TEMPERATURE AND CARBURATION.
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• The Advent of a New Carburetter.
• FOR SOME TIME we have been watching a new method of carburation, brought to us already in a proved state, merely requiring a small amount of further development and a series of tests more independent in. character than those which had preceded it.
In an early issue of THE COMMERCIAL MOTOR we hope to deal with the apparatus which is generally referred to by the inventor as an "economizer," as it can be employed either alone or in conjunctisn with a petrol carburetter, its main function being. to permit the use of any grade of fuel ranging froth petrol right through to thelleaviestloil. The system employed is .entirely different from anything we have yet seen ; fact, it sets out on lines which constitute a complete " reversal from the ideas that have hitherto prevailed.
• With every vaporizer, so 'far placed on the market, the heat employed in connection with vaporization increases with' the speed of the engine, so that at low speeds the heat is insufficient to keep the hydrocarbon vaporized, resulting in re-condensation and also in lubricating.troubles, whilst at high speed the eNcess of heat is such as to cause the charge to reach the point of spontaneous ignition, with consequent loss of power, knocking, and other engine troubles.
Theinvention which wetare pre...paring to describe ainks at the control of this point of ignition. It is designed to be ireadily fixed to any engine, and its control is of the simplest nature. Only sthe " quantity of fuel is-under the control or the driver, and this is the ordylactor thatdienieeds to control.There is not -Elie slightest loss of the flexibilityethat: to be obtained from the use of, petrol. The greater heat units in the ilowes grade or heavier fuels are extracted as adry gas -which is kept in a gaseous form .throughout its passage into the condensing chamber.