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Non Conventional Fuels for Engines
Published January 01, 1982 by SAE Australasia in Australia
Authors summarize the results they obtained at the thermal engines laboratory of the high engineering college of Barcelona.
Two lines were followed; The first devoted to the research of the effects of the addition of organic products to conventional petrols in view to improve their behaviour and to go in search of fuels not derived from oil for OTTO-cycle engines, the best results having been obtained with mixes of conventional fuels with methanol and propanone; on the other hand, mixes of butane, methanol, ciclohexane and toluene were tested, obtaining excellent results as well from the point of view of the octane number as well as from that of horsepower and low contamination index.
Now research is carried forward in which mixes of standard petrol component fractions with methanol and eventually with other ingredients are tested.
These non conventional fuels have been tested on engines on the test bed, the exhaust gases having been submitted to analysis. The octane number, the stability under low temperatures, the distillation curve, the vapour tension, etc., have been determined as well.
Finally the improvement on pollution has been determined on vehicles tested operating under the europa cycle.
The engines as well as the vehicles were completely standard and for this reason, the achievable improvements could be arrivd at with only fitting specially projected carburettors to same.