Journal Article
Partial Flow Sintered Metal Filter as Part of a Tier 4 Emission Reduction Strategy
2012-09-10
2012-01-1731
Full flow particulate filters are a state of the art solution for many serial production diesel engine applications. They are very effective for removing ≻ 90% of particulate mass and ≻ 99% of the particulate number from the exhaust gas of diesel engines. Many diesel engines have to work at load profiles which necessitate active regeneration procedures to ensure continued engine operation and the reliability of the full flow particulate filter. Passive regeneration via NO₂, as a cost-effective solution, cannot be used as the sole method for all applications, due to restrictions such as, insufficient engine-out NOX/PM ratio, low exhaust gas temperature level or occasionally poor fuel quality. To meet the Tier 4 emission legislation casually partial flow particulate filters enable sufficient particulate reduction at boundary conditions where full flow DPF is not applicable.
