Articles liés à Internal Combustion Engines and Tractors, Their Development,...
Internal Combustion Engines and Tractors, Their Development, Design, Construction, Function and Maintenance - Couverture rigide
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Chapter IT heD evelopment of Internal Combustion Engines Those of us who are famihar with the crude designs in which the internal combustion engine first appeared in the early nineties, marvel at the progress that has since been made in refinement of design and the perfecting of mechanical efficiency. Although these engines twenty years ago were extremely uncertain in operation and control, there were men who had faith enough in this type of motive power to continue its manufacture, exiD erimenting and improving until they developed the present excellent engines with which we are now so familiar. The final result of this sifting-out process is the development and specialization of different tjqjes, designed to meet some particular need in some certain specialized field. Because of this specialization we have today the automobile engine, the aeroplane, the marine, the stationary, and the tractor engine, each with its characteristic qualities and advantages for its special work. A nother complication, requiring more specialization, arose just as the gasoline engine reached the point of development where it became a satisfactory power producer mechanicall)-. Manufacturers found themselves facing an entirely new prolileni an insufficient supply of gasoline which threatened to become a chronic condition in the fuel oil business. This shortage of gasoline introduced a new stage in the development of the internal combustion motor an endeavor to produce an engine that would run with positive certainty and economy on the lower grade fuels such as kerosene and distillate, the abundance and cheapness of which made them verj desirable fuels. This fact has had an important influence on farm engine and tractor designs. The Modern Farm Tractor Of all the users of internal combustion engines, the farmer had the greatest variety of work to be done. As a consequence, a large
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