CA2908153A1 - Method for combined preheating and cooling of a coolant - Google Patents

Method for combined preheating and cooling of a coolant Download PDF

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Publication number
CA2908153A1
CA2908153A1 CA2908153A CA2908153A CA2908153A1 CA 2908153 A1 CA2908153 A1 CA 2908153A1 CA 2908153 A CA2908153 A CA 2908153A CA 2908153 A CA2908153 A CA 2908153A CA 2908153 A1 CA2908153 A1 CA 2908153A1
Authority
CA
Canada
Prior art keywords
internal combustion
combustion engine
coolant
cooling
heat exchanger
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.)
Abandoned
Application number
CA2908153A
Other languages
French (fr)
Inventor
Corinna Jurzok
Alexander Berg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Deere and Co
Original Assignee
Deere and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Deere and Co filed Critical Deere and Co
Publication of CA2908153A1 publication Critical patent/CA2908153A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (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

The invention concerns 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 air delivery means to generate an air flow through the heat exchanger are provided.

Description

Mk 02908153 2015-10-09 Method for Combined Preheating and Cooling of a Coolant The invention concerns 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 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 ak 02908153 2015-1()-09 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.
The object of the present invention is to improve a cooling system such that a further shortened warm-up phase of the internal combustion engine is achieved.
This object is achieved by 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 so as to generate the air flow in a direction towards the internal combustion 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 according to the invention 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
2 ak 02908153 2015-1()-09 temperature and the engine bay temperature. Since usually 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 the invention firstly 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 according the invention shortens the duration of the warm-up phase since an additional heat input into the coolant circuit takes place during the warm-up phase. It is decisive that this heat input comes 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.
Preferably, 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.
Preferably, the air delivery means is a fan with electric or hydraulic drive. This is simple to install in a cooling system.
3 ak 02908153 2015-1()-09 The present invention is described with reference to the figures below. These show:
Figure 1 an agricultural working vehicle with a cooling system controlled according to the prior art, and Figure 2 an agricultural working vehicle (extract) with a cooling system controlled according to the invention.
Figure 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 comprises 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.
To dissipate the heat developed during operation of the internal combustion engine 20, the cooling system 10 comprises 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
4 ak 02908153 2015-10-09 be arranged between the internal combustion engine 20 and the heat exchanger 32.
In the exemplary embodiment shown and described here, 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 the invention, 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 figure 1, 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.
In figure 2, 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. In this rotation direction, here called the opposite direction, the fan 32 is set according to the invention 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,
5 CA 02908153 2015-1()-09 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 80 C and 100 C or an engine oil temperature between 90 C and 110 C.
To perform the method according to the invention, 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 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. On performance of the method according to the invention, 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
6 which acts as a cooling air flow out of the environment into the engine bay 18.
7 ak 02908153 2015-1()-09 List of Reference Numerals Cooling system 12 Agricultural working vehicle 5 14 Cab 16 Front axle 18 Engine bay Internal combustion engine 22 Rear axle 10 24 Frame 26 Hydraulic pump 28 Heat exchanger Hydraulic motor 32 Fan
8

Claims (3)

CLAIMS:
1. 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 so as 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 the 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.
2. Method for combined preheating and cooling of a coolant according to Claim 1, characterized in that the threshold value is at the level of the operating temperature of the internal combustion engine.
3. Method for combined preheating and cooling of a coolant according to Claim 1 or 2, characterized in that the air delivery means is a fan with electric or hydraulic drive.
CA2908153A 2014-10-13 2015-10-09 Method for combined preheating and cooling of a coolant Abandoned CA2908153A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014220692.8A DE102014220692A1 (en) 2014-10-13 2014-10-13 Method for the combined preheating and cooling of a coolant
DE102014220692.8 2014-10-13

Publications (1)

Publication Number Publication Date
CA2908153A1 true CA2908153A1 (en) 2016-04-13

Family

ID=54260636

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2908153A Abandoned CA2908153A1 (en) 2014-10-13 2015-10-09 Method for combined preheating and cooling of a coolant

Country Status (4)

Country Link
US (1) US20160102597A1 (en)
EP (1) EP3009624A1 (en)
CA (1) CA2908153A1 (en)
DE (1) DE102014220692A1 (en)

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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
GB2555864B (en) * 2016-11-15 2020-01-08 Perkins Engines Co Ltd Control system for thermal management of an engine aftertreatment device
CN110741174B (en) * 2017-06-15 2021-03-05 巴鲁法蒂股份公司 Mixing device for controlling the rotation of a fan for cooling a cooling fluid of a vehicle
JP2019116198A (en) * 2017-12-27 2019-07-18 ヤマハ発動機株式会社 vehicle

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US2734493A (en) * 1956-02-14 Variable and reversible pitch fan for
US2517932A (en) * 1948-06-11 1950-08-08 Evans Prod Co Fluid pressure variable pitch fan control
US3106343A (en) * 1960-06-23 1963-10-08 Joseph R Holland Means for controlling the temperature of an internal combustion engine
IT1208408B (en) * 1987-04-28 1989-06-12 Fiat Auto Spa PROCEDURE AND DEVICE FOR INCREASING THE COOLING OF THE REFRIGERATION FLUID OF AN INTERNAL COMBUSTION ENGINE FOR VEHICLES
US6859671B1 (en) * 1995-05-30 2005-02-22 Roy-G-Biv Corporation Application programs for motion control devices including access limitations
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US8960349B2 (en) * 2013-04-16 2015-02-24 Deere & Company Hydraulic fluid warm-up using hydraulic fan reversal
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Also Published As

Publication number Publication date
DE102014220692A1 (en) 2016-04-14
US20160102597A1 (en) 2016-04-14
EP3009624A1 (en) 2016-04-20

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