Testing of Catalytic Exhaust Emission Control Systems Under Simulated Locomotive Exhaust Conditions US Environmental Protection Agency

Format:

Conference/Event

Author/Creator:

McDonald, McDonald, author.

Contributor:

Nelson, Brian (Brian J.)

Sanchez, L. James

Schenk, Charles

Conference Name:

SAE 2011 World Congress & Exhibition (2011-04-12 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2011

Summary:

Exhaust emissions were evaluated for four different catalytic exhaust emission control systems. Each system utilized a diesel oxidation catalyst, a metal-substrate partial-flow diesel particulate filter, an iron-exchanged or copper-exchanged Y-zeolite catalyst for urea selective catalytic reduction, and an ammonia slip catalyst. A 5.9-liter diesel truck engine was modified to match the exhaust conditions of a four-stroke diesel locomotive engine meeting the current Tier 2 locomotive emissions standards. NOx emissions, CO₂ emissions and exhaust temperatures were matched to the eight locomotive "throttle notch" power settings while exhaust mass flow was maintained near a constant fraction of locomotive exhaust mass flow for each "throttle notch" position. Regulated and unregulated exhaust emissions were measured over a steady-state test cycle for each of the four systems at low hours and following accelerated thermal aging and accelerated oil ash accumulation. The resulting NOx emissions were at less than 50% of the future 1.3 g/bhp-hr Locomotive Tier 4 NOx standard for the emission control systems that were tested

Notes:

Vendor supplied data

Publisher Number:

2011-01-1313

Access Restriction:

Restricted for use by site license