Abstract
TN the first Thomas Lowe Gray lecture, delivered Jbefore the Institution of Mechanical Engineers on Jan. 6, Prof. C. J. Hawkes makes an interesting survey of the past development, present status, and probable future development of the marine oil-engine. Past development is but briefly outlined. In regard to the present position, attention is directed to the fact that recent improvements in fuel consumption of marine steam turbine installations have reduced the advantage in this respect held by the oil-engine. In the tests conducted by the Marine Oil-Engine Trials Committee, the Still airless-injection two-stroke engine, consuming 6880 B.T.U., and the Doxford airless-injection opposed piston two-stroke engine, consuming 7570 B.T.U. per brake horse-power per hour, were the best performances, and it is shown that while the former has a less efficient fuel corn bustion, this is more than balanced by the energy recovered from the jackets and exhaust gases. It is estimated that the minimum consumptions possible at the present time are 6240 and 6820 B.T.U. per brake horse-power hour for the Still and Doxford engines respectively.
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Marine Oil-Engines. Nature 121, 188–189 (1928). https://doi.org/10.1038/121188b0
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DOI: https://doi.org/10.1038/121188b0