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Class 9020
A locomotive of Série 9020, at Livração station in May 1996
Type and origin
Builder
Alsthom
Total produced
4
Specifications
Configuration:
• AAR
B-B
• UIC
B' B'
Gauge
1,000 mm (3 ft 3+3⁄8 in)
Wheel diameter
950 mm (37.4 in)
Prime mover
S.A.C.M MGO V 12 ASHR
RPM range
1.500 RPM
Engine type
4-stroke Diesel
Displacement
54 L (54,000.0 cc)
Generator
Alsthom CC 830 H 10
Traction motors
Alsthom TA 641 M
Cylinders
V12
Cylinder size
175 mm × 192 mm (6.9 in × 7.6 in)
Transmission
Diesel-Electric
Gear ratio
79:14
MU working
Within class, up to 3
Train brakes
Westinghouse air brake,
Vacuum brake
Safety systems
VACM dead mans switch
Performance figures
Maximum speed
70 km/h (43.5 mph)
Power output:
• Starting
1,050 hp (783.0 kW)
• Continuous
1,000 hp (745.7 kW)
Tractive effort:
• Starting
11,500 kgf (25,353.2 lbf)
• Continuous
10,600 kgf (23,369.0 lbf)
Career
Operators
Comboios de Portugal
Class
Série 9020
Numbers
9001 - 9004
Locale
Portugal
First run
1975
Disposition
seven sold to Madarail
Main reference[1]
A former CP Class 9020 locomotive at Andasibe in Madagascar in 2005
Série 9020 was a class of metre-gauge diesel locomotives built by Alsthom for the Portuguese Railways (CP). They entered service in 1975. By the early years of the 21st century the metre-gauge lines on which they operated (such as the Corgo line and the Tua line) have now almost all been closed, resulting in the withdrawal of the locomotives. After their withdrawal, some of the locomotives were sold to Madarail in Madagascar.
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