustion engine or in a direction away from the internal combustion engine as required, wherein the air delivery means is set to generate an air flow in the direction away from the internal combustion engine as long as a temperature value, which is characteristic of a temperature state of the internal combustion engine, lies below a threshold value, and the air delivery means is set reversed when the status value is exceeded.
- In one non-limiting example, the method is advantageously able to exploit the temperature difference which can occur after a cold start of the internal combustion engine, during the warm-up phase between the ambient temperature and the engine bay temperature. Often, at the moment of cold start, the coolant in the heat exchanger is at the level of the ambient temperature. During the warm-up phase a temperature difference exists between the coolant in the heat exchanger and the engine bay. The method according to one example achieves that, on reaching the switching temperature of the coolant thermostat, i.e. on opening of the flow through the heat exchanger or the main cooling circuit, there is no or at least only a reduced brief temperature fall in the coolant circuit. Furthermore, the method shortens the duration of the warm-up phase since an additional heat input into the coolant circuit takes place during the warm-up phase. This heat input can come from a heat source, for example the exhaust manifold, the emitted heat of which is not normally used for any other purpose. To this extent, the efficiency of the internal combustion engine increases during the warm-up phase.
- In one non-exclusive example, the threshold value is at the level of the operating temperature of the internal combustion engine. This ensures that as far as possible, the entire warm-up phase is used to guide air, which has already been heated in the engine bay, through the heat exchanger. In another non-exclusive example, the air delivery means is a fan with electric or hydraulic drive.
- The above-mentioned aspects of the present disclosure and the manner of obtaining them will become more apparent and the disclosure itself will be better understood by reference to the following description of the embodiments of the disclosure, taken in conjunction with the accompanying drawings, wherein:
-
FIG. 1 is an agricultural working vehicle with a cooling system controlled according to one embodiment; and -
FIG. 2 is an agricultural working vehicle with a cooling system controlled according to another embodiment. - Corresponding reference numerals are used to indicate corresponding parts throughout the several views.
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FIG. 1 shows an agricultural workingvehicle 12, depicted purely diagrammatically in parts, with acooling system 10 arranged in a frontal area, for waste heat cooling of aninternal combustion engine 20 placed in theengine bay 18. The agricultural workingvehicle 12 furthermore may have acab 14, afront axle 16 and arear axle 22 driven by theinternal combustion engine 20. Aframe 24 serves a carrier element for the individual components of theworking vehicle 12. - To dissipate the heat developed during operation of the
internal combustion engine 20, thecooling system 10 may have aheat exchanger 28 through which coolant flows and over which air flows, and the air delivery means 32 generating the air flow, in the form of a fan. Both theheat exchanger 28 and thefan 32 may be arranged at the front of theinternal combustion engine 20 in the travel direction of theworking machine 12. Thefan 32 may also be arranged between theinternal combustion engine 20 and theheat exchanger 32. - In the illustrated embodiment shown in
FIG. 1 and described herein, thefan 32 may be driven about a rotation axis D by ahydraulic motor 30, which in turn may be supplied by ahydraulic pump 26 driven by theinternal combustion engine 20. According to this embodiment, it is proposed that thefan 32 can be driven by thehydraulic motor 30 both in the one rotation direction and in the opposite rotation direction as required. In another embodiment, thefan 32 may similarly be driven by an electric motor. - In
FIG. 1 , the air flow generated by thefan 32 is depicted by arrows which represent a flow direction of the air flow from the environment through theheat exchanger 28 and into theengine bay 18. Thefan 32 is thus set and driven in the rotation direction in which, at least when theinternal combustion engine 20 is at operating temperature, an air flow is generated which acts as a cooling air flow from the environment into theengine bay 18. - In
FIG. 2 , thefan 32 is set and driven in the opposite rotation direction, so that an air flow is generated out of theengine bay 18, through theheat exchanger 28 and into the environment. In this rotation direction, here called the opposite direction, thefan 32 is set to rotate in the opposite direction immediately after the cold start and during the subsequent warm-up phase of theinternal combustion engine 20. The term “cold start” in the context of this application means a state in which a temperature level of theinternal combustion engine 20, which is represented for example by the coolant temperature or the engine oil temperature, lies significantly below the operating temperature of theinternal combustion engine 20, wherein the operating temperature is usually characterized by a coolant temperature between about 80° C. and 100° C. or an engine oil temperature between about 90° C. and 110° C. - To perform the method according to one nonexclusive aspect of this disclosure, first a coolant temperature sensor, an engine oil temperature sensor and an external temperature sensor present on the agricultural working
vehicle 12 detect whether a cold start state exists. If a cold start state exists, after the cold start of theinternal combustion engine 20, thefan 32 is set and driven in the opposite direction of rotation so that an air flow is generated from theengine bay 18, through theheat exchanger 28 and into the environment. Since the exhaust manifold quickly becomes hot after a cold start of theinternal combustion engine 20, this heats the engine bay 18 rapidly relative to the ambient temperature. This increased temperature is used to heat the coolant present in theheat exchanger 28 before the coolant thermostat has reached its switching temperature and opened the flow through the main cooling circuit. When theinternal combustion engine 20 has reached its operating temperature, the rotation direction of the fan is reversed, and it is set and driven in the rotation direction in which an air flow is generated which acts as a cooling air flow out of the environment into theengine bay 18. - In other embodiments, a variable pitch blade fan with reversing capability may be used instead of a fixed blade fan. With a variable pitch blade fan, the direction of air flow can be reversed without reversing the direction of rotation of the motor.
- While embodiments incorporating the principles of the present disclosure have been described hereinabove, the present disclosure is not limited to the described embodiments. Instead, this application is intended to cover any variations, uses, or adaptations of the disclosure using its general principles. Further, this application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this disclosure pertains and which fall within the limits of the appended claims.
Claims (5)
1. A method for combined preheating and cooling of a coolant for waste heat cooling of an internal combustion engine in an agricultural working vehicle, the method comprising:
providing a heat exchanger through which coolant flows and an air delivery means to generate an air flow through the heat exchanger;
generating air flow via the air delivery means in a direction towards or away from the internal combustion engine as required;
detecting a temperature of the internal combustion engine;
producing air flow in the direction away from the internal combustion engine when a temperature value of the internal combustion engine is below a threshold value; and
reversing the air delivery means when the temperature value exceeds the threshold value.
2. The method of claim 1 , wherein the threshold value is established at a level of an operating temperature of the internal combustion engine.
3. The method of claim 1 , wherein the air delivery means comprises a fan with an electric or hydraulic drive.
4. The method of claim 3 , wherein the fan has fixed blades.
5. The method of claim 3 , wherein the fan has variable pitch blades.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102014220692.8 | 2014-10-13 | ||
DE102014220692.8A DE102014220692A1 (en) | 2014-10-13 | 2014-10-13 | Method for the combined preheating and cooling of a coolant |
Publications (1)
Publication Number | Publication Date |
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US20160102597A1 true US20160102597A1 (en) | 2016-04-14 |
Family
ID=54260636
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US14/880,343 Abandoned US20160102597A1 (en) | 2014-10-13 | 2015-10-12 | Method for combined preheating and cooling of a coolant |
Country Status (4)
Country | Link |
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US (1) | US20160102597A1 (en) |
EP (1) | EP3009624A1 (en) |
CA (1) | CA2908153A1 (en) |
DE (1) | DE102014220692A1 (en) |
Cited By (2)
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GB2555864A (en) * | 2016-11-15 | 2018-05-16 | Perkins Engines Co Ltd | Control system for thermal management of an engine aftertreatment device |
US10518630B2 (en) * | 2017-12-27 | 2019-12-31 | Yamaha Hatsudoki Kabushiki Kaisha | Vehicle |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE102015225426A1 (en) * | 2015-12-16 | 2017-06-22 | Robert Bosch Gmbh | Fan system for a motor vehicle |
GB201615151D0 (en) * | 2016-09-07 | 2016-10-19 | Agco Int Gmbh | Vehicle tank |
EP3638916B1 (en) * | 2017-06-15 | 2021-04-28 | Baruffaldi S.p.A. | Hybrid apparatus for controlling the rotation of a fan for cooling the cooling fluid of a vehicle |
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2014
- 2014-10-13 DE DE102014220692.8A patent/DE102014220692A1/en active Pending
-
2015
- 2015-10-01 EP EP15187895.6A patent/EP3009624A1/en not_active Withdrawn
- 2015-10-09 CA CA2908153A patent/CA2908153A1/en not_active Abandoned
- 2015-10-12 US US14/880,343 patent/US20160102597A1/en not_active Abandoned
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2555864A (en) * | 2016-11-15 | 2018-05-16 | Perkins Engines Co Ltd | Control system for thermal management of an engine aftertreatment device |
US10415454B2 (en) | 2016-11-15 | 2019-09-17 | Perkins Engines Company Limited | Control system for thermal management of an engine aftertreatment device |
GB2555864B (en) * | 2016-11-15 | 2020-01-08 | Perkins Engines Co Ltd | Control system for thermal management of an engine aftertreatment device |
US10518630B2 (en) * | 2017-12-27 | 2019-12-31 | Yamaha Hatsudoki Kabushiki Kaisha | Vehicle |
Also Published As
Publication number | Publication date |
---|---|
EP3009624A1 (en) | 2016-04-20 |
CA2908153A1 (en) | 2016-04-13 |
DE102014220692A1 (en) | 2016-04-14 |
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Legal Events
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Owner name: DEERE & COMPANY, ILLINOIS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:JURZOK, CORINNA;BERG, ALEXANDER;REEL/FRAME:036770/0799 Effective date: 20151009 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |