For Higher Wash Coat Loads, Enabling Integrated NOx Emissions Control Solutions in Light-Duty Diesel Systems.
Vehicle and engine manufacturers worldwide are striving to improve the fuel efficiency and performance of diesel engines while meeting NOx, soot particle mass, and soot particle number emissions limits under real-world driving conditions. Integrating SCR catalysts on diesel particulate filters is a leading approach to meet emerging challenges with a compact, fuel-efficient, high-performance solution.
Product Highlights
Product Highlights
Corning® DuraTrap® AT HP filters are designed with a higher porosity and optimized microstructure. This enables low backpressure at high washcoat loads and excellent filtration efficiency under all driving conditions.
Corning’s aluminum titanate material provides low thermal expansion to enable durable monolithic construction. Our monolithic design allows:
- Low pressure drop and excellent regeneration efficiency to help improve fuel consumption
- Increased ash storage capacity and about 12% larger filtration surface area compared to segmented filters
- More effective utilization of washcoat
Filter shape can be optimized for systems with space constraints and diverse configurations. Corning’s innovative asymmetric cell technology (ACT) option can help manage lifetime pressure drop requirements and provides ash storage benefits through larger inlet channels.
DuraTrap® AT HP Product Comparison
Excellent Filtration Efficiency
Excellent Filtration Efficiency
Particle number filtration efficiency for DuraTrap® AT HP filters is in line with current generation DuraTrap® AT LP filters.
Particle number filtration efficiency for DuraTrap® AT HP filters is in line with current generation DuraTrap® AT LP filters.
Corning's HP filters enable significantly greater wash coat loading at equivalent pressure drop.
Corning's HP filters enable significantly greater wash coat loading at equivalent pressure drop.
DuraTrap® AT LP Filter (existing low porosity product line) | DuraTrap® AT HP Filter (new high porosity product line) | |
|---|---|---|
| Porosity | ~45% | ~60% |
| Washcoat load at equivalent Δp | Base | >5x |
| Filtration efficiency | Base | = |
Low Backpressure
Low Backpressure
Corning’s high-porosity filters showed significant pressure drop benefits over commercially available silicon carbide products with similar coatings and coating levels.
Corning’s high-porosity filters showed significant pressure drop benefits over commercially available silicon carbide products with similar coatings and coating levels.
The charts and graphs used in this publication are based on data from experimental and limited tests conducted under controlled laboratory conditions, measurements, and calculations sponsored by Corning. Corning can provide additional calculations or test results based on specific operating conditions.