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
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
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 |