Gas and Oil Engines and Gas-Producers

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Excerpt from Gas and Oil Engines and Gas-Producers: A Treatise on Theoretical and Mechanical Developments of the Modern Internal-Combustion Motor, Its Application to the Production of Efficient Power Units, and the Latest Designs of Fuel ProducersClassification of Heat Engines. The heat engine is at present the most important of all the available generators of power. Its purpose is to convert into work the heat derived from the combustion of fuel.Heat engines may be divided into two broad classes, according to where the combustion of the fuel takes place. In one class the combustion takes place entirely outside the working cylinder, the heat of combustion being transmitted by conduction through the walls of a containing vessel to the substance which constitutes the active working agent. Such engines may be called external-combustion motors. The most common example of this class is the steam engine. Another example, which is but little used, is the hot-air engine. If the combustion takes place inside the engine itself, or in a communi cating vessel, so that the products of combustion act directly on the engine, We have an engine of the second class - the so-called internal combustion motor. Gas and oil engines are the most common examples of this type of motor.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully, any imperfections that remain are intentionally left to preserve the state of such historical works.