KR20190079984A - The car's diesel engine cooling system - Google Patents

The car's diesel engine cooling system Download PDF

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Publication number
KR20190079984A
KR20190079984A KR1020170182131A KR20170182131A KR20190079984A KR 20190079984 A KR20190079984 A KR 20190079984A KR 1020170182131 A KR1020170182131 A KR 1020170182131A KR 20170182131 A KR20170182131 A KR 20170182131A KR 20190079984 A KR20190079984 A KR 20190079984A
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South Korea
Prior art keywords
coolant
cooling water
engine
temperature
thermostat
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KR1020170182131A
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Korean (ko)
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KR102006636B1 (en
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전영준
이경우
진교승
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쌍용자동차 주식회사
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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
    • F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
    • 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
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • 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
    • F01P2037/00—Controlling
    • F01P2037/02—Controlling starting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/04—Lubricant cooler

Abstract

The present invention relates to a diesel engine cooling device for a vehicle. In the past, the temperature of an engine could not be rapidly increased in case of an initial start. Therefore, the diesel engine cooling device includes: a thermostat (100) installed on a passage for coolant flowing in from a radiator to control a coolant flowrate by being turned on/off depending on set temperature; an oil cooler (200) including a first inline taking the coolant from the radiator regardless of whether the thermostat (100) is open or not, and a second inline taking the coolant through the thermostat (100) being open; a water pump (300) circulating the coolant to the cylinder block and the oil cooler (200); and a coolant outlet line (220) connected to a bypass passage of an engine block to make the water pump (300) separate from a passage (210) for the coolant supplied from the water pump (300) to the cylinder block to supply the coolant, of which temperature has been increased due to a heat exchange in the oil cooler (200), to an extra circuit. According to the present invention, since the coolant outlet line (220) supplying the coolant with an increased temperature to the cylinder block is formed in the oil cooler (200), the supply of the coolant with an increased temperature enables the temperature of the engine to be quickly increased for an initial start, so time for warmup can be reduced, and also, warm air can be quickly supplied into the interior in winter, so convenience for passengers can be improved.

Description

자동차의 디젤엔진 냉각장치{The car's diesel engine cooling system}[0001] The present invention relates to a diesel engine cooling system for a vehicle,

본 발명은 자동차의 디젤엔진 냉각장치에 관한 것으로서 더욱 상세히는 오일쿨러에서 열 교환으로 온도 상승된 냉각수를 별도 회로로 엔진에 공급하여 초기 시동 시 엔진의 온도 상승이 빨리 이루어지도록 하여 그만큼 연료절감을 이룰 수 있도록 한 자동차의 디젤엔진 냉각장치에 관한 것이다.
More particularly, the present invention relates to a diesel engine cooling apparatus for an automobile, and more particularly, to a system for supplying cooling water whose temperature has been raised by heat exchange in an oil cooler to an engine in a separate circuit, To a diesel engine cooling apparatus of an automobile.

일반적으로 자동차의 엔진 구동 시 연소실에서 발생하는 고온의 열이 실린더블록, 실린더헤드, 피스톤 등으로 전달되는바 엔진의 과열을 방지함과 동시에 피스톤이나 가스켓 같은 각 구성부품의 온도가 일정온도 이상으로 상승되는 것을 방지하기 위하여 냉각장치가 설치되고 있음은 주지된 사실이다.Generally, when high temperature heat generated in a combustion chamber is transmitted to a cylinder block, a cylinder head, a piston or the like during driving of an automobile engine, the temperature of each component such as a piston or gasket rises to a certain temperature or more It is a well-known fact that a cooling device is installed in order to prevent it from becoming.

근래에는 자동차 엔진의 고출력화에 따라 엔진의 열부하가 증가되는 추세이며, 이러한 열부하의 증가에 따라 엔진의 냉각성능에 대한 중요성은 더욱 커지고 있다.In recent years, the thermal load of the engine has been increasing with the increase in the output of the automobile engine. As the heat load increases, the cooling performance of the engine becomes more important.

엔진의 냉각방식에는 외부의 공기로 직접 냉각하는 공랭식과 냉각수를 내부로 순환시켜 냉각하는 수냉식이 있는데 자동차의 냉각장치에 주로 사용되는 것은 수냉식으로 냉각수를 엔진내부로 순환시켜 냉각하는 방식인 수냉식 엔진의 냉각장치는 라디에이터에서 나온 냉각수가 워터펌프에 의해 실린더블록 및 실린더헤드에 형성된 워터자켓으로 보내져 엔진을 냉각한 다음 다시 엔진으로부터 워터호스를 통하여 라디에이터로 유입되어 냉각팬에 의해 냉각되거나 엔진이 과열되지 않은 상태에서는 다시 워터펌프에 의해 실린더블록으로 압송되는 시스템을 이루고 있다.The cooling system of the engine includes air-cooling type that directly cools the outside air and water-cooled type that circulates cooling water to the inside. The main use for the cooling system of the automobile is a water-cooled engine which is a method of cooling the cooling water to the inside of the engine by water- The cooling device is designed so that the cooling water from the radiator is sent to the cylinder block and the water jacket formed in the cylinder head by the water pump to cool the engine and then to the radiator from the engine through the water hose to be cooled by the cooling fan, In this state, the water pump pumps the water to the cylinder block.

자동차 엔진 냉각장치의 종래기술이 하기의 <특허문헌 1 >에 개시되어 있다.The prior art of an automobile engine cooling apparatus is disclosed in Patent Document 1 below.

<특허문헌 1> 에 개시된 종래기술의 엔진 냉각장치에서는 라디에이터의 납 코팅부를 덮도록 산화철을 공급하는 산화철 공급부를 포함하고 있기 때문에 저렴하고도 간단한 구성으로 라디에이터의 납 코팅부가 부식되는 것에 의한 냉각수의 순환장애 및 그로 인한 엔진의 과열을 방지할 수 있도록 한 것이다.
The conventional engine cooling apparatus disclosed in Patent Document 1 includes an iron oxide supply unit for supplying iron oxide to cover the lead coated portion of the radiator. Therefore, the circulation of the coolant water due to the corrosion of the lead coated portion of the radiator Thereby preventing the engine from overheating.

대한민국 공개특허 10-2002-0043873호(2002.06.12. 공개)(자동차의 엔진 냉각장치)Korean Patent Publication No. 10-2002-0043873 (published on Jun. 12, 2002) (Engine Cooling Apparatus of Automobile)

그러나 상기와 같은 선행기술에서 언급한 냉각장치는 초기 엔진 시동 시 엔진을 정상온도에 도달시키기 위해서 많은 시간이 필요한 것으로 특히, 디젤엔진은 가솔린엔진보다 구조가 복잡하고 무거워 워밍업이 어느 정도 필요한데, 날씨가 추울수록 이 워밍업을 하지 않고 그대로 운행을 하게 되면 냉각수와 오일 등이 제대로 적절한 온도에 도달하지 않기 때문에 엔진의 수명이 줄어들 수 있다.However, the cooling system mentioned above requires a lot of time to reach the normal temperature of the engine at the time of starting the engine. Especially, the diesel engine is more complicated than the gasoline engine and requires some warming up. If the engine does not warm up, the cooler water and oil do not reach the proper temperature, which can reduce the life of the engine.

그리고 겨울철 엔진이 정상온도에 도달되지 않은 상태에서 히터를 작동시키면 더운 바람이 나오지를 않아 운전자는 엔진이 정상온도에 도달될 때까지 긴 시간동안 추위 속에서 기다려야 한다.And if the heater is operated with the winter engine not reaching the normal temperature, the hot wind will not come out and the driver will have to wait in the cold for a long time until the engine reaches the normal temperature.

그런데 선행기술에서의 냉각장치는 엔진을 과열시키지 않도록 하는데에는 효과가 있는 것이나 초기 엔진 시동 시 빠른 시간 내에 엔진의 온도를 상승시키지 못한 문제점이 있었다.However, the cooling apparatus in the prior art has an effect in preventing the engine from overheating, but the engine temperature can not be raised within a short period of time at the initial engine startup.

따라서 본 발명은 상기와 같은 선행기술에서 발생하는 제반 문제점을 해결하기 위해서 제안된 것으로서, 본 발명의 목적은 초기 엔진 시동 시 빠른 시간 내에 엔진의 온도가 상승되도록 하여 워밍업시간을 단축함은 물론 겨울철 더운 바람을 신속하게 실내로 공급하여 탑승자의 편의성을 향상시킨 자동차의 디젤엔진 냉각장치에 관한 것이다.
Accordingly, it is an object of the present invention to shorten the warm-up time by increasing the temperature of the engine within a short period of time at the time of starting the engine at the initial stage, The present invention relates to a diesel engine cooling apparatus for an automobile, which improves the convenience of a passenger by supplying wind quickly to the room.

본 발명의 목적을 달성하기 위해서는 자동차의 디젤엔진 냉각장치에 있어서, 라디에이터에서 유입되는 냉각수 통로에 설치되어 설정된 온도에 따라 온/오프되면서 냉각수 통과 유량을 제어하는 써모스탯; 써모스탯의 개폐 여부와 관계없이 라디에이터의 냉각수가 유입되는 제1인라인과, 열린 써모스탯을 통해 냉각수가 유입되는 제2인라인이 구분되어 구비된 오일쿨러; 냉각수를 실린더블록과 오일쿨러로 순환시키는 워터펌프; 워터펌프 측 냉각수를 실린더블록으로 공급되는 냉각수통로와 구분되도록 엔진블록의 바이패스 통로와 연결되어 오일쿨러에서 열 교환으로 온도 가 상승된 냉각수를 별도 회로로 공급하는 오일쿨러의 냉각수 출구라인; 으로 구성함으로써 달성된다.
To achieve the object of the present invention, there is provided a diesel engine cooling apparatus for an automobile, comprising: a thermostat installed in a cooling water passage introduced from a radiator and controlling a flow rate of cooling water while being turned on / off according to a set temperature; An oil cooler having a first inline through which coolant of a radiator flows and a second inline into which coolant flows through an open thermostat irrespective of whether the thermostat is opened or closed; A water pump circulating the cooling water to the cylinder block and the oil cooler; A coolant outlet line of the oil cooler connected to the bypass passage of the engine block so as to separate cooling water from the water pump side from the cooling water passage supplied to the cylinder block and supplying cooling water having a temperature raised by heat exchange from the oil cooler to a separate circuit; .

이러한 본 발명은 초기 엔진 시동 시 빠른 시간 내에 엔진이 정상온도에 도달되어 워밍업 시간을 단축할 수 있음에 따라 하여 연료절감을 이룰 수 있도록 함은 물론 겨울철 그만큼 더운 바람을 빨리 실내로 공급하여 탑승자의 편의성을 향상시킨 효과가 있다.
The present invention can reduce fuel consumption by shortening the warm-up time due to the engine reaching a normal temperature in a short period of time at the time of starting the engine at the initial stage. In addition, .

도 1 은 본 발명에 따른 냉각장치를 예시한 도면.
도 2 는 본 발명에 따른 냉각장치를 예시한 도면.1 shows a cooling device according to the invention;
Figure 2 illustrates a cooling device according to the present invention.

이하 본 발명의 상기 목적을 달성할 수 있는 기술 구성 및 작용을 바람직한 실시 예로 첨부한 도면에 의해 구체적으로 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 1 은 본 발명에 따른 냉각장치를 예시한 도면이고, 도 2 는 본 발명에 따른 냉각장치를 예시한 도면이다.FIG. 1 is a view illustrating a cooling device according to the present invention, and FIG. 2 is a view illustrating a cooling device according to the present invention.

이와 같은 본 발명은 자동차의 디젤엔진 냉각장치에 있어서, 라디에이터에서 유입되는 냉각수 통로에 설치되어 설정된 온도에 따라 온/오프되면서 냉각수 통과 유량을 제어하는 써모스탯(100); 써모스탯(100)의 개폐 여부와 관계없이 라디에이터의 냉각수가 유입되는 제1인라인(도면중 미도시)과, 열린 써모스탯(100)을 통해 냉각수가 유입되는 제2인라인(도면중미도시)이 구분되어 구비된 오일쿨러(200); 냉각수를 실린더블록과 오일쿨러(200)로 순환시키는 워터펌프(300); 워터펌프(300) 측 냉각수를 실린더블록으로 공급되는 냉각수 통로(210)와 구분되도록 엔진블록의 바이패스 통로와 연결되어 오일쿨러(200)에서 열 교환으로 온도 상승된 냉각수를 별도 회로로 공급하는 오일쿨러의 냉각수 출구라인(220); 으로 구성된 것을 특징으로 한다.According to the present invention, there is provided a diesel engine cooling apparatus for an automobile, comprising: a thermostat 100 installed in a cooling water passage introduced from a radiator and controlling a flow rate of cooling water while being turned on / off according to a set temperature; A first inline (not shown in the drawing) in which the cooling water of the radiator flows (regardless of whether the thermostat 100 is open or closed) and a second inline into which the cooling water flows through the open thermostat 100 An oil cooler 200 provided with the oil cooler 200; A water pump 300 for circulating cooling water to the cylinder block and the oil cooler 200; An oil that is connected to the bypass passage of the engine block so as to be separated from the cooling water passage 210 that is supplied to the cylinder block and serves as a separate circuit for supplying cooling water whose temperature has been raised by heat exchange in the oil cooler 200 A cooling water outlet line 220 of the cooler; .

이러한 본 발명은 설정된 온도에 따라 온/오프되는 써모스탯(100)에 의해 라디에이터의 냉각수가 열린 써모스탯(100)을 통해 오일쿨러(200)로 공급되고, 워터펌프(300)에의해 냉각수를 실린더블록과 오일쿨러(200)로 순환시켜 엔진블록의 바이패스 통로로 보내 엔진을 냉각시키도록 한 것은 종래와 마찬가지이다.In the present invention, the cooling water of the radiator is supplied to the oil cooler 200 through the thermostat 100 with the cooling water of the radiator opened by the thermostat 100 which is turned on / off according to the set temperature, Block and the oil cooler 200 to the bypass passage of the engine block so as to cool the engine.

그러나 본 발명에서의 특징은 오일쿨러(200)에서 열 교환으로 온도 상승된 냉각수를 엔진블록의 바이패스 통로로 바로 보내 초기시동 시 엔진의 온도상승이 빨리 이루어질 수 있도록 한 것이다.However, the present invention is characterized in that cooling water whose temperature has been raised by heat exchange in the oil cooler 200 is directly sent to the bypass passage of the engine block so that the temperature of the engine can be increased quickly at the time of the initial start.

즉, 본 발명은 오일쿨러(200)에 냉각수를 실린더블록으로 공급하는 냉각수 통로(210)와는 별도로 냉각수 출구라인(220)을 형성하여 오일쿨러(200)에서 열 교환으로 온도 상승된 냉각수를 냉각수 출구라인(220)을 통해 실린더블록으로 바로 공급하여 그만큼 초기 시동 시 엔진의 온도상승이 빨리 이루어지도록 하여 워밍업시간을 단축함은 물론 겨울철 더운 바람을 신속하게 실내로 공급하여 탑승자의 편의성을 향상킬 수 있는 것이다.That is, in the present invention, a cooling water outlet line 220 is formed separately from the cooling water passage 210 for supplying cooling water to the oil cooler 200 as a cylinder block, so that the cooling water whose temperature has been raised by heat exchange in the oil cooler 200, The temperature of the engine is quickly raised during the initial start, thereby shortening the warm-up time. In addition, it is possible to quickly provide hot air in the winter to improve the comfort of the passenger will be.

그리고 본 발명에서는 써모스탯(100)의 작동여부와는 관계없이 냉각수가 유입되는 제1라인의 구경을 써모스탯(100)과 연동되는 제1라인보다 더 큰 구경으로 형성한 것으로 이는 오일쿨러(200)에 별도로 형성된 냉각수 출구라인(220)을 통해 실린더블록으로 공급되는 온도 상승된 냉각수의 수량을 많게 하여 초기시동 시 그만큼 엔진의 온도 상승이 더욱 빨리 이루어지도록 하였다.
In the present invention, regardless of whether the thermostat 100 is operated or not, the diameter of the first line through which coolant flows is larger than that of the first line interlocked with the thermostat 100. This is because the oil cooler 200 The number of the cooling water supplied to the cylinder block through the cooling water outlet line 220 formed separately is increased to increase the temperature of the engine at the time of the initial startup.

100 : 써모스탯 200 : 오일쿨러
210 : 냉각수 통로 220 : 냉각수 출구라인
300 : 워터펌프 100: Thermostat 200: Oil cooler
210: Cooling water passage 220: Cooling water outlet line
300: Water pump

Claims (2)

자동차의 디젤엔진 냉각장치에 있어서,
라디에이터에서 유입되는 냉각수 통로에 설치되어 설정된 온도에 따라 온/오프되면서 냉각수 통과 유량을 제어하는 써모스탯(100);
써모스탯(100)의 개폐 여부와 관계없이 라디에이터의 냉각수가 유입되는 제1인라인과, 열린 써모스탯(100)을 통해 냉각수가 유입되는 제2인라인이 구분되어 구비된 오일쿨러(200);
냉각수를 실린더블록과 오일쿨러(200)로 순환시키는 워터펌프(300);
워터펌프(300) 측 냉각수를 실린더블록으로 공급되는 냉각수 통로(210)와 구분되도록 엔진블록의 바이패스 통로와 연결되어 오일쿨러(200)에서 열 교환으로 온도 상승된 냉각수를 별도 회로로 공급하는 오일쿨러의 냉각수 출구라인(220);
으로 구성되어 온도 상승된 냉각수 공급으로 초기 시동 시 엔진의 온도 상승이 빨리 이루어지도록 한 것을 특징으로 하는 자동차의 디젤엔진 냉각장치.
A diesel engine cooling apparatus for an automobile,
A thermostat 100 installed in a cooling water passage introduced from a radiator and controlling a flow rate of cooling water while being turned on / off according to a set temperature;
An oil cooler 200 having a first inline through which coolant of the radiator flows and a second inline through which coolant flows through the open thermostat 100 regardless of whether the thermostat 100 is open or closed;
A water pump 300 for circulating cooling water to the cylinder block and the oil cooler 200;
An oil that is connected to the bypass passage of the engine block so as to be separated from the cooling water passage 210 that is supplied to the cylinder block and serves as a separate circuit for supplying cooling water whose temperature has been raised by heat exchange in the oil cooler 200 A cooling water outlet line 220 of the cooler;
So that the temperature of the engine is raised quickly during the initial start-up by the supply of the cooled coolant.
제 1 항에 있어서,
써모스탯(100)과 관계없이 냉각수가 유입되는 오일쿨러(200)의 제1인라인 구경을 써모스탯(100)과 연동되는 제2인라인보다 더 큰 구경으로 형성하여
별도 회로인 냉각수 출구라인(220)을 통해 실린더블록으로 공급되는 온도 상승된 냉각수 수량을 더 많게 함으로서 초기 시동 시 엔진의 온도 상승이 신속하게 되도록 한 것을 특징으로 하는 자동차의 디젤엔진 냉각장치.
The method according to claim 1,
The first inline diameter of the oil cooler 200 into which the cooling water flows is set to be larger than the second inline interlocked with the thermostat 100 irrespective of the thermostat 100
Wherein the cooling water outlet line (220), which is a separate circuit, further increases the amount of the increased temperature cooling water supplied to the cylinder block, so that the temperature rise of the engine is accelerated at the initial startup.
KR1020170182131A 2017-12-28 2017-12-28 The car's diesel engine cooling system KR102006636B1 (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH074251A (en) * 1993-06-17 1995-01-10 Yanmar Diesel Engine Co Ltd Diesel engine with intercooler
KR20020043873A (en) 2000-12-04 2002-06-12 류정열 Apparatus for cooling an engine for a motor vehicle
JP4313640B2 (en) * 2003-09-30 2009-08-12 本田技研工業株式会社 Engine cooling system
KR20100058370A (en) * 2008-11-24 2010-06-03 현대자동차주식회사 Automobile water pump
JP2014070501A (en) * 2012-09-27 2014-04-21 Daihatsu Motor Co Ltd Oil cooling structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH074251A (en) * 1993-06-17 1995-01-10 Yanmar Diesel Engine Co Ltd Diesel engine with intercooler
KR20020043873A (en) 2000-12-04 2002-06-12 류정열 Apparatus for cooling an engine for a motor vehicle
JP4313640B2 (en) * 2003-09-30 2009-08-12 本田技研工業株式会社 Engine cooling system
KR20100058370A (en) * 2008-11-24 2010-06-03 현대자동차주식회사 Automobile water pump
JP2014070501A (en) * 2012-09-27 2014-04-21 Daihatsu Motor Co Ltd Oil cooling structure

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