The generating process of piston knock noise is thoroughly analyzed by the study of piston motion state and knock process with the engine at the rated engine speed.

进一步分析了发动机额定转速下，活塞的运动姿态和敲击过程，揭示出活塞敲击噪声的产生过程。

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The new engine is rated at 300 HP at 5800 RPM and 300 lb-ft of torque.

新发动机的额定电压为300马力，在5800转和300磅英尺的扭矩。

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The comparison between improved and original engine was carried out. The results show that the start performance, stability and emission at rated conditions can reach the level of the original engine.

在此基础上自行完成电控单元的设计，并在发动机台架上进行了对比试验，起动、稳定性控制和标定点排放指标都达到原机电控单元控制水平。

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Downey is a commercial multi-engine rated pilot.

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Although heaters are minimized to conserve battery range, Consumer Reports rated a Volt test car at a paltry average 25 miles of electric-only running before the gasoline engine kicked in under cold Connecticut winter conditions.

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