PKP class SP45
      
SP45| | Type and origin | 
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 | Power type | Diesel-electric | 
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 | Builder | Cegielski | 
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 | Build date | 1970–1976 | 
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 | Total produced | 268 | 
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| | Performance figures | 
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 | Maximum speed | 120 km/h (75 mph) | 
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 | Power output | 1,750 hp (1,300 kW) | 
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 | Tractive effort | 320 kN (72,000 lbf) | 
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 | 
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SP45 is the name for a Polish diesel locomotive. It was built for the purpose of passenger traffic.
No operating examples of this loco remain. All have been phased out or rebuilt into SU45.
History
In the early 1960s in Poland an urgent need became apparent to introduce locomotives capable of servicing passenger traffic on main and secondary rail routes. The number of steam locomotives was shrinking and electrification was far too slow to introduce electric locos on a large scale.
Prototypes
In the second half of the 1960s a few models of a new locomotive, with Co-Co bogies and electric transmission, were built at the Hipolit Cegielski Metal Works in Poznań. In general, all prototypes differed by engine-alternator combination. The final decision was to use a Fiat-licensed engine and an Alsthom-licensed alternator.
Introduction
The first locos were assigned to the Poznań railway district, and on successfully passing the necessary tests, they entered service in Warsaw. Between 1970 and 1976, a total number of 265 locomotives were produced. This type served on all main routes in Poland
Production
| Locomotive numbers | Producer | Production years | Quantity | 
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| 001 - 268 | Cegielski (Poznań) | 1970–1976 | 268 | 
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Present days
All locomotives of this type were rebuilt into SU45 (with a new heating system) or phased out.
Locomotive assignment
| Locomotives numbers | Operator | Remarks | 
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| 139 | Kościerzyna - heritage park | as an exhibit | 
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Nicknames
These locomotives used to be called the following names:
- Fiat - because of diesel engine licensed by Fiat
- Suka (eng. bitch) - from the two first letters of the code name (SUka)
See also
External links
| Polish State Railways' locomotives | 
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| Diesel | | Standard gauge |  | 
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 |  |  | Narrow gauge |  | 
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| Electric |  | 
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| Steam | | Standard gauge |  | 
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 |  |  | Narrow gauge | 
 Las47 Px27 Px29 Px38 Px48 Px49 Tw47 Tw53 Tx23 Tx26
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| Multiple units | | Electric |  | 
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 |  |  | Diesel | 
 222M SN51 SN52 SN60 SN61 SD80 SN80 SN81 SA101 SA102 SA103 SA104 SA105 SA106 SA107 SA108 SA109 SA110 SA131 SA132 SA133 SA134 SA135 SA136 SA137 SA138 SA139
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| Series withdrawn from service shown in italics |