High Performance Gasoline Particulate Filters at Zero and Low Mileage

摘要

1.Washcoat loading lowered clean filtration efficiency.2. When loaded with soot, coated filters showed a faster increase in efficiency than blank, however, accompanied with faster backpressure.3.Ash improved initial filtration efficiency significantly, with only a mild backpressure increase. Ash also improved soot filtration efficiency and relieved the steep pressure increase during soot loading4.Understanding interaction between washcoat and soot particles and optimization of coating technique are needed.5.How to utilize ash or similar structure to improve GPF performance.