Altoona Works BP4

Altoona Works BP4
Type and origin
Power type Battery-electric
Builder Altoona Works
Specifications
AAR wheel arr. B-B
Gauge 4 ft 8 1⁄2 in (1,435 mm)
Performance figures
Power output 1,350 hp (1,010 kW)

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.

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 continues 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.

References