Advanced Engine/Aftertreatment System R&D

Technical Report · Fri Sep 30 04:00:00 EDT 2011

DOI:https://doi.org/10.2172/1027864· OSTI ID:1027864

Pihl, J.; West, B.; Toops, T.; Adelman, B. ^[1]; Derybowski, E. ^[1]

---

1. Navistar, Inc.

Navistar and ORNL established this CRADA to develop diesel engine aftertreatment configurations and control strategies that could meet emissions regulations while maintaining or improving vehicle efficiency. The early years of the project focused on reducing the fuel penalty associated with lean NOx trap (LNT, also known as NOx adsorber catalyst) regeneration and desulfation. While Navistar pursued engine-based (in-cylinder) approaches to LNT regeneration, complementary experiments at ORNL focused on in-exhaust fuel injection. ORNL developed a PC-based controller for transient electronic control of EGR valve position, intake throttle position, and actuation of fuel injectors in the exhaust system of a Navistar engine installed at Oak Ridge. Aftertreatment systems consisting of different diesel oxidation catalysts (DOCs) in conjunction with a diesel particle filter and LNT were evaluated under quasi-steady-state conditions. Hydrocarbon (HC) species were measured at multiple locations in the exhaust system with Gas chromatograph mass spectrometry (GC-MS) and Fourier transform infrared (FTIR) spectroscopy.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE EE Office of Vehicle Technologies (EE-2G)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1027864
• Report Number(s): ORNL00-0605
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
33 ADVANCED PROPULSION SYSTEMS
CATALYSTS
DIESEL ENGINES
EFFICIENCY
ENGINES
EXHAUST SYSTEMS
HYDROCARBONS
MASS SPECTROSCOPY
ORNL
OXIDATION
REGENERATION
REGULATIONS
SPECTROSCOPY
TRANSIENTS
VALVES
diesel engines
emissions control