Background and overview
JR Kyushu developed class DF200-7000 diesel locomotive for hauling "Seven Stars in Kyushu" luxury excursion train in 2013, based on class DF200-100 developed by JR Freight and having long period of working.
Car body
Its body features double ended boxcab style constructed by steel. Their body skin features weatherproof high-tension steel sheet for anti-corrosion improvement. Its roof plate is detachable for mounting/dismounting equipments fitted inside its body. The both ends are no gangwayed, feature dogleg streamline shape, and have three round shaped LED headlights above its windscreens. They also have two round shaped LED tail lights and two round shaped LED headlights in left and right below its windscreens. Hinged doors for the train crew are located at the right front and toward middle of the vehicle. It has also a gold-plated dummy grill on the centre of the front, and a gold-plated name plate on the front and the side of its body.
Inside of the vehicle is divided into 3 rooms. A room at the centre is
equipped with radiators to cool the coolant of the prime mover. Two rooms
located at the both end of the centre room are equipped with a prime mover,
a traction alternator, a traction system, and an ancillary power supply
unit. Thus, two heat exhaust fans are fitted on the roof at the center
of the body. Two rectangular louver windows for the ventilation are fitted
on the outside wall and two vertically long louver windows for radiators
are fitted between louver windows for the ventilation. It is also equipped
with fuel tanks, air reservoir tanks, and braking resistors. Its couplers
are changed into type H tightlock couplers featuring a double-action buffer
to absorb the shock caused by the pushing and pulling forces. Its livery
is glossy wine red.
Bogies
Bogies are FDT100 for outer and FDT101 for centre. Their bogies feature bolster-less secondary air suspension, axle arm type journal box supporting system, and the Z link traction device with low centre pivot. These bogies adopt the yaw dampers to ensure smooth ride characteristics even at 110km/h. An air suspension cover is fitted for antifreezing. Their brake rigging is single tread brake device having brake shoe made of sintered alloy. Their drive unit features single reduction axle-hung. The gear ratio is 4.82. A roller bearing is employed for motor suspension bearing of the nose suspended motor in order to improve meshing precision, provide maintenance free, and prevent galling.
Traction unit and ancillary equipments
The fleet is equipped with two light weight and high power water-cooled four-cycle V12-cylinder direct injection diesel engine, SDA12V170-1 of Komatsu, Japan, employing intercooler and supercharger to realize a power output of 1800PS. They are also equipped with two revolving field type brush-less alternators, FDM301, which are developed by Toshiba and feature self-ventilation cooling, with a power output of 1550kVA. Three-phase alternating current supplied from alternators is rectified with the diode to supply to the variable frequency drive traction system. Nose-suspended traction motors, FMT100, with a power output of 320kW are controlled by the traction system, PC300K, on axle basis, employing Insulated Gate Bipolar Transistor (IGBT).
Its independent brake which makes brake applications on the head-of-train locomotive employs the electric commanding brake with the rheostatic brake. On the other hand, automatic brake which provides service and emergency braking control for the entire train is controlled by the pressure reduction of the brake pipe depending on the notch command signal.
Extensive test and revenue services
DF200-7000 was delivered to Oita depot and has been used on "Seven
Stars in Kyushu" luxury excursion train from 2013. |
|
| Technical Data |
| Items |
Data |
| Traction
transmission |
Electric |
| Service
speed |
110km/h |
| Max power |
3,600PS |
| Length |
19,600mm |
| Width |
2,944mm |
| Total
mass |
96.0t |
| Axles
location |
B0-B0-B0 |
| Bogie |
FDT100 (End), FDT101 (Intermediate) |
| Prime mover |
SDA12V170-1 (1,800PSx2/1800rpm) |
| Generator |
FDM300 |
| Traction motor |
FMT100 (320kW) |
| Traction system |
PC300K |
| Drive (Gear ratio) |
nose suspended drive (4.27) |
| Designed
by |
JR Kyushu |
|
|
