The CP Class 9100 is a series of diesel-electric shunting locomotives operated by Comboios de Portugal (CP), the national railway company of Portugal. These locomotives were primarily designed for shunting (switching) operations within marshalling yards, stations, and industrial sidings, facilitating the movement of wagons and coaches for train formation, maintenance, or other internal railway services.
Overview The Class 9100 locomotives were introduced to modernize CP's shunting fleet and improve operational efficiency. Their robust design and reliable performance made them a staple in Portuguese railway operations for many decades.
Technical Specifications
- Type: Diesel-electric shunting locomotive
- Operator: Comboios de Portugal (CP)
- Manufacturer: Construções Metálicas Mague (CMM), Portugal, under license from General Motors Electro-Motive Division (EMD).
- Year Built: 1968–1969
- Number Built: 15 units (numbered 9101 to 9115)
- Gauge: 1,668 mm (Iberian gauge)
- Power Output: Approximately 400 kW (550 hp)
- Engine Type: General Motors 8-645-E (or similar EMD two-stroke diesel engine)
- Traction Motors: Four EMD D77 (or similar) DC traction motors
- Transmission: Electric (AC/DC)
- Axle Arrangement: Bo'Bo' (four axles, each independently driven)
- Top Speed: Typically around 60 km/h (37 mph), suited for shunting duties
- Weight: Approximately 70-75 tonnes
History and Service The Class 9100 locomotives were based on well-established EMD designs, adapted by CMM for the specific requirements and track gauge of the Portuguese railway network. They provided essential services in various major railway yards across Portugal, handling diverse shunting tasks from passenger coach movements to heavy freight wagon marshalling.
Over their long service life, these locomotives proved to be durable and relatively easy to maintain. While some units have been retired or put into storage as CP modernized its fleet with newer, more efficient designs, a number of Class 9100 locomotives remained in active service well into the 21st century, often performing departmental duties or being leased for industrial use. Their longevity is a testament to their sturdy construction and reliable EMD power plants.