KR20150141446A - Cooling fan rpm control device of construction equipment - Google Patents

Cooling fan rpm control device of construction equipment Download PDF

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Publication number
KR20150141446A
KR20150141446A KR1020140070175A KR20140070175A KR20150141446A KR 20150141446 A KR20150141446 A KR 20150141446A KR 1020140070175 A KR1020140070175 A KR 1020140070175A KR 20140070175 A KR20140070175 A KR 20140070175A KR 20150141446 A KR20150141446 A KR 20150141446A
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KR
South Korea
Prior art keywords
cooling fan
control unit
electronic control
information
revolutions
Prior art date
Application number
KR1020140070175A
Other languages
Korean (ko)
Inventor
엄덕용
Original Assignee
볼보 컨스트럭션 이큅먼트 에이비
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.)
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Application filed by 볼보 컨스트럭션 이큅먼트 에이비 filed Critical 볼보 컨스트럭션 이큅먼트 에이비
Priority to KR1020140070175A priority Critical patent/KR20150141446A/en
Publication of KR20150141446A publication Critical patent/KR20150141446A/en

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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/0858—Arrangement of component parts installed on superstructures not otherwise provided for, e.g. electric components, fenders, air-conditioning units
    • E02F9/0866—Engine compartment, e.g. heat exchangers, exhaust filters, cooling devices, silencers, mufflers, position of hydraulic pumps in the engine compartment
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/40—Special vehicles
    • B60Y2200/41—Construction vehicles, e.g. graders, excavators
    • B60Y2200/412—Excavators
    • 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
    • F01P2025/34—Heat exchanger incoming 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
    • F01P2025/60—Operating parameters
    • F01P2025/64—Number of revolutions

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling fan rotation speed control device for a construction equipment, and more particularly, to a cooling fan rotation speed control device for a construction equipment capable of controlling the rotation speed of a cooling fan according to an external environment change.
To this end, the present invention provides a refrigerator comprising: a first electronic controller for controlling the number of revolutions of the cooling fan through first information on the number of revolutions of the cooling fan based on input engine speed and cooling water temperature; And a second electronic control unit electrically connected to the first electronic control unit and transmitting second information on the number of revolutions of the cooling fan set by the driver to the first electronic control unit, Controls the rotation speed of the cooling fan based on the first information and controls the rotation speed of the cooling fan based on the second information when the second information is transmitted from the second electronic control unit A cooling fan rotation speed control device for a construction equipment is provided.

Description

TECHNICAL FIELD [0001] The present invention relates to a COOLING FAN RPM CONTROL DEVICE OF CONSTRUCTION EQUIPMENT,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling fan rotation speed control device for a construction equipment, and more particularly, to a cooling fan rotation speed control device for a construction equipment capable of controlling the rotation speed of a cooling fan according to an external environment change.

The engine room of a construction equipment such as an excavator is provided with a cooling device for cooling the engine to prevent the engine from overheating. For example, such a cooling device may include a radiator, a cooling water circulation pump, and a cooling fan. In this case, the cooling water heated by the engine is introduced into the radiator by the cooling water circulation pump, circulated, and is heat-dissipated through heat exchange with the outside air. At this time, the cooling fan installed between the engine and the radiator increases the radiating effect of the radiator by passing air through the radiator through the rotation. That is, the cooling water circulating the radiator is rapidly cooled by the air generated by the cooling fan and passing through the radiator.

Here, the number of revolutions of the cooling fan, which generates air and passes through the radiator, is increased or decreased in proportion to the maximum engine speed according to each step of the rotary switch for adjusting the engine speed, for example, The temperature of the cooling water circulated to the radiator is added as a variable for controlling the number of revolutions of the cooling fan, and the final number of revolutions of the cooling fan is calculated and applied. For example, when the work load increases, the load of the engine also increases, so that the temperature of the cooling water becomes higher, and accordingly, the speed of the cooling fan also increases. At this time, if the working load increases and the temperature of the cooling water rises above a certain value, the speed of the cooling fan is maximized to prevent the engine from overheating, thereby lowering the temperature of the cooling water. That is, the number of revolutions of the cooling fan is controlled by two variables, the engine speed and the cooling water temperature.

However, conventionally, the number of rotations of the cooling fan is controlled on the assumption that the external environment is the worst. Accordingly, in the winter season when the external temperature is low, only the number of revolutions of the engine serves as a variable for controlling the number of revolutions of the cooling fan, so there is a possibility of supercooling of the cooling system, the rotation speed of the cooling fan becomes higher than necessary, Which leads to an increase in the overall noise level of the construction equipment and an increase in the engine load.

Korean Patent Publication No. 10-1998-0001040 (Mar. 30, 1998)

SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus for controlling the rotation speed of a cooling fan of a construction equipment capable of adjusting the rotation speed of a cooling fan according to changes in external environment .

To this end, the present invention provides a refrigerator comprising: a first electronic controller for controlling the number of revolutions of the cooling fan through first information on the number of revolutions of the cooling fan based on input engine speed and cooling water temperature; And a second electronic control unit electrically connected to the first electronic control unit and transmitting second information on the number of revolutions of the cooling fan set by the driver to the first electronic control unit, Controls the rotation speed of the cooling fan based on the first information and controls the rotation speed of the cooling fan based on the second information when the second information is transmitted from the second electronic control unit A cooling fan rotation speed control device for a construction equipment is provided.

Here, the first information may include a predetermined number of revolutions of the cooling fan according to the engine speed.

The first information may include a predetermined number of revolutions of the cooling fan according to the cooling water temperature.

And a cooling fan speed adjusting unit electrically connected between the first electronic control unit and the cooling fan to receive the first information or the second information from the first electronic control unit and adjust the rotational speed of the cooling fan .

In addition, the second electronic control unit may include a plurality of setting modes for transmitting the second information to the first electronic control unit.

At this time, the plurality of setting modes may be classified based on the external temperature.

According to the present invention, by controlling the number of revolutions of the cooling fan based on the information on the number of revolutions of the cooling fan set by the driver in addition to the information on the number of revolutions of the cooling fan according to the engine revolution number and the cooling water temperature, The number of revolutions of the cooling fan can be appropriately adjusted. Thus, the engine load can be reduced, the fuel consumption can be improved, and the noise reduction effect can be realized. Thus, the construction equipment can be operated in an optimal state according to the working environment and the work type, , So that the convenience of the driver can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a cooling fan rotation speed control apparatus for a construction equipment according to an embodiment of the present invention; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a cooling fan rotation speed control apparatus for a construction equipment according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

As shown in FIG. 1, the cooling fan rotation speed control apparatus 100 according to the embodiment of the present invention is installed in an engine room of a construction equipment such as an excavator. The engine cooling system includes an engine and a radiator, (Rpm) of the cooling fan 10 for cooling the cooling water circulating the radiator, that is, the rotation speed of the cooling fan 10. [ In the embodiment of the present invention, the apparatus 100 for controlling the cooling fan rotation speed of the construction equipment includes a first electronic control unit 110 and a second electronic control unit 120.

The first electronic control unit 110 is a main controller for controlling various operations of the construction equipment, and may be provided as a vehicle electronic control unit (VECU). The first electronic control unit 110 is driven by the on / off switch 40 connected thereto. In the embodiment of the present invention, the first electronic control unit 110 controls various electric and electronic devices mounted on the construction equipment, and in particular, controls the rotation speed of the cooling fan 10 that cools the cooling water. Through the control of the rotation speed of the cooling fan 10 of the first electronic control unit 110, the cooling water is maintained at a proper temperature during operation of the construction equipment, thereby preventing the engine from overheating.

The first electronic control unit 110 controls the number of revolutions of the cooling fan 10 based on information on the number of revolutions of the cooling fan 10 based on the input engine speed and the cooling water temperature. As shown in the figure, the engine speed control means 20 is electrically connected to the first electronic control unit 110. The engine speed control means 20 transmits a signal indicative of the engine speed to the first electronic control unit 110. When the signal for the engine speed is received from the engine speed control means 20, the first electronic control unit 110 outputs the rotation speed of the cooling fan 10 previously set according to the engine speed , And controls the number of revolutions of the cooling fan (10). In the embodiment of the present invention, the engine speed regulation means 20 may be provided as a rotary switch capable of adjusting the engine speed in stages. At this time, as shown in the figure, a cooling fan clutch controller 130 may be installed between the first electronic control unit 110 and the cooling fan 10. Accordingly, when a signal for the engine speed from the engine speed regulation means 20 is transmitted to the first electronic control unit 110, the cooling fan (not shown) that is preset according to the engine speed from the first electronic control unit 110 And the cooling fan speed controller 130 controls the cooling fan speed controller 130 based on the rotation speed of the cooling fan 10 output from the first electronic controller 110 and transmitted to the cooling fan speed controller 130, The speed of the fan 10 is adjusted.

In addition, the first electronic control unit 110 is electrically connected to the cooling water temperature detecting means 30. [ The cooling water temperature detecting means 30 transmits a signal about the temperature of the cooling water detected by the first electronic control unit 110. When receiving the cooling water temperature detected by the cooling water temperature detecting means 30, the first electronic control unit 110 outputs the rotation number of the cooling fan 10 preset according to the cooling water temperature, 10 is controlled. For example, the first electronic control unit 110 substitutes the detected cooling water temperature in the cooling water temperature table in which the number of revolutions of the cooling fan 10 is set for each temperature, and determines the number of revolutions of the cooling fan 10 So that the number of revolutions of the cooling fan 10 is controlled. In an embodiment of the present invention, such cooling water temperature detecting means 30 may be provided with a temperature sensor. The rotation speed of the cooling fan 10 output from the first electronic control unit 110 is transmitted to the cooling fan speed control unit 130 and the rotation speed of the cooling fan 10 is controlled by the cooling fan speed control unit 130, Lt; / RTI >

As described above, the first electronic control unit 110 stores information about the rotation speed of the cooling fan 10, which is previously set according to the rotation speed of the cooling fan 10 and the cooling water temperature, The number of revolutions of the cooling fan 10 is controlled. When the temperature of the cooling water detected by the cooling water temperature detecting means 30 is lower than or equal to the proper level, the first electronic control unit 110 controls the cooling fan 10 according to the engine speed transmitted from the engine speed adjusting means 20, The number of revolutions of the cooling fan 10 is controlled through the number of revolutions of the cooling fan 10. On the other hand, when the temperature of the cooling water detected by the cooling water temperature detecting means 30 exceeds the proper level, the first electronic control unit 110 controls the rotation of the cooling fan 10 set in advance according to the cooling water temperature And controls the number of revolutions of the cooling fan 10 through the water. That is, the first electronic control unit 110 controls the number of revolutions of the cooling fan 10 based on two variables, the engine speed and the cooling water temperature, depending on the situation.

Here, the first electronic control unit 110 systematically controls the number of rotations of the cooling fan 10 based on the above two variables, and also controls other information transmitted from the second electronic control unit 120, that is, The number of rotations of the cooling fan 10 is controlled by information other than the number of rotations and the temperature of the cooling water, which will be described in more detail below.

The second electronic control unit 120 is electrically connected to the first electronic control unit 110. The second electronic control unit 120 is connected to the engine rotation speed control unit 20 and the first electronic control unit 110 to the first electronic control unit 110, The first electronic control unit 110 transmits information different from the cooling water temperature to the first electronic control unit 110 to control the rotation speed of the cooling fan 10 through information different from the engine speed and the cooling water temperature . That is, in the embodiment of the present invention, the second electronic control unit 120 transmits to the first electronic control unit 110 information about the rotation speed of the cooling fan 10 set by the driver. When the information about the number of revolutions of the cooling fan 10 set by the driver from the second electronic control unit 120 is transmitted to the first electronic control unit 110, The rotation speed of the cooling fan 10 is output to the cooling fan speed controller 130 based on the engine engine speed and the cooling water temperature to control the rotation speed of the cooling fan 10, The rotation speed of the cooling fan 10 is output to the cooling fan speed control unit 130 based on the information set by the driver to be transmitted and the rotation speed of the cooling fan 10 is controlled.

In an embodiment of the present invention, the second electronic control unit 120 may be provided as an IECU operable by a driver. The second electronic control unit 120 may include a plurality of setting modes (user setting modes) so that the driver can set the rotation speed of the different cooling fans 10 according to the external environment change. At this time, the plurality of setting modes may be classified into a winter mode, a summer mode, and a spring / autumn mode based on an external temperature, for example. Accordingly, when the driver selects the winter mode, the information on the number of revolutions of the cooling fan 10 set for the winter temperature is transmitted to the first electronic control unit 110, The number of revolutions of the cooling fan 10 is controlled based on the information. In the same manner as in the winter mode, information on the number of revolutions of the cooling fan 10 is transmitted to the first electronic control unit 110 when the driver selects the remainder, summer mode, and spring / autumn mode.

As described above, the rotation speed of the cooling fan 10 during normal operation of the construction equipment is determined based on the engine rotation speed transmitted from the engine rotation speed control means 20 and the cooling water temperature transmitted from the cooling water temperature detection means 30 And is systematically controlled by the first electronic control unit 110. However, the number of rotations of the cooling fan 10 according to the number of revolutions of the cooling fan 10 and the number of revolutions of the cooling fan 10 stored in the first electronic control unit 110 is set on the assumption that the external environment is the worst. For example, in the winter season, the temperature of the cooling water is kept low by the external temperature, so that only the number of revolutions of the engine serves as a variable for controlling the number of revolutions of the cooling fan 10. In this case, 10 is higher than necessary, there is a possibility of supercooling of the cooling system. Thus, the second electronic control unit 120 allows the driver to set the number of revolutions of the cooling fan 10 in an experiential manner. For example, when the driver selects the winter mode, the minimum number of revolutions of the cooling fan 10 is transmitted to the first electronic control unit 110. When the driver selects the summer mode, the maximum number of revolutions of the cooling fan 10 1 electronic control unit 110 and it is determined that the rotation speed of the cooling fan 10 is too fast or too slow as compared with the external environment. When the driver selects the spring / fall mode, the cooling fan 10, The number of rotations of the cooling fan 10 is transmitted to the first electronic control unit 110 to control the number of rotations of the cooling fan 10 according to the situation. That is, the second electronic control unit 120 according to the embodiment of the present invention controls the cooling fan 10 based on the rotation number of the cooling fan 10 according to the rotation number of the cooling fan 10 and the cooling water temperature, The first electronic control unit 110 is a random control unit that systematically controls the number of revolutions of the first electronic control unit 110.

As described above, the cooling fan rotation speed control apparatus 100 according to the embodiment of the present invention includes information on the rotation speed of the cooling fan 10 in accordance with the engine rotation speed and the cooling water temperature, And controls the number of revolutions of the cooling fan 10 based on information on the number of revolutions of the fan 10. [ Accordingly, the cooling fan rotation speed control apparatus 100 according to the embodiment of the present invention can adjust the rotation speed of the cooling fan 10 to an optimal condition according to the external environment or changes in circumstances, 10 can be unnecessarily increased and the engine load can be reduced, the fuel consumption can be improved, and the noise generated from the cooling fan 10 rotating at high speed can also be reduced. That is, the cooling fan rotation speed control device 100 according to the embodiment of the present invention can operate the construction equipment in an optimal state according to the work environment and the work type, and can provide convenience to the driver.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. This is possible.

Therefore, the scope of the present invention should not be limited by the described embodiments, but should be determined by the scope of the appended claims as well as the appended claims.

100: cooling fan rotation speed control device 110: first electronic control unit
120: second electronic control unit 130: cooling fan speed control unit
10: cooling fan 20: engine speed control means
30: cooling water temperature detecting means 40: on / off switch

Claims (6)

A first electronic controller for controlling the number of revolutions of the cooling fan through first information on the number of revolutions of the cooling fan based on input engine speed and cooling water temperature; And
A second electronic control unit electrically connected to the first electronic control unit and transmitting second information on the number of revolutions of the cooling fan set by the driver to the first electronic control unit;
Lt; / RTI >
The first electronic control unit controls the number of revolutions of the cooling fan based on the first information,
And controls the rotation speed of the cooling fan based on the second information when the second information is transmitted from the second electronic control unit.
The method according to claim 1,
Wherein the first information includes a predetermined number of revolutions of the cooling fan according to the number of revolutions of the engine.
The method according to claim 1,
Wherein the first information includes a rotation number of the cooling fan previously set according to the cooling water temperature.
The method according to claim 1,
And a cooling fan electrically connected between the first electronic control unit and the cooling fan,
Further comprising a cooling fan speed controller for receiving the first information or the second information from the first electronic controller to adjust a rotation speed of the cooling fan.
The method according to claim 1,
Wherein the second electronic control unit has a plurality of setting modes for transmitting the second information to the first electronic control unit.
6. The method of claim 5,
Wherein the plurality of setting modes are classified based on an external temperature.
KR1020140070175A 2014-06-10 2014-06-10 Cooling fan rpm control device of construction equipment KR20150141446A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140070175A KR20150141446A (en) 2014-06-10 2014-06-10 Cooling fan rpm control device of construction equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140070175A KR20150141446A (en) 2014-06-10 2014-06-10 Cooling fan rpm control device of construction equipment

Publications (1)

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KR20150141446A true KR20150141446A (en) 2015-12-18

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KR1020140070175A KR20150141446A (en) 2014-06-10 2014-06-10 Cooling fan rpm control device of construction equipment

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20240027988A (en) 2022-08-24 2024-03-05 에이치디현대건설기계 주식회사 Apparatus and method for controlling cooling fan of construction equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20240027988A (en) 2022-08-24 2024-03-05 에이치디현대건설기계 주식회사 Apparatus and method for controlling cooling fan of construction equipment

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