All of the present fleet type submarines are equipped with engines manufactured either by the Cleveland Diesel Engine Division, General Motors Corporation, Cleveland, Ohio, or by Fairbanks, Morse and Company, Beloit, Wisconsin. | 3 ENGINES AND ENGINE COMPONENTS 3A1. of the present fleet type submarines are equipped with engines manufactured either by the Cleveland Diesel Engine Division General Motors Corporation Cleveland Ohio or by Fairbanks Morse and Company Beloit Wisconsin. These engines have been in the process of development for the past several years and the latest models proved highly dependable under wartime operating conditions. Before World War II these engines were used almost exclusively on submarines. With the expansion of the Navy however these engines have also been used on destroyer escorts amphibious craft escort type patrol vessels and various auxiliary craft. The following sections are devoted to the discussion of basic diesel engine construction and the application of these basic principles to the General Motors and Fairbanks-Morse engines. 3A2. General Motors models of GM main engines are found in fleet type submarines today Model 16-248 and Model 16-278A. The former was installed exclusively in General Motors engine equipped vessels until early in 1943 when Model 16-278A was introduced. All General Motors installations since that time have been Model 16-278A engines Figures 1-10 and 1-11 . Basically the two models are similar. The principal differences are in the size and design of the parts methods of construction and type of metals used. In the following chapters all references are based on the current Model 16-278A. Important differences between the two models however will be noted. The GM engine is a 16-cylinder V-type engine with 2 banks of 8 cylinders each The engine operates on the 2-stroke supplies a Model 8-268 auxiliary engine for fleet type submarines. This is an 8-cylinder in-line 2-cycle air starting engine rated at 300 kw generator output at 1200 rpm. The size of the bore and stroke is 6 3 8 inches and 7 inches respectively. The tables at the end of this chapter pages 78 and 79 contain engine data ratings and clearances for
