产品范围

  • 客车发动机的凸轮轴
  • 用于商用车发动机、工业机械发动机和燃气发动机
  • 用于农业和林业机械发动机
  • 凸轮轴附件,例如:
    • 阀门挺杆
    • 挺杆
    • 摇臂
    • 摇臂支座

产品聚焦 - 优势

  • 凸轮轴由曲轴驱动,并控制发动机的气门驱动。它确保进气和排气阀在预定的时间开启和关闭。
  • 气门开启持续时间、气门行程及气门在开启和关闭过程中的运动均由凸轮形状确定。
  • 凸轮轴会因为长时间运行,在发动机疏于维护或在不利的运行条件下造成损坏或磨损时,就必须将其更换。
  • 为确保新安装的凸轮轴具有更长的使用寿命,我们建议您同时更换以下部件:
    • 挺杆
    • 推动杆
    • 密封组件
    • 凸轮轴轴承
    • 模座挺杆
  • 在约 60% 的商用车发动机和工业机械发动机中,凸轮轴位于曲轴箱下方。进气和排气凸轮通过挺杆和摇臂控制气缸盖的进气和排气阀,从而控制发动机中的换气。
  • 新型商用车发动机和客车发动机具有顶置凸轮轴。  在直列发动机中可安装多达两个凸轮轴,在 V 型发动机中最多可安装四个凸轮轴。
  • 凸轮轴具有相当大的弯曲度和扭转度。U为了长时间应对这些高度形变,凸轮轴具有高强度的性能。根据不同的使用目的使用铸造或锻造凸轮轴。

版本

标准凸轮轴

凸轮轴驱动进气阀和排气阀。

进气凸轮轴

当安装两个凸轮轴时,进气凸轮轴仅驱动进气阀。为了实现最大进气量,进气凸轮轴的凸轮动程通常比排气凸轮轴的动程大。

排气凸轮轴

与进气凸轮轴类似,排气凸轮轴仅驱动排气阀。相对于进气凸轮轴而言排气凸轮轴行程较短,便于在排气处产生较高的压力差,便与其导出燃烧后的废气。

组合式凸轮轴

用于 PLD 喷油系统的 3 个凸轮:

  • 进气凸轮
  • 排气凸轮
  • 用于驱动泵或泵喷嘴的凸轮

顶置凸轮轴

在顶置凸轮轴系统中,阀门直接由凸轮通过挺杆、摇臂或牵引杆开启。顶置凸轮轴只配用多缸气缸盖。

下置凸轮轴

在下置凸轮轴系统中,挺杆和推动杆将凸轮轴的行程传递至摇臂。摇臂凭借阀门弹簧的作用力开启阀门。

 

1 阀门弹簧
2 阀门
3 摇臂
4 挺杆
5 挺杆
6 凸轮轴

 

 

凸轮轴配件

  • 凸轮轴应始终与配套滑动偶件一起更换,以避免由于滑动偶件磨损而出现损伤。
  • 配套的气门控制元件(滑动偶件),例如:挺杆、摇臂或气门间隙补偿元件均可单独获得。
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