★直3エンジン_なぜ3気筒が増えている? [トヨタ][ヤマハ][BMW][メルセデス][ルノー][WV][プジョー][ダイハツ][トライアンフ]

We have to consider how 3-cylinder engines are better than 4-cylinder engines in some way in terms of thermal efficiency  and fuel economy. This video will show you how the engines work. Let's figure it out.