The new (enviromental) direction of Diesel locomotives……….
For those who care about the environment (everyone should...), here ia a little info about the direction Union Pacific is taking.
Union Pacific Railroad is using 60 new environmentally friendly ultra-low emission diesel locomotives in its Los Angeles Basin rail yards. This is part of UP's efforts to reduce emissions.
The new 2,100-horsepower locomotives (pictured) are called "Genset" switchers. Each locomotive has three 700 HP ultra-low emissions diesel engines and 2 of the 3 engines automatically start and stop as load requirements dictate. This is projected to reduce emissions of both NOX and particulate matter by up to 80 percent, while reducing fuel consumption up to 16% compared to current low-horsepower locomotives.
UP is currently testing another type of environmentally friendly low HP rail yard locomotive called the "Green Goat." It uses state-of-the-art diesel-battery hybrid-technology (similar to the Toyota Prius) to cut emissions by 80 percent and reduce fuel use by 16 percent compared to conventional diesel-powered locomotives. The hybrid switcher is powered with large banks of batteries. When energy stored in the batteries is depleted to a pre-set level, a small, low-emission diesel engine automatically starts to recharge the batteries. There are currently ten units in the Houston and Dallas-Fort Worth yards and 11 more in California, most of them in the Los Angeles area.
Union Pacific is also testing two types of "aftermarket" technologies to determine if they reduce emissions in older locomotives. They are:
#1 An experimental "oxidation catalyst", or "Oxicat," installed on an older, high (3,800 HP) long-haul locomotive that was built in 1992. The special catalytic material chemically reduces the amount of unburned hydrocarbons, carbon monoxide and particulate matter, much like a catalytic converter on today's cars and trucks.
#2 A Diesel Particulate Filter (DPF) was attached to a low-HP yard locomotive that is operating in UP's Oakland rail yard. This is North American rail industry's first experimental "after-market" exhaust system filter to determine if it will reduce diesel engine emissions in older locomotives used in rail yards.
