The Vaporizing Of Paraffin for High-Speed Motors
(Electric Ignition Type)

ROAD CAE AND TRACTOR MOTORS. 101 provision for cutting out the heated surface, and in this respect does not comply with the requirements of a motor with a high. temperature jacket circulation so as to get the most out of it when running 011 petrol. The carburettor vaporizer illustrated in Figs. 74 and 75 is designed for commercial cars, and more particnlariy for cars in service in remote countries, such as on the west coast of Africa, where not only is the cost of petrol extremely high, but native drivers a necessity. The noticeable features of the vaporizer, known as the Albion, consist in ready accessibility for cleaning and in the absence of all automatic adjustments for mixture controJ ; the vaporizing surface, which is comparatively large, is located on the front side of an exhaust chamber x1, and provided with a series of ribs vl, thus splitting up the mixture in a number of streams and materially adding to the heating surface. Only one float cistern / is used, and below this is a two-way change-over plug t for con- trolling the petrol and paraffin supplies ; from this cistern the fuel is fed to a single-jet spray-nozzle j delivering across the primary air current entering along the bend a. The mixture throttle consists of a double- beat valve h, h1 connected to a rod h2, under the Control of the driver ; the larger disc h of the throttle Controls the supply of diluent air from the pipe a2, and the smaller disc h1 the supply of vaporized mixture from v to the pipe m leading to the admission manifold of the motor ; the balanced disc valve h, h1 is thus seen to serve as a combined throttle and mixture regulator. An auxiliary air inlet r, under the driver s Control by a rod r1, is located between the throttle and vaporizer for the further dilution of the mixture, as may be desired under varying running