DE102013221729A1 - COOLING SYSTEM OF A VEHICLE WITH ENGINE - Google Patents

Abstract

A cooling system of a vehicle with an engine includes: a main conduit that provides a coolant flow passage; a cooler installed on one side of the main pipe; a pump installed on the other side of the main line; a first branch pipe and a second branch pipe branched from the main pipe; a first heat emitter and a second heat emitter installed on the first branch pipe and the second branch pipe, respectively; and a control valve that supplies a coolant required for the first heat emitter and the second heat emitter by controlling the flow of a coolant flowing from the main pipe to the first branch pipe or the second branch pipe. Therefore, by controlling an amount of each coolant supplied to a first heat emitter including an inverter and a motor and a second heat emitter including a DC / DC converter, a flow rate of a coolant pump or an operating load can be reduced and hence the overall cooling performance can be improved will.

Description

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the priority and benefit of Korean Patent Application No. 10-2012-0147774 filed on 17 December 2012 in the Korean Intellectual Property Office, the entire contents of which are hereby incorporated by reference.

BACKGROUND

area

The present invention relates to a cooling system of a vehicle having an engine that can improve the cooling performance and output by effectively cooling heat emitters that form an environmentally friendly automobile.

background

An ordinary internal combustion engine has a structure in which an engine, a pump and a radiator are coupled in series.

However, an environmentally friendly vehicle having an engine may have many heat emitters in a refrigeration system, requiring the vehicle to have a pump with a high discharge pressure. Consequently, the cooling system of an environmentally friendly motor vehicle is somewhat inefficient.

1 FIG. 13 is a schematic diagram illustrating a conventional cooling system of a vehicle having a motor. FIG.

In relation to 1 For example, a cooling system of a vehicle having an engine includes a radiator 100 , a pump 110 , a main 115 , a first heat emitter 120 , a second heat emitter 130 and a control unit 140 ,

At the main 115 are the cooler 100 and the pump 110 arranged. On a first branch line 116 and a second branch line 117 coming from the main line 115 are branched off, are the first heat emitter 120 or second heat emitter 130 arranged.

The control unit 140 controls an entire coolant supply amount by controlling a rotation amount of the pump 110 ,

However, the control unit controls only the total amount of refrigerant supply and does not supply an appropriate amount of refrigerant to the first heat emitter 120 and second heat emitter 130 is required. As a result, the cooling capacity of the cooling system is lowered, and thus the capacity or operating load of the pump decreases 110 to, which may degrade the performance of the vehicle.

The above information disclosed in this Background section is only for enhancement of understanding of the background of the disclosure.

ZUSMMENFASSUNG

The present disclosure provides a cooling system of a vehicle having an engine with improved cooling performance by supplying a coolant required for each heat emitter, thereby improving the performance of the vehicle by reducing the capacity or operating load of a coolant pump.

An exemplary embodiment of the present disclosure provides a cooling system of a vehicle having an engine including: a main conduit that provides a coolant flow channel; a radiator installed on a first side of the main pipe; a pump installed on a second side of the main pipe; a first branch line and a second branch line branching from the main line; a first heat emitter installed on the first branch line and a second heat emitter installed on the second branch line; and a control valve provided for supplying a coolant necessary for the first heat emitter and the second heat emitter by controlling the flow of a coolant flowing from the main pipe to at least the first branch pipe and / or the second branch pipe.

The first heat emitter may be an inverter or a motor.

The second heat emitter may be a bi-directional high DC converter (BHDC) or a low DC converter (LDC).

The control valve may supply the same coolant flow to the first branch line and the second branch line under a normal operating condition.

The control valve may supply no coolant and the second branch line a coolant in an idling state or a vehicle-holding state of the first branch line.

The cooling system may further include a first temperature sensor adapted to sense a Temperature of the first heating element is provided, and include a second temperature sensor, which is provided for sensing a temperature of the second heating element, wherein the control unit can sample a first temperature and a first temperature rise rate of the first heating element and a second temperature and a second temperature increase rate of the second heating element and for variably supplying a coolant to the first branch line and the second branch line through the control valve according to the first temperature, the first temperature rise rate, the second temperature, and the second temperature rise rate.

The control valve may be a 3-way valve installed at a position branched from the main pipe to the first branch pipe and the second branch pipe.

The control valve may include a first control valve installed on the first branch line and a second control valve installed on the second branch line.

As described above, in a cooling system of a vehicle having an engine according to an exemplary embodiment of the present disclosure, by controlling an amount of each coolant supplied to a first heat emitter with an inverter and a motor and to a second heat emitter with a DC converter, a capacity of a coolant pump or an operating load can be reduced, and thus the cooling performance of the entire cooling system can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS

1 FIG. 13 is a schematic diagram illustrating a conventional cooling system of a vehicle having a motor. FIG.

2 FIG. 10 is a schematic diagram illustrating a cooling system of a vehicle having a motor according to an exemplary embodiment of the present disclosure. FIG.

3 FIG. 12 is a schematic cross-sectional view of a 3-way valve applied to a cooling system of a vehicle with a motor according to an exemplary embodiment of the present disclosure. FIG.

4 FIG. 10 is a schematic diagram of a cooling system of a vehicle having an engine according to another exemplary embodiment of the present disclosure. FIG.

5 FIG. 10 is a schematic diagram of a cooling system of a vehicle having an engine according to another exemplary embodiment of the present disclosure. FIG.

DETAILED DESCRIPTION

Various exemplary embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings.

2 FIG. 10 is a schematic diagram illustrating a cooling system of a vehicle having a motor according to an exemplary embodiment of the present disclosure. FIG.

In relation to 2 For example, a cooling system of a vehicle having an engine is applied to a hybrid vehicle, a fuel cell vehicle, or an electric vehicle that are environmentally friendly vehicles having an engine, and a radiator 100 , a pump 110 , a main 115 , a first heat emitter 120 , a second heat emitter 130 , a control unit 140 and a control valve 200 contains.

Other components of other vehicles that are not described in an exemplary embodiment of the present disclosure are a well-known technology and, therefore, a detailed description thereof will be omitted.

At the main 115 are the cooler 100 and the pump 110 arranged. On a first branch line 116 and a second branch line 117 coming from the main line 115 are branched off, are the first heat emitter 120 or second heat emitter 130 arranged.

The control unit 140 independently controls the control valve 200 and the pump 110 and thereby independently controls an amount of a coolant to the first heat emitter 120 and second heat emitter 130 is supplied.

In an exemplary embodiment of the present disclosure, the first includes heat emitters 120 an inverter and a motor and the second heat emitter 130 a BHDC or LDC.

For example, in a general city driving condition, when a coolant of 10 LPM (liters per minute) should be supplied to each part (inverter, motor, LDC, BHDC), if a capacity of a pump is 20 LPM, without the control valve 200 12 LPM refrigerant is supplied to a flow passage of the first branch and an 8 LPM refrigerant is supplied to a flow channel of the second branch.

Therefore, to meet a flow would require a discharge rate of the pump 110 be increased to 25 LPM to allow 15 LPM of the first branch line 116 and 10 LPM of the second branch 117 be supplied.

In an exemplary embodiment of the present disclosure, through the use of the control valve 200 for a pump 110 with a capacity of 20 LPM a coolant with 10 LPM each of the first branch line 116 and second branch line 117 be supplied.

By using the control valve 200 Therefore, the capacity of the pump 110 can be reduced or an operating load can be reduced, thereby leading to a reduction in a flow rate of an entire coolant. Consequently, the cooling performance of the cooling system can be improved.

3 FIG. 12 is a schematic cross-sectional view of a 3-way valve applied to a cooling system of a vehicle with a motor according to an exemplary embodiment of the present disclosure. FIG.

In relation to 3 can the control valve 200 a 3-way control valve structure that distributes a coolant amount that is supplied in one direction in second and third directions and an axis of rotation 300 , which is arranged at a branch point, and a valve wing 310 contains, that at the rotation axis 300 is attached.

4 FIG. 10 is a schematic diagram of a cooling system of a vehicle having an engine according to another exemplary embodiment of the present disclosure. FIG. In 4 be sections that are in the 1 . 2 and 3 are not described in detail, and a detailed description of components included in the 1 . 2 and 3 are identical or identical to described sections will be omitted.

In relation to 4 is a first temperature sensor 400 on the first heat emitter 120 and a second temperature sensor 410 at the second heat emitter 130 arranged. The first temperature sensor 400 may be a temperature of the first heat emitter 120 and the second temperature sensor 410 may be a temperature of the second heat emitter 130 scan.

The control unit 140 samples the first temperature and the first temperature rise rate of the first heat emitter 120 from the first temperature sensor 400 and samples a second temperature and a second temperature rise rate of the second heat emitter 130 from the second temperature sensor 410 from. The control unit 140 then can the sampled temperature information to control the pump 110 and the control valve 200 for controlling the supply of the coolant to the first heat emitter 120 and second heat emitter 130 use and thereby obtains an efficient cooling performance.

5 FIG. 10 is a schematic diagram of a cooling system of a vehicle having an engine according to another exemplary embodiment of the present disclosure. FIG.

In 5 be sections that are in the 1 . 2 . 3 and 4 are not described in detail, and a detailed description of components included in the 1 . 2 . 3 and 4 are identical or identical to described sections will be omitted.

In relation to 5 are the first branch line 116 and second branch line 117 from the main 115 diverted. As a control valve is a first control valve 500 on the first branch line 116 arranged and a second control valve 510 on the second branch line 117 arranged.

The control unit 140 can be the first control valve 500 and second control valve 510 control and thereby control a quantity of a coolant, the first heat emitter 120 and second heat emitter 130 is supplied. In some embodiments, when the vehicle is idling or stopped, the control valve may control the coolant so as not to supply coolant to the first branch, and to supply coolant to the second branch.

In addition, the control unit controls 140 at the same time a discharge amount of the pump 110 ,

While this disclosure has been described in conjunction with what is presently considered to be practical exemplary embodiments, it should be understood that the disclosure is not limited to the exemplary embodiments. On the contrary, it is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

LIST OF REFERENCE NUMBERS

100

cooler

110

pump

115

main

116

First branch line

117

Second branch line

120

First heat emitter

130

Second heat emitter

140

control unit

200

control valve

300

axis of rotation

310

valve blade

400

First temperature sensor

410

Second temperature sensor

500

First control valve

510

Second control valve

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• KR 10-2012-0147774 [0001]

Claims (8)

A cooling system of a vehicle having an engine, the cooling system comprising: a main pipe provided for supplying a coolant flow passage; a radiator installed on a first side of the main pipe; a pump installed on a second side of the main pipe; a first branch line and a second branch line branching from the main line; a first heat emitter installed on the first branch line and a second heat emitter installed on the second branch line; and a control valve provided for supplying a coolant required for the first heat emitter and the second heat emitter by controlling the flow of a refrigerant flowing from the main pipe to at least the first branch pipe and / or the second branch pipe. Cooling system according to claim 1, wherein the first heat emitter is an inverter or a motor. The refrigeration system of claim 2, wherein the second heat emitter is a high DC bidirectional converter or a low DC converter. The cooling system according to claim 1, wherein the control valve is provided at a normal operating condition for supplying the same refrigerant flow to the first branch pipe and the second branch pipe. The cooling system according to claim 4, wherein the control valve in a neutral state or a vehicle-holding state of the first branch line does not supply coolant and supplies a coolant to the second branch line. Cooling system according to claim 1 further comprising a first temperature sensor, which is provided for sensing a temperature of the first heating element, and a second temperature sensor, which is provided for sensing a temperature of the second heating element, the control unit being provided for: Sensing a first temperature and a first temperature rise rate of the first heating element and sensing a second temperature and a second temperature rise rate of the second heating element, and variably supplying a coolant to the first branch line and the second branch line through the control valve according to the first temperature, the first temperature rise rate, the second temperature, and the second temperature rise rate. The cooling system according to claim 1, wherein the control valve is a 3-way valve installed at a position branched from the main pipe to the first branch pipe and the second branch pipe. The cooling system of claim 1, wherein the control valve comprises: a first control valve installed on the first branch line; and a second control valve installed on the second branch line.

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