Accession Number : AD1001847


Title :   Engine Cold Start


Descriptive Note : Technical Report,10 Jul 2013,30 Sep 2015


Corporate Author : U.S. Army TARDEC Fuels and Lubricants Research Facility San Antonio United States


Personal Author(s) : Yost,Douglas M ; Hansen,Gregory A


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1001847.pdf


Report Date : 01 Sep 2015


Pagination or Media Count : 65


Abstract : These fuels were used for testing a GEP 6.5L turbo charged V-8 diesel engine operation in a cold box. This engine architecture is traditionally sensitive to cold start and was able to show large changes in operability between the fuels. At a relatively warm 40 degrees F, fuels below 44 CN were unable to start in the engine without the aid of glow plugs. At 20 degrees F and lower, none of the fuels were able to start the engine without the aid of glow plugs. At the -20 degrees F condition, the lowest cetane fuel caused cylinders 4 and 6 to cease firing, for 17 and 20 minutes respectively, until sufficient heat had built up in the engine to restart combustion. This cylinder non-fire condition was more and more prevalent with colder temperatures and lower cetane number fuels.


Descriptors :   diesel engines , Fuels , test and evaluation , combustion


Distribution Statement : APPROVED FOR PUBLIC RELEASE