Crankcase Breather - Valve Cover Integrated Breathers with Closed Crankcase Ventilation
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图 1 | g06228290 |
(1) 通气孔组件
(2) 分离器组件 |
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图 2 | g06228288 |
(1) 通气孔组件
(2) 分离器组件 |
曲轴箱通风系统为窜气烟气排出曲轴箱提供一条可接受通道,同时调节曲轴箱压力和减少排气含油。 选装的高效烟气排放系统利用分离器组件对曲轴箱窜气烟气进行过滤。 如果适合于使用寿命,可维修部件会显著提高标准烟气排放系统的过滤效率。 窜气烟气通过气门室盖集成呼吸器排出曲轴箱,然后进入分离器组件,以排除油气溶胶和颗粒物。 然后,经过过滤的窜气烟气经排放软管释放到周围环境中。
曲轴箱通风系统为窜气烟气排出曲轴箱提供一条可接受通道,同时确保曲轴箱压力和排气含油保持在可接受限值范围内。 典型的未过滤系统由一个或多个呼吸器和适当数量的排放管组成。 呼吸器的主要功能是排除窜气蒸汽中的大部分油滴,同时排放管将窜气蒸汽引入适当的释放位置。
选装的高效烟气排放系统利用分离器组件和气门室盖集成呼吸器(VCIB)对曲轴箱窜气烟气进行过滤。 与传统呼吸器相比,VCIB 增加了流量、提高了耐用性和效率稳定性,同时无需进行定期清洁或保养。 另外,VCIB 是一个不可维修的正常运转部件,只需要在每次发动机整体大修时进行更换(假设为标准发动机操作)。 利用内部媒体进行篡改可能会导致永久性损坏,导致附近系统出现故障(配气机构、润滑系统等)。
分离器组件包括可维修滤清器,可显著改善标准烟气排放系统的过滤效率。 窜气烟气通过气门室盖集成呼吸器排出曲轴箱,然后进入分离器组件,以排除一定百分比的油气溶胶和颗粒物。 然后,经过过滤的窜气烟气经排放软管释放到适当位置。
曲轴箱通风系统的主要诊断程序是监控曲轴箱压力。 只要曲轴箱压力保持在规定的限值范围内,系统就会正常运行。 如果曲轴箱压力超过规定的限值,应由经过培训的技师对该问题进行故障诊断与排除。
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