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German Federal Railway V 320 (Henschel DH 4000)
later class 232, Soviet Railways ТГ400 and China Railway NY5 to NY7
Germany | 1962 | 32 produced
232 001 in 1968 west of Munich-Aubing with an express train
232 001 in 1968 west of Munich-Aubing with an express train
Periphrastika

Since the Bundesbahn decided at the end of the fifties to electrify all important main lines, the six-axle diesel locomotive was dropped from the program. It was intended for heavy express and freight trains and was to achieve an output of 3,200 hp. At that time, Henschel had already started developing the V 320 and was now continuing it at their own expense.

The locomotive drew its power from two sixteen-cylinder Daimler Benz (later MTU) engines with 1,600 hp each. The two propulsion systems were independent of each other and could also be operated individually. Since passenger trains were also to be transported, the maximum speed was set at 160 km/h and train heating was installed. The car body already had angular shapes, which were also found later on the V 160 and the class 218.

The locomotive was designated DH 4000 by the manufacturer and was leased to the Bundesbahn after internal testing. From 1968 it was listed there as the class 232. Despite its good performance in service with express and freight trains, it was returned to Henschel in 1974, as no purpose for diesel locomotives of this power class was seen.

This was followed by a rebuild to a pure freight locomotive, in which the maximum speed was reduced to 120 km/h and the train heating was removed. At the same time, the power per engine was increased to 1,900 hp. It was then sold to private companies, where it had to pull heavy freight trains. After being overhauled in Italy in 1995 and used there for some time, it was used by the German track construction company Wiebe between 1998 and 2015. Since 2020 it can be found in the museum in Wittenberge.

An almost identical locomotive was sold to the Soviet Union as the ТГ400 (TG400). Since they preferred diesel-electric locomotives and soon achieved comparable power outputs themselves, no more were ordered. Since China had not yet decided on a technology at that time, 30 units were bought. These were designated NY5, NY6 and NY7.

Variantas builtrebuilt
General
Built19621975
ManufacturerHenschel
Axle configC-C 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length75 ft 5 1/2 in
Wheelbase57 ft 9 5/16 in
Fixed wheelbase14 ft 3 1/4 in
Service weight277,782 lbs267,641 lbs
Adhesive weight277,782 lbs267,641 lbs
Axle load46,297 lbs44,533 lbs
Power
Power sourcediesel-hydraulic
Top speed99 mph75 mph
Starting effort61,148 lbf88,125 lbf
EngineMercedes Benz 16 V 652 TB 10
Engine type2x V16 diesel
Fuel1,141 us gal (diesel)1,321 us gal (diesel)
Engine output3,157 hp (2,354 kW)3,748 hp (2,795 kW)
Power Plant
Boiler
Calculated Values
diesel locomotive
freight
passenger
prototype
last changed: 06/2023
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