Mixing Valve Designed by I.A.E. Gives Good Results on Institution's Converted Oil Engine Tests
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have proved suitable, because it is in production and, although devised for petrol conversions, can he fairly easily modified for oil conversion by the incorporation of a fixed air bleed. Apparently, however, the hopes are to be
disappointed. •• In connection with the mixing valve designed and, used by Glasgow Corporation, the evidence available suggests that the reason it has so far failed to give .completely satisfactory results is that it is not exactly suited, in its present form, for the • type of engine used for this series of experiments.
Having performed, up to date, in an encouraging manner, the I.A.E. valve is now to be tried out in actual road tests, and particulars of its construction will be announced when these are sufficiently advanced.
Automatic Air Admission Briefly, it comprises an arrangement whereby the gas flow is positively controlled .by a throttle valve, whilst the air admission is automatically adjusted by a spring-controlled flap valve. A reason for the I.A.E. device giving more power than was -developed with independent controls may be that the air-intake of the former affords a useful injector effect, thus increasing the charge weight.
We propose to deal at greater length with this series of important experiments, which is being carried out in collaboration with the Directorate of Alternative Motor Fuels, of the M .0. W. T. , C. A.V. Ltd., and the Zenith Carburetter Co. Ltd., when more data has been gathered and reliable conclusions can be drawn.