JP2007099239A - Component arrangement structure in motor room - Google Patents

Component arrangement structure in motor room Download PDF

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JP2007099239A
JP2007099239A JP2005295450A JP2005295450A JP2007099239A JP 2007099239 A JP2007099239 A JP 2007099239A JP 2005295450 A JP2005295450 A JP 2005295450A JP 2005295450 A JP2005295450 A JP 2005295450A JP 2007099239 A JP2007099239 A JP 2007099239A
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vehicle
motor room
motor
arrangement structure
inverter
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JP4810955B2 (en
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Satoshi Shigematsu
聡 重松
Makoto Takao
真 高尾
Mikio Naruse
幹夫 成瀬
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Nissan Motor Co Ltd
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Nissan Motor Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

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  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a component arrangement structure in a motor room capable of protecting an electric component unit when being subjected to an impact from the front side of a vehicle while preventing an increase in the weight of the electric component unit and the degradation of space efficiency in a motor room. <P>SOLUTION: An inverter 15 for converting power generated by a fuel cell (not shown) mounted to a vehicle 1 from DC power to AC power and supplying the power to a motor 17 for driving the vehicle is accommodated in a motor room 3 of the vehicle 1 for accommodating the motor 17 for driving the vehicle. The inverter 15 has a cooling iron-made water jacket 19 on a lower part thereof, and the front end 19b of the water jacket 19 in the vehicular longitudinal direction is arranged in a forward part of the vehicle from the front end 21a of a cover 21 of the inverter 15 in the vehicular longitudinal direction. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、車両前部におけるモータルーム内部品配置構造に関する。   The present invention relates to a component arrangement structure in a motor room at a front portion of a vehicle.

車両前部のモータルーム内に配置する電気部品ユニットとして、例えば、車両駆動用モータに電力を供給する強電ユニット用インバータや燃料電池スタックがあるが、下記特許文献１には、モータルーム内に電気部品ユニットとして電力供給装置を配置する点が記載されている。   Examples of the electric component unit disposed in the motor room in the front part of the vehicle include a high-power unit inverter that supplies power to the vehicle driving motor and a fuel cell stack. The point which arrange | positions an electric power supply apparatus as a component unit is described.

このような電気部品ユニットを搭載した車両においては、前面衝突時に電気部品ユニットを保護するために、その本体部を収容するカバー部を、鉄やアルミニウムなどで構成してその板厚を厚くしたり、あるいは電気部品ユニットの車両前方に配置する他部品との間に充分なスペースを確保する必要がある。
特開２００４−２４３８９２号公報 In a vehicle equipped with such an electric component unit, in order to protect the electric component unit at the time of a frontal collision, the cover portion that accommodates the main body portion is made of iron or aluminum to increase the plate thickness. Alternatively, it is necessary to secure a sufficient space between the electric component unit and other components arranged in front of the vehicle.
JP 2004-243892 A

しかしながら、電気部品ユニットのカバー部の板厚を厚くすると、重量が増大し、電気部品ユニットを支持する部材や車体側も強固なものとする必要が生じて車両全体の重量増しを招く。一方、電気部品ユニットの車両前方に配置する他部品との間に充分なスペースを確保する場合には、モータルーム内のスペース効率が悪化する。   However, when the plate thickness of the cover part of the electric component unit is increased, the weight increases, and it becomes necessary to make the member supporting the electric component unit and the vehicle body side strong, resulting in an increase in the weight of the entire vehicle. On the other hand, when a sufficient space is ensured between the electric component unit and other components arranged in front of the vehicle, the space efficiency in the motor room is deteriorated.

そこで、本発明は、電気部品ユニットの重量増しおよびモータルーム内のスペース効率の悪化を防止しつつ、車両前方から衝撃を受ける際に電気部品ユニットを保護することを目的としている。   Therefore, an object of the present invention is to protect an electrical component unit when receiving an impact from the front of the vehicle while preventing an increase in the weight of the electrical component unit and deterioration of space efficiency in the motor room.

本発明は、車両前部のモータルーム内に電気部品ユニットを設け、この電気部品ユニットのカバー部に一体化して電気部品ユニットを冷却する冷却手段の車両前後方向前端部を、前記電気部品ユニットの前記カバー部の車両前後方向前端部より車両前方に配置したことを最も主要な特徴とする。   According to the present invention, an electric component unit is provided in a motor room at the front of the vehicle, and the front end in the vehicle front-rear direction of the cooling means that is integrated with the cover of the electric component unit to cool the electric component unit is provided on the electric component unit. The most important feature is that the cover portion is disposed in front of the vehicle from the front end in the vehicle front-rear direction.

本発明によれば、車両が前方から衝撃を受ける際に、電気部品ユニットのカバー部の車両前後方向前端部より車両前方に前端部を配置した冷却手段が、電気部品ユニットより先に衝撃を受けるので、電気部品ユニットのカバー部の板厚を厚くするなどして重量増しを招くことなく、また電気部品ユニットの車両前方に配置する他部品との間に充分なスペースを確保することなく、電気部品ユニットを保護することができる。   According to the present invention, when the vehicle receives an impact from the front, the cooling means in which the front end portion is arranged in front of the vehicle in the vehicle front-rear direction front end portion of the cover portion of the electrical component unit receives the impact before the electrical component unit. Therefore, without increasing the weight of the cover of the electric component unit by increasing the thickness, etc., and without securing a sufficient space between the electric component unit and other components arranged in front of the vehicle. The component unit can be protected.

以下、本発明の実施の形態を図面に基づき説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は、本発明の一実施形態に係わるモータルーム内部品配置構造を示す、車両前部の側面断面図、図２は、モータルーム内の平面図である。なお、図１，図２および後述する図３，図４中の矢印ＦＲで示す方向が車両前方、同ＵＰＲで示す方向が車両上方、同ＬＨで示す方向が車両左方である。   FIG. 1 is a side sectional view of a front part of a vehicle showing a component arrangement structure in a motor room according to an embodiment of the present invention, and FIG. 2 is a plan view in the motor room. 1 and 2 and FIGS. 3 and 4 to be described later, the direction indicated by an arrow FR is the front of the vehicle, the direction indicated by the UPR is the upper side of the vehicle, and the direction indicated by the LH is the left side of the vehicle.

車両１の前部のモータルーム３の車両前方にはラジエータ５（図２では省略）を配置しており、このモータルーム３は、車両後方をダッシュパネル７により画成し、車幅方向両側をフードリッジパネル９により画成している。   A radiator 5 (not shown in FIG. 2) is arranged in front of the motor room 3 at the front of the vehicle 1. The motor room 3 defines a rear side of the vehicle by a dash panel 7 and has both sides in the vehicle width direction. It is defined by the food ridge panel 9.

また、フードリッジパネル９の下部には、車両前後方向に延びるフロントサイドメンバ１１を設けてある。フロントサイドメンバ１１は、図１に示すようにモータルーム３から車両後方に向かうに従って屈曲部１１ａにて下方に屈曲し、モータルーム３の後方の車室側部分では車両の床下位置にて車両後方に延びている。   A front side member 11 extending in the vehicle front-rear direction is provided at the lower portion of the hood ridge panel 9. As shown in FIG. 1, the front side member 11 is bent downward at a bent portion 11 a as it goes from the motor room 3 toward the rear of the vehicle. It extends to.

上記した左右一対のフロントサイドメンバ１１には、車幅方向に延びる２本の部品搭載フレーム１３の端部を連結し、部品搭載フレーム１３上には、電気部品ユニットとしてのインバータ１５を設置する。インバータ１５は、車両１に搭載している図示しない燃料電池で発電した電力を、直流から交流に変換して後述する車両駆動用のモータ１７に供給する機能を備える。   End portions of two component mounting frames 13 extending in the vehicle width direction are connected to the pair of left and right front side members 11 described above, and an inverter 15 as an electric component unit is installed on the component mounting frame 13. The inverter 15 has a function of converting electric power generated by a fuel cell (not shown) mounted on the vehicle 1 from direct current to alternating current and supplying it to a vehicle driving motor 17 described later.

図３はインバータ１５の斜視図で、図４は図３のＡ−Ａ断面図である。インバータ１５は、冷却手段としてプレート状の鉄製のウォータジャケット部１９を下部に一体化して備え、ウォータジャケット部１９上に各種電気部品２０を設置固定している。ウォータジャケット部１９内には、冷却水通路１９ａを形成し、この冷却水通路１９ａに冷却水を流すことで、前記した各種電気部品２０を冷却する。   3 is a perspective view of the inverter 15, and FIG. 4 is a cross-sectional view taken along line AA of FIG. The inverter 15 includes a plate-shaped iron water jacket portion 19 integrated as a lower portion as a cooling means, and various electrical components 20 are installed and fixed on the water jacket portion 19. A cooling water passage 19a is formed in the water jacket portion 19, and the various electrical components 20 described above are cooled by flowing cooling water through the cooling water passage 19a.

そして、これら各種電気部品２０を覆うように、ウォータジャケット部１９上にカバー部２１を固定する。カバー部２１は、上下双方が開口した下カバー２３と、下カバー２３の上部開口を覆う上カバー２５とを備え、ここでは金属に比較して軽量な樹脂製としている。下カバー２３は、その下部全周に形成して外側に突出するフランジ部２３ａをボルト２７によりウォータジャケット部１９に固定し、上カバー２５は、下カバー２３の上部全周に形成して内側に突出するフランジ部２３ｂにボルト２９により固定する。   And the cover part 21 is fixed on the water jacket part 19 so that these various electrical components 20 may be covered. The cover portion 21 includes a lower cover 23 that is open on both the upper and lower sides, and an upper cover 25 that covers an upper opening of the lower cover 23. Here, the cover portion 21 is made of a resin that is lighter than metal. The lower cover 23 is formed on the entire periphery of the lower portion and a flange portion 23a protruding outward is fixed to the water jacket portion 19 with a bolt 27, and the upper cover 25 is formed on the entire upper periphery of the lower cover 23 and is formed on the inner side. It fixes to the flange part 23b which protrudes with the volt | bolt 29. FIG.

そして、上記したウォータジャケット部１９の車両前後方向前端部１９ｂを、カバー部２１の車両前後方向前端部２１ａより車両前方に配置する。   The vehicle front-rear direction front end portion 19 b of the water jacket portion 19 is disposed in front of the vehicle from the vehicle front-rear direction front end portion 21 a of the cover portion 21.

また、上記したモータルーム３内におけるインバータ１５の車両前方側には、冷却水用容器としての樹脂製の冷却水リザーバタンク３１を配置する。冷却水リザーバタンク３１は、特に図示しないが、部品搭載フレーム１３などに接続した支持部材を介して車体側に固定する。この冷却水リザーバタンク３１は、ウォータジャケット部１９の冷却水通路１９ａに供給する冷却水を貯留する。   Further, a resin-made cooling water reservoir tank 31 serving as a cooling water container is disposed on the vehicle front side of the inverter 15 in the motor room 3 described above. Although not particularly shown, the cooling water reservoir tank 31 is fixed to the vehicle body via a support member connected to the component mounting frame 13 or the like. The cooling water reservoir tank 31 stores cooling water supplied to the cooling water passage 19 a of the water jacket portion 19.

前記した車両駆動用のモータ１７は、インバータ１５の下方に配置し、その下部後方側をサスペンションメンバ３３上に固定する一方、その上部を図示しないブラケットなどを介してフロントサイドメンバ１１に固定する。また、サスペンションメンバ１９は、左右のフロントサイドメンバ１１に対し、後部を後方連結部３４にて連結固定するとともに、前部を図示しない前方連結部にて連結固定する。   The motor 17 for driving the vehicle is disposed below the inverter 15, and the lower rear side thereof is fixed on the suspension member 33, while the upper portion thereof is fixed to the front side member 11 via a bracket (not shown). The suspension member 19 is connected and fixed to the left and right front side members 11 at the rear part by the rear connecting part 34 and the front part is connected and fixed by the front connecting part (not shown).

そして、上記したモータ１７の車両前方かつ上方位置には、車両の車体構造部材に比べて高強度な硬物部品としての空気コンプレッサ３５を一体的に取り付ける。このとき空気コンプレッサ３５は、車両前後方向前端部３５ａを、インバータ１５の車両前後方向前端部（ウォータジャケット部１９の車両前後方向前端部１９ｂに相当）より車両前方に配置する。空気コンプレッサ３５は、駆動源としての図示しない燃料電池に供給する空気を圧縮する。   An air compressor 35 as a hard part having a higher strength than that of the vehicle body structural member of the vehicle is integrally attached to the front side and the upper position of the motor 17 described above. At this time, the air compressor 35 arranges the vehicle front-rear direction front end portion 35 a ahead of the vehicle from the vehicle front-rear direction front end portion of the inverter 15 (corresponding to the vehicle front-rear direction front end portion 19 b of the water jacket portion 19). The air compressor 35 compresses air supplied to a fuel cell (not shown) as a drive source.

空気コンプレッサ３５のさらに車両前方には、ラジエータ５に一体的に設けてある図示しないラジエータファン用のモータ３７を配置する。   A motor 37 for a radiator fan (not shown) provided integrally with the radiator 5 is disposed further forward of the air compressor 35 than the vehicle.

上記した本実施形態によるモータルーム内部品配置構造によれば、車両１がその前方から衝撃を受けるような車両前面衝突時には、ウォータジャケット部１９の車両前後方向前端部１９ｂを、カバー部２１の車両前後方向前端部２１ａより車両前方に配置しているので、車両前方から他の部品が後退してきた場合に、カバー部２１より先に鉄製のウォータジャケット部１９に他の部品が干渉し、カバー部２１を保護することができ、内部に収容する電気部品２０を保護することができる。   According to the component arrangement structure in the motor room according to the above-described embodiment, the front end portion 19b of the water jacket portion 19 in the front-rear direction of the vehicle at the time of the front collision of the vehicle 1 in which the vehicle 1 receives an impact from the front thereof, Since it arrange | positions ahead of the vehicle from the front-back direction front-end part 21a, when other parts are retracted from the vehicle front, other parts interfere with the iron water jacket part 19 before the cover part 21, and the cover part 21 can be protected, and the electrical component 20 accommodated therein can be protected.

これにより、カバー部２１を樹脂やアルミニウム製の薄板としてインバータ１５全体を軽量化しても、前面衝突時に電気部品２０を保護することができる。加えて、インバータ１５全体を軽量化することにより、インバータ１５を車体に保持する部材や車体側も簡略化することが可能となり、車両重量の軽量化が可能となる。   Thereby, even if the cover part 21 is made of a thin plate made of resin or aluminum and the entire inverter 15 is reduced in weight, the electrical component 20 can be protected in the event of a frontal collision. In addition, by reducing the weight of the inverter 15 as a whole, it is possible to simplify the member that holds the inverter 15 on the vehicle body and the vehicle body side, and the vehicle weight can be reduced.

さらに、上記のようにして電気部品２０を保護することができるので、インバータ１５の車両前方のスペースを大きくとることなく、カバー部２１およびその内部に収容する電気部品２０を保護することができ、モータルーム３内のスペース効率を高めることもできる。   Furthermore, since the electrical component 20 can be protected as described above, the cover portion 21 and the electrical component 20 accommodated therein can be protected without taking up a space in front of the inverter 15 in the vehicle. The space efficiency in the motor room 3 can also be improved.

また、インバータ１５の車両前方には冷却水リザーバタンク３１を配置しているので、上記した車両の前面衝突時に、冷却水リザーバタンク３１よりさらに車両前方の他の部品が後退してインバータ１５に近づく際に、樹脂製の冷却水リザーバタンク３１が衝撃緩衝材として機能する。   In addition, since the coolant reservoir tank 31 is arranged in front of the inverter 15, other components in front of the coolant further recede from the coolant reservoir tank 31 and approach the inverter 15 at the time of the front collision of the vehicle. At this time, the resin-made cooling water reservoir tank 31 functions as an impact buffer.

これにより、インバータ１５の車両前方のスペースを大きくとることなく、カバー部２１およびその内部に収容する電気部品２０を保護することができて、モータルーム３内のスペース効率を高めることができ、かつ電気部品２０を保護できることからカバー部２１を樹脂やアルミニウム製の薄板として軽量化することが可能となる。   Accordingly, the cover 21 and the electric component 20 accommodated therein can be protected without taking up a space in front of the vehicle of the inverter 15, and the space efficiency in the motor room 3 can be improved. Since the electrical component 20 can be protected, the cover 21 can be reduced in weight as a thin plate made of resin or aluminum.

また、車両の車体構造部材に比べて高強度な硬物部品である車両空調用の空気コンプレッサ３５の車両前後方向前端部を、インバータ１５の車両前後方向前端部より車両前方に配置したので、上記した車両の前面衝突時に、空気コンプレッサ３５の車両前方にある部品、例えばラジエータ５が後退してくる際に、空気コンプレッサ３５に最初に干渉し、インバータ１５を保護することができる。   In addition, since the vehicle front-rear direction front end portion of the air compressor 35 for vehicle air conditioning, which is a high-strength hard part component compared to the vehicle body structural member of the vehicle, is arranged in front of the vehicle from the vehicle front-rear direction front end portion of the inverter 15, When a vehicle frontal collision occurs, when a component in front of the air compressor 35, for example, the radiator 5, moves backward, the air compressor 35 is first interfered to protect the inverter 15.

これにより、インバータ１５の車両前方のスペースを大きくとることなく、カバー部２１およびその内部に収容する電気部品２０を保護することができて、モータルーム３内のスペース効率を高めることができ、かつ電気部品２０を保護できることからカバー部２１を樹脂やアルミニウム製の薄板として軽量化することが可能となる。   Accordingly, the cover 21 and the electric component 20 accommodated therein can be protected without taking up a space in front of the vehicle of the inverter 15, and the space efficiency in the motor room 3 can be improved. Since the electrical component 20 can be protected, the cover 21 can be reduced in weight as a thin plate made of resin or aluminum.

なお、上記した硬物部品として空気コンプレッサ３５に限ることはなく、車両駆動用のモータ１７や、図示していないが車両空調用のコンプレッサでもよく、これらの硬物部品の車両前後方向前端部を、インバータ１５の車両前後方向前端部より車両前方に配置しても、同様の効果を得ることができる。   Note that the above-described hard part is not limited to the air compressor 35, and may be a vehicle driving motor 17 or a vehicle air conditioning compressor (not shown). Even if the inverter 15 is arranged in front of the vehicle from the front end in the vehicle front-rear direction, the same effect can be obtained.

また、上記した硬物部品である空気コンプレッサ３５の車両前方側に、車両後方に凸形状となるラジエータファン用のモータ３７を配置したので、上記した車両の前面衝突時に、モータ３７の車両前方に位置するラジエータ５が後退してくる際に、モータ３７がその後方の空気コンプレッサ３５に最初に干渉することになる。   Further, since the radiator fan motor 37 having a convex shape is arranged on the vehicle front side of the air compressor 35 which is the above-described hard part, the motor 37 is placed in front of the motor 37 at the time of the front collision of the vehicle. When the radiator 5 is moved backward, the motor 37 first interferes with the air compressor 35 behind it.

この際、前面衝突時に後退してくるラジエータ５やラジエータファンのハウジングがインバータ１５に干渉する時点では、充分に衝突エネルギが吸収された状態になっているので、インバータ１５を保護することができる。この結果、インバータ１５の車両前方のスペースを大きくとる必要がないので、モータルーム３内のスペース効率を高めることができるとともに、カバー部２１を樹脂やアルミニウム製の薄板として軽量化することが可能となる。   At this time, when the radiator 5 or the radiator fan housing retracted at the time of a frontal collision interferes with the inverter 15, the collision energy is sufficiently absorbed, so that the inverter 15 can be protected. As a result, since it is not necessary to take a large space in front of the inverter 15 in the vehicle, the space efficiency in the motor room 3 can be increased, and the cover portion 21 can be reduced in weight as a thin plate made of resin or aluminum. Become.

なお、電気部品ユニットとしては、上記したインバータ１５に限ることはなく、例えば燃料電池スタックでもよい。   The electric component unit is not limited to the inverter 15 described above, and may be a fuel cell stack, for example.

本発明の一実施形態に係わるモータルーム内部品配置構造を示す、車両前部の側面断面図である。It is side surface sectional drawing of the vehicle front part which shows the components arrangement | positioning structure in the motor room concerning one Embodiment of this invention. 図１のモータルーム内の平面図である。It is a top view in the motor room of FIG. 図１のモータルーム内部品配置構造におけるインバータの斜視図である。FIG. 2 is a perspective view of an inverter in the motor room component arrangement structure of FIG. 1. 図３のＡ−Ａ断面図である。It is AA sectional drawing of FIG.

符号の説明Explanation of symbols

３ モータルーム
１５ インバータ（電気部品ユニット）
１９ ウォータジャケット部（冷却手段）
２１ カバー部
３１ 冷却水リザーバタンク（冷却水用容器）
３５ 空気コンプレッサ（硬物部品）
３７ ラジエータファン用のモータ 3 Motor room 15 Inverter (electric parts unit)
19 Water jacket (cooling means)
21 Cover 31 Cooling water reservoir tank (cooling water container)
35 Air compressor (hard parts)
37 Motor for radiator fan

Claims (7)

車両前部のモータルーム内に電気部品ユニットを設け、この電気部品ユニットのカバー部に一体化して電気部品ユニットを冷却する冷却手段の車両前後方向前端部を、前記電気部品ユニットの前記カバー部の車両前後方向前端部より車両前方に配置したことを特徴とするモータルーム内部品配置構造。   An electric component unit is provided in the motor room at the front of the vehicle, and the front end portion in the vehicle front-rear direction of the cooling means for cooling the electric component unit integrated with the cover portion of the electric component unit is connected to the cover portion of the electric component unit. A component arrangement structure in a motor room, which is arranged in front of the vehicle from the front end in the vehicle front-rear direction. 前記電気部品ユニットの車両前方に、冷却水用容器を配置したことを特徴とする請求項１に記載のモータルーム内部品配置構造。   The component arrangement structure in the motor room according to claim 1, wherein a cooling water container is arranged in front of the electric component unit in the vehicle. 前記車両の車体構造部材に比べて高強度な硬物部品をモータルーム内に設け、この硬物部品の車両前後方向前端部を、前記電気部品ユニットの車両前後方向前端部より車両前方に配置したことを特徴とする請求項１または２に記載のモータルーム内部品配置構造。   A hard part having higher strength than the vehicle body structural member of the vehicle is provided in the motor room, and a front end portion of the hard part in the vehicle front-rear direction is disposed in front of the vehicle from a front end portion of the electric component unit in the vehicle front-rear direction. The component arrangement structure in the motor room according to claim 1 or 2. 前記硬物部品は、車両の駆動源に供給する空気を圧縮する空気コンプレッサであることを特徴とする請求項３に記載のモータルーム内部品配置構造。   4. The component arrangement structure in a motor room according to claim 3, wherein the hard part is an air compressor that compresses air supplied to a drive source of a vehicle. 前記硬物部品は、車両空調用のコンプレッサであることを特徴とする請求項３に記載のモータルーム内部品配置構造。   The component arrangement structure in a motor room according to claim 3, wherein the hard part is a compressor for vehicle air conditioning. 前記硬物部品は、車両駆動用のモータであることを特徴とする請求項３に記載のモータルーム内部品配置構造。   The component arrangement structure in a motor room according to claim 3, wherein the hard part is a motor for driving a vehicle. 前記硬物部品の車両前方に、ラジエータファン用のモータを配置したことを特徴とする請求項３ないし６のいずれか１項に記載のモータルーム内部品配置構造。   The motor room component arrangement structure according to any one of claims 3 to 6, wherein a motor for a radiator fan is arranged in front of the hard component vehicle.
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