compound engine

British  

noun

1. a steam engine in which the steam is expanded in more than one stage, first in a high-pressure cylinder and then in one or more low-pressure cylinders

2. a reciprocating engine in which the exhaust gases are expanded in a turbine to drive a turbocharger

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Example Sentences

Although the Wright turbo compound engine was standard on both the DC-7 and Super Constellation, it proved so unsatisfactory that airlines were not interested in Wright engines for the new jet airliners.

From Time Magazine Archive

A. A very moderate level, never allowing it to get so high that moist steam will pass through the cylinders, because for satisfactory service a compound engine should always have dry steam.

From The Traveling Engineers' Association To Improve The Locomotive Engine Service of American Railroads by Anonymous

The compound engine, even, as has been seen, was invented by contemporaries of Watt, and the only important modifications since his time have occurred in details.

From A History of the Growth of the Steam-Engine by Thurston, Robert H.

Third, he went one step farther to the compound engine, consisting of two engines, primary and secondary, working steam expansively independently or in concert, with strokes alternate or simultaneous.

From James Watt by Carnegie, Andrew

In the starboard vessel there is a compound engine of 100 indicated horse power, with injection condenser, working the bucket chain by means of belts and wheel gearing, as shown on Fig.

From Scientific American Supplement, No. 795, March 28, 1891 by Various