KR20170070682A - Fluid fan clutch and control method thereof - Google Patents

Fluid fan clutch and control method thereof Download PDF

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Publication number
KR20170070682A
KR20170070682A KR1020150178496A KR20150178496A KR20170070682A KR 20170070682 A KR20170070682 A KR 20170070682A KR 1020150178496 A KR1020150178496 A KR 1020150178496A KR 20150178496 A KR20150178496 A KR 20150178496A KR 20170070682 A KR20170070682 A KR 20170070682A
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South Korea
Prior art keywords
space
valve
shut
rotor
pressure
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KR1020150178496A
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Korean (ko)
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KR101856129B1 (en
Inventor
유병식
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(주)테크놀로지선진
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D35/00—Fluid clutches in which the clutching is predominantly obtained by fluid adhesion
    • F16D35/02—Fluid clutches in which the clutching is predominantly obtained by fluid adhesion with rotary working chambers and rotary reservoirs, e.g. in one coupling part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D35/00—Fluid clutches in which the clutching is predominantly obtained by fluid adhesion
    • F16D35/02—Fluid clutches in which the clutching is predominantly obtained by fluid adhesion with rotary working chambers and rotary reservoirs, e.g. in one coupling part
    • F16D35/021—Fluid clutches in which the clutching is predominantly obtained by fluid adhesion with rotary working chambers and rotary reservoirs, e.g. in one coupling part actuated by valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/02—Fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/02—Fluid-pressure mechanisms

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

According to the present invention, there is provided a fan apparatus comprising: a fan body having an interior divided into a first space and a second space; A rotor rotatably installed in the second space; A rotating shaft fixed to the rotor and receiving power from the outside to rotate the rotor; And a shut-off valve provided in the rotor to selectively block the first space and the second space, wherein when the shut-off valve is opened and the oil in the first space is moved to the second space, And the fan body rotates when the rotor rotates due to viscous resistance of oil in the space, and a control method of the fluid fan clutch.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a fluid fan clutch,

The present invention relates to a fluid fan clutch installed in a vehicle and a control method thereof.

Generally, a cooling fan for a vehicle is installed in an engine room of a vehicle, and cooling water circulating in the radiator and the engine is cooled to improve the cooling efficiency of the cooling water.

And this vehicle cooling fan is operated by the fluid fan clutch connected to the engine.

A conventional fluid fan clutch includes a rotating shaft that is powered by an engine, a fan body rotatably coupled to the rotating shaft and having an inner space divided into a first space and a second space, A rotor fixed to the rotating shaft, and a shut-off valve selectively communicating the first space and the second space.

When the shutoff valve is opened and the oil in the first space moves to the second space, the fan body is simultaneously rotated by the viscous resistance of the oil in the second space when the rotor rotates.

On the other hand, the control method of the shut-off valve can be divided into an electronic control method and a mechanical control method.

The electronic control method generally controls the shutoff valve to be opened when a current is applied to the shutoff valve in case of failure of electrical parts and the like installed in the vehicle.

Therefore, when the start of the engine is stopped, the current can not be continuously applied to the shut-off valve, so that the shut-off valve must be kept open.

On the other hand, the technique as a background of the present invention is disclosed in Korean Utility Model Registration No. 20-0461409.

SUMMARY OF THE INVENTION The present invention provides a fluid fan clutch and a control method thereof that can be maintained in a closed state even when the engine is stopped without consuming electric energy.

A fluid fan clutch according to one aspect of the present invention includes: a fan body having an interior divided into a first space and a second space; A rotor rotatably installed in the second space; A rotating shaft fixed to the rotor and receiving power from the outside to rotate the rotor; And a shut-off valve provided in the rotor to selectively block the first space and the second space, wherein when the shut-off valve is opened and the oil in the first space is moved to the second space, The fan body also rotates when the rotor is rotated by the viscous resistance of oil in the space.

The fluid fan clutch may be operated by hydraulic pressure, and may further include a hydraulic pressure unit for operating the shutoff valve to shut off the first space and the second space from each other.

Wherein when the current is applied to the shutoff valve, the shutoff valve blocks the first space and the second space from each other, and when the current applied to the shutoff valve is shut off, Space can be communicated with each other.

The fluid fan clutch may be operated by hydraulic pressure, and may further include a hydraulic pressure unit for operating the shutoff valve to shut off the first space and the second space from each other.

Wherein the hydraulic pressure section includes a compressor that forms the compressed air and a cylinder that uses the compressed air of the compressor to provide a pressure to the shut-off valve, and when the cylinder presses the shut-off valve, 1 space and the second space from each other.

The cylinder is installed on the rotary shaft, and the compressor can be connected to the cylinder by a flow path formed on the rotary shaft.

And a control unit connected to the hydraulic unit, wherein the control unit actuates the cylinder when the rotation of the rotation shaft is reduced to a predetermined level to cause the cylinder to provide pressure to the shutoff valve, .

When the cylinder releases the pressure provided to the shut-off valve, the shut-off valve can communicate the first space and the second space.

According to another aspect of the present invention, there is provided an electric power steering apparatus including a rotary shaft installed in a vehicle equipped with an engine and being powered by the engine, a fan body rotatably coupled to the rotary shaft, A method of controlling a fluid fan clutch including a rotor fixed to the rotating shaft and a shutoff valve provided in the rotor, the method comprising: reducing rotation of the rotating shaft; When the rotation of the rotary shaft is reduced, providing pressure to the shut-off valve to maintain the shut-off valve in a closed state; And blocking the current applied to the shut-off valve when the pressure is applied to the shut-off valve.

The control method of the fluid fan clutch includes the steps of: transmitting power to the rotation shaft of the engine after the current applied to the shutoff valve is shut off; measuring the temperature of the cooling water flowing in the engine; Blocking the pressure delivered to the shutoff valve when the temperature of the coolant is less than the first temperature and blocking the pressure delivered to the shutoff valve after applying the current to the shutoff valve when the temperature of the coolant is less than the first temperature .

According to the fluid fan clutch and the control method thereof according to the present invention, even when the engine is stopped, the shut-off valve is operated without consuming electric energy to prevent the oil of the fan body from moving to the space where the rotor is located .

As a result, when the engine is started and the rotor rotates, the fan body is prevented from rotating unnecessarily, and the startability of the engine can be improved.

1 is a cross-sectional view of a fluid fan clutch according to an embodiment of the present invention,
FIG. 2 is a partial block diagram for explaining the operation of the fluid fan clutch of FIG. 1;
3 is a view for explaining a structure of a hydraulic pressure part provided on a rotary shaft of the fluid fan clutch of FIG. 1,
Fig. 4 is a partial cross-sectional view of the hydraulic portion of the fluid fan clutch of Fig. 1,
5 is a flowchart of a fluid fan clutch according to another embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings.

In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the understanding why the present invention is not intended to be a complete disclosure.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements.

Hereinafter, a fluid fan clutch and a control method thereof according to an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a cross-sectional view of a fluid fan clutch according to an embodiment of the present invention, FIG. 2 is a partial block diagram for explaining the operation of the fluid fan clutch of FIG. 1, FIG. 4 is a partial cross-sectional view of a hydraulic portion of the fluid fan clutch of FIG. 1, and FIG. 5 is a flowchart of a fluid fan clutch according to another embodiment of the present invention.

1 and 2, a fluid fan clutch 100 of the present invention includes a fan body 110, a rotor 120, a rotation shaft 130, and a shutoff valve 140.

The fan body 110 is rotatably coupled to the rotation shaft 130. Therefore, the rotational force of the rotating shaft 130 is not directly transmitted to the fan body 110.

The fan body 110 is coupled to the rotating shaft 130 even though the rotating shaft 130 rotates because the fan body 110 is coupled with the bearing 135 provided on the rotating shaft 130. [ As shown in Fig.

The inside of the fan body 110 is divided into a first space 110a and a second space 110b. The oil is stored in the first space 110a.

The oil stored in the first space 110a moves to the second space 110b when the shutoff valve 140 is opened and then flows into the second space 110b through the return flow path 110c formed in the fan body 110, 1 space 110a.

The rotor 120 is rotatably installed in the second space 110b.

More specifically, the rotor 120 is fixed to the rotation shaft 130. When the rotation shaft 130 receives power from the outside of the engine 20 or the like of the vehicle and rotates, the rotor 120 fixed to the rotation shaft 130 also rotates.

The engine 20 is provided with a cooling passage through which cooling water can flow, and cooling water flowing in the cooling passage of the engine 20 can absorb heat generated in the engine 20. [

Also, the engine 20 may be provided with a temperature sensor 30 for measuring the temperature of the cooling water flowing in the cooling channel of the engine 20.

The shut-off valve 140 may be installed in the rotor 120. However, it is needless to say that the installation position of the shut-off valve 140 is not limited to the rotor 120 but may be installed inside the fan body 110 as well.

The shutoff valve 140 selectively blocks the first space 110a and the second space 110b from each other.

When the shutoff valve 140 is opened, the oil in the first space 110a moves to the second space 110b.

The oil moved to the second space 110b may rotate the fan body 110 when the rotor 120 rotates.

That is, when the rotor 120 rotates due to the viscosity resistance of the oil moved to the second space 110b, the fan body 110 may be simultaneously rotated.

Accordingly, when the amount of oil transferred to the second space 110b increases, the viscosity of oil in the second space 110b also increases, and the rotational speed of the fan body 110 also increases.

On the other hand, the shut-off valve 140 can be operated by an electric current.

More specifically, when a current is applied to the shutoff valve 140, the shutoff valve 140 is operated to close the first space 110a and the second space 110b. When the current applied to the shutoff valve 140 is shut off, the shutoff valve 140 is operated to open so that the first space 110a and the second space 110b communicate with each other.

The fluid fan clutch 100 may further include a controller 160.

The controller 160 may control the current applied to the shutoff valve 140.

The controller 160 is connected to the temperature sensor 30. When the temperature measured by the temperature sensor 30 is equal to or higher than the first temperature, the controller 160 interrupts the current applied to the shutoff valve 140, 1, the controller 160 may apply a current to the shutoff valve 140.

Here, the first temperature refers to the temperature of the predetermined cooling water, and the first temperature refers to a temperature at which the rotation of the fan body 110 is required.

Referring to FIG. 3, the fluid fan clutch 100 may further include a hydraulic portion 150.

The hydraulic pressure unit 150 is operated by hydraulic pressure. More specifically, the hydraulic pressure unit 150 can be operated by compressed air.

The hydraulic pressure unit 150 may transmit pressure to the shutoff valve 140 or release the pressure transmitted to the shutoff valve 140.

When the shutoff valve 140 receives pressure from the hydraulic pressure unit 150, the shutoff valve 140 is closed to block the first space 110a and the second space 110b from each other, 150 release the pressure transferred to the shutoff valve 140, the shutoff valve 140 opens and the first space 110a and the second space 110b communicate with each other.

The hydraulic pressure unit 150 may include a compressor 151 and a cylinder 152.

The compressor 151 forms compressed air. The compressor 151 may be a compressor installed in a vehicle.

The cylinder 152 may be provided on the rotary shaft 130 and may provide pressure to the shut-off valve 140 using compressed air of the compressor 151.

The compressor 151 and the cylinder 152 may be connected to each other by an air line 150a formed on the rotary shaft 130.

Accordingly, the air compressed by the compressor 151 can be transferred to the cylinder 152 through the air line 150a.

The cylinder 152 is installed on the rotary shaft 130 and the compressor 151 is connected to the cylinder 152 by an air line 150a formed on the rotary shaft 130.

The cylinder 152 may include a body 1521 and a pressing piece 1522.

An air inlet 1521a communicating with the air line 150a and through which the compressed air delivered from the air line 150a flows is formed at the center of one side of the body 1521. [

The body 1521 is installed at an end of the rotation shaft 130.

For example, the body 1521 and the rotation shaft 130 may be coupled to each other in such a manner that a screw inserted into a plurality of engagement holes 1521b formed in the body 1521 is coupled to an end of the rotation shaft 130 have.

Accordingly, the body 1521 can rotate together with the rotation shaft 130 in the fan body 110. [

The pressing stick 1522 may be installed on the side surface of the body 1521.

The pressure stick 1522 is operated by compressed air introduced through the air inlet 1521a.

For example, when compressed air flows into the body 1521 through the air inlet 1521a, the pressure stick 1522 moves toward the outside of the body 1521. [

When the pressure stick 1522 moves in the outer direction of the body 1521, the pressure stick 1522 presses the shutoff valve 140 and the shutoff valve 140 moves in the first space 110a. And the second space 110b.

When the compressed air in the body 1521 is removed, the pressure stick 1522 moves inward of the body 1521 again.

When the pressure stick 1522 moves to the inside of the body 1521, the shutoff valve 140 is opened and the first space 110a and the second space 110b communicate with each other.

The cylinder 152 further includes an elastic body 1523 disposed between the pressing stick 1522 and the rotor 120 and pushing the cylinder 152 toward the body 1521 with the pressing stick 1522 .

The elastic body 1523 can move the pressure stick 1522 to the inside of the body 1521 again when the compressed air inside the body 1521 is removed.

More specifically, one end of the elastic body 1523 is in contact with the pressure stick 1522, and the other end of the elastic body 1523 is in contact with a stopper 1524 fixed to the rotor 120, (1522) to the inside of the body (1521).

That is, the stopper 1524 is fixed to the rotor 120, the pressing stick 1522 passing through the stopper 1524 is guided by the stopper 1524, and the pressing stick 1522 is moved, Can reciprocate by the body (1521) and the elastic body (1523).

4, the hydraulic unit 150 may further include an air injection ring 153.

The air injection ring 153 is installed in a manner to surround the rotation shaft 130 and may include a rotation seal 1531.

The air injection ring 153 is connected to the compressor 151 and can inject air into the air line 150a formed on the rotation shaft 130. [

Meanwhile, the controller 160 may be connected to the hydraulic unit 150.

More specifically, the controller 160 may be connected to the compressor 151 or the cylinder 152.

When the temperature measured by the temperature sensor 30 is higher than the first temperature, the controller 160 can supply the compressed air from the compressor 151 to the cylinder 152, If the measured temperature is lower than the set second temperature, the control unit 160 can remove the compressed air delivered from the compressor 151 to the cylinder 152. [

The control unit 160 actuates the cylinder 152 to cause the cylinder 152 to provide pressure to the shutoff valve 140 when the rotation of the rotation shaft 130 is reduced to a predetermined level, The current applied to the valve 140 may be cut off.

Thus, the shutoff valve 140 may operate only by the pressure supplied from the cylinder 152 to block the first space 110a and the second space 110b from each other.

Hereinafter, a method of controlling the fluid fan clutch will be described in detail with reference to the drawings.

Referring to FIG. 5, a method of controlling a fluid fan clutch according to the present invention includes a step 210S of reducing rotation of a rotating shaft, a step 220S of operating a shutoff valve through pressure, Step 230S.

In step 210S in which the rotation of the rotation shaft is reduced, the rotation force transmitted to the rotation shaft 130 is reduced because the engine 20 is stopped. Therefore, the rotational speed of the rotating shaft 130 is decreased.

In the step 220S of operating the shut-off valve through the pressure, when the rotation of the rotation shaft 130 is reduced, the hydraulic pressure is transmitted to the shut-off valve 140.

More specifically, in step 220S of actuating the shut-off valve through the pressure, compressed air is introduced into the body 1521 through the air inlet 1521a, Moves outwardly from the body (1521).

When the pressure stick 1522 is moved to the outside of the body 1521, the pressure stick 1522 exerts pressure on the shutoff valve 140 and presses the shutoff valve 140, which is pressurized by the pressure stick 1522, The valve 140 is operated to close.

At this time, since the current is applied to the shutoff valve 140, the first space 110a and the second space 110b are kept blocked from each other.

Next, in the step 230S of interrupting the current applied to the shutoff valve, when the shutoff valve 140 is operated by the pressure applied by the pressure stick 1522, that is, when the pressure stick 1522 is closed When pressure is applied to the valve 140, the current applied to the shutoff valve 140 is cut off.

Since the cutoff valve 140 is operated by the pressure applied by the pressure stick 1522 even if the current applied to the shutoff valve 140 is shut off, the first space 110a and the second The spaces 110b are kept blocked from each other and oil in the first space 110a can be prevented from flowing into the second space 110b.

That is, according to the present invention, since the first space 110a and the second space 110b are kept blocked by the shutoff valve 140 when the engine 20 is stopped, It is possible to prevent the oil from moving from the first space 110a to the second space 110b so that the engine 20 is operated again so that when the rotor 120 rotates, 110 can be prevented from being unnecessarily rotated.

The control method of the fluid fan clutch includes a step 240S for transmitting power to the rotating shaft, a step 250S for measuring the temperature of the cooling water, a step 260S for applying current to the shutoff valve, (270S) for blocking the pressure that is transmitted to the pressure sensor (270).

In step 240S, when the power is transmitted to the rotating shaft, the engine 20 operates to transmit power to the rotating shaft 130. [ Therefore, the rotation shaft 130 starts to rotate. When the rotation shaft 130 rotates, the rotor 120 fixed to the rotation shaft 130 also rotates simultaneously.

In the step 250S of measuring the temperature of the cooling water, the temperature of the cooling water flowing in the cooling channel of the engine 20 is measured through the temperature sensor 30. [

If the temperature measured by the temperature sensor 30 is equal to or higher than the set first temperature, the pressure supplied to the shutoff valve 140 is removed in step 270S of shutting off the pressure transmitted to the shutoff valve.

Since the current is not applied to the shutoff valve 140 when the pressure applied to the shutoff valve 140 is removed, the shutoff valve 140 is operated to be opened so that the first space 110a, 2 space 110b communicate with each other.

Accordingly, the oil in the first space 110a is moved to the second space 110b, and the fan body 110 is rotated by the viscous resistance of the oil.

When the temperature measured by the temperature sensor 30 is lower than the set first temperature, a current is applied to the shutoff valve 140 in the step 260S of applying the current to the shutoff valve.

When the current is applied to the shutoff valve 140, the shutoff valve 140 is operated to close by the pressure and the current, so that the first space 110a and the second space 110b are blocked do.

Blocking the pressure delivered to the shutoff valve 140 to prevent unnecessary pressure from being transmitted to the shutoff valve 140 and to allow the control unit 150 to control the shutoff valve 140 with current (270S) removes the pressure provided to the shut-off valve (140).

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. Furthermore, the terms "comprises", "comprising", or "having" described above mean that a component can be implanted unless otherwise specifically stated, But should be construed as including other elements. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or essential characteristics thereof. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: Fluid fan clutch
110: fan body
120: Rotor
130:
140: Shutoff valve

Claims (10)

A fan body having an interior divided into a first space and a second space;
A rotor rotatably installed in the second space;
A rotating shaft fixed to the rotor and receiving power from the outside to rotate the rotor; And
And a shut-off valve provided on the rotor to selectively block the first space and the second space,
Wherein the shutoff valve is opened so that when the oil in the first space moves to the second space, the fan body also rotates when the rotor rotates due to viscous resistance of the oil in the second space.
The method according to claim 1,
Further comprising a hydraulic portion that is operated by hydraulic pressure and operates the shut-off valve to shut off the first space and the second space from each other.
The method according to claim 1,
When a current is applied to the isolation valve, the isolation valve blocks the first space and the second space from each other,
And when the current applied to the shut-off valve is cut off, the shut-off valve communicates the first space and the second space with each other.
The method of claim 3,
Further comprising a hydraulic portion that is operated by hydraulic pressure and operates the shut-off valve to shut off the first space and the second space from each other.
The method of claim 3,
The hydraulic pressure unit includes:
A compressor for forming the compressed air,
And a cylinder for providing pressure to the shut-off valve using compressed air of the compressor,
And when the cylinder presses the shut-off valve, the shut-off valve interrupts the first space and the second space from each other.
The method of claim 5,
Wherein the cylinder is installed on the rotary shaft and the compressor is connected to the cylinder by a flow passage formed on the rotary shaft.
The method of claim 5,
And a control unit connected to the hydraulic pressure unit,
Wherein the control unit actuates the cylinder to cause the cylinder to provide pressure to the shut-off valve when the rotation of the rotation shaft is reduced to a predetermined level, and to block the current applied to the shut-off valve.
The method of claim 5,
And the shut-off valve communicates the first space and the second space when the cylinder releases the pressure provided to the shut-off valve.
A rotor rotatably installed in the fan body and fixed to the rotary shaft; a rotor mounted on the rotary shaft to rotate the rotary shaft; A control method for a fluid fan clutch including a shut-off valve provided in the rotor,
Decreasing the rotation of the rotation shaft;
When the rotation of the rotary shaft is reduced, providing pressure to the shut-off valve to maintain the shut-off valve in a closed state; And
Shutting off the current applied to the shut-off valve when the pressure is applied to the shut-off valve.
The method of claim 9,
A step in which the engine applies power to the rotation shaft after the current applied to the isolation valve is cut off,
Measuring the temperature of the cooling water flowing in the engine,
And shutting off the pressure delivered to the shut-off valve when the temperature of the coolant is higher than the first temperature and shutting off the pressure transmitted to the shut-off valve after applying the current to the shut-off valve when the temperature of the coolant is less than the first temperature Wherein the control of the fluid fan clutch comprises the steps of:
KR1020150178496A 2015-12-14 2015-12-14 Control method of fluid fan clutch KR101856129B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150178496A KR101856129B1 (en) 2015-12-14 2015-12-14 Control method of fluid fan clutch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150178496A KR101856129B1 (en) 2015-12-14 2015-12-14 Control method of fluid fan clutch

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Publication Number Publication Date
KR20170070682A true KR20170070682A (en) 2017-06-22
KR101856129B1 KR101856129B1 (en) 2018-05-09

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