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26th April 1980, Page 12
26th April 1980
Page 12
Page 12, 26th April 1980 — DEAR
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Which of the following most accurately describes the problem?

(b) The heat energy absorbed initially by the water has a quenching effect on combustion which lowers normally associated temperatures, thereby reducing in turn the tendency for the combusting materials to dissociate with an • expected gain in power output.

• (c) At low fuel rates the addition of water in the form of an emulsion improves the efficiency of injector capacity to produce droplets for sensible combustion.

Exhaustive trials over many years have been undertaken at this university and many others. Even the USSR has been operating buses on stabilised emulsions for over a year and all indications are that the resulting improvements make sound economic sense.

Most types of engine available in the UK have been fitted over the past eight years or so and we haven't lost one yet!

Finally, if Mr Murphy can produce controlled nuclear fusion in a diesel engine he will be both notorious and wealthy overnight. In fact, if he can produce adequate quantities of hydrogen gas at economic cost (usually an expensive process) to resolve the current energy crisis he will have made a most significant contribution to mankind!

R. V. THOMPSON Department of Marine Engineering University of Newcastle upon Tyne

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Organisations: University of Newcastle
People: Murphy

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