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The JNR Class DD93 was a diesel-hydraulic locomotive operated by the Japanese National Railways and later the Nagoya Rinkai Railway from 1960 to June 1972.

History[]

The DD93 was a prototype diesel-hydraulic locomotive used by the JNR, with a single locomotive prototyped while the company developed its own locomotives for domestic sales as well as potentially for export. A total of ten locomotives were prototyped; these were Hitachi's DF90, DF91 and DF93, Kawasaki's DF40, Kisha Seizō's DF41, Nippon Sharyo's DD42 and DD93, Shin-Mitsubishi's DD40 and DD91 and Toshiba's DD41.

One locomotive was built in 1960 by Nippon Sharyo; when built, it featured a number plate reading "DD 1000 HV" and was displayed at the Asian Railway Leader's Meeting that year. The locomotive was purchased by the Japanese National Railways in 1960, numbered DD93 1 and deployed at Nagoya Rolling Stock Center where it was mostly used for switching duties between Nahoya Station and the now-abandoned Sasajima Station. DD93 1 was returned to Nippon Sharyo in March 1965.

In August 1965, DD93 1 was purchased by the Nagoya Rinkai Railway and put into service pulling freight trains. It was reclassified the Class ND551 and renumbered ND551 1; the locomotive entered service with the opening of the company, alongside the ND552 locomotives. When transferred the locomotive's prime mover was also replaced. ND551 1 operated until June 1972 when it was withdrawn and scrapped.

Design[]

The DD93 featured a steeplecab-like design, giving it an appearance similar to that of a switching locomotive.

Specifications[]

The DD93 was fitted with a L12V 18/21 prime mover and a LT306r hydraulic transmission; the prime mover was of a MAN design but built by Mitsubishi Heavy Industries under license, while the hydraulic transmission is of a Voith design built by Fuji Electric. The prime mover produced 1,100 PS (809 kW). When bought by the Nagoya Rinkai Railway the prime mover was replaced with a DML61S prime mover, the same prime mover as used on the DD51.

Gallery[]

JR Group motive power
JNR Diesel prototype DB10DC10DC11DD10
4-axle diesel DD11DD12DD13DD14DD15DD16DD17DD20DD21DD40DD41DD42DD50DD51DD53DD54DD90DD91DD92DD93
5-axle diesel DE10DE11DE15DE50
6-axle diesel DF40DF41DF50DF90DF91 (gen 1)DF91 (gen 2)DF92DF93
Shinkansen 911912
Narrow-gauge diesel Ke DB10Ke DB11
Early 2/4-axle freight electric AB10EB10ED10ED11ED12ED13ED14ED15ED16ED17ED18 (gen 1)ED18 (gen 2)ED19ED23ED24
Early 4-axle passenger electric ED50ED51ED52ED53ED54ED55ED56ED57
Early 6-axle freight electric EF10EF11EF12EF13EF14EF15EF16EF18
Early 6-axle passenger electric EF20EF50EF51EF52EF53EF54EF55EF56EF57EF58EF59HEF10HEF50
Early 8-axle electric EH10EH50HEH50HEH150
Early Abt rack rail electric EC40ED40ED41ED42
Acquired from private railways ED20ED21ED22ED25 (gen 1)ED25 (gen 2)ED26 (gen 1)ED26 (gen 2)ED27 (gen 1)ED27 (gen 2)ED28 (gen 1)ED28 (gen 2)ED29 (gen 1)ED29 (gen 2)ED30 (gen 1)ED31ED32ED33ED34ED35ED36ED37ED38Ke ED10DeKi 1RoKo 1DeKi 501RoKo 1000
DC 4-axle ED60ED61ED62ED63ED95
AC 4-axle ED44ED45ED70ED71ED72ED73ED74ED75ED76ED77ED78ED79ED90ED91ED93ED94
DC 6-axle EF60EF61EF62EF63EF64EF65EF66EF67EF90
AC 6-axle EF70EF71
Dual-current ED30 (gen 2)ED46ED92EF30EF80EF81
Other AH100
JR Group Dual-current electric ED500EF500EF510EH500
DC electric EF200EF210EH200
DC EMU M250
AC electric EH800
Diesel DD18DD19DB500DD200DF200ENR-1000
Hybrid HD300

Template:NagoyaRinkai

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