An Experimental Study of Active Regeneration of an Advanced Catalyzed Particulate Filter by Diesel Fuel Injection Upstream of an Oxidation Catalyst

2006 ◽  
Author(s):  
Paramjot Singh ◽  
Abishek M. Thalagavara ◽  
Jeffrey Naber ◽  
John H. Johnson ◽  
Susan T. Bagley
Keyword(s):  
Experimental Study ◽  
Diesel Fuel ◽  
Fuel Injection ◽  
Oxidation Catalyst ◽  
Particulate Filter ◽  
Catalyzed Particulate Filter ◽  
Active Regeneration ◽  
Diesel Fuel Injection

Development of a Low Emissions Upgrade Kit for EMD GP20D and GP15D Locomotives

2012 ◽  
Author(s):  
Steven G. Fritz ◽  
John C. Hedrick ◽  
Tom Weidemann
Keyword(s):  
Fuel Injection ◽  
Diesel Oxidation Catalyst ◽  
Oxidation Catalyst ◽  
Particulate Filter ◽  
Injection Timing ◽  
Fuel Injection Timing ◽  
Tier 1 ◽  
Emission Regulations ◽  
Diesel Oxidation ◽  
Tier 3

This paper describes the development of a low emissions upgrade kit for EMD GP20D and GP15D locomotives. These locomotives were originally manufactured in 2001, and met EPA Tier 1 locomotive emission regulations. The 1,491 kW (2,000 HP) EMD GP20D locomotives are powered by Caterpillar 3516B engines, and the 1,119 kW (1,500 HP) EMD GP15D locomotives are powered by Caterpillar 3512B engines. CIT Rail owns a fleet of 50 of these locomotives that are approaching their mid-life before first overhaul. Baseline exhaust emissions testing was followed by a low emissions retrofit development focusing on fuel injection timing, crankcase ventilation filtration, and application of a diesel oxidation catalyst (DOC), and then later a diesel particulate filter (DPF). The result was a EPA Tier 0+ certification of the low emissions upgrade kit, with emission levels below EPA Line-Haul Tier 3 NOx, and Tier 4 HC, CO, and PM levels.

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