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turbo-compound
turbo-compound adj.
Brit. 
/ˌtəːbəʊˈkɒmpaʊnd/
, /ˌtəːbəʊˈkɒmpaʊnd/U.S. /ˌtərboʊˈkɑmˌpaʊnd/
applied to a piston engine in which the exhaust gases drive a turbine coupled to the crankshaft./ˌtərboʊˈkɑmˌpaʊnd/ΘΚΠ
society > occupation and work > equipment > machine > machines which impart power > engine > internal-combustion engine > [adjective] > powered by piston engine > type of piston engine
opposed1910
turbo-compound1954
1954 Economist 11 Sept. 11/3 Turbo-compound; piston compound. A combination of gas turbine and reciprocating engine.
1955 C. E. Chapel et al. Aircraft Power Plants (ed. 2) xvii. 339/2 Aircraft powered by the Wright turbo-compound engine are the Douglas DC-7, the Lockheed Super Constellation, [etc.].
1983 Truck & Bus Transportation (Austral.) July 60/2 Whilst the turbocompound diesel has progressed to the operational stage..the benefits of this concept can be more fully realised and cost justified when used in conjunction with an adiabatic or insulated engine.
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