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Tier 2 Useful Life (120,000 miles) Exhaust Emission Results for a NOx Adsorber and Diesel Particle Filter Equipped Light-Duty Diesel Vehicle

Description: Investigates the emission control system performance and system desulfurization effects on regulated and unregulated emissions in a light-duty diesel engine.
Date: May 1, 2006
Creator: Tatur, M.; Tomazic, D.; Thornton, M.; Orban, J. & Slone, E.
Partner: UNT Libraries Government Documents Department

APBF-DEC NOx Adsorber/DPF Project: Light-Duty Passenger Car Platform

Description: A 1.9L turbo direct injection (TDI) diesel engine was modified to achieve the upcoming Tier 2 Bin 5 emission standard in combination with a NOx adsorber catalyst (NAC) and a diesel particulate filter (DPF). The primary objective for developing this test bed is to investigating the effects of different fuel sulfur contents on the performance of an advanced emission control system (ECS) in a light-duty application. During the development process, the engine-out emissions were minimized by applying a state-of-the-art combustion system in combination with cooled exhaust gas recirculation (EGR). The subsequent calibration effort resulted in emission levels requiring 80-90 percent nitrogen-oxide (NOx) and particulate matter (PM) conversion rates by the corresponding ECS. The strategy development included ean/rich modulation for NAC regeneration, as well as, the desulfurization of the NAC and the regeneration of the DPF. Two slightly different ECS were investigated and calibrated. The initial vehicle results in an Audi A4 station wagon over the federal test procedure (FTP), US 06, and the highway fuel economy test (HFET) cycle indicate the potential of these configuration to meet the future Tier 2 emission standard.
Date: August 24, 2003
Creator: Tomazic, D; Tatur, M & Thornton, M
Partner: UNT Libraries Government Documents Department

Full Useful Life (120,000 miles) Exhaust Emission Performance of a NOx Adsorber and Diesel Particle Filter Equipped Passenger Car and Medium-duty Engine in Conjunction with Ultra Low Sulfur Fuel

Description: Discusses the full useful life exhaust emission performance of a NOx (nitrogen oxides) adsorber and diesel particle filter equipped light-duty and medium-duty engine using ultra low sulfur diesel fuel.
Date: August 25, 2005
Creator: Thornton, M.; Tatur, M.; Tomazic, D.; Weber, P. & Webb, C.
Partner: UNT Libraries Government Documents Department