Présentation de l'éditeur
Vt ,- OPREFACE. The purpose of this book is to present in a compact form those principles which underiie the design of gas-engines, together with such data on the subject as seem reliable for the use of those engaged in building this kind of machinery, and who are familiar with its characteristics. The qualitative or inventive side of design, such as is treated in all the books that have so far appeared, except Giildner in German, is here entirely omitted and familiarity with such presupposed. This book is concerned entirely with the quantitative side of design, and treats solely of the forces in, and the energy-transforming power of the standard mechanism of, the exploding gas-engine. All those whose interests have demanded such a quantitative knowledge of the gas-engine, either for probable output and economy or for the stresses in and proper strength of resisting engine parts, have met with difficulty in finding reliable data for reference,, as there is no book in English treating exclusively of this side of the subject. The data here presented are the result of many years collection and personal experience, and were first classified in the present form for lecture use before my classes at Columbia University. The increase in quantity of material during the last few years made it seem desirable to publish the notes in as closely condensed a form as possible consistent with clearness. The work is divided into three parts. The first, treating of power, efficiency, and economy, gives the material necessary for deciding on the necessary piston displacement for any specified output for any kind of gas, and enables the designer to approximately predict economy. The second part contains the data and method for determining the stresses in the parts and the number and arrangement of cylinders necessary for balance or turning effort to meet the specifications.
(Typographical errors above are due to OCR software and don't occur in the book.)
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Présentation de l'éditeur
This book was originally published prior to 1923, and represents a reproduction of an important historical work, maintaining the same format as the original work. While some publishers have opted to apply OCR (optical character recognition) technology to the process, we believe this leads to sub-optimal results (frequent typographical errors, strange characters and confusing formatting) and does not adequately preserve the historical character of the original artifact. We believe this work is culturally important in its original archival form. While we strive to adequately clean and digitally enhance the original work, there are occasionally instances where imperfections such as blurred or missing pages, poor pictures or errant marks may have been introduced due to either the quality of the original work or the scanning process itself. Despite these occasional imperfections, we have brought it back into print as part of our ongoing global book preservation commitment, providing customers with access to the best possible historical reprints. We appreciate your understanding of these occasional imperfections, and sincerely hope you enjoy seeing the book in a format as close as possible to that intended by the original publisher.
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