一体なぜ?見た目は「5シリーズ・セダン」のテストカーなのに、720馬力&10,000Nmを発揮するクレイジーモンスターの正体とは?

~実はとんでもないパワーを隠し持っている「5シリーズ・セダン」~

BMWのミドルサイズ4ドアセダン「5シリーズ」にちょっとした小細工を仕掛けたことにより、何とフェラーリ「488ピスタ/F8 Tributo」やランボルギーニ「アヴェンタドール」、そしてテスラ「ロードスターⅡ」に匹敵するパワーとトルクを持つ一台へと進化。

今回発表された個体は、パッと見は次世代「5シリーズ」のテストカーのようにも見えますが、実際には「M550i xDrive/M5コンペティション(Competition)」よりも強力な第5世代Power-BEV(バッテリー式電動輸送機器)を搭載する究極のクレイジーモデルとなります。

スポンサーリンク

~実は次世代EVモデルの開発用として活用されるモックアップ~

つまり、このモデルに搭載されているPower-BEVとは、今後の次世代オールエレクトリック・クロスオーバー「iX3」等にも搭載されるバッテリのプロトタイプのようなもので、内燃機関を一切搭載せず、フロントアクスルに1基、リヤアクスルに2基の電気モータ、そして45kWhのバッテリーパックを搭載したクリーンモデルとなります。

そのため、発揮されるパワーは4ドアセダンとは思えないほどに超強力となるシステム総出力720hp/最大トルク10,000Nm(?!)を発揮。

車体重量はかなり重めの2,404kgとなりますが、その異常ともいえるトルクの恩恵を受けることで、0-100km/hの加速時間は3秒以下になるとのこと。

もちろん、直線性でのパフォーマンスを発揮するだけでなく、コーナリング性能においても充実した足回りを提供しているため、ドライバは最高の感動を受け取ることができると言われています。

なお、このモデルに関する市販化は全く予定されておらず、あくまでも次世代のフルエレクトリックモデルへとつなぐ開発車両となるため、今後モーターショー等にて登場することはまず考えにくいと思われますね。

BMW Group trial vehicle “Power BEV”: #NEXTGen19.

The BMW Group trial vehicle “Power BEV” presented during #NEXTGen explores what is technically possible. The vehicle is fitted with three fifth-generation electric drive units and has a maximum system output in excess of 530 kW/720 hp. This enables it to accelerate from 0 to 100 km/h (62 mph) in comfortably under three seconds.
Munich. The BMW Group trial vehicle “Power BEV” presented during #NEXTGen explores what is technically possible. The vehicle is fitted with three fifth-generation electric drive units and has a maximum system output in excess of 530 kW/720 hp. This enables it to accelerate from 0 to 100 km/h (62 mph) in comfortably under three seconds.

The development team’s aim here was to build an experimental vehicle which impresses not only with its longitudinal dynamics but also in terms of lateral dynamics. Indeed, as drivers would expect from a BMW, it has been designed not only to be fast in a straight line but also to put a smile on the driver’s face thorough keenly taken corners.

To this end, the chassis and powertrain engineers worked together particularly closely to maximise the car’s performance. Key to its dynamic attributes is that the two electric motors at the rear axle are controlled separately. This brings e-torque vectoring into play, which enables maximum drive power to be translated into forward propulsion even in extremely dynamic driving manoeuvres.

The result is more effective and precise than with a limited slip differential, because actively targeted inputs are possible in any driving situation. By contrast, a limited slip differential always reacts to a difference in rotation speed between the driven wheels.

The drive system comprises three fifth-generation drive units, each of which brings together an electric motor and the associated power electronics and power take-off within a single housing. One is mounted at the front axle and two (a double drive unit) at the rear axle. Another notable aspect of this generation alongside its eye-catching power is that it is entirely free of rare earths. An electric motor of this type will make its series production debut in the BMW iX3. The iX3 will only have one motor, though, rather than three.

A current BMW 5 Series production model serves as the donor car for the Power BEV. Integrating a drive system of this type into a production car represents a serious technical undertaking, but it has been achieved here with absolutely no restriction in passenger compartment space. This makes it far easier to assess this drive concept alongside alternatives.

It has also allowed the engineers to look even more effectively into the possibilities opened up by two separately controllable electric motors at the rear axle with e-torque vectoring.

And that means, in future series-production vehicle projects, the right technology can be selected for the model at hand. Customers will therefore be provided with the most appropriate technology for their choice of vehicle concept.

☆★☆BMW関連記事5選はコチラ!☆★☆

Reference:motor1.com

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