增强超流轴承(EHFB) -确保一致和稳定的转速，延长寿命的使用。
Enhanced Hyper-Flow Bearing (EHFB) - to ensure consistent and stable RPM, prolonged lifetime of usage.
不像运行起来比它更稳定的直列六缸引擎或者极其流畅的V - 12引擎，卑微的四缸引擎会以一种比自身机轴转速高两倍的频率产生一上一下的振动。
Unlike the better balanced straight-six or even the ultra-smooth V-12 engine, the humble four-cylinder generates an up and down vibration with a frequency of twice the crankshaft's rotational speed.
进一步分析表明，能耗不能降低的原因仍然是因为转速被稳定在最低转速下运行所致。
Further analysis shows that the reasons for reducing energy consumption can not continue because the speed was stable in operation due to the minimum speed.
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