Comparison of Plasma-Catalyst and Lean NOx Catalyst for Diesel NOx Reduction Ford Research Laboratory

Format:

Conference/Event

Author/Creator:

Hoard, John, author.

Conference Name:

International Fuels and Lubricants Meeting and Exposition (2000-10-16 : Baltimore, Maryland, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2000

Summary:

Projected NOx and fuel costs are compared for a plasma-catalyst system and an active lean NOx catalyst system. Comparisons are based on modeling of FTP cycle performance. The model uses steady state laboratory device characteristics, combined with measured vehicle exhaust data to predict NOx conversion efficiency and fuel economy penalties.The plasma system uses a proprietary catalyst downstream of a plasma discharge. The active lean NOx catalyst uses a catalyst along with addition of hydrocarbons to the exhaust.For the plasma catalyst system, NOx conversion is available over a wide temperature range. Increased electrical power improves conversion but degrades vehicle fuel economy; 10 J/L energy deposition costs roughly 3% fuel economy. Improved efficiency is also available with larger catalyst size or increased exhaust hydrocarbon content.For the active lean NOx system, NOx conversion is available only in a narrow temperature range. Exhaust hydrocarbon levels must also be increased for good NOx conversion.The plasma catalyst system is projected to have better NOx efficiency, at the expense of a larger fuel economy penalty than the active lean NOx catalyst

Notes:

Vendor supplied data

Publisher Number:

2000-01-2895

Access Restriction:

Restricted for use by site license