It is well known that high-efficiency wall-flow particulate filter is the most commonly used technology that can effectively reduce both particulate matter (PM) and particulate number (PN) to comply with the latest emission legislations. Ash, defined as the noncombustible, non-evaporative residue derived mostly from lubricants, has critical impact on engine backpressure, particulate filter filtration efficiency and durability performance, therefore, the investigation of ash impact on particulate filter is of great importance. Due to cost-saving potential, several published methods from different laboratories for accelerated ash loading under carefully controlled conditions are described in this review, including some characterization methods that have been used for the evaluation of filter performance. In addition, the impact of ash deposit on back pressure and regeneration performance are also discussed in this review.

众所周知，高效壁流式颗粒过滤器是最常用的技术，可以有效地减少颗粒物（PM）和颗粒数（PN），以符合最新的排放法规。灰分定义为主要来自润滑剂的不可燃，非蒸发性残留物，对发动机背压，颗粒过滤器的过滤效率和耐久性能具有至关重要的影响，因此，研究灰分对颗粒过滤器的影响非常重要。由于节省成本的潜力，本综述介绍了来自不同实验室的几种在谨慎控制的条件下加速灰分加载的已公开方法，包括一些用于过滤器性能评估的表征方法。此外，