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Engineering Evaluation and Analysis for the Improvement of Military Standard Generators

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Final rept. 3 Jun-31 Jul 1987

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This report presents the analyses and design of specific modifications to the MIL Standard Diesel Engine Driven DED generator sets 15, 30, and 60 KW. Design improvements targeted towards improving reliability and maintainability are presented. Heavy duty slides were added to the battery tray to allow an extension of 12 in. out from the existing design. Tee handle latches have been selected to improve door sealing after repeated use. Soft isolation mounts were selected to withstand the impact of an 8 mph rail impact. The throttle was relocated to the control panel to facilitate noise attenuation modifications. A low coolant impedance sensor was added to the set to prevent damage to the set from operation with low coolant levels. Use of a different engine exhaust muffler for reduced sound signatures has an accompanying new exhaust outlet location and orientation vertical. After evaluation of manufacturers engine data obtained during a market surveillance, the Hercules D3400-T engine was recommended for installation testing as a replacement engine for the 60 KW DED set. Modifications resembling the Regency Net Sound attenuation design were adapted to the 15, 30, 60 KW DED sets. These modifications include sound insulation, engine air intake silencer, engine exhaust muffler, and cooling air intake and exhaust baffling. fr

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  • Electric Power Production and Distribution

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