盘式制动器的特点

2025-03-16 15:49:22
推荐回答(3个)
回答1:

目前盘式制动器在液力助力下制动力大且稳定,在各种路面都有良好的制动表现,其制动效能远高于鼓式制动器,而且空气直接通过盘式制动盘,故盘式制动器的散热性很好。但是盘式制动器结构相对于鼓式制动器来说比较复杂,对制动钳、管路系统要求也较高,而且造价高于鼓式制动器。 其实相对于盘式制动器来说,鼓式制动器的制动效能和散热性都要差许多,鼓式制动器的制动力稳定性差,在不同路面上制动力变化很大,不易于掌控。而且由于散热性不好,鼓式制动器存在热衰退现象。当然,鼓式制动器也并非一无是处,它便宜,而且符合传统设计! 在高速行驶中的轿车,由于频繁使用制动,制动器的摩擦将会产生大量的热,使制动器温度急剧上升,这些热如果不能很好地散出,就会大大影响制动性能,出现所谓的制动效能热衰退现象,这可不是闹着玩的,制动器直接关乎生命。仅从这一点上,您就应该理解为什么盘式制动器会逐步取代鼓式制动器了吧。目前,在中高级轿车上前后轮都已经采用盘式制动器!

回答2:

散热快,维修方便

回答3:

盘式制动器的工作原理是制动时,油液被压入内、外两轮缸中、其活塞在液压作用下将两制动块压紧制动盘,产生摩擦力矩而制动。
此时,轮缸槽中的矩形橡胶密封圈的刃边在活塞摩擦力的作用下产生微量的弹性变形。放松制动时,活塞和制动块依靠 密封圈的弹力和弹簧的弹力回位。由于矩形密封圈刃边变形量很微小,在不制动时,摩擦片与盘之间的间隙每边只有0.1mm左右,它足以保证制动的解除。又因制动盘受热膨胀时,其厚度只有微量的变化,故不会发生“托滞”现象。矩形橡胶密封圈除起密封作用外,同时还起到活塞回位和自动调整间隙的作用。如果制动块的摩擦片与盘的间隙磨损加大,制动时密封圈变形达到极限后,活塞仍可继续移动,直到摩擦片压紧制动盘为止。解除制动后,矩形橡胶密封圈将活塞推回的距离同磨损之前相同,仍保持标准值。

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