EMD F59PHI

The EMD F59PHI emerged in 1994 as a refined, fully streamlined variant of the earlier F59PH commuter locomotive, developed by General Motors Electro-Motive Division to meet the demands of intercity passenger services on the West Coast of the United States. The first nine units entered service that year with Caltrans, assigned to Amtrak California corridor routes, and established the model's association with state-supported intercity rail operations. Over the following seven years, EMD produced a total of 84 locomotives in the series, delivering them to a variety of operators running commuter and intercity services, primarily in California, Oregon, and Washington state. An unusual chapter in the F59PHI's history involved two units constructed in 1995 for Philip Morris Companies to power a privately operated luxury excursion train called the Marlboro Unlimited, intended to transport sweepstakes winners on tours across the country. When Philip Morris canceled the project, the two locomotives sat unused before being acquired by Metrolink in 1998 and placed into conventional commuter service in Southern California. The broader fleet continued to see wide deployment through the late 1990s and into the 2000s, becoming a familiar sight on Amtrak Cascades, Pacific Surfliner, and San Joaquin services. By 2018, the 21 Amtrak-owned units had been sold to Metra in the Chicago region, extending the working lives of locomotives that had spent their early careers on western passenger corridors. The F59PHI's legacy rests substantially on its role in modernizing the visual and operational character of American intercity passenger rail during the 1990s. Its distinctive streamlined profile set it apart from the more utilitarian appearance of the F59PH and helped define the aesthetic of state-sponsored rail services in California and the Pacific Northwest during a period of growing investment in corridor passenger operations.

The F59PHI is a four-axle diesel-electric locomotive riding on a B-B wheel arrangement and producing 3,000 horsepower from an EMD 12-cylinder 710G3B two-stroke turbocharged prime mover. The locomotive operates with direct current traction, transmitting power to four axle-mounted traction motors. Like its predecessor the F59PH, the F59PHI carries a separate head-end power generator to supply electrical service to passenger cars, with that generator rated in the range of 500 to 750 kilowatts, enabling it to support the heating, cooling, and lighting needs of a consist without drawing on the main prime mover's output. The most visually significant engineering departure of the F59PHI from earlier F59 variants is its fully enclosed streamlined carbody, which wraps the mechanical components in a smooth, aerodynamically shaped shell more akin to a passenger car in profile than a conventional locomotive hood. Most units in the series were assembled at the General Motors Diesel plant in London, Ontario, though Super Steel Products in Schenectady, New York, handled the assembly of some locomotives. The combination of a modern propulsion package with integrated head-end power capability and a purpose-designed passenger carbody made the F59PHI well suited to the demanding schedules and equipment standards of state-operated corridor services.

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