Two-fuel Carburetters and Fittings—V.
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The Binks Carburetter, Which is Designed So as to be Adaptable for any Internal-Combustion,-Engined Road Vehicle.
The Binks two-fuel carburetter is supplied in different forms, for use with petrol and Births' fuel, or for use with petrol and paraffin. Our present concern is only with the apparatus for petrol and paraffin.
It consists of a carburetter very similar to the Binks petrol carburetter, but, with the addition of a second float chamber and a twoway tap. This is coupled up to a vaporizer, which is in .effect an induction pipe within the engine exhaust pipe. The vaporizer; although it, as stated above, is in effect merely an inductiorr pipe
within the engine exhaust pipe, possesses an ingenious feature designed to improve the heating properties. The mixture from the carburetter is conveyed round a helical or -.screw-shaped passage inside a easing carried conoentrically, within the exhaust pipe. In this manner, owing to the fact that the gas is drawn alongat a fair speed. centrifugal .loree takes effect, and,. throws whatever there may be of liquid Paraffin against the wall dividing the induction pipe from_ the exhaust pipe. The device necessitates, of course, the provision of two tanks, or, in the case of ita being sunplied than existing machine, the, addition of a supple, mentary tank for the petrol, utilizing the existing petrol tank for the heavier fuel. A pipe from each tank connects with the correct float chamber, and either fuel may be directed to the jet as desired by means. (lathe two-way cock already mentioned, and which may be controlled from the driver's seat. It is customary to start the engine on petrol, changing over to paraffin alter two or three minutes working.
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This carburetter. has been -fitted in one or 'other of its forms to all kinds of touring Carsand many courinercial vehicles, and a special. attachment is made for Ford vans. Werecently had the pleasure of a fairly long run on a Ford van fitted with. this device. We submitted it to a most thorough test, and it ran throughout in a satisfactory manner. There was, of course, no difficulty in starting, this being done with petrol as a fuel, and, therefore, presenting no more difficulty than in the ordinary way, The change-over was made in the course of two or three minutes, and praetically no difference wasnoticeable in the running . of the car ; there was no emission of smoke, no smell, the control was no lesssimple than with the more usual fuel, and we were able to achieve quiet,' slow: running of the engine without any difficulty. In the case of the Ford, and also in many other engines, it is found desirable to reduce somewhat the compression pressure. Mr. Binks does this by using his patentdevice, which he names an "anti-pinker.' This consists of a bottle-shaped casting, screwed at its neck so as to take the place of the starting plug, and provided with a boss on the side of it, so as to accommodate the displaced plug. By the addition of one of these to each cylinder, the compression space is, 'of course, increased by an amount egual to the contents. of the antipinker, These are made in different sizes, according to the engine to be fitted with the finks two-fuel carburetter, the actual capacity being determined by a satisfactory formula, which Mr. Binks has adopted after continuous, careful study, and which, therefore, cannot at present be made public.By the use of this, the slow-running properties of any engine utilizing paraffin are considerably increased, without the presence Of any habit of choking or liability to preignition in steady use..