Japanese National Railways (JNR) developed Kiha58 series diesel multiple unit (DMU) trains on express services. Kiha58 series were designed based on Kiha81 series DMU used on the intercity services.
The vehicle design was closely based on the 153 series EMU, with the primary
difference in discontinuing double-hang unit assembled windows and curved
surface windscreen of the end cars in order to reduce the cost. Wider bodies
than earlier DMU trains except Kiha81 series are constructed by steel.
All standard class vehicles are equipped with driver's cab in order to
realize flexible train formation. All vehicles can be used as intermediate
cars. The driver's cab was raised for the safety against crossing accident
and getting better sight. 1st class vehicles incorporate pairs of drop
windows and standard class vehicles incorporate raising windows. Kiha58
series incorporated a step at the doorway because they run on the lines
of which platforms are low. Door operating equipment is TK101A, which can
open manually and close automatically.
Standard bogies DT22A/TR51A for diesel multiple unit (DMU) vehicles are
adopted. Kiro28 (1st class intermediate car) and Kiha28 (Standard class
end car) are powered by one DMH17H prime mover rated at 180PS and Kiro58
(1st class intermediate car) and Kiha58 (Standard class end car) are powered
by 2 prime movers. The hydraulic transmission gear is TC2A (manufactured
by SHINKO ENGINEERING CO., LTD.) or DF115A. (NIIGATA ENGINEERING CO., LTD.)
1st class cars have adjustable reclining seats with 1160mm seating pitch.
Standard class cars have transverse seating bays with 1470mm seating pitch.
All vehicles have a washroom and a toilet. These cars are not air-conditioned.
Kiha58 series began to enter the services from 1961 and used all over Japan
except Hokkaido region.
Vehicles classified into Kiha58-300, Kiha28-200, and Kiro28-100, which
were introduced from 1963, incorporate minor brake improvement introducing
electrical control circuit in order to improve brake response. Bogies were
changed into DT22C/TR51B. Door operating equipment was changed into TK102,
which can open/close manually after automatic open. Kiro28-109 onwards
were prepared for fitting AU12 air conditioners. Kiro28-138 onwards were
equipped with AU13 air conditioners. They were quipped with a diesel generator
rated at 25kVA.
JNR began to fit air conditioners onto not air-conditioned Kith58 series. An additional diesel generator rated at 70kVA in order to supply electricity to three air-conditioned vehicles including itself was fitted to Kiha28 vehicles, which were classified into -2000 sub-type.
Although about 1,800 vehicles of Kiha58 series were delivered and used
all over Japan, Kiha58 series are decreasing because express services are
decreasing and Kiha58 series become too superannuated to use. The last
remaining vehicles were withdrawn in 2018. |
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