The hydraulic drilling machine with computer control technology, the pump and engine matching control to realize the intelligent, not only power is stronger, and more fuel-efficient.

这些液压钻机借助了计算机控制技术，泵与发动机的匹配控制实现智能化，不但功率更强，而且更加省油。

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It is an important factor for the perfect matching between the maximal input power of the hydraulic oil pump and the maximum output power of the engine in the design process of the hydraulic shovel.

液压油泵的最大输入功率与发动机的最大输出功率之间的匹配问题是液压挖掘机设计过程中的一个重要内容。

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The wheel system for automobile engine accessories consist of the compressor, power steering pump, air filter, generator, etc. which linked by a V-belt or poly_rib belt.

发动机前端附件传动轮系是一个包括空调压缩机、动力转向泵、发电机、机油泵等附件的系统，它们通过V型带或者多楔带连接。

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Controlling steering using electric motors also helps to reduce fuel consumption and hence carbon-dioxide emissions. (Electric motors require power only when the steering wheel is turned, whereas a hydraulic pump drains power from the engine all the time.) Ford reckons 90% of its cars will have electronic steering within three years.

ECONOMIST: Rational consumer