JP2007083861A

JP2007083861A - Cooling system for vehicle

Info

Publication number: JP2007083861A
Application number: JP2005274829A
Authority: JP
Inventors: Akito Mitsui; 昭人三井; Hiroshi Sando; 博司山洞
Original assignee: Nissan Motor Co Ltd
Current assignee: Nissan Motor Co Ltd
Priority date: 2005-09-22
Filing date: 2005-09-22
Publication date: 2007-04-05

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently cool an on-vehicle turbo charger 4 and a rear differential 7. <P>SOLUTION: Travelling air is introduced to the inside of a side member 1 by opening a travelling air introducing port 8 to a front end surface of the side member 1. A first air exhaust nozzle 10 toward the turbo charger 4 is opened on a side part of the side member 1 in the neighborhood of the turbo charger 4. A guide plate 13 of the travelling air to the first air exhaust nozzle 10 is supported on a spring 14 free to fall and lie down, the guide plate 13 falls and lies down by increase of the travelling air and a flow rate of the travelling air to the rear increases. A second air exhaust nozzle 11 toward the rear differential 7 is opened to the side part of the side member 1 in the neighborhood of the rear differential 7. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、車両に搭載されるターボチャージャ及びリアデフの冷却装置に関する。 The present invention relates to a turbocharger and a rear differential cooling device mounted on a vehicle.

特許文献１には、車体の前面の走行風導入口からサイドメンバー内へ導入した走行風を、夫々同心的な曲面を有する複数個のガイド板によってガイドしてエンジンルーム内へ吹付けるようにしたものが開示されている。
特開平８−０４００８７号公報 In Patent Document 1, the traveling wind introduced into the side member from the traveling wind introduction port on the front surface of the vehicle body is guided by a plurality of guide plates each having a concentric curved surface and blown into the engine room. Are disclosed.
JP-A-8-040087

しかしながら、特許文献１に記載の技術は、エンジンルーム内の冷却だけであり、その後方に配置されて発熱量の大きいリアデフの冷却は考慮されていない。
本発明は、このような実状に鑑み、ターボチャージャ及びリアデフを同時に効率良く冷却可能とすることを目的とする。 However, the technique described in Patent Document 1 is only cooling in the engine room, and cooling of a rear differential that is disposed behind the engine room and generates a large amount of heat is not considered.
In view of such a situation, the present invention has an object of enabling efficient cooling of a turbocharger and a rear differential at the same time.

このため、本発明は、サイドメンバーの前端面に走行風導入口を開口させて、サイドメンバー内に走行風を導入し、ターボチャージャ付近のサイドメンバーの側部に、ターボチャージャへ向かう第１エア噴出口を開口させると共に、リアデフ付近のサイドメンバーの側部に、リアデフへ向かう第２エア噴出口を開口させる構成とする。 For this reason, the present invention opens the traveling wind introduction port on the front end surface of the side member, introduces the traveling wind into the side member, and the first air heading toward the turbocharger on the side of the side member near the turbocharger. The jet outlet is opened, and the second air jet head toward the rear differential is opened at the side of the side member near the rear differential.

本発明によれば、高温になっているターボチャージャに効率良く冷却風を当てることができ、ターボチャージャの寿命の向上と周辺部品の熱劣化の低減とを図ることができる。また同時に、車速上昇に伴って発熱量が大きくなるリアデフに冷却風が当たるようになり、リアデフを効果的に冷却できる。 According to the present invention, cooling air can be efficiently applied to a high-temperature turbocharger, and the life of the turbocharger can be improved and thermal deterioration of peripheral components can be reduced. At the same time, the cooling air comes into contact with the rear differential whose calorific value increases as the vehicle speed increases, and the rear differential can be effectively cooled.

以下に本発明の実施の形態を図面に基づいて説明する。
図１は本発明の一実施形態を示す車両の概略平面図、図２は車両前方からの斜視図、図３は図２の要部拡大図である。
車体フレームを構成するサイドメンバー１、２は、車両の左右に一対設けられ、それぞれ中空の矩形断面を有して、車両の前後方向に延びている。 Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a schematic plan view of a vehicle showing an embodiment of the present invention, FIG. 2 is a perspective view from the front of the vehicle, and FIG. 3 is an enlarged view of a main part of FIG.
A pair of side members 1 and 2 constituting the vehicle body frame are provided on the left and right sides of the vehicle, each having a hollow rectangular cross section and extending in the front-rear direction of the vehicle.

そして、一対のサイドメンバー１、２の間に、車両前側から、ターボチャージャ（過給機）４付きのエンジン３、トランスミッション５、車両駆動軸６、リアデフ（リア側差動装置）７等が配置される。
ここで、サイドメンバー１の前端面に走行風導入口８を開口させ、サイドメンバー１内に走行風を導入するようにしている。尚、サイドメンバー１の前端面より前側に取付けられるバンパー９にも、同様の開口を設けることは言うまでもない。 An engine 3 with a turbocharger (supercharger) 4, a transmission 5, a vehicle drive shaft 6, a rear differential (rear differential device) 7, etc. are arranged between the pair of side members 1 and 2 from the front side of the vehicle. Is done.
Here, a traveling wind introduction port 8 is opened at the front end face of the side member 1 so that the traveling wind is introduced into the side member 1. Needless to say, the bumper 9 attached to the front side of the front end surface of the side member 1 is also provided with a similar opening.

ターボチャージャ４付近のサイドメンバー１の側部には、斜め後方のターボチャージャ４へ向かう第１エア噴出口１０を開口させる。
また、リアデフ７付近のサイドメンバー１の側部には、斜め後方のリアデフ７へ向かう第２エア噴出口１１を開口させる。
次に、図４及び図５を参照して、第１エア噴出口１０及び第２噴出口１１付近の送風ガイド構造について説明する。 A first air outlet 10 is opened at the side of the side member 1 near the turbocharger 4 toward the turbocharger 4 obliquely rearward.
In addition, a second air jet 11 directed toward the rear differential 7 that is obliquely rearward is opened at the side of the side member 1 near the rear differential 7.
Next, with reference to FIG.4 and FIG.5, the ventilation guide structure of the 1st air ejection port 10 and 2nd ejection port 11 vicinity is demonstrated.

第１エア噴出口１０の付近には、サイドメンバー１の断面を斜めに横断して、サイドメンバー１内の走行風を第１エア噴出口１０へ導くガイド板１２、１３を設ける。
前記ガイド板１２、１３は、２つに分割して設けられ、一方のガイド板１２は固定とする。他方のガイド板１３はバネ１４により倒伏（傾動）可能に支持して、これに当たる走行風の増大により、この他方のガイド板１３が後方へ倒れて（図３→図４）、リアデフ７側への流量が増大するようになっている。 In the vicinity of the first air outlet 10, guide plates 12 and 13 are provided that guide the traveling wind in the side member 1 to the first air outlet 10 by crossing the cross section of the side member 1 obliquely.
The guide plates 12 and 13 are divided into two, and one guide plate 12 is fixed. The other guide plate 13 is supported by a spring 14 so as to be able to fall (tilt), and the other guide plate 13 is tilted rearward (FIG. 3 → FIG. 4) due to an increase in the traveling wind hitting it, toward the rear differential 7 side. The flow rate is increased.

第２エア噴出口１１の付近には、サイドメンバー１の断面を斜めに横断して、サイドメンバー１内の走行風を第２エア噴出口１１へ導く固定のガイド板１５を設ける。
尚、ターボチャージャ４とは反対側にあるサイドメンバー２には、リアデフ７へ向かう第２エア噴出口１６と、この第２エア噴出口１６への固定のガイド板１７のみを設けてある（図１参照）。 In the vicinity of the second air outlet 11, a fixed guide plate 15 is provided that guides the traveling wind in the side member 1 to the second air outlet 11 by crossing the cross section of the side member 1 obliquely.
The side member 2 on the side opposite to the turbocharger 4 is provided only with a second air jet 16 toward the rear differential 7 and a guide plate 17 fixed to the second air jet 16 (FIG. 1).

次に作用を説明する。
車両の走行時、走行風がサイドメンバー１の前端の走行風導入口８からサイドメンバー１内に導入され、これをエアダクトとして走行風が流れる。走行風は、固定ガイド板１２及び可動ガイド板１３により案内されて、第１エア噴出口１０より噴出し、ターボチャージャ４に吹付けられる。これにより、ターボチャージャ４を効果的に冷却できる。 Next, the operation will be described.
When the vehicle is traveling, traveling wind is introduced into the side member 1 from the traveling wind introduction port 8 at the front end of the side member 1, and traveling wind flows using this as an air duct. The traveling wind is guided by the fixed guide plate 12 and the movable guide plate 13, is ejected from the first air ejection port 10, and is blown to the turbocharger 4. Thereby, the turbocharger 4 can be cooled effectively.

また、車速が上昇すると、リアデフ７の発熱量が大となるが、車速の上昇に伴う走行風の増大により、バネ１４により支持されている可動ガイド板１３が倒れる（図５参照）。すると、サイドメンバー１内を流れる走行風が可動ガイド板１３を超えて後方へ流れ、固定ガイド板１５により案内されて、第２エア噴出口１１より噴出し、リアデフ７に吹付けられる。これにより、リアデフ７を効果的に冷却できる。 Further, when the vehicle speed increases, the amount of heat generated by the rear differential 7 increases, but due to an increase in traveling wind accompanying an increase in the vehicle speed, the movable guide plate 13 supported by the spring 14 falls (see FIG. 5). Then, the traveling wind that flows in the side member 1 flows backward beyond the movable guide plate 13, is guided by the fixed guide plate 15, is ejected from the second air ejection port 11, and is blown to the rear differential 7. Thereby, the rear differential 7 can be cooled effectively.

本実施形態によれば、サイドメンバー１の前端面に走行風導入口８を開口させて、サイドメンバー１内に走行風を導入し、ターボチャージャ４付近のサイドメンバー１の側部に、ターボチャージャ４へ向かう第１エア噴出口１０を開口させると共に、リアデフ７付近のサイドメンバー１の側部に、リアデフ７へ向かう第２エア噴出口１１を開口させたことにより、走行中、高温になっているターボチャージャ４に効率良く冷却風を当てることができ、ターボチャージャ４の寿命の向上と周辺部品の熱劣化の低減とを図ることができる。また同時に、車速上昇に伴って発熱量が大きくなるリアデフ７に冷却風が当たるようになり、リアデフ７を効果的に冷却できる。 According to the present embodiment, the traveling wind introduction port 8 is opened at the front end surface of the side member 1 to introduce the traveling wind into the side member 1, and the turbocharger is disposed on the side of the side member 1 near the turbocharger 4. The first air outlet 10 toward 4 is opened, and the second air outlet 11 toward the rear differential 7 is opened at the side of the side member 1 near the rear differential 7. The cooling air can be efficiently applied to the existing turbocharger 4, and the life of the turbocharger 4 can be improved and the thermal deterioration of peripheral components can be reduced. At the same time, the cooling air comes into contact with the rear differential 7 whose calorific value increases as the vehicle speed increases, and the rear differential 7 can be effectively cooled.

また、本実施形態によれば、第１エア噴出口１０付近にて、サイドメンバー１の断面の少なくとも一部を横断して、サイドメンバー１内の走行風を第１エア噴出口１０へ導くガイド板１２、１３を設けたことにより、第１エア噴出口１０へ走行風を的確に案内して、ターボチャージャ４に対する冷却効果を高めることができる。
また、本実施形態によれば、前記ガイド板１３をバネ１４により倒伏可能に支持して、走行風の増大により、このガイド板１３が倒れて、リアデフ１３側への流量が増大するように構成したことにより、すなわち、流速に応じてガイド板１３が倒れていく仕組みになっていることで、車速が上がるほど、車速上昇に伴って発熱量が大きくなるリアデフ７により多くの冷却風が当たるようになる。また、複雑な制御を行うことなく、ターボチャージャ４とリアデフ７とを同時にかつ効率良く冷却することが可能であり、レイアウト上の自由度も高い。 Further, according to the present embodiment, the guide that guides the traveling wind in the side member 1 to the first air outlet 10 across at least a part of the cross section of the side member 1 in the vicinity of the first air outlet 10. By providing the plates 12 and 13, it is possible to accurately guide the traveling wind to the first air outlet 10 and enhance the cooling effect on the turbocharger 4.
Further, according to the present embodiment, the guide plate 13 is supported by the spring 14 so as to be able to fall down, and the guide plate 13 is tilted due to an increase in traveling wind so that the flow rate toward the rear differential 13 is increased. In other words, the guide plate 13 is tilted in accordance with the flow velocity, so that as the vehicle speed increases, more cooling air is applied to the rear differential 7 that generates more heat as the vehicle speed increases. become. Further, the turbocharger 4 and the rear differential 7 can be simultaneously and efficiently cooled without performing complicated control, and the degree of freedom in layout is high.

また、本実施形態によれば、第２エア噴出口１１付近にて、サイドメンバー１の断面の少なくとも一部（全部）を横断して、サイドメンバー１内の走行風を第２エア噴出口１１へ導くガイド板１５を設けたことにより、第２エア噴出口１１へ走行風を的確に案内して、リアデフ７に対する冷却効果を高めることができる。
尚、ターボチャージャ４、リアデフ７の他、トランスミッション５へ冷却風を導いて、トランスミッション５を冷却するようにしてもよい。また、各エア噴出口に絞りを設けて、噴出流速を調整するようにしてもよい。また、エア噴出口などの穴を開けることで剛性が低下する分、適宜リブ等で補強するとよい。 Further, according to the present embodiment, in the vicinity of the second air outlet 11, at least a part (all) of the cross-section of the side member 1 is traversed, and the traveling wind in the side member 1 is changed to the second air outlet 11. By providing the guide plate 15 that guides to the second air jet 11, it is possible to accurately guide the traveling wind to the second air outlet 11 and enhance the cooling effect on the rear differential 7.
In addition to the turbocharger 4 and the rear differential 7, cooling air may be guided to the transmission 5 to cool the transmission 5. Further, each air jet outlet may be provided with a throttle to adjust the jet flow velocity. Moreover, it is good to reinforce with a rib etc. suitably by the part which rigidity falls by opening holes, such as an air jet nozzle.

本発明の一実施形態を示す車両の概略平面図1 is a schematic plan view of a vehicle showing an embodiment of the present invention. 車両前方からの斜視図Perspective view from the front of the vehicle 図２の要部拡大図2 is an enlarged view of the main part of FIG. 送風ガイド構造の低車速時の断面図Cross section of the air guide structure at low vehicle speed 送風ガイド構造の高車速時の断面図Cross-sectional view of the air guide structure at high vehicle speed

Explanation of symbols

１、２サイドメンバー
３エンジン
４ターボチャージャ
５トランスミッション
６車両駆動軸
７リアデフ
８走行風導入口
９バンパー
１０第１エア噴出口
１１第２エア噴出口
１２固定ガイド板
１３可動ガイド板
１４バネ
１５固定ガイド板
１６第２エア噴出口
１７固定ガイド板 1, 2 Side member 3 Engine 4 Turbocharger 5 Transmission 6 Vehicle drive shaft 7 Rear differential 8 Traveling wind inlet 9 Bumper 10 First air outlet 11 Second air outlet 12 Fixed guide plate 13 Movable guide plate 14 Spring 15 Fixed guide Plate 16 Second air outlet 17 Fixed guide plate

Claims

Open the running wind inlet at the front end face of the side member, introduce the running wind into the side member,
The first air jet port toward the turbocharger is opened at the side of the side member near the turbocharger, and the second air jet port toward the rear differential is opened at the side of the side member near the rear differential. Vehicle cooling device.

The guide plate which guides the running wind in a side member to the 1st air spout crossing at least a part of the section of a side member near the 1st air spout is provided. The vehicle cooling device according to claim 1.

3. The vehicle according to claim 2, wherein the guide plate is supported by a spring so as to be able to fall down, and the guide plate is tilted by an increase in traveling wind so that the flow rate to the rear differential side increases. Cooling system.

The guide plate is divided into two parts, one guide plate is fixed, the other guide plate is supported by a spring so as to be able to fall down, the other guide plate falls due to an increase in traveling wind, 3. The vehicle cooling device according to claim 2, wherein the flow rate to the rear differential side is increased.

The guide plate which guides the running wind in a side member to the 2nd air spout crossing at least a part of the section of a side member near the 2nd air spout is provided. The vehicle cooling device according to any one of claims 1 to 4.