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Christ · 11-01-2009, 01:25 AM

4x420 = 1680HP available engine capacity

1 gallon of diesel fuel contains 138,690 BTU/gal

138,690 / 3413 = 40.64 KW/gal content for middle grade (road) diesel

40.64*60 (GPM) = 2,438.4 kW/Min available energy content in the diesel fuel that was burned.

2,438 kW = 3,269.4 HP.

1680 / 3,269.4 = 0.514 (about 51% efficient).

Not bad for huge oil-burners, eh? I would have to assume they were purpose built and run steady-state (at a specific RPM), right?

11-01-2009, 01:25 AM	#42 (permalink)
Christ Moderate your Moderation. Join Date: Nov 2008 Location: Troy, Pa. Posts: 8,919 Pasta - '96 Volkswagen Passat TDi 90 day: 45.22 mpg (US) Thanks: 1,369 Thanked 430 Times in 353 Posts	4x420 = 1680HP available engine capacity 1 gallon of diesel fuel contains 138,690 BTU/gal 138,690 / 3413 = 40.64 KW/gal content for middle grade (road) diesel 40.64*60 (GPM) = 2,438.4 kW/Min available energy content in the diesel fuel that was burned. 2,438 kW = 3,269.4 HP. 1680 / 3,269.4 = 0.514 (about 51% efficient). Not bad for huge oil-burners, eh? I would have to assume they were purpose built and run steady-state (at a specific RPM), right? __________________ "¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"