Power type Battery-electric AAR wheel arr. B-B | Builder Altoona Works Power output 1,350 hp (1,010 kW) | |
Gauge 4 ft 8 ⁄2 in (1,435 mm) | ||
The Altoona Works BP4 is a 1,350 hp (1,010 kW) B-B battery-electric locomotive rebuilt by the Altoona Works of the Norfolk Southern Railroad. It is the result of a conversion of an existing EMD GP38-type locomotive. This involves replacing the existing prime mover with a set of 1080 12-volt lead-acid batteries, and associated control equipment.
Contents
Overview
Despite appearing somewhat similar to a conventional diesel electric locomotive, the BP4 has no diesel engine; battery charging is provided by plugging in an external power source. Battery life is extended by the use of regenerative braking, which returns power to the batteries. The BP4 is designed to operate 3 shifts on a single battery charge.
Production
Only 1 BP4 has been constructed so far, Norfolk Southern #999, converted from GP38 #2911 (former Conrail #7732).
Appearance
This conversion significantly alters the external appearance of the locomotive, with the cab (which is actually brand new) being moved forward on the frame to make room for a large louvered battery box, which takes the place of the locomotive's long hood. The fuel tank is similarly replaced with another battery box.
Development
BP4 development was undertaken by Norfolk Southern, along with Brookville Equipment, Penn State University, the United States Department of Energy, and the Federal Railroad Administration. Testing of this new technology continued through the end of 2009 at Norfolk Southern's Rose Yard in Altoona, PA. If considered successful, there are plans to build more copies and perhaps apply the technology to helper and road locomotives of the future.