KR20170096368A - A method for controlling cooling water improved response for vehicle engine and an apparatus therefor - Google Patents

A method for controlling cooling water improved response for vehicle engine and an apparatus therefor Download PDF

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Publication number
KR20170096368A
KR20170096368A KR1020160017673A KR20160017673A KR20170096368A KR 20170096368 A KR20170096368 A KR 20170096368A KR 1020160017673 A KR1020160017673 A KR 1020160017673A KR 20160017673 A KR20160017673 A KR 20160017673A KR 20170096368 A KR20170096368 A KR 20170096368A
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KR
South Korea
Prior art keywords
cooling water
engine
vehicle
temperature
information
Prior art date
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KR1020160017673A
Other languages
Korean (ko)
Inventor
장성권
Original Assignee
현대자동차주식회사
기아자동차주식회사
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Application filed by 현대자동차주식회사, 기아자동차주식회사 filed Critical 현대자동차주식회사
Priority to KR1020160017673A priority Critical patent/KR20170096368A/en
Publication of KR20170096368A publication Critical patent/KR20170096368A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
    • 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
    • F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
    • 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
    • F01P2025/66—Vehicle speed

Abstract

The present invention relates to a method to control a vehicle engines coolant with improved response and an apparatus thereof. According to the present invention, the method to control a vehicle engines coolant with improved response comprises: (S100) a step of acquiring driving information and navigation information of a vehicle; (S200) a step of drawing an engines rev count and an engine load required after a preset time from the driving information and the navigation information of the vehicle; (S300) a step of drawing a target temperature of coolant required after a preset time from the engine rev count and the engine load; and (S400) a step of adjusting an opening of a flux control valve to allow the measured temperature of cooling water to reach the target temperature of coolant. According to the present invention, the present invention is able to remove a response delay section to reach a target temperature of the engines coolant. Accordingly, the present invention is able to improve fuel efficiency or engine output in all sections of driving.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a control method for a vehicle engine cooling water,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a control method and apparatus for a vehicle engine cooling water with improved responsiveness, and more particularly to a control method for a vehicle engine cooling water with improved responsiveness, And apparatus.

The cooling water of the engine flows around the cylinder and serves to cool the engine. The cooling water of these engines is controlled in temperature depending on the operation region. Japanese Patent Application Laid-Open No. 10-1409483 discloses an apparatus and a method for controlling the temperature of the cooling water of the engine. Japanese Patent Application Laid-Open No. 10-1409483 improves the fuel economy by raising the temperature of the engine coolant under low load conditions and reducing the friction inside the engine. Further, under a high load condition, the temperature of the engine coolant is lowered, suppressing the occurrence of abnormal combustion such as engine knocking or premature ignition, and improving engine output.

In the above conventional technology, the temperature of the engine coolant is controlled according to the engine load condition of the current vehicle. More specifically, an opening control valve is installed in a pipe flowing from the radiator to the engine, and the amount of cooling water flowing into the engine is controlled by controlling the opening amount of the opening control valve. Thereby controlling the temperature of the engine cooling water.

However, since the engine coolant is a fluid having a heat capacity, it takes a physical time to reach the required engine coolant target temperature (i.e., target temperature) through the above-described control. Therefore, there is a problem that the effect of improving the fuel consumption or improving the engine output can not be attained in the response delay period as described above.

1, when the vehicle is rapidly accelerated (high load condition) as illustrated in FIG. 1, the engine cooling water temperature should be controlled to be low, but the engine cooling water target temperature (I.e., a response delay period) of about 10 seconds. Therefore, in the response delay section, the occurrence of abnormal combustion such as engine knocking or premature ignition is suppressed and the effect of improving the engine output can not be achieved.

Japanese Patent Application Laid-Open No. 10-1409483 (Apr. 18, 2014)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to provide a navigation system that predicts an engine speed and an engine load required after a predetermined time using navigation information, And to provide a method and an apparatus for controlling vehicle engine cooling water with improved responsiveness to control the cooling water temperature in advance.

A method of controlling vehicle engine coolant having improved responsiveness according to the present invention includes: acquiring travel information and navigation information of a vehicle (S100); Deriving an engine speed and an engine load required after a predetermined time from the running information and the navigation information of the vehicle (S200); Deriving a required cooling water target temperature from the engine speed and the engine load after a predetermined time (S300); And adjusting the opening amount of the flow control valve so that the temperature of the measured cooling water reaches the cooling water target temperature (S400).

The step (S100) of acquiring the information is characterized by obtaining the vehicle speed, the vehicle speed change amount, and the inclination information of the road on which the vehicle will run after the predetermined time.

The step S200 of deriving the engine speed and the engine load may be based on the vehicle speed, the vehicle speed variation amount, and the inclination information of the road on which the vehicle will run after the predetermined time, Is derived.

The step (S300) of deriving the cooling water target temperature derives the cooling water target temperature from a pre-stored engine load-engine speed map (MAP).

In the step S400 of adjusting the opening amount, the valve opening amount corresponding to the difference between the measured temperature of the cooling water and the target temperature of the cooling water according to the pre-stored temperature difference-valve opening amount map (MAP) And the amount of opening is controlled.

And repeating the step S400 of adjusting the opening amount until the measured temperature of the cooling water and the target temperature of the cooling water coincide with each other.

The storage medium according to the present invention stores the control method of the vehicle engine coolant whose response is improved.

An apparatus for controlling vehicle engine cooling water with improved responsiveness according to the present invention comprises: a storage medium (100); An inflow pipe 200 and an outflow pipe 300 communicating the engine 1 and the radiator 2; A bypass line (400) communicating the inflow pipe (200) and the outflow pipe (300); A temperature sensor (500) mounted on the outlet pipe (300) for measuring the temperature of the engine coolant; The cooling water that is installed in the connecting portion of the inlet pipe 200 and the bypass line 400 and flows through the bypass line 400 flows into the engine 1 through the cooling water discharged from the radiator 2 A flow control valve 600 for controlling the flow rate; An information acquisition unit (700) for acquiring vehicle speed, variation in vehicle speed and inclination information of a road on which the vehicle will run after a predetermined time; And a control unit 800 for controlling the flow rate control valve 600 according to the control method of the vehicle engine cooling water whose response is improved in the storage medium 100 by using the information acquired by the information acquisition unit 700. [ ).

The information acquiring unit 700 is a navigation device.

As described above, according to the present invention, it is possible to eliminate the response delay period in which the engine coolant temperature target temperature is reached.

Accordingly, it is possible to achieve the effect of improving the fuel consumption or improving the engine output in all the running sections.

1 is a view for explaining a problem of the prior art;
2 is a flowchart of a method for controlling vehicle engine coolant with improved responsiveness according to the present invention.
3 is an exemplary view of a pre-stored engine load-engine speed map (MAP) in a method of controlling vehicle engine coolant with improved responsiveness according to the present invention.
4 is a block diagram of a control apparatus for a vehicle engine cooling water with improved responsiveness according to the present invention.

It is to be understood that the words or words used in the present specification and claims are not to be construed in a conventional or dictionary sense and that the inventor can properly define the concept of a term to describe its invention in the best way And should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a flowchart of a method for controlling vehicle engine cooling water with improved responsiveness according to the present invention. FIG. 3 is a flowchart illustrating a method for controlling vehicle engine cooling water with improved responsiveness according to the present invention. Fig. 7 is an illustration of a map (MAP). Fig. 2 and 3, a method for controlling vehicle engine cooling water with improved responsiveness according to the present invention includes: acquiring driving information and navigation information of a vehicle (S100); Deriving an engine speed and an engine load required after a predetermined time from the running information and the navigation information of the vehicle (S200); Deriving a required cooling water target temperature from the engine speed and the engine load after a predetermined time (S300); And adjusting the opening amount of the flow control valve so that the temperature of the measured cooling water reaches the cooling water target temperature (S400).

The step (S100) of acquiring the information is characterized by obtaining the vehicle speed, the vehicle speed change amount, and the inclination information of the road on which the vehicle will run after the predetermined time. The predetermined time is a normal time required for the temperature of the measured cooling water to reach the cooling water target temperature, and may be set differently depending on the heat capacity of the cooling water and the like.

The step S200 of deriving the engine speed and the engine load may be based on the vehicle speed, the vehicle speed variation amount, and the inclination information of the road on which the vehicle will run after the predetermined time, Is derived. That is, to solve the response delay period which was a problem of the prior art, it is necessary to derive the required engine speed and engine load after the response delay time.

The step (S300) of deriving the cooling water target temperature derives the cooling water target temperature from a pre-stored engine load-engine speed map (MAP). As illustrated in FIG. 3, the pre-stored engine load-engine speed map (MAP) can be divided into a plurality of regions, and the coolant target temperatures are set in each of the divided regions. In FIG. 3, the previously stored engine load-engine speed map (MAP) is divided into four regions, and the four regions are classified into a city / congestion region mode, a high-speed traveling mode, a back-up mode, and a rapid acceleration mode. The target temperatures of the cooling water in the respective regions were set at 105 degrees Celsius, 90 degrees Celsius, 85 degrees Celsius, 80 degrees Celsius, and the like. However, the pre-stored engine load-engine speed map (MAP) is not limited to the above, but may be set differently depending on the type of vehicle or the designer's intention.

In the step S400 of adjusting the opening amount, the valve opening amount corresponding to the difference between the measured temperature of the cooling water and the target temperature of the cooling water according to the pre-stored temperature difference-valve opening amount map (MAP) And the amount of opening is controlled. Also, the step of adjusting the opening amount (S400) is repeated until the measured cooling water temperature and the cooling water target temperature coincide with each other.

More specifically, the cooling water flowing into the inflow pipe 200 from the radiator 1 is relatively low-temperature cooling water, and the cooling water passing through the bypass line 400 is relatively high-temperature cooling water. Accordingly, the flow rate of the high-temperature cooling water flowing into the engine 1 and the flow rate of the low-temperature cooling water are different according to the opening amount of the flow control valve 600, and accordingly the temperature of the cooling water measured by the temperature sensor 500 is also changed .

Also, the pre-stored temperature difference-valve opening amount map (MAP) is a map in which the amount of opening of the flow control valve 600 is set so that the difference between the measured temperature of the cooling water and the target temperature of the cooling water decreases.

Accordingly, when the amount of opening of the flow control valve 600 is adjusted according to the pre-stored temperature difference-valve opening amount map MAP, the temperature of the cooling water measured after a predetermined time is controlled to coincide with the cooling water target temperature, It is possible to solve the response delay period in which the cooling water target temperature is reached. In addition, by the preliminary cooling water temperature control as described above, it is possible to achieve the effect of improving the fuel consumption or improving the engine output in the vehicle running range.

FIG. 4 is a block diagram of a control apparatus for a vehicle engine cooling water with improved responsiveness according to the present invention. Referring to FIG. 4, an apparatus for controlling vehicle engine cooling water with improved responsiveness according to the present invention includes a storage medium 100, an inlet pipe 200, an outlet pipe 300, a bypass line 400, A controller 500, a flow control valve 600, an information acquisition unit 700, and a control unit 800.

The control method of the vehicle engine cooling water with improved responsiveness is stored in the storage medium (100). The inlet pipe 200 and the outlet pipe 300 serve to communicate the engine 1 and the radiator 2. The bypass line 400 allows the inlet pipe 200 and the outlet pipe 300 to communicate with each other.

The temperature sensor 500 is mounted on the outlet pipe 300 to measure the temperature of the engine coolant. The flow rate control valve 600 is installed in the communication part between the inlet pipe 200 and the bypass line 400 and is connected to the cooling water discharged from the radiator 2 and the cooling water discharged through the bypass line 400 And serves to regulate the flow rate of cooling water flowing into the engine (1).

The information acquiring unit 700 acquires the vehicle speed, the vehicle speed change amount, and the inclination information of the road on which the vehicle will run after a predetermined time, and the information acquiring unit 700 may be navigation.

The controller 800 controls the flow rate of the refrigerant flowing through the flow control valve 600 based on the information acquired by the information acquiring unit 700, Controls the amount of exposure.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory only and are not restrictive of the invention, as claimed, and will be fully understood by those of ordinary skill in the art. The present invention is not limited thereto. It will be apparent to those skilled in the art that various substitutions, modifications and variations are possible within the scope of the present invention, and it is obvious that those parts easily changeable by those skilled in the art are included in the scope of the present invention .

100 storage medium
200 inflow pipe
300 Outflow pipe
400 bypass line
500 temperature sensor
600 flow control valve
700 information acquisition unit
800 control unit

Claims (9)

Acquiring travel information and navigation information of the vehicle (S100);
Deriving an engine speed and an engine load required after a predetermined time from the running information and the navigation information of the vehicle (S200);
Deriving a required cooling water target temperature from the engine speed and the engine load after a predetermined time (S300); And
Adjusting the opening amount of the flow control valve so that the temperature of the measured cooling water reaches the cooling water target temperature (S400);
And a controller for controlling the engine cooling water. The method according to claim 1,
The step (S100) of acquiring the information acquires the vehicle speed, the vehicle speed change amount, and the inclination information of the road on which the vehicle is to run after the predetermined time. 3. The method of claim 2,
The step S200 of deriving the engine speed and the engine load may be based on the vehicle speed, the vehicle speed variation amount, and the inclination information of the road on which the vehicle will run after the predetermined time, Wherein the controller is configured to derive the response characteristic of the vehicle engine cooling water. The method according to claim 1,
Wherein the step (S300) of deriving the cooling water target temperature derives the cooling water target temperature from a pre-stored engine load-engine speed map (MAP). The method according to claim 1,
In the step S400 of adjusting the opening amount, the valve opening amount corresponding to the difference between the measured temperature of the cooling water and the target temperature of the cooling water according to the pre-stored temperature difference-valve opening amount map (MAP) And controlling the amount of opening of the vehicle engine cooling water. The method according to claim 1,
And repeating the step S400 of adjusting the amount of opening until the measured temperature of the cooling water matches the target temperature of the cooling water (S400). A storage medium storing a control method of vehicle engine cooling water with improved responsiveness according to any one of claims 1 to 6. A storage medium (100) according to claim 7;
An inflow pipe 200 and an outflow pipe 300 communicating the engine 1 and the radiator 2;
A bypass line (400) communicating the inflow pipe (200) and the outflow pipe (300);
A temperature sensor (500) mounted on the outlet pipe (300) for measuring the temperature of the engine coolant;
The cooling water that is installed in the connecting portion of the inlet pipe 200 and the bypass line 400 and flows through the bypass line 400 flows into the engine 1 through the cooling water discharged from the radiator 2 A flow control valve 600 for controlling the flow rate;
An information acquisition unit (700) for acquiring vehicle speed, variation in vehicle speed and inclination information of a road on which the vehicle will run after a predetermined time; And
The control unit 800 controls the flow rate control valve 600 according to the control method of the vehicle engine cooling water whose response is improved in the storage medium 100 by using the information acquired by the information acquisition unit 700. [ ;
And a controller for controlling the engine cooling water. 9. The method of claim 8,
Wherein the information acquisition unit (700) is a navigation system.
KR1020160017673A 2016-02-16 2016-02-16 A method for controlling cooling water improved response for vehicle engine and an apparatus therefor KR20170096368A (en)

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KR1020160017673A KR20170096368A (en) 2016-02-16 2016-02-16 A method for controlling cooling water improved response for vehicle engine and an apparatus therefor

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101960186B1 (en) * 2017-09-20 2019-03-19 주식회사 현대케피코 Apparatus and method of cooling water control for each channel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101960186B1 (en) * 2017-09-20 2019-03-19 주식회사 현대케피코 Apparatus and method of cooling water control for each channel

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