diesel-hydraulic
Speech parts
1. diesel-hydraulic - Noun
2. diesel-hydraulic - Adjective
Meaning
a locomotive driven by a hydraulic transmission system powered by a diesel engine
Source: WordNetSynonyms
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Examples
Following the impact of the privatisation of British Rail in the late 1990s, several other diesel-hydraulic DMU families have been introduced: * Class 168 Clubman and Class 170 171 Turbostar units, a development of the earlier Networkers.
Diesel-powered units may be further classified by their transmission type: diesel-electric (DEMU), diesel-mechanical (DMMU) or diesel-hydraulic (DHMU).
Of the three, electric transmission has proven the most popular, and although diesel-hydraulic locomotives have certain advantages and are continuously used in some European countries, most modern Diesel-powered locomotives are diesel-electric.
The earliest examples have now been withdrawn from service; * Sprinter a family of diesel-hydraulic DMUs.