The trigger wheel rotates with engine RPMs and causes the speed sensor, or pickup oil, to produce triggering voltage pulses that correspond to engine speed and piston position.

触发叶轮随发动机转速而旋转，使得转速传感器或拾波线圈产生与发动机转速和活塞位置相对应的触发电压脉冲。

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The electronic control unit allows current to flow through the ignition coil primary winding until it senses a triggering voltage pulse from the speed sensor, or pickup coil.

电子控制单元使电流通过初级绕组直到感知到一个从转速传感器或拾波线圈产生的触发电压脉冲。

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According to the relationship of rotational speed, power and DC bus voltage, observing rotational speed by using DC bus voltage is proposed to realize none direct speed measurement.

从发电机转速、功率和直流母线电压之间的相互关系出发，提出利用直流母线电压进行转速观测实现无速度传感器。

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And consumption is further reduced by adjusting the operating speed and voltage of the chip on the fly, depending on the user's activity.

ECONOMIST: Transmetamorphosis

It's a less sophisticated auto-overclock, whereby three of the six cores are decelerated in order to give the other trio some extra voltage and speed for more serialized workloads.

ENGADGET: AMD's hexacore Phenom II X6 will offer Turbo Core automatic overclocking

In addition to monitoring the temperature, voltage and fan speed, the utility can also be used for overclocking and overvoltaging!

ENGADGET: MSI's Afterburner Android app makes GPU overclocking as easy as Facebooking