New BNSF ES44DC #7663 at Commerce, California on February 21, 2005.

The Evolution Series are GE Transportation Systems' new diesel locomotive models that meet the U.S. EPA's Tier II locomotive emissions standards that took effect in 2005. The Evolution Series locomotives can be delivered with either AC or DC transmission, depending on the railroad's preference. All are powered by the new GEVO 12-cylinder engine which delivers equivalent power to the old 16-cylinder engine while consuming less fuel and producing fewer emissions. An eastbound BNSF Railway train passes some maintenance of way equipment in Prairie du Chien, Wisconsin, August 8, 2004. ... Commerce is a city located in Los Angeles County, California. ... February 21 is the 52nd day of the year in the Gregorian Calendar. ... 2005 is a common year starting on Saturday of the Gregorian calendar and is the current year. ... GE Transportation Systems is the division of the General Electric corporation producing railroad locomotives and electrical and propulsion equipment for transit cars. ... Great Western Railway No. ... Wikiquote quotations related to: United States Wikinews has news related to this article: United States United States government Official website of the United States government - Gateway to governmental sites White House - Official site of the US President Senate. ... EPA redirects here. ... 2005 is a common year starting on Saturday of the Gregorian calendar and is the current year. ...

Models

Currently three different Evolution Series models have been produced.

ES40DC

The ES40DC (Evolution Series 4000 hp DC transmission) replaces the former Dash 9-40CW model in GE's range and, like the former model, has been delivered only to Norfolk Southern. NS appears to prefer a slightly lower-rated locomotive than other railroads. Norfolk Southern Corporation (AAR reporting mark NS) (NYSE: NSC) is a US publicly-traded stock corporation based in Norfolk, Virginia. ...

ES44DC

The ES44DC (Evolution Series 4400 hp DC transmission) replaces the former Dash 9-44CW model in GE's range. A large order for these locomotives has been placed by the Burlington Northern Santa Fe Railway, which began to be delivered in early 2005. BNSF Dash 9-44CW #5518 at the Port of Long Beach. ... An eastbound BNSF Railway train passes some maintenance of way equipment in Prairie du Chien, Wisconsin, August 8, 2004. ... 2005 is a common year starting on Saturday of the Gregorian calendar and is the current year. ...

ES44AC

The ES44AC (Evolution Series 4400 hp AC transmission) replaces the former AC4400CW model in GE's range. These locomotives have been ordered by both the Union Pacific Railroad (who refers to these locomotives as the C45ACCTE) and the BNSF, and deliveries to both are ongoing as of 2005. The Union Pacific Railroad (NYSE: UNP) is the largest railroad in the United States. ... 2005 is a common year starting on Saturday of the Gregorian calendar. ...

Identification and spotting features

The Evolution Series locomotives very much resemble the previous Dash 9 and AC series safety cab models in superficial appearance. Both AC and DC models have the large cabinet behind the crew compartment on the left-hand side which on the AC models houses the traction inverters. The previous Dash 9 models had a much smaller cabinet here than the AC models did. It is thus difficult to distinguish the DC and AC versions of the Evolution Series. An inverter is a circuit for converting direct current to alternating current, they are used in a wide range of applications, from small power supplys for a computer to large industrial applications to transport bulk power. ...

Above this cabinet, at the top of the cab end of the long hood, there are four ventilation openings where previous models had three.

The lower-roofed engine compartment is shorter than on previous models, thanks to the shorter prime mover. Earlier models had substantial space between the exhaust stack and the radiator "wings", and this is lacking on the Evolution Series. For the philosophical/theological concept of a prime mover (that is, a self-created being that is the ultimate cause or mover of all things), see cosmological argument. ...

The radiator section is significantly longer than the previous models, and appears more bulky. Unlike the earlier radiators, it overhangs at the rear. The sloped underside has two sections with different slope angles, unlike the single previous angle. The front end on top has a raised 'hump' - this area houses the enlarged intercooler system fitted to these locomotives. An intercooler is a device used on turbocharged and supercharged internal combustion engines to improve the volumetric efficiency and increase the amount of charge in the engine, thereby increasing power. ...

Overall length appears to be shorter, but is the same, and the trucks and fuel tanks are identical.

On some Locomotives, a new "BNSF" logo replaces the other one. It appears as BNSF with a triangle extending under the legnth of the letters.

References

• NorthEast Rails. GE AC4400-6000 Diesel Railroad Locomotives (http://www.northeast.railfan.net/diesel129.html). Retrieved on February 23, 2005.
• GE Transportation Systems. Evolution Series locomotive (https://www.getransportation.com/general/locomotives/products/evolution.asp). Retrieved on February 23, 2005.

February 23 is the 54th day of the year in the Gregorian Calendar. ... 2005 is a common year starting on Saturday of the Gregorian calendar and is the current year. ... February 23 is the 54th day of the year in the Gregorian Calendar. ... 2005 is a common year starting on Saturday of the Gregorian calendar and is the current year. ...