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

INTRODUCTORY REMARKS. 5 should be capable of very perfect automatic mixture and temperature control, or be skilfully manipulated, in order that the ful! power of the motor may be obtained with open throttle, and complete combustion when running slowed down or declutched. Paraffin motors of the electric ignition type, o wing to their ability for more perfect timing of the explosion effect, are faster and more amenable to a wide range of speed control than motors dependent on a cylinder-head vaporizer, althougli for the intermediate class of marine craft, such as fishing boats, small cargo boats, and the like, also for stationary work when used under conditions where there is objection to the use of a blow-flame at starting, paraffin motors constructed to vaporize on the explosion-heated or cylinder-head principle have certain advantages for the heavier class of work; but as all motors constructed according to this method must have » a separate vaporizer for each cylinder, and, in addition J to being heavier, are incapable of the high speeds obtain- | able in motors of the electric ignition type, the latter 5 method is obviously better adapted for motors required to run on flash-proof oils, wherewith a high-power duty is an import ant desideratum, which remark applies more éspecially to motors limited in power to that required for motor boats, tractors, lomes, as well as for touring cars, etc., and, of course, for a number of ot her applications, such as small electric and pumping installations and the like. In such motors the external method of vaporizing the paraffin, as by utilizing the heat of the exliaust, is the one most generally adopted, owing to its applicability to motors of the light-oil or motor-spirit type without interference