JPH05202748A - Cooling device for water cooled internal combustion engine of vehicle - Google Patents

Cooling device for water cooled internal combustion engine of vehicle

Info

Publication number
JPH05202748A
JPH05202748A JP1363892A JP1363892A JPH05202748A JP H05202748 A JPH05202748 A JP H05202748A JP 1363892 A JP1363892 A JP 1363892A JP 1363892 A JP1363892 A JP 1363892A JP H05202748 A JPH05202748 A JP H05202748A
Authority
JP
Japan
Prior art keywords
refrigerant condenser
radiator
vehicle
cooling
opening
Prior art date
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.)
Granted
Application number
JP1363892A
Other languages
Japanese (ja)
Other versions
JP3079735B2 (en
Inventor
Akihito Tanaka
章仁 田中
Sumio Susa
澄男 須佐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
NipponDenso Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Priority to JP04013638A priority Critical patent/JP3079735B2/en
Publication of JPH05202748A publication Critical patent/JPH05202748A/en
Application granted granted Critical
Publication of JP3079735B2 publication Critical patent/JP3079735B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PURPOSE:To improve the loading performance of a cooling device, improve assembling workability, and prevent the reliability degradation of a vehicle due to the malfunction of a brake mechanism. CONSTITUTION:A bypass circuit 9 in which cooling air flows bypassing a refrigerant compressor 3 is formed in the air duct 5 provided around the refrigerant condenser 3 and the radiator 2. A closing damper 10 to close this bypass circuit 9 is driven to the side to close the bypass circuit 9 by a negative pressure type actuator 11 and driven to the side to open the bypass circuit 9 by the elastic force of a spring 12. All of the refrigerant condenser 3, closing damper 10, negative pressure type actuator 11, and spring 12 are contained in the air duct 5 and assembled to the air duct 5.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、冷房装置を搭載した車
両において、冷媒凝縮器およびラジエータへの冷却風路
を制御する車両用水冷式内燃機関の冷却装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device for a water-cooled internal combustion engine for a vehicle, which controls a cooling air passage to a refrigerant condenser and a radiator in a vehicle equipped with a cooling device.

【0002】[0002]

【従来の技術】従来より、冷房装置を搭載した車両で
は、内燃機関(以下エンジンと呼ぶ)の熱負荷の状態に
対応して、冷房装置の冷媒凝縮器およびエンジン冷却水
を冷却するラジエータへの冷却風の流れを制御する冷却
装置が提案されている(特開平3−233128号公報
参照)。この冷却装置は、冷却風を導く導風ダクト、導
風ダクト内の冷却風路を制御するダンパ機構、このダン
パ機構を駆動するアクチュエータ等より構成され、例え
ばエンジンの冷却水温度が大きく上昇した場合には、冷
媒凝縮器を通過した冷却風とともに、冷媒凝縮器を迂回
する冷却風をラジエータに導くようにダンパ機構を駆動
する。これにより、冷房能力に影響を与えることなく、
ラジエータの冷却能力を高めて冷却水温を適正に保つも
のである。
2. Description of the Related Art Conventionally, in a vehicle equipped with a cooling device, a refrigerant condenser of the cooling device and a radiator for cooling the engine cooling water are supplied to the cooling device in accordance with the heat load of an internal combustion engine (hereinafter referred to as an engine). A cooling device for controlling the flow of cooling air has been proposed (see Japanese Patent Laid-Open No. 3-233128). This cooling device is composed of an air guide duct that guides cooling air, a damper mechanism that controls the cooling air passage in the air guide duct, an actuator that drives this damper mechanism, and the like. The damper mechanism is driven so that the cooling air that has passed through the refrigerant condenser and the cooling air that bypasses the refrigerant condenser are guided to the radiator. As a result, without affecting the cooling capacity,
The cooling capacity of the radiator is increased to keep the cooling water temperature proper.

【0003】[0003]

【発明が解決しようとする課題】ところが、近年の車両
の高級化に対応して搭載される補機類の増加、および車
体デザインのスラントノーズ化等に伴って、エンジンル
ーム内が過密化する傾向にあり、上記冷却装置の搭載ス
ペースを確保することが難しくなりつつある。また、冷
媒凝縮器が冷却装置とは別にブラケット等の部品を用い
て車体へ取付けられているため、冷却装置の搭載に伴っ
て、組付け作業工数の増加を招くという課題を有してい
た。さらには、ダンパ機構やアクチュエータ等の制御機
構の故障によって、冷媒凝縮器を迂回する冷却風路が閉
じられた場合には、ラジエータの冷却能力が低下するこ
とからエンジン冷却水温が上昇し、車両の信頼性低下を
招くことになる。本発明は、上記事情に基づいて成され
たもので、その第1の目的は、冷却装置の搭載性向上と
ともに、組付け作業工数の低減を図ることにあり、第2
の目的は、制御機構の作動不良に伴う車両の信頼性低下
を防止することにある。
However, there is a tendency for the engine room to become overcrowded due to an increase in the number of auxiliary equipment mounted in response to the recent trend toward higher grade vehicles and the slant nose of vehicle body designs. Therefore, it is becoming difficult to secure a mounting space for the cooling device. In addition, since the refrigerant condenser is attached to the vehicle body by using a component such as a bracket separately from the cooling device, there is a problem that the number of assembling work steps is increased with the mounting of the cooling device. Furthermore, when the cooling air passage bypassing the refrigerant condenser is closed due to a failure of a control mechanism such as a damper mechanism or an actuator, the cooling capacity of the radiator is lowered and the engine cooling water temperature rises, which causes This leads to a decrease in reliability. The present invention has been made based on the above circumstances. A first object of the present invention is to improve the mountability of a cooling device and reduce the number of assembly work steps.
The purpose of is to prevent the reliability of the vehicle from being lowered due to a malfunction of the control mechanism.

【0004】[0004]

【課題を解決するための手段】本発明は、上記目的を達
成するために、請求項1では、冷凍サイクルの冷媒凝縮
器と、この冷媒凝縮器より車両進行方向の後方に配され
たラジエータと、前記冷媒凝縮器側から前記ラジエータ
へ冷却風を導く導風ダクトと、この導風ダクト内で前記
ラジエータに向かう冷却風が前記冷媒凝縮器を迂回して
流れるように形成された迂回路を開閉する迂回路開閉手
段と、この迂回路開閉手段を駆動する駆動手段とを備え
た車両用水冷式内燃機関の冷却装置において、前記冷媒
凝縮器、前記迂回路開閉手段、および前記駆動手段は前
記導風ダクト内に収納されて前記導風ダクトに一体に組
付けられたことを技術的手段とする。
In order to achieve the above object, the present invention provides, in claim 1, a refrigerant condenser of a refrigeration cycle, and a radiator arranged behind the refrigerant condenser in the vehicle traveling direction. , An air guide duct that guides cooling air from the refrigerant condenser side to the radiator, and a detour formed so that the cooling air flowing toward the radiator in the air guide duct bypasses the refrigerant condenser. In a cooling device for a water-cooled internal combustion engine for a vehicle, comprising: a bypass opening / closing means for driving the bypass opening / closing means; and a driving means for driving the bypass opening / closing means, the refrigerant condenser, the bypass opening / closing means, and the driving means include The technical means is to be housed in the wind duct and integrally assembled with the wind guide duct.

【0005】また、請求項2では、冷凍サイクルの冷媒
凝縮器と、この冷媒凝縮器より車両進行方向の後方に配
されたラジエータと、前記冷媒凝縮器側から前記ラジエ
ータへ冷却風を導く導風ダクトと、この導風ダクト内で
前記ラジエータに向かう冷却風が前記冷媒凝縮器を迂回
して流れるように形成された迂回路を開閉する迂回路開
閉手段と、この迂回路開閉手段を駆動する駆動手段とを
備えた車両用水冷式内燃機関の冷却装置において、前記
駆動手段は負圧の供給を受けて前記迂回路開閉手段を前
記迂回路を閉じる側へ駆動する負圧式アクチュエータ
と、弾性力によって前記迂回路開閉手段を前記迂回路を
開く側へ駆動する弾性駆動装置とから成ることを技術的
手段とする。
Further, according to a second aspect of the present invention, a refrigerant condenser of the refrigeration cycle, a radiator disposed behind the refrigerant condenser in the traveling direction of the vehicle, and an air guide for guiding cooling air from the refrigerant condenser side to the radiator. A duct, a detour opening / closing means for opening / closing a detour formed so that the cooling air flowing toward the radiator in the air guiding duct bypasses the refrigerant condenser, and a drive for driving the detour opening / closing means. In a cooling device for a water-cooled internal combustion engine for a vehicle, the driving means receives a negative pressure and drives the detour opening / closing means to a side to close the detour, and an elastic force. The technical means comprises an elastic drive device for driving the bypass opening / closing means to the side of opening the bypass.

【0006】[0006]

【作用および発明の効果】上記構成より成る本発明は、
冷媒凝縮器、迂回路開閉手段、および駆動手段が導風ダ
クト内に収納されることから、車体への搭載性が向上す
る。また、冷媒凝縮器を導風ダクト内に組付けることに
より、従来のように、冷媒凝縮器を車体へ搭載するため
の部品類を削減することができるとともに、組付け作業
工数の低減を図ることができる。また、迂回路開閉手段
は、迂回路を閉じる側へは負圧式アクチュエータによっ
て駆動されるが、迂回路を開く側へは弾性駆動装置の弾
性力によって駆動される。従って、もし負圧式アクチュ
エータが故障した場合でも、迂回路開閉手段が迂回路を
開く側へ駆動されるため、迂回路を流れてラジエータへ
導かれる冷却風を得ることができる。その結果、ラジエ
ータの冷却能力を確保することができ、エンジン冷却水
温の上昇を抑えて、車両の信頼性低下を防止することが
できる。
The present invention having the above-mentioned structure has the following features.
Since the refrigerant condenser, the bypass opening / closing means, and the driving means are housed in the air duct, the mountability on the vehicle body is improved. Also, by assembling the refrigerant condenser in the air duct, it is possible to reduce the number of parts for mounting the refrigerant condenser on the vehicle body as in the conventional case and to reduce the number of assembling steps. You can The detour opening / closing means is driven by the negative pressure type actuator to the side closing the detour, but is driven to the side opening the detour by the elastic force of the elastic drive device. Therefore, even if the negative pressure type actuator fails, the bypass opening / closing means is driven to the side that opens the bypass, so that the cooling air that flows through the bypass and is guided to the radiator can be obtained. As a result, the cooling capacity of the radiator can be secured, the rise in engine cooling water temperature can be suppressed, and the reliability of the vehicle can be prevented from decreasing.

【0007】[0007]

【実施例】次に、本発明の一実施例を図1ないし図3を
基に説明する。図1はエンジンルームに搭載された冷却
装置の側面断面図、図2は冷却装置の正面図である。車
両のエンジンルーム内には、図1に示すように、水冷式
エンジン1の前方に、エンジン冷却水を冷却するための
ラジエータ2が設置され、このラジエータ2の前方に
は、冷凍サイクルの冷媒凝縮器3が設置されている。ラ
ジエータ2および冷媒凝縮器3は、車両の進行方向に向
けて直列的に配置されラジエータ2の後方(エンジン1
との間)に設置されたクーリングファン4の送風および
車両の走行に伴って発生する走行風により冷却される。
ラジエータ2から冷媒凝縮器3にかけての周囲には、エ
ンジン1側からの熱風の回り込みを防止するとともに、
冷却風を効果的に導くための導風ダクト5が設けられて
いる。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a side sectional view of a cooling device mounted in an engine room, and FIG. 2 is a front view of the cooling device. In the engine room of the vehicle, as shown in FIG. 1, a radiator 2 for cooling engine cooling water is installed in front of the water-cooled engine 1, and in front of the radiator 2, refrigerant condensation of a refrigeration cycle is performed. The vessel 3 is installed. The radiator 2 and the refrigerant condenser 3 are arranged in series in the traveling direction of the vehicle and are located behind the radiator 2 (engine 1
(Between) and the cooling fan 4 installed between the cooling fan 4 and the traveling wind generated by the traveling of the vehicle.
The hot air from the engine 1 side is prevented from flowing into the surroundings from the radiator 2 to the refrigerant condenser 3, and
An air guide duct 5 for effectively guiding the cooling air is provided.

【0008】この導風ダクト5は、後方側(図1の右
側)左右の下部に脚部5a、上部に固定部5bを備え、
脚部5aがラジエータ2の下側タンク2aの側面より突
設された支持部6に嵌合され、固定部5bがラジエータ
2の上側タンク2bにボルト7によって固定されること
で、ラジエータ2に組付けられている。また、導風ダク
ト5の前方側内周部には、図2に示すように、冷媒凝縮
器3を組付けるためのステー5cが設けられており、冷
媒凝縮器3は、このステー5cにボルト8によって固定
されている。
This air guide duct 5 is provided with leg portions 5a on the left and right lower portions on the rear side (right side in FIG. 1) and fixing portions 5b on the upper portion.
The leg portion 5a is fitted to the support portion 6 projecting from the side surface of the lower tank 2a of the radiator 2, and the fixing portion 5b is fixed to the upper tank 2b of the radiator 2 by the bolt 7, so that the radiator 2 is assembled to the radiator 2. It is attached. Further, as shown in FIG. 2, a stay 5c for assembling the refrigerant condenser 3 is provided on the front inner peripheral portion of the air guide duct 5, and the refrigerant condenser 3 is bolted to the stay 5c. It is fixed by 8.

【0009】この導風ダクト5には、冷媒凝縮器3を組
付けた状態で、冷媒凝縮器3の下側に、冷却風の一部が
冷媒凝縮器3を迂回して流れるための迂回路9が形成さ
れ、その迂回路9は、導風ダクト5に回動自在に支持さ
れた開閉ダンパ10(迂回路開閉手段)によって開閉さ
れる。開閉ダンパ10は、本発明の駆動手段を成す負圧
式アクチュエータ11およびスプリング12(本発明の
弾性駆動装置)によって駆動される。負圧式アクチュエ
ータ11は、負圧の供給を受けると、開閉ダンパ10に
連結されたロッド13を上方へ駆動して、開閉ダンパ1
0を迂回路9を閉じる側(図1の二点鎖線で示す位置)
へ駆動する。負圧式アクチュエータ11に作用する負圧
は、負圧源14(マニホルド負圧等)との間に設けられ
た制御バルブ15によってコントロールされる。この制
御バルブ15は、エンジン1の運転状態を制御するエン
ジンコントロールコンピュータ(図示しない)によって
開閉制御され、開くことで負圧式アクチュエータ11に
負圧を供給し、閉じることで負圧の供給を停止する。
With the refrigerant condenser 3 installed in the air guide duct 5, a detour path is provided below the refrigerant condenser 3 for allowing a part of the cooling air to flow around the refrigerant condenser 3. 9 is formed, and the detour 9 is opened / closed by an opening / closing damper 10 (detour opening / closing means) rotatably supported by the air duct 5. The opening / closing damper 10 is driven by a negative pressure type actuator 11 and a spring 12 (elastic drive device of the present invention) which form the drive means of the present invention. When the negative pressure type actuator 11 receives the supply of negative pressure, the negative pressure type actuator 11 drives the rod 13 connected to the opening / closing damper 10 upward so as to open / close the opening / closing damper 1.
The side where 0 closes the detour 9 (the position shown by the chain double-dashed line in FIG. 1)
Drive to. The negative pressure acting on the negative pressure type actuator 11 is controlled by a control valve 15 provided between the negative pressure source 14 (manifold negative pressure and the like). The control valve 15 is controlled to be opened and closed by an engine control computer (not shown) that controls the operating state of the engine 1. When opened, the negative pressure actuator 11 is supplied with negative pressure, and when closed, the supply of negative pressure is stopped. ..

【0010】また、制御バルブ15と負圧源14との間
には逆止弁16が設けられている。この逆止弁16は、
負圧式アクチュエータ11が開閉ダンパ10を駆動する
のに必要な負圧を維持するもので、負圧源14の負圧の
変動(例えば、山路等でアクセルを踏んだ時)が生じた
場合でも能力不足となるのを防止する。この負圧式アク
チュエータ11は、図1に示すように、導風ダクト5内
のラジエータ2と冷媒凝縮器3との間に配置されて、導
風ダクト5に設けられたステー5dにボルト17によっ
て固定されている。
A check valve 16 is provided between the control valve 15 and the negative pressure source 14. This check valve 16
The negative pressure type actuator 11 maintains the negative pressure required to drive the opening / closing damper 10, and the ability even when the negative pressure of the negative pressure source 14 fluctuates (for example, when the accelerator is stepped on a mountain road). Prevent shortages. As shown in FIG. 1, the negative pressure type actuator 11 is arranged between the radiator 2 in the air guide duct 5 and the refrigerant condenser 3 and fixed to the stay 5d provided in the air guide duct 5 by the bolts 17. Has been done.

【0011】スプリング12は、ロッド13の移動方向
(図1上下方向)において、下端が冷媒凝縮器組付け用
のステー5cに固定されて、上端がロッド13に固定さ
れており、負圧式アクチュエータ11によってロッド1
3が上方へ駆動されると、ロッド13とともに上端側が
上方へ移動して伸長し、自身の弾性力がロッド13を下
方へ押し下げる方向に作用する。従って、負圧式アクチ
ュエータ11への負圧の供給が停止されると、ロッド1
3を上方へ引き上げる力が消滅することから、スプリン
グ12の弾性力によってロッド13が下方へ押し下げら
れる。その結果、開閉ダンパ10は、図1の実線位置で
示すように、迂回路9を開く側に駆動される。
The spring 12 has a lower end fixed to the stay 5c for assembling the refrigerant condenser and an upper end fixed to the rod 13 in the moving direction of the rod 13 (vertical direction in FIG. 1). By rod 1
When 3 is driven upward, the upper end side moves upward together with the rod 13 and extends, and its own elastic force acts in the direction of pushing down the rod 13. Therefore, when the supply of the negative pressure to the negative pressure type actuator 11 is stopped, the rod 1
Since the force for pulling 3 upwards disappears, the elastic force of the spring 12 pushes the rod 13 downward. As a result, the opening / closing damper 10 is driven to open the detour 9 as shown by the solid line position in FIG.

【0012】次に、本実施例の作動を図3に示すフロー
チャートを基に説明する。まず、エンジン1始動後(ス
テップS1)、空気調和装置を作動させるためのエアコ
ンスイッチ(図示しない)がオンされたか否かを判断す
る(ステップS2)。エアコンスイッチがオンされてな
い場合(NO)には、エンジン1の冷却水温度Twが第
1設定温度Tw1 (80℃)より高いか否かを判断する
(ステップS6)。そして、冷却水温度Twが第1設定
温度Tw1 より低い場合(NO)には、制御バルブ15
を開いて負圧式アクチュエータ11を作動させ、開閉ダ
ンパ10を迂回路9を閉じる側へ駆動し(ステップS
4)、エンジン1の暖機を促進させる。また、冷却水温
度Twが第1設定温度Tw1 より高い場合(YES)に
は、開閉ダンパ10が迂回路9を開く(ステップS5)
ことにより、冷却水温度Twの低下を図る。上記ステッ
プS2において、エアコンスイッチがオンされた場合
(YES)には、エンジン1の冷却水温度Twが第2設
定温度Tw2 (100℃)より低いか否かを判断する
(ステップS3)。そして、冷却水温度Twが第2設定
温度Tw2 以上の場合(NO)には、制御バルブ15を
閉じて、負圧式アクチュエータ11への負圧の供給を停
止することにより、スプリング12の弾性力によって開
閉ダンパ10を迂回路9を開く側へ駆動する(ステップ
S5)。これにより、冷却風の一部は、冷媒凝縮器3を
通過することなく迂回路9を通って大気温のまま直接ラ
ジエータ2に導かれる。その結果、すべての冷却風が冷
媒凝縮器3を通過した場合と比較して、ラジエータ2に
当たる冷却風の温度が低下することから、ラジエータ2
の放熱特性が向上して冷却水温度Twを低下させること
ができる。
Next, the operation of this embodiment will be described with reference to the flow chart shown in FIG. First, after starting the engine 1 (step S1), it is determined whether or not an air conditioner switch (not shown) for operating the air conditioner is turned on (step S2). When the air conditioner switch is not turned on (NO), it is determined whether the cooling water temperature Tw of the engine 1 is higher than the first set temperature Tw1 (80 ° C) (step S6). When the cooling water temperature Tw is lower than the first set temperature Tw1 (NO), the control valve 15
To operate the negative pressure type actuator 11 to drive the opening / closing damper 10 to the side of closing the bypass 9 (step S
4) Promote warm-up of the engine 1. When the cooling water temperature Tw is higher than the first set temperature Tw1 (YES), the opening / closing damper 10 opens the bypass 9 (step S5).
As a result, the cooling water temperature Tw is reduced. When the air conditioner switch is turned on in step S2 (YES), it is determined whether the cooling water temperature Tw of the engine 1 is lower than the second set temperature Tw2 (100 ° C.) (step S3). When the cooling water temperature Tw is equal to or higher than the second set temperature Tw2 (NO), the control valve 15 is closed to stop the supply of the negative pressure to the negative pressure type actuator 11, so that the elastic force of the spring 12 is applied. The opening / closing damper 10 is driven to the side where the detour 9 is opened (step S5). As a result, a part of the cooling air is guided to the radiator 2 directly at the atmospheric temperature through the bypass 9 without passing through the refrigerant condenser 3. As a result, the temperature of the cooling air hitting the radiator 2 is lower than that in the case where all the cooling air passes through the refrigerant condenser 3, so that the radiator 2
It is possible to improve the heat radiation characteristics of the above and reduce the cooling water temperature Tw.

【0013】上記ステップS3において、冷却水温度T
wが第2設定温度Tw2 より低い場合(YES)には、
制御バルブ15を開いて負圧式アクチュエータ11を作
動させ、開閉ダンパ10を迂回路9を閉じる側へ駆動す
る(ステップS4)。このように、冷却水温度Twが第
2設定温度Tw2 より低く、オーバヒートの心配がない
場合には、開閉ダンパ10によって迂回路9が閉じら
れ、すべての冷却風が冷媒凝縮器3を通過するため、冷
媒凝縮器3の放熱特性が良好となり、冷房能力の向上を
図ることができる。本実施例の冷却装置は、冷媒凝縮器
3、負圧式アクチュエータ11、開閉ダンパ10を導風
ダクト5内に収納して導風ダクト5に一体に組付け、さ
らにその導風ダクト5をラジエータ2に組付けたことに
より、車両への搭載性を大幅に向上させることができ
る。また、冷媒凝縮器3を単独で車両へ搭載していた従
来の場合と比較して、組付け作業工数の低減を図ること
ができる。
In step S3, the cooling water temperature T
When w is lower than the second set temperature Tw2 (YES),
The control valve 15 is opened, the negative pressure type actuator 11 is operated, and the opening / closing damper 10 is driven to the side where the bypass 9 is closed (step S4). As described above, when the cooling water temperature Tw is lower than the second set temperature Tw2 and there is no fear of overheating, the bypass 9 is closed by the opening / closing damper 10 and all the cooling air passes through the refrigerant condenser 3. Therefore, the heat dissipation characteristics of the refrigerant condenser 3 are improved, and the cooling capacity can be improved. In the cooling device of the present embodiment, the refrigerant condenser 3, the negative pressure type actuator 11, and the opening / closing damper 10 are housed in the air guide duct 5 and assembled integrally with the air guide duct 5, and the air guide duct 5 is further attached to the radiator 2. By assembling it on the vehicle, the mountability on the vehicle can be significantly improved. Further, the number of assembling work steps can be reduced as compared with the conventional case where the refrigerant condenser 3 is independently mounted on the vehicle.

【0014】そして、開閉ダンパ10は、迂回路9を閉
じる側へは負圧式アクチュエータ11によって駆動され
るが、迂回路9を開く側へはスプリング12の弾性力に
よって駆動される。従って、負圧式アクチュエータ11
の故障や負圧の供給停止等の不具合が生じた場合でも、
開閉ダンパ10が迂回路9を開く側へ駆動されるため、
迂回路9を流れてラジエータ2へ導かれる大気温の冷却
風を確保することができる。その結果、エンジン冷却水
温の上昇によるオーバヒートを防止することができる。
The opening / closing damper 10 is driven by the negative pressure type actuator 11 to the side closing the bypass 9, but is driven to the side opening the bypass 9 by the elastic force of the spring 12. Therefore, the negative pressure type actuator 11
In case of troubles such as
Since the opening / closing damper 10 is driven to the side that opens the detour 9,
It is possible to secure the cooling air of the atmospheric temperature that flows through the bypass 9 and is guided to the radiator 2. As a result, it is possible to prevent overheating due to an increase in engine cooling water temperature.

【図面の簡単な説明】[Brief description of drawings]

【図1】エンジンルームに搭載された冷却装置の側面断
面図である。
FIG. 1 is a side sectional view of a cooling device mounted in an engine room.

【図2】冷却装置の正面図である。FIG. 2 is a front view of a cooling device.

【図3】本実施例の作動を示すフローチャートである。FIG. 3 is a flowchart showing the operation of this embodiment.

【符号の説明】[Explanation of symbols]

2 ラジエータ 3 冷媒凝縮器 5 導風ダクト 9 迂回路 10 開閉ダンパ(迂回路開閉手段) 11 負圧式アクチュエータ 12 スプリング(弾性駆動装置) 2 Radiator 3 Refrigerant condenser 5 Air duct 9 Detour 10 Opening / closing damper (detour opening / closing means) 11 Negative pressure type actuator 12 Spring (elastic drive device)

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】冷凍サイクルの冷媒凝縮器と、この冷媒凝
縮器より車両進行方向の後方に配されたラジエータと、
前記冷媒凝縮器側から前記ラジエータへ冷却風を導く導
風ダクトと、この導風ダクト内で前記ラジエータに向か
う冷却風が前記冷媒凝縮器を迂回して流れるように形成
された迂回路を開閉する迂回路開閉手段と、この迂回路
開閉手段を駆動する駆動手段とを備えた車両用水冷式内
燃機関の冷却装置において、 前記冷媒凝縮器、前記迂回路開閉手段、および前記駆動
手段は、前記導風ダクト内に収納されて、前記導風ダク
トに一体に組付けられたことを特徴とする車両用水冷式
内燃機関の冷却装置。
1. A refrigerant condenser of a refrigeration cycle, and a radiator disposed behind the refrigerant condenser in a vehicle traveling direction,
An air guide duct that guides cooling air from the refrigerant condenser side to the radiator, and a bypass formed so that the cooling air flowing toward the radiator in the air guide duct bypasses the refrigerant condenser. A cooling device for a water-cooled internal combustion engine for a vehicle, comprising: a detour opening / closing means and a driving means for driving the detour opening / closing means, wherein the refrigerant condenser, the detour opening / closing means, and the driving means include: A cooling device for a water-cooled internal combustion engine for a vehicle, wherein the cooling device is housed in a wind duct and integrally assembled with the wind duct.
【請求項2】冷凍サイクルの冷媒凝縮器と、この冷媒凝
縮器より車両進行方向の後方に配されたラジエータと、
前記冷媒凝縮器側から前記ラジエータへ冷却風を導く導
風ダクトと、この導風ダクト内で前記ラジエータに向か
う冷却風が前記冷媒凝縮器を迂回して流れるように形成
された迂回路を開閉する迂回路開閉手段と、この迂回路
開閉手段を駆動する駆動手段とを備えた車両用水冷式内
燃機関の冷却装置において、 前記駆動手段は、負圧の供給を受けて前記迂回路開閉手
段を前記迂回路を閉じる側へ駆動する負圧式アクチュエ
ータと、弾性力によって前記迂回路開閉手段を前記迂回
路を開く側へ駆動する弾性駆動装置とから成ることを特
徴とする車両用水冷式内燃機関の冷却装置。
2. A refrigerant condenser of a refrigeration cycle, and a radiator arranged behind the refrigerant condenser in the vehicle traveling direction.
An air guide duct that guides cooling air from the refrigerant condenser side to the radiator, and a bypass formed in the air guide duct so that the cooling air flowing toward the radiator bypasses the refrigerant condenser. In a cooling device for a water-cooled internal combustion engine for a vehicle, comprising: a detour opening / closing means and a driving means for driving the detour opening / closing means, wherein the driving means receives the supply of a negative pressure and opens the detour opening / closing means. A cooling system for a water-cooled internal combustion engine for a vehicle, comprising: a negative pressure type actuator for driving the bypass to the side to close the bypass and an elastic drive device for driving the bypass opening / closing means to the side to open the bypass by elastic force. apparatus.
JP04013638A 1992-01-29 1992-01-29 Cooling system for water-cooled internal combustion engine for vehicles Expired - Fee Related JP3079735B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP04013638A JP3079735B2 (en) 1992-01-29 1992-01-29 Cooling system for water-cooled internal combustion engine for vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP04013638A JP3079735B2 (en) 1992-01-29 1992-01-29 Cooling system for water-cooled internal combustion engine for vehicles

Publications (2)

Publication Number Publication Date
JPH05202748A true JPH05202748A (en) 1993-08-10
JP3079735B2 JP3079735B2 (en) 2000-08-21

Family

ID=11838781

Family Applications (1)

Application Number Title Priority Date Filing Date
JP04013638A Expired - Fee Related JP3079735B2 (en) 1992-01-29 1992-01-29 Cooling system for water-cooled internal combustion engine for vehicles

Country Status (1)

Country Link
JP (1) JP3079735B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5720341A (en) * 1994-04-12 1998-02-24 Showa Aluminum Corporation Stacked-typed duplex heat exchanger
DE102006045421A1 (en) * 2006-09-26 2008-04-03 Volkswagen Ag Cooling air duct through cooler package for use in motor vehicle, has air conducting device with movable cooling air flap that opens or blocks bypass that is arranged parallel to heat exchanger, based on arrangement and cooling air speed
JP2010084723A (en) * 2008-10-02 2010-04-15 Honda Motor Co Ltd Cooling apparatus for vehicle engine
JP2014500824A (en) * 2010-11-15 2014-01-16 エムシーアイ(ミラー コントロールズ インターナショナル)ネザーランド ベー.フェー. Adjusting device for air inlet, method for adjusting air inlet using the adjusting device, and automobile provided with air inlet having the adjusting device
WO2015129348A1 (en) * 2014-02-27 2015-09-03 カルソニックカンセイ株式会社 Cooling module

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5720341A (en) * 1994-04-12 1998-02-24 Showa Aluminum Corporation Stacked-typed duplex heat exchanger
DE102006045421A1 (en) * 2006-09-26 2008-04-03 Volkswagen Ag Cooling air duct through cooler package for use in motor vehicle, has air conducting device with movable cooling air flap that opens or blocks bypass that is arranged parallel to heat exchanger, based on arrangement and cooling air speed
JP2010084723A (en) * 2008-10-02 2010-04-15 Honda Motor Co Ltd Cooling apparatus for vehicle engine
JP2014500824A (en) * 2010-11-15 2014-01-16 エムシーアイ(ミラー コントロールズ インターナショナル)ネザーランド ベー.フェー. Adjusting device for air inlet, method for adjusting air inlet using the adjusting device, and automobile provided with air inlet having the adjusting device
WO2015129348A1 (en) * 2014-02-27 2015-09-03 カルソニックカンセイ株式会社 Cooling module

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