Class kiha141/kiha142
Background and overview
JR Hokkaido rebuilt kiha141/142 diesel multiple unit (EMU) pre-production vehicles from surplus class ohafu51 locomotive-hauled coaches in order to displace superannuated kiha22 and kiha56 DMU vehicles in 1990. They were 2-car sets consisting of a kiha141 and a kiha142.
Car body
Their underframe was modified to be rebuilt into DMU vehicles. The supporting
device for underfloor engine and the reinforcement of the doorway step
were introduced in order to be fitted with a prime mover and a hydraulic
transmission under their floor. The height of their bolster beams was also
reduced to be fitted with bogies for DMU. A hinged door located at the
front of the vehicle for the train crew was moved in order to change the
conductor's room into the cab. They were also equipped with windscreens,
headlights, taillights, and the obstacle deflector on the front of end
section. 4.5mm thick plate was welded on the cab end for the protection
and they employed raised driver's cab against obstacles at the level crossing.
The rear conductor's room was changed into the equipment room and hinged
doors located there were filled with the plate by welding. A toilet of
class kiha142 was also changed into a pneumatic equipment room. Two 1,000mm
wide stepped single leaf automatic sliding doors and double-paned windows
between the doors were carried from former class ohafu51 coaches. One exhaust
pipe of a prime mover was fitted inside the equipment room located at the
rear. The other exhaust pipe of class kiha142 was fitted in the pneumatic
equipment room. Their livery is light gray with light green and sky-blue
narrow bands below the windows and with a sky-blue narrow band above the
windows.
Bogies
They are equipped with a powered bogie, DT22D, and a trailer bogie, TR51C, transplanted from class kiha56, featuring pedestal guide type journal supporting system, coil springs secondary suspension, and 1-axle drive. Brake rigging is the single tread brake powered by the body mounted brake cylinder.
Traction unit and ancillary equipments
Class kiha141 vehicles are powered by a diesel prime mover, DMF13HS with a power output of 250PS, and class kiha142 vehicles are powered by two diesel prime movers. Their hydraulic transmission gear is DF115A or TC2A introduced some modifications to match to high power engines. Their hydraulic transmission is carried form class kiha27 or kiha56. They are also equipped with a generator, DM83A. Their brake system is the automatic (CL) air brake.
Accommodation
Seating is arranged as mixture of 8 transverse seating bays carried from class ohafu51 and longitudinal bench seating including seating converted from former transverse seating bays to ease boarding and alighting. Class kiha141 has 2+1 abreast transverse seating bays having 1470mm seating pitch at the centre of the vehicles. On the other hand, class kiha142 has 2+2 abreast seating bays having 1470mm seating pitch at the centre of the vehicles. Electric fans are fitted under the ceiling. They are vestibuled and class kiha141 vehicles are equipped with a Japanese style toilet toward front of the vehicles.
Additional delivery
14 mass production vehicles of class kiha141 and 14 mass production vehicles
of class kiha142-0 were delivered over the period from 1991 until 1993.
Kiha142 vehicles additionally modified from class ohafu51 coaches which
had already been equipped with modified circuits to control door operating
equipment manually was classified into -200 subclass in 1995.
Modification
JR Hokkaido added modified passenger door control circuits to a kiha142-14 vehicle in order to insert this vehicle into a kiha143 2-car set having buttons to open/close doors manually. Kiha142-201 having modified passenger door control circuits was also inserted into another kiha143 2-car set to make them a 3-car set.
Class kisaha144
Background and overview
JR Hokkaido rebuilt class kisaha144 trailer intermediate vehicles in order to be coupled with existing class kiha141 and class 142 DMU vehicles from surplus class ohafu51 locomotive-hauled coaches in order to provide additional capacity for the overcrowded Sassho line trains. Three class kisaha144-100 vehicles and a class kisaha144-150 vehicle were delivered in 1994.
Car body
Their underframe was modified to be rebuilt into DMU trailer vehicles.
The height of their bolster beams was reduced to fit them with bogies for
DMU. The conductor's rooms located at the front and the rear of the vehicle
were gotten rid of and hinged doors located there were filled with the
plate by welding. Two 1,000mm wide stepped single leaf automatic sliding
doors and double-paned windows between the doors were carried from former
class ohafu51 coaches. Their livery is light gray with light green and
sky-blue narrow bands below the windows ana with a sky-blue narrow band
above the windows.
Bogies
They are equipped with trailer bogies, TR51C, transplanted from class kiha27 or kiha22, featuring pedestal guide type journal supporting system, and coil springs secondary suspension. Brake rigging is the single tread brake powered by the body mounted brake cylinder.
Auxiliary equipments
Class kisaha144 vehicles are equipped with a diesel generator, PGM-30RS-Z,
with a power output of 30kVA under their floor.
Accommodation
Seating is arranged as mixture of 8 transverse seating bays carried from
class ohafu51 with 1470mm seating pitch and 2+1 abreast and longitudinal
bench seating including seating converted from former transverse seating
bays to ease boarding and alighting. They are equipped with buttons beside
doors to open/close doors manually in order to get rid of the walls between
passenger saloon and the vestibules. Electric fans are fitted under the
ceiling. A Japanese style toilet that former class ohafu51 passenger coaches
have were left off excepting kisaha144-150 had on an existing Japanese
style toilet carried from s class ohafu51 passenger coach, employing a
chemical holding tank.
Modification
A Japanese style toilet which class kisaha144-150 is equipped with was gotten rid of and class kisaha144-150 was classified into -100 subclass in 1995.
JR Hokkaido equipped them with an air conditioner, N-AU26, rated at 20,600kcal/h on their roof, and a diesel generator to supply electricity to the air conditioner under the floor in 2001.
Class kiha143
Background and overview
JR Hokkaido developed class kiha143 DMU vehicles employing traction unit
developed for class kiha150 DMU to deliver additional DMU vehicles to the
Sassho line for relief of overcrowding in 1994 and seven class kiha143-150
vehicles retaining a Japanese style toilet and four class kiha143-100 vehicles
without a toilet were delivered. These vehicles were formed as two-car
sets consisting of class kiha143-100 at the Sapporo end and class kiha143-150
at the opposite end, or three-car sets consisting of class kiha143-100,
class kisaha144-100, and class kiha143-150.
Car body
Their underframe was modified to be rebuilt into DMU vehicles. The supporting
device for underfloor engine, the reinforcement of the doorway step to
fit them a prime mover and a hydraulic transmission under their floor were
introduced. The hinged doors located at the front of the vehicle for the
train crew was moved to change the conductor's room into the cab. They
were also equipped with windscreens, headlights, taillights, and the obstacle
deflector. 4.5mm thick plate was welded on the cab end for the protection
and they employed raised driver's cab against obstacles at the level crossing.
The rear conductor's room was left off and hinged doors located there were
filled with the plate by welding. Two 1,000mm wide stepped single leaf
automatic sliding doors having buttons to open/close doors manually, and
double-paned windows between the doors were carried from former class ohafu51
coaches. Kiha143-156 and kiha143-157 are equipped with an air conditioner,
N-AU26, rated at 20,600kcal/h on their roof. Their livery is light gray
with light green and sky-blue narrow bands below the windows ana with a
sky-blue narrow band above the windows.
Bogies
Class kiha143 vehicles are equipped with N-DT150A for powered and N-TR150A for trailer featuring bolster-less secondary air suspension, rolled rubber spring journal supporting system having rods connected with the truck frame, and 2-axle drive. These bogies were developed for class kiha150 DMU. Their bogie employs bow-shaped bogie frame to lower the fitting position of bolster suspension due to fit under the stepped doors. Both powered and trailer bogies employ single tread brake device.
Traction unit and auxiliary equipments
They are powered by a diesel prime mover, N-DMF13HZD with a power output of 450PS. Their hydraulic transmission gear is N-DW14C, featuring two-staged direct coupled range Their brake system is the automatic electromagnetic (CLE) air brake.
Accommodation
Seating is arranged as mixture of 8 transverse seating bays carried from class ohafu51 with 1470mm seating pitch and 2+1 abreast and longitudinal bench seating including seating converted from former transverse seating bays to ease boarding and alighting. They are equipped with buttons beside doors to open/close doors manually in order to leave off the walls between passenger saloon and the vestibules. Electric blowers are fitted under the ceiling. Class kiha143-150 vehicles are equipped with a Japanese style toilet located at the front with a chemical holding tank.
Modification
JR Hokkaido equipped them with an air conditioner, N-AU26, rated at 20,600kcal/h on their roof over the period from 1995 until 1996. In addition, JR Hokkaido equipped them with the ticket machines to issue the ticket indicating the boarding station at the doorways, the fare box near the driver's seat and the fare display behind the cab for the conductor-less operation over the period from 2011 until 2012.
Operations
Class kiha141 and kiha142 vehicles were delivered to Naebo depot and entered the Sassho line accommodation trains along with class kiha40 in 1990. An additionally delivered class kisaha144 trailer intermediate vehicle was inserted between 2-car sets consisting of class kiha141 and kiha142 to make 3-car set in order to provide additional capacity of the Sassho line. A class kisaha144 trailer intermediate vehicle was migrated into the 2-car sets consisting of high power kiha143 vehicles later. Pre-production vehicles, kiha141-1 and kiha142-2, were withdrawn and scrapped in 2005.
However, surplus five 2-car sets consisting of class kiha141 and class kiha142 were withdrawn with the replacement with EMU trains after the Sassho line was electrified. One 2-car set was scrapped and four were sold to Myanmar National Railways. Remaining EMU vehicles used on the Sassho line accommodation trains were completely displaced with EMU trains in December, 2012. Surplus kiha143 2-car sets were modified for conductor-less operation and relocated to Tomakomai depot in order to displace 711 series EMU vehicles sued on the Muroran line rural services. |
|
| Technical Data (Kiha141/142) |
| Items |
Data |
| Service
speed, etc. |
Service speed: 95km/h |
| Length |
19,500mm |
| Width |
2883mm |
| Height |
3895mm |
| Bogie |
DT22A (motored) TR51A (trailer) |
| Prime mover |
DMF13HS (class kiha141: 250PS×1, class kiha142: 250PS×2) |
| Transmission |
DF115A/TC2A |
| Air conditioner |
N/A |
| Designed
by |
JR Hokkaido |
| Technical Data (Kisaha144) |
| Items |
Data |
| Service
speed, etc. |
Service speed: 95km/h |
| Length |
19,500mm |
| Width |
2883mm |
| Height |
3895mm |
| Bogie |
TR51C (trailer) |
| Prime mover |
N/A |
| Transmission |
N/A |
| Air conditioner |
N-AU26 (20,600kcal/h ) |
| Designed
by |
JR Hokkaido |
| Technical Data (Kiha143) |
| Items |
Data |
| Service
speed, etc. |
Service speed: 110km/h |
| Length |
19,500mm |
| Width |
2890mm |
| Height |
4021mm |
| Bogie |
N-DT150A (motored) N-TR150A (trailer) |
| Prime mover |
DMF13HZD (450PS×1) |
| Transmission |
DW14C |
| Air conditioner |
N-AU26 (20,600kcal/h) |
| Designed
by |
JR Hokkaido |
|
|
