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. 1915 edition. Excerpt: ...necessary to preheat the air and to jacket the mixture pipe with hot jacket water, or with exhaust gases. Even with these additions, it is often found difficult to operate satisfactorily, and most carbureting kerosene engines are arranged to spray water into the cylinder or to saturate the mixture with water ...
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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. 1915 edition. Excerpt: ...necessary to preheat the air and to jacket the mixture pipe with hot jacket water, or with exhaust gases. Even with these additions, it is often found difficult to operate satisfactorily, and most carbureting kerosene engines are arranged to spray water into the cylinder or to saturate the mixture with water vapor on its way to the cylinder, particularly when running under heavy loads. Just what the action of the water vapor may be is still undetermined, but it seems to give more certain, quieter, and cleaner combustion. (b) Many kerosene and other oil engines operate on what is known as the hot-bulb or hot-head principle. An engine of this type is shown in Fig. 289. The oil is injected into the hot bulb during the suction or compression strokes and is there vaporized by the hot walls. Air is compressed into the bulb during the compression stroke of the engine, and, when the mixture acquires the proper proportions, spontaneous ignition takes place. The bulb is heated to redness by a blow-torch before starting the engine, and thereafter is maintained at the proper temperature by the heat generated during combustion. There is always a certain amount of carbon or lampblack deposited within the hot bulb by the "cracking" of the oil molecules during vaporization, and it is therefore necessary to clean the bulb periodically. (c) Practically the only other distinct method of using the heavier oil fuels in internal-combustion engines is that exemplified in the Diesel oil engine described in Section 204. This gives by far the most perfect combustion with the heavier fuels, but is open to criticism because of the high pressures involved. (d) To overcome this difficulty, engines are now being built which may be considered a compromise between the...
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Add this copy of Elements of Heat Power Engineering, Part 1: to cart. $82.75, very good condition, Sold by BookDepart rated 4.0 out of 5 stars, ships from Shepherdstown, WV, UNITED STATES, published 1926 by John Wiley & Sons.
