东风日产-轩逸

轩逸正时皮带还是正时链条

2019-03-02 作者：gufan

　　【太平洋汽车】日产全系发动机都是采用正时链条，轩逸作为旗下的一款车型，其发动机传动是正时链条，不采用正时皮带。

正时皮带：内侧有许多橡胶齿，使用这些橡胶齿和相应的旋转部件顶端的凹槽配合，使发动机曲轴能够拉动其他运转部件，并保持被驱动部件的同步。正时皮带噪音小，传动阻力小，传动惯性也小，可以提高发动机的动力和加速性能，并且容易更换。当然弊端也有，正时皮带是橡胶部件，是一种消耗品，随着发动机运转时间的增加，正时皮带和正时皮带附件（如正时皮带张紧器，正时皮带张紧器和水泵）将磨损或老化。此外，一旦正时皮带断裂，凸轮轴肯定不会按照正时运转。此时，阀门和活塞可能会造成严重的损坏。因此，必须按照规定的里程或时间更换同步皮带。
正时链条：整个系统由齿轮，链条和张紧装置组成，液压张紧器可以自动调节张力。链条的强度保持恒定并且在一生中不需要维护，这意味着它的寿命与发动机相同。它不仅可以提高安全性和可靠性，还可以降低发动机的使用和维护成本。可以说一举两得。当然弊端也有，正时链条的成本明显高于正时皮带。

（图/文/摄：太平洋汽车网古璠）

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