Accession Number : ADA585712


Title :   Assessment of Governor Control Parameter Settings of a Submarine Diesel Engine


Descriptive Note : Research rept.


Corporate Author : DEFENSE SCIENCE AND TECHNOLOGY ORGANIZATION VICTORIA (AUSTRALIA) MARITIME PLATFORMS DIV


Personal Author(s) : Hield, Peter ; Newman, Michael


Full Text : http://www.dtic.mil/dtic/tr/fulltext/u2/a585712.pdf


Report Date : Mar 2013


Pagination or Media Count : 34


Abstract : Modern conventional submarines use diesel generators to provide power for propulsion and the hotel load. The governor, often a proportional-integral controller, attempts to maintain a constant speed by regulating the fuel flow to compensate for the back pressure disturbances due to the underwater exhaust. Poor control can cause fluctuating exhaust gas temperatures, leading to increased wear and reduced reliability. This paper develops a low order engine model which is then used to investigate the performance benefits that can be obtained through proper tuning of the governor control parameters. It is found that the engine exhibits stable behaviour over a very wide range of controller gains, and that tuning the governor solely to minimise the engine speed fluctuations may not minimise the exhaust gas temperature fluctuations.


Descriptors :   *DIESEL ENGINES , *SUBMARINE ENGINES , AUSTRALIA , EXHAUST GASES , PROPULSION SYSTEMS , RELIABILITY , SPEED REGULATORS , STABILITY , VELOCITY


Subject Categories : Submarine Engineering
      Reciprocating and Rotating Engines


Distribution Statement : APPROVED FOR PUBLIC RELEASE