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Re: UP loco auction today -- Trucking emissions issues
Author: BOB2
Date: 09-30-2013 - 16:07
There are a number of tier 4 compliant prime movers, using various control technologies, and SCR, available, or claiming upgradability for locomotives. Many appear to be very reliable and more fuel efficient. Tier 3 engines are well proven, more reliable, and today are over 90% cleaner than the locomotive fleet average emissions (primarily NOX, SOX, and particulates) was in 1993.
Cleaner diesel fuel is one of the key problems (garbage in=garbage out) and also presents a serious cost issue. Higher quality low/no sulfur and very low aromatic content diesel is expensive, well over twice as expensive on a gallon/btu mileage equivalent basis as CNG.
Natural gas (CNG) tier 3 and tier 4 compliant engines with very high reliability are increasingly replacing diesel truck engines in many "fixed base" trucking fleet operations. A network of "over the road" CNG truck fueling station are now being constructed in a several long distance trucking corridors.
CNG does work for RR's and has been tested. Large scale implementation issues include fueling infrastructure. fuel capacity, and crash worthiness issues.
Cleaner diesel fuel is one of the key problems (garbage in=garbage out) and also presents a serious cost issue. Higher quality low/no sulfur and very low aromatic content diesel is expensive, well over twice as expensive on a gallon/btu mileage equivalent basis as CNG.
Natural gas (CNG) tier 3 and tier 4 compliant engines with very high reliability are increasingly replacing diesel truck engines in many "fixed base" trucking fleet operations. A network of "over the road" CNG truck fueling station are now being constructed in a several long distance trucking corridors.
CNG does work for RR's and has been tested. Large scale implementation issues include fueling infrastructure. fuel capacity, and crash worthiness issues.
