SAE 2014 Light Duty Emissions Control Symposium

Technical Session Schedule

Tuesday, December 9

PM Control
(Session Code: LDD300)

Room Salon ABCD  1:30 p.m.

Time Paper No. Title
1:30 p.m. ORAL ONLY
Filter Technologies for Gasoline Direct Injection Engine PN Emissions Reduction
Gasoline direct injection engines are attractive for their low CO2 emissions and high fuel efficiency; however, these engines produce significant particulate emissions relative to multiport injection engines. Many OEMs may require exhaust gas aftertreatment technologies to meet the proposed Eu6c particle number emissions regulations if system solutions are not viable. New filter technologies are being explored to lower PN emissions for GDI vehicles. In addition to providing high filtration capability, filters with low backpressure and good thermal survivability are required. Characterization and performance results for these advanced filter technologies will be presented.
Roychelle Ingram-Ogunwumi, Rajesh Bhargava, Natarajan Gunasekaran, Thorsten Boger, Dominik Rose, Corning
1:55 p.m. ORAL ONLY
PGM and Washcoat Chemistry Effects on Coated GPF Design
Gasoline particulate filters (GPFs) are being developed to enable compliance with the Euro 6c particulate number limit for gasoline direct injection engines. Applying a precious metal containing coating to the GPF has been found to improve soot combustion, enabling better passive regeneration under typical driving conditions. Furthermore, examples will demonstrate how coating the GPF with a three-way catalyst also provides benefits including system compactness and improved conversion efficiencies under transient and high speed driving conditions. The effects of PGM content and washcoat design on soot combustion and conversion activity will be discussed.
Chris Morgan, Johnson Matthey PLC
2:20 p.m. ORAL ONLY
Catalyzed Soot Filters (CSF) with H2S Control Functionality for Diesel LNT Systems
Lean NOx Trap (LNT) is one of the two NOx control technologies for diesel cars. However, LNT generates high levels of H2S during its desulfation process. We have successfully developed an advanced CSF technology that can effectively control the H2S emission and at the same time maintain its oxidation function for CO/HC. We will show engine and lab data for LNT+CSF system, discuss the chemistry for H2S control and illustrate the functional principle for CSF design.
Yuejin Li, BASF Corp.
2:45 p.m. ORAL ONLY
Lube Oil-Driven Ash Effects on Oxidation Reactivity of GDI Soot and GPF Performance
Lube oil-driven ash is inevitable for particulate filters and thus the filters need to be designed in consideration of ash loading. Since passive soot oxidation occurs at a high exhaust temperature range in GPF, ash behaviors in GPF are distinct from DPF. Our studies have shown that soot oxidation reactivity increases proportionally with increasing ash content in soot. The effect of ash loading on GPF pressure drop, filtration efficiency, and passive soot oxidation will be discussed.
Seungmok Choi, HeeJe Seong, Argonne National Laboratory
3:10 p.m. Panel
Panel Discussion