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VANOS (abbr. from German variable Nockenwellensteuerung) is an automotive variable valve timing system produced by BMW. ==Operation== VANOS is a variator system that varies the timing of the valves by moving the position of the camshafts in relation to the drive gear. The relative timing between inlet and exhaust valves is changed. At lower engine speeds, the position of the camshaft is moved so the valves are opened later, as this improves idling quality and smooth power development. As the engine speed increases, the valves are opened earlier: this enhances torque, reduces fuel consumption and lowers emissions. At high engine speeds, the valves are opened later again, because this allows full power delivery.〔http://www.bmw.com/com/en/insights/technology/technology_guide/articles/vanos_double_vanos.html〕 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「VANOS」の詳細全文を読む スポンサード リンク
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