KR100482046B1 - Cooling System for Bus - Google Patents
Cooling System for Bus Download PDFInfo
- Publication number
- KR100482046B1 KR100482046B1 KR10-2001-0050618A KR20010050618A KR100482046B1 KR 100482046 B1 KR100482046 B1 KR 100482046B1 KR 20010050618 A KR20010050618 A KR 20010050618A KR 100482046 B1 KR100482046 B1 KR 100482046B1
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- South Korea
- Prior art keywords
- bus
- radiator
- cooling fan
- coupled
- engine
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- Legal status (The legal status 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 status listed.)
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Classifications
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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
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
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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
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/10—Guiding or ducting cooling-air, to, or from, liquid-to-air heat exchangers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/10—Road Vehicles
- B60Y2200/14—Trucks; Load vehicles, Busses
- B60Y2200/143—Busses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/43—Engines
- B60Y2400/433—Gas Engines, e.g. using LPG, natural gas or gasifiers
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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
- F01P2070/00—Details
- F01P2070/50—Details mounting fans to heat-exchangers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/22—Fastening; Joining by using magnetic effect
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
본 발명은 버스용 냉각장치에 관한 것으로, 라디에이터와 쿨링팬을 종방향으로 배치하여 구동시킴으로써 특히 천연가스 버스(CNG Bus)에서와 같이 발열량이 큰 엔진을 원활히 냉각시킬 수 있도록 한 것이다.The present invention relates to a cooling device for a bus, in which the radiator and the cooling fan are arranged and driven in the longitudinal direction so as to smoothly cool an engine having a large amount of heat, such as in a natural gas bus.
이를 위해 본 발명은, 버스 엔진룸의 일측면부에 형성된 공기흡입구와, 이 공기흡입구와 나란하도록 엔진룸 일측에서 공기흡입구와 인접하여 종방향으로 배치된 라디에이터와, 이 라디에이터의 일측부에 나란하게 배치되어 공기흡입구로부터 외부 공기를 강제 흡입하는 쿨링팬과, 엔진의 구동력을 전달받아 상기 쿨링팬을 구동시키는 동력전달수단을 포함하여 구성된 버스용 냉각장치를 제공한다.To this end, the present invention, the air inlet formed in one side surface portion of the bus engine room, a radiator disposed in the longitudinal direction adjacent to the air inlet at one side of the engine room to be parallel to the air intake, and arranged side by side on one side of the radiator It provides a cooling device for a bus comprising a cooling fan for forcibly drawing outside air from the air inlet, and a power transmission means for receiving the driving force of the engine to drive the cooling fan.
Description
본 발명은 버스의 엔진을 냉각시키기 위한 장치에 관한 것으로, 특히 천연가스 버스(CNG Bus)와 같이 발열량이 큰 엔진을 원활히 냉각시킬 수 있는 버스용 냉각장치에 관한 것이다.The present invention relates to an apparatus for cooling an engine of a bus, and more particularly, to a bus cooling apparatus capable of smoothly cooling an engine having a large heat generation value, such as a natural gas bus.
일반적으로, 자동차의 냉각장치는 엔진의 실린더 블록과 실린더 헤드에 형성되는 냉각수 통로를 따라 유동하면서 열을 흡수한 엔진 냉각수를 냉각시키기 위해 사용한다.In general, an automobile cooling apparatus is used to cool an engine coolant that absorbs heat while flowing along a cooling water passage formed in an engine cylinder block and a cylinder head.
첨부된 도면 중 도 1은 버스에 적용된 종래의 냉각장치 구성을 개략적으로 나타낸 것인데, 통상적으로 버스의 경우 엔진룸은 후방쪽에 제공되며, 엔진룸 내부에서 엔진(1)의 측방에 라디에이터(4)가 설치된다. Figure 1 of the accompanying drawings schematically shows a conventional chiller configuration applied to the bus, typically in the case of the bus engine room is provided on the rear side, the radiator 4 is provided on the side of the engine 1 inside the engine room Is installed.
상기 라디에이터(4)는 엔진(1)에서 가열된 냉각수를 라디에이터 코어를 통하여 통과시켜 공기와 접촉하게 함으로써 냉각기능을 수행하게 되는 바, 라디에이터(4)는 단위면적당 발열량이 크고, 공기 및 냉각수의 흐름 저항이 적으며 가볍고 견고한 것이 좋다.The radiator 4 performs a cooling function by passing the cooling water heated in the engine 1 through the radiator core to contact the air. The radiator 4 has a large amount of heat generated per unit area and flows of air and coolant. Low resistance, light and solid is good.
한편, 상기 라디에이터(4)의 후방에는 외부로부터 공기를 흡입하기 위한 쿨링팬(5)이 설치되고, 라디에이터(4)가 위치한 버스의 차체 측면부에는 외부 공기가 유입되는 공기흡입구(3)가 형성되어 있다.On the other hand, a cooling fan 5 for sucking air from the outside is installed at the rear of the radiator 4, and an air inlet 3 through which the outside air is introduced is formed at the side surface of the body of the bus where the radiator 4 is located. have.
따라서, 상기 쿨링팬(5)의 작동에 의해 외부 공기가 공기흡입구(3)를 통해 흡입되어 라디에이터(4)를 통과하면서 냉각수를 냉각시키게 되고, 라디에이터(4)를 통과한 공기는 엔진쪽으로 유동되어 엔진(1)을 냉각시키게 된다. Therefore, by the operation of the cooling fan 5, the outside air is sucked through the air intake port 3 to cool the cooling water while passing through the radiator 4, the air passing through the radiator 4 flows toward the engine The engine 1 is cooled down.
상기 쿨링팬(5)은 벨트(6)를 매개로 엔진(1)의 크랭크축(1a)의 구동풀리(2)에 결합되어 구동되고, 쿨링팬(5)의 회전속도는 라디에이터(4)를 통과하는 공기의 온도에 따라 2단계로 제어된다. 즉, 공기의 온도가 높은 경우에는 쿨링팬(5)의 회전속도가 빨라지며, 공기의 온도가 낮은 경우에는 쿨링팬의 회전속도가 느려지게 된다.The cooling fan 5 is coupled to the driving pulley 2 of the crankshaft 1a of the engine 1 via the belt 6 to be driven, and the rotational speed of the cooling fan 5 drives the radiator 4. It is controlled in two stages according to the temperature of the passing air. That is, when the temperature of the air is high, the rotational speed of the cooling fan 5 is increased, and when the air temperature is low, the rotational speed of the cooling fan is decreased.
그러나, 상기와 같은 종래의 버스용 냉각장치에 있어서, 상기 라디에이터(4) 및 쿨링팬(5)은 엔진룸에 횡방향으로 배치되는 바, 특히 여름철이나 압축천연가스 버스(CNG Bus)와 같이 엔진 발열량이 큰 경우 공기흡입량이 적기 때문에 냉각성능이 저하되는 문제점이 있었다.However, in the conventional bus cooling apparatus as described above, the radiator 4 and the cooling fan 5 are arranged in the engine room in the transverse direction, especially in the summer or in the engine such as a compressed natural gas bus (CNG Bus). When the calorific value is large, there is a problem that the cooling performance is lowered because the air suction amount is small.
이에 본 발명은 상기와 같은 문제점을 해결하기 위하여 안출된 것으로, 버스용 냉각장치의 라디에이터 및 쿨링팬 배치구조를 변경하고 이를 구동시키는 구동수단을 개선하여 흡입 공기량을 최대화함과 더불어 엔진의 동력소비를 저감시킬 수 있는 버스용 냉각장치를 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the above problems, by changing the radiator and cooling fan arrangement of the cooling device for buses and improving the driving means for driving the same to maximize the intake air amount and to increase the power consumption of the engine It is an object of the present invention to provide a cooling device for a bus that can be reduced.
상기와 같은 목적을 달성하기 위하여 본 발명의 냉각장치는, 버스 엔진룸의 일측면부에 형성된 공기흡입구와, 이 공기흡입구와 나란하도록 엔진룸 일측에서 공기흡입구와 인접하여 종방향으로 배치된 라디에이터와, 이 라디에이터의 일측부에 나란하게 배치되어 공기흡입구로부터 외부 공기를 강제 흡입하는 쿨링팬과, 엔진의 구동력을 전달받아 상기 쿨링팬을 구동시키는 동력전달수단을 포함하여 구성된다.그리고, 상기 동력전달수단은, 엔진의 크랭크축에 결합되어 구동되는 구동풀리 및 이 구동풀리와 벨트를 통해 연결되어 구동되는 아이들풀리와, 상기 쿨링팬의 회전축과 결합된 기어부와, 일단은 상기 아이들풀리와 단속적으로 결합되고 타단은 상기 기어부와 결합되어 아이들풀리의 구동력을 쿨링팬 기어부에 전달하여 구동시키는 전달축과, 상기 라디에이터의 일측에 설치되어 냉각수 온도를 감지하는 온도센서와, 상기 온도센서에 의해 감지된 냉각수 온도에 따라 상기 아이들풀리의 구동력을 전달축에 단속적으로 전달하는 클러치 어셈블리로 구성되는 것을 특징으로 한다.In order to achieve the above object, the cooling device of the present invention, the air inlet formed in one side surface portion of the bus engine room, a radiator disposed in the longitudinal direction adjacent to the air inlet on one side of the engine room to be parallel to the air intake, And a cooling fan disposed side by side at one side of the radiator to forcibly suction outside air from the air inlet, and a power transmission means for driving the cooling fan by receiving the driving force of the engine. Silver, a drive pulley coupled to the crankshaft of the engine is driven and the idle pulley is connected to the drive pulley and driven through the belt, the gear portion coupled to the rotating shaft of the cooling fan, one end is intermittently coupled to the idle pulley And the other end is coupled to the gear portion and the transmission shaft for driving the driving force of the idle pulley by transmitting to the cooling fan gear portion, And a clutch sensor installed at one side of the radiator to sense a coolant temperature, and a clutch assembly intermittently transmitting the driving force of the idle pulley to a transmission shaft according to the coolant temperature sensed by the temperature sensor.
삭제delete
이하, 본 발명에 따른 버스용 냉각장치의 일 실시예를 상세히 설명한다.Hereinafter, an embodiment of a bus cooling apparatus according to the present invention will be described in detail.
도 2는 본 발명에 따른 냉각장치 구성을 개략적으로 나타낸 버스의 엔진룸의 평면 구성도이고, 도 3은 도 2의 냉각장치의 전자석 클러치 구조를 나타낸 것으로, 버스의 후방측에 제공되는 엔진룸의 일측면부에 공기흡입구(3)가 형성되고, 이 공기흡입구(3)에 바로 내측에 냉각수가 유동하게 되는 라디에이터(4)가 종방향으로 연접하여 배치되며, 상기 라디에이터(4)의 바로 옆에는 라디에이터(4)와 나란하게 쿨링팬(5)이 설치된다.Figure 2 is a plan view of the engine room of the bus schematically showing the configuration of the cooling system according to the present invention, Figure 3 shows an electromagnet clutch structure of the cooling device of Figure 2, of the engine room provided on the rear side of the bus An air inlet 3 is formed at one side surface, and a radiator 4 in which a coolant flows to the inside of the air intake 3 is connected in the longitudinal direction, and a radiator is immediately adjacent to the radiator 4. The cooling fan 5 is installed side by side with (4).
상기 쿨링팬(5)의 회전축(51) 말단부에는 엔진(1)의 동력을 전달받아 구동됨으로써 쿨링팬(5)을 회전시키는 베벨기어 어셈블리(7)가 결합되어 있다.A bevel gear assembly 7 for rotating the cooling fan 5 is coupled to the distal end of the rotation shaft 51 of the cooling fan 5 by being driven by the power of the engine 1.
한편, 엔진(1)의 후단부에는 크랭크축에 결합되어 회전하는 구동풀리(2)가 설치되어 있으며, 이 구동풀리(2)는 쿨링팬(5) 후방측에 배치되는 아이들풀리(8)와 벨트(6)를 매개로 연결되어 아이들풀리(8)에 회전력을 전달하게 된다.On the other hand, the rear end of the engine 1 is provided with a drive pulley 2 which is coupled to the crankshaft and rotates, and this drive pulley 2 is provided with an idle pulley 8 arranged behind the cooling fan 5. It is connected via the belt 6 to transmit the rotational force to the idle pulley (8).
상기 아이들풀리(8)에는 전원이 인가됨으로써 자력을 갖게 되어 이 자력에 의해 동력을 단속적으로 전달하게 되는 클러치 어셈블리(9)가 설치되고, 이 클러치 어셈블리(9)는 유니버셜조인트 샤프트(10)에 의해 상기 베벨기어 어셈블리(7)의 한 베벨기어에 연결된다.The idle pulley 8 is provided with a clutch assembly 9 which has a magnetic force by applying power and intermittently transmits power by the magnetic force, and the clutch assembly 9 is installed by the universal joint shaft 10. It is connected to one bevel gear of the bevel gear assembly 7.
상기 클러치 어셈블리(9)는 전기력이 인가됨에 따라 자력을 갖게 되는 전자석 클러치(91)와, 상기 유니버셜조인트 샤프트(10) 끝단과 결합되어 상기 전자석 클러치(91)와 자력에 의해 결합하여 동력을 전달받는 클러치판(92)으로 이루어진다.The clutch assembly 9 is coupled to the end of the electro-magnetic clutch 91 and the universal joint shaft 10 to have a magnetic force as the electric force is applied to the electromagnetic clutch 91 and the magnetic force is coupled to receive power It consists of the clutch plate 92.
참고로, 도 3에서 참조부호 91a는 전기력에 의해 자력을 갖게 되는 전자석이고, 91b는 베어링, 91c는 온도센서(11)와 연결된 전선을 나타낸다.For reference, in FIG. 3, reference numeral 91a is an electromagnet having magnetic force by electric force, 91b is a bearing, and 91c is a wire connected to the temperature sensor 11.
한편, 상기 라디에이터(4)의 일측에는 라디에이터(4)를 유동하는 냉각수의 온도를 검출하여 상기 전자석 클러치(91)의 작동을 제어하는 온도센서(11)가 부착되어 있는데, 상기 온도센서(11)는 예컨대 냉각수 온도가 75℃에서 작동하게 된다.On the other hand, one side of the radiator 4 is attached with a temperature sensor 11 for detecting the temperature of the coolant flowing through the radiator 4 to control the operation of the electromagnet clutch 91, the temperature sensor 11 For example, the cooling water temperature will be operated at 75 ℃.
상기와 같이 구성된 냉각장치는 다음과 같이 작동하게 된다.The cooling device configured as described above is operated as follows.
차량이 주행중 엔진(1)이 가열되어 냉각수 온도가 75℃ 정도가 되면 서모스탯(thermostat)이 서서히 열리기 시작하여 대략 85℃ 정도가 되면 완전히 열려 라디에이터(4) 내부로 유입된다. 이와 동시에 라디에이터(4)의 온도센서(11)에 의해 전자석 클러치(91)에 전원이 인가되면서 전자석 클러치(91)와 클러치판(92)이 결합되어 동력전달 상태로 된다.When the engine 1 is heated while the vehicle is running and the coolant temperature is about 75 ° C., the thermostat gradually starts to open, and when the temperature is about 85 ° C., the thermostat is completely opened and flows into the radiator 4. At the same time, the power is applied to the electromagnet clutch 91 by the temperature sensor 11 of the radiator 4, the electromagnet clutch 91 and the clutch plate 92 are coupled to the power transmission state.
이렇게 되면, 엔진(1)에 결합된 구동풀리(2)와 함께 회동하게 되는 아이들풀리(8)의 회전력이 상기 클러치 어셈블리(9) 및 유니버셜조인트 샤프트(10)에 전달되고, 이에 따라 베벨기어 어셈블리(7)가 구동하여 쿨링팬(5)을 회전시키게 된다.In this case, the rotational force of the idle pulley 8 which is rotated together with the driving pulley 2 coupled to the engine 1 is transmitted to the clutch assembly 9 and the universal joint shaft 10, and thus the bevel gear assembly. (7) is driven to rotate the cooling fan (5).
따라서, 쿨링팬(5)의 회전에 의해 공기흡입구(3)를 통해 외부의 공기가 유입되면서 라디에이터(4)의 냉각수를 냉각시키게 되는데, 이 때 라디에이터(4)가 공기흡입구(3) 배치방향과 일치하게 됨으로써 뛰어난 냉각성능을 얻을 수 있게 된다.Therefore, as the outside air flows through the air intake port 3 by the rotation of the cooling fan 5, the cooling water of the radiator 4 is cooled, and the radiator 4 is disposed in the air intake port 3 direction. By matching, excellent cooling performance can be obtained.
이와 같이 냉각과정이 진행되면서 서서히 냉각수 온도가 하강하여 75℃에 이르게 되면, 라디에이터(4)의 온도센서(11)가 이를 감지하여 아이들풀리(8)의 전자석 클러치(91)에 공급되던 전원을 차단하게 된다.As the cooling process progresses as described above, when the coolant temperature gradually decreases to 75 ° C., the temperature sensor 11 of the radiator 4 senses this to cut off the power supplied to the electromagnet clutch 91 of the idle pulley 8. Done.
이에 따라 전자석 클러치(91)는 자력을 상실하게 되어 클러치판(92)이 전자석 클러치(91)와 분리되며 유니버셜조인트 샤프트(10)로의 동력 전달이 차단되고, 쿨링팬(5)은 작동을 멈추게 된다.Accordingly, the electromagnet clutch 91 loses its magnetic force, the clutch plate 92 is separated from the electromagnet clutch 91, power transmission to the universal joint shaft 10 is blocked, and the cooling fan 5 stops operating. .
따라서, 냉각이 필요없을 경우에는 쿨링팬(5)으로의 동력전달이 차단되므로 엔진의 소요동력이 낭비되는 것이 방지된다.Therefore, when the cooling is not necessary, power transmission to the cooling fan 5 is blocked, so that the required power of the engine is prevented from being wasted.
이상에서와 같이 본 발명에 따르면, 라디에이터 및 쿨링팬이 공기흡입구 형성방향과 일치하는 종방향으로 배치됨으로써 냉각성능이 향상되고 팬 소음이 감소되는 효과를 얻는다.As described above, according to the present invention, since the radiator and the cooling fan are disposed in the longitudinal direction coinciding with the air inlet formation direction, the cooling performance is improved and the fan noise is reduced.
이와 더불어, 냉각이 필요치 않을 경우에는 쿨링팬으로 전달되는 동력이 차단되므로 불필요한 엔진 동력 소요를 방지할 수 있게 되고, 이에 따라 연료도 절약할 수 있게 된다.In addition, when cooling is not necessary, power transmitted to the cooling fan is cut off, so that unnecessary engine power consumption can be prevented, thereby saving fuel.
도 1은 종래의 버스용 냉각장치 구성을 나타낸 평면 구성도,1 is a plan view showing the configuration of a conventional cooling device for a bus;
도 2는 본 발명의 버스용 냉각장치 구성을 나타낸 평면 구성도,2 is a plan view showing the configuration of a cooling apparatus for a bus of the present invention;
도 3은 도 2의 냉각장치의 전자석 클러치 구조를 나타낸 요부 단면도이다.<도면의 주요부분의 참조부호에 대한 설명>Fig. 3 is a sectional view showing main parts of the electromagnet clutch structure of the cooling device of Fig. 2.
삭제delete
1 - 엔진 2 - 구동풀리1-Engine 2-Drive Pulley
3 - 공기흡입구 4 - 라디에이터 3-Air intake 4-Radiator
5 - 쿨링팬 6 - 벨트 5-Fan 6-Belt
7 - 베벨기어 어셈블리 8 - 아이들풀리7-Bevel Gear Assembly 8-Idle Pulley
9 - 클러치 어셈블리 91 - 전자석 클러치9-clutch assembly 91-electromagnet clutch
92 - 클러치판 10 - 유니버셜조인트 샤프트92-clutch plate 10-universal joint shaft
11 - 온도센서11-temperature sensor
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2001-0050618A KR100482046B1 (en) | 2001-08-22 | 2001-08-22 | Cooling System for Bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2001-0050618A KR100482046B1 (en) | 2001-08-22 | 2001-08-22 | Cooling System for Bus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| KR20030016842A KR20030016842A (en) | 2003-03-03 |
| KR100482046B1 true KR100482046B1 (en) | 2005-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| KR10-2001-0050618A Expired - Fee Related KR100482046B1 (en) | 2001-08-22 | 2001-08-22 | Cooling System for Bus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101596681B1 (en) * | 2010-08-11 | 2016-02-24 | 현대자동차주식회사 | Rotatoryforce transmission apparatus of cooling fan for automobile |
| CN111845323A (en) * | 2020-08-27 | 2020-10-30 | 哈尔滨北方防务装备股份有限公司 | A cooling fan drive device for a double tracked vehicle |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5672214A (en) * | 1979-11-16 | 1981-06-16 | Hitachi Ltd | Cooling device of internal combustion engine |
| KR19980053092A (en) * | 1996-12-26 | 1998-09-25 | 박병재 | Turbocharger chiller |
| KR19990038298U (en) * | 1998-03-23 | 1999-10-25 | 정몽규 | Cooling fan drive clutch structure using electric device |
| JP2000186552A (en) * | 1998-12-24 | 2000-07-04 | Aisin Seiki Co Ltd | Vehicle cooling system |
-
2001
- 2001-08-22 KR KR10-2001-0050618A patent/KR100482046B1/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5672214A (en) * | 1979-11-16 | 1981-06-16 | Hitachi Ltd | Cooling device of internal combustion engine |
| KR19980053092A (en) * | 1996-12-26 | 1998-09-25 | 박병재 | Turbocharger chiller |
| KR19990038298U (en) * | 1998-03-23 | 1999-10-25 | 정몽규 | Cooling fan drive clutch structure using electric device |
| JP2000186552A (en) * | 1998-12-24 | 2000-07-04 | Aisin Seiki Co Ltd | Vehicle cooling system |
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