Technology and Operations  
This forum is for discussing technological & operational matters pertaining to U-boats. 
Re: MAK/DWK diesels
Posted by: Rainer Bruns ()
Date: March 15, 2002 04:03AM

Hi Oscar,
First job for CAT is to get rid of the awful nickname for MAK (Mist aus Kiel = garbage from Kiel). This apparently came from a line of medium speed diesels shortly after the war, which were not too good.
Specs for 9cyl MAN for type IX:
4 cycle 9 cylinder in line type M9V 40/46 supercharged w. Buechi/BBC compressor driven by exhaust.
Max cont.rating 2200hp at 470rpm - consumpt.180gr/hp/hr
Max 2/24hrs 2350hp at 480rpm
Emergency max for 0.5/24hrs 2500hp at 490rpm
Do not have the corresponding numbers for type VII handy right now, but remember 6-cyl very similar with abt 10hp less ber cyl caused by less powerfull turbocharger. Neiter type had reduction gears.
As you can see, modern 4 cycl engines of comparable volume gain another 100+ hp per cyl or so. Rgds, RB

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Subject Written By Posted
Diesels and electro. at the same time? Leif... 03/04/2002 01:37PM
Re: Diesels and electro. at the same time? walter M 03/04/2002 05:47PM
Re: Diesels and electro. at the same time? Marc Cimon 03/05/2002 01:33AM
Re: Diesels and electro. at the same time? Leif... 03/05/2002 06:44AM
Re: Diesels and electro. at the same time? Einar 03/09/2002 01:19PM
Re: Diesels and electro. at the same time? J.T. McDaniel 03/09/2002 08:27PM
Re: Diesels and electro. at the same time? Oscar Bustamante 03/14/2002 01:22AM
Re: MAK/DWK Rainer Bruns 03/14/2002 03:53AM
Re: MAK/DWK diesels Oscar Bustamante 03/14/2002 11:21PM
Re: MAK/DWK diesels Rainer Bruns 03/15/2002 04:03AM
Re: MAK/DWK diesels Oscar Bustamante 03/15/2002 11:43PM
Re: MAK/DWK diesels Rainer Bruns 03/16/2002 04:40AM
Re: MAK/DWK diesels Oscar Bustamante 03/19/2002 11:15PM
Re: MAK/DWK diesels Rainer Bruns 03/20/2002 04:26AM
Re: MAK/DWK diesels Vincenzo 12/10/2002 09:42PM


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