Motor Vehicles and Motors, Their Design, Construction and Working by Steam, Oil and Electricity Volume . 1 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1902 Excerpt: ...mist produced and maintaining it to the last moment in that condition. Between these two extremes there have been many stages, including attempts to gasify without a proper comprehension of the physical conditions involved in the process and in the use of the product. In nearly all those which are most successful and simple, the guiding principle is the breaking up of the oil by spraying or trituration in presence of warmed air which moves rapidly over heated surfaces on its way to the engine cylinder. The atomising action is an important part of the process, though it may be sufficiently carried out by very simple means, such as admitting the oil with air into a narrow and more or less tortuous passage, or past a mushroom valve into a more or less obstructed passage. The air should be warmed before the point of oil admission is reached, and it must move at high velocity so that it and the oil may be rubbed and knocked sufficiently to produce an oil mist or fog. This mist must then be further heated and not allowed to condense. Whatever the methods employed, uniformity of the conditions met with by the oil must be maintained. Hence vaporisers heated by the exhaust gases are unsatisfactory, except for uniform loads, and quite impracticable for a very variable load, and varying quantity of exhaust Equally useless for extremely variable loads is a vaporiser which, though heated uniformly by other means, depends chiefly on that latter part of the process of vaporisation, which is done in the hottest part of the vaporiser immediately before entering the cylinder. Such vaporisers may work with sufficient perfection to suit fixed engines, and others working where variations of power requirements are not extreme, and where a little imperfect exhaust is of no import...