In 1957 Japanese National Railways (JNR) developed Kiha20 series suburban diesel multiple unit (DMU) trains and delivered to all over Japan instead of earlier Kiha17 series. Kiha25 vehicles are two car unit, and the other types of vehicles are single car unit. Kiha21 vehicles were built for extreme cold region.
They differ from the kiha17 series, in having 200mm wider and 180mm higher
body. Their body design incorporating pressed forming beam for light weight
realize same weight as smaller size kiha17 series. They are equipped with
2 single leaf doors on each side of the vehicles. They incorporated a step
at the doorway because they run on the lines of which platforms are low.
Single hung windows having fixed windows above them are fitted, such as
kiha17.
Kiha20 series feature DT19C/TR49A bogies, a DMH17C prime mover rated at
160PS, and TC2/ DF115 hydraulic transmission gear.
Seating is a mixture of transverse seating and longitudinal bench seating. Their seat pitch extended to 1470mm compared to 1430mm on Kiha17 series. All vehicles are equipped with a Japanese style toilet.
Kiha20 series built from 1958 were classified into -200 subseries and differ
from the earlier Kiha20 series in having lower cost body featuring lightweight
shaped steel and double hung windows to improve ventilation.
Bogies were changed into DT22A/TR51A featuring coil spring to ensure smooth
ride characteristics. The traction engine was changed into more powerful
DMH17C prime mover rated at 180PS. Since Kiha21 vehicles had worse protection
against cold, Kiha22 was developed for Hokkaido region, having vestibules
at the end section and sealed double-glazed windows.
Kiha20 series built from 1960 were classified into Kiha20-500, Kiha22-200, and Kiha25-300 and differ from the earlier Kiha20 series in having fluorescent lighting and minor improved bogies, DT22C/TR51B.
JNR transplanted the prime mover and bogies of earlier Kiha20-0 series
vehicles to DMH17C rated at 180PS and DT22B/TR51A featuring coil spring
to improve the running performance and ensure smooth ride characteristics.
Kiha20 series vehicles were gradually displaced with kiha40 series DMU
trains or other JR's new generation DMU trains. Some vehicles transferred
to privately-owned railways remain in service now. |
|
| Technical Data |
| Items |
Data |
| Service
speed, etc. |
Service
speed: 95km/h |
| Length |
20000mm |
| Width |
2828mm |
| Height |
3925mm |
| Bogie |
DT19C, DT22A,
DT22C (motored) TR49A, TR51A, TR51B (trailer) |
| Prime mover |
DMH17B (160PS), DMH17C (180PS) |
| Transmission |
TC2 or DF115 |
| Air conditioner |
None |
| Designed
by |
Japanese National Railways |
|
|
