http://warships1discussionboards.yuku.com/topic/3853/t/Good-book-on-early-diesel-history-.html en-us Copyright 2006, Yuku feeds@yuku.com (FeedMaster) webmaster@yuku.com (WebMaster) Sat, 30 Jun 2007 22:42:27 GMT Fri, 18 Jan 2008 15:05:09 GMT Yuku Feeds 1.0 http://blogs.law.harvard.edu/tech/rss 60 http://static.yuku.com//feed/bypass/images/button-yuku.png http://warships1discussionboards.yuku.com/topic/3853/t/Good-book-on-early-diesel-history-.html Yuku - free hosted forums and profiles 88 31 {pics-1.1 "http://www.icra.org/ratingsv02.html" l gen true for "http://yuku.com" r (nz 1 vz 1 lz 1 oz 1 cz 1 ) "http://www.rsac.org/ratingsv01.html" l gen true for "http://yuku.com" r (n 0 s 0 v 0 l 0 )) Search Domain q http://yuku.com/search/direct/ http://warships1discussionboards.yuku.com/reply/67083/t/Good-book-on-early-diesel-history-.html#reply-67083 feeds@yuku.com (NewGolconda) http://warships1discussionboards.yuku.com/sreply/67083 Fri, 18 Jan 2008 15:05:08 GMT http://warships1discussionboards.yuku.com/reply/59245/t/Good-book-on-early-diesel-history-.html#reply-59245
One covers very early development through to the First World War.

The other covers diesels for submarines and is called something like :"Diesels for the First Stealth Weapon" ]]> feeds@yuku.com (Phil Gollin) http://warships1discussionboards.yuku.com/sreply/59245 Sat, 10 Nov 2007 10:07:41 GMT http://warships1discussionboards.yuku.com/reply/59135/t/Good-book-on-early-diesel-history-.html#reply-59135 "Source": Yearbook of B&W (Burmeister&Wain) Cph. ]]> feeds@yuku.com (ledeper) http://warships1discussionboards.yuku.com/sreply/59135 Fri, 09 Nov 2007 18:55:24 GMT http://warships1discussionboards.yuku.com/reply/59134/t/Good-book-on-early-diesel-history-.html#reply-59134 ]]> feeds@yuku.com (ledeper) http://warships1discussionboards.yuku.com/sreply/59134 Fri, 09 Nov 2007 18:51:17 GMT http://warships1discussionboards.yuku.com/reply/49619/t/Good-book-on-early-diesel-history-.html#reply-49619 feeds@yuku.com (Duncan MacKinnon) http://warships1discussionboards.yuku.com/sreply/49619 Thu, 09 Aug 2007 19:58:03 GMT http://warships1discussionboards.yuku.com/reply/49618/t/Good-book-on-early-diesel-history-.html#reply-49618
Dynamic compressors (axial, mixed flow, radial) were probably known at the time, but were probably not terribly familiar outside of fairly specialized circles. feeds@yuku.com (emc) http://warships1discussionboards.yuku.com/sreply/49618 Thu, 09 Aug 2007 16:23:33 GMT http://warships1discussionboards.yuku.com/reply/49626/t/Good-book-on-early-diesel-history-.html#reply-49626
A quick scan through it suggests that the third engine was actually a second design for 12,000bhp at lower revs. Scavenging seems to have been achieved by using two two stage scavenge pumps and some kind of exhaust pump, presumably a scavenge pump working in reverse to draw the combustion products out of the cylinder quicker.

The document is in German but my colleague is going to translate it over the weekend.
... ]]> feeds@yuku.com (Duncan MacKinnon) http://warships1discussionboards.yuku.com/sreply/49626 Thu, 09 Aug 2007 11:24:36 GMT http://warships1discussionboards.yuku.com/reply/49625/t/Good-book-on-early-diesel-history-.html#reply-49625
I'd like a copy of the document for my records. Please post it if you can. ]]> feeds@yuku.com (Dave Bender) http://warships1discussionboards.yuku.com/sreply/49625 Thu, 26 Jul 2007 16:29:45 GMT http://warships1discussionboards.yuku.com/reply/49620/t/Good-book-on-early-diesel-history-.html#reply-49620 feeds@yuku.com (LordArpad) http://warships1discussionboards.yuku.com/sreply/49620 Thu, 26 Jul 2007 12:53:44 GMT http://warships1discussionboards.yuku.com/reply/49624/t/Good-book-on-early-diesel-history-.html#reply-49624
What I have found out so far is that there are three engines mentioned around the right time.

An 8,000bhp engine of 670mm bore and 2x540 stroke which strongly suggests it was an opposed piston engine. It ran at 330... ]]> feeds@yuku.com (Duncan MacKinnon) http://warships1discussionboards.yuku.com/sreply/49624 Wed, 25 Jul 2007 18:59:49 GMT http://warships1discussionboards.yuku.com/reply/49617/t/Good-book-on-early-diesel-history-.html#reply-49617
My contact is away this week though so it might be a couple of weeks before I get anything. ]]> feeds@yuku.com (Duncan MacKinnon) http://warships1discussionboards.yuku.com/sreply/49617 Tue, 10 Jul 2007 15:59:48 GMT http://warships1discussionboards.yuku.com/reply/49623/t/Good-book-on-early-diesel-history-.html#reply-49623
I bet it's an interesting book. I never sailed with a double acting or opposed piston engine although I did visit a ship with a Doxford once. I would have loved to see it running flat out. ]]> feeds@yuku.com (Duncan MacKinnon) http://warships1discussionboards.yuku.com/sreply/49623 Tue, 10 Jul 2007 15:57:20 GMT http://warships1discussionboards.yuku.com/reply/49622/t/Good-book-on-early-diesel-history-.html#reply-49622 feeds@yuku.com (NewGolconda) http://warships1discussionboards.yuku.com/sreply/49622 Tue, 10 Jul 2007 04:29:23 GMT http://warships1discussionboards.yuku.com/reply/49616/t/Good-book-on-early-diesel-history-.html#reply-49616 www.gwpda.org/naval/proppl.htm
All I have on the 12,000 hp MAN diesel is the paper at the above link.

If you could find an online archive for MAN during the WWI era that would be great. ]]> feeds@yuku.com (Dave Bender) http://warships1discussionboards.yuku.com/sreply/49616 Tue, 10 Jul 2007 02:16:38 GMT http://warships1discussionboards.yuku.com/reply/49615/t/Good-book-on-early-diesel-history-.html#reply-49615
A supercharger is generally accepted as being mechanically driven and absorbs power from the engine. The rootes blower is probably the most well known although it isn't the only one.

A turbocharger (or turbo-supercharger) is quite specifically a device driven by exhaust gas and does not absorb power from the engine to develop boost pressure, other than the slight loss associated with overcoming back pressure in the exhaust.... ]]> feeds@yuku.com (Duncan MacKinnon) http://warships1discussionboards.yuku.com/sreply/49615 Mon, 09 Jul 2007 22:48:17 GMT http://warships1discussionboards.yuku.com/reply/49614/t/Good-book-on-early-diesel-history-.html#reply-49614 en.wikipedia.org/wiki/Roots_blower

I have never heard of turbocharging or supercharging being used on diesel engines at this early date, but that does not mean it didn't happen. We need the details for this particular MAN engine, which unfortunately I cannot find. ]]> feeds@yuku.com (Dave Bender) http://warships1discussionboards.yuku.com/sreply/49614 Mon, 09 Jul 2007 15:46:17 GMT http://warships1discussionboards.yuku.com/reply/49613/t/Good-book-on-early-diesel-history-.html#reply-49613
For a two stroke the biggest problem would be scavenging. In a two stroke the air supplied to the cylinder isn't just for combustion, it is an essential part of clearing the exhaust gas from the cylinder as there is no complete exhaust stroke to empty the cylinder before induction of air for compression. Turbocharging was non existent at the time and two strokes relied on methods such as scavenge pumps driven from... ]]> feeds@yuku.com (Duncan MacKinnon) http://warships1discussionboards.yuku.com/sreply/49613 Mon, 09 Jul 2007 14:23:09 GMT http://warships1discussionboards.yuku.com/reply/49621/t/Good-book-on-early-diesel-history-.html#reply-49621
Shaft horsepower is what you get at the propeller, whatever the prime mover. So for a direct coupled diesel (generally slow speeds) the bhp and shp will be the same, assuming the thrust block is within the engine.

For geared diesels the shp will be the bhp less the losses... ]]> feeds@yuku.com (Duncan MacKinnon) http://warships1discussionboards.yuku.com/sreply/49621 Sun, 08 Jul 2007 20:56:25 GMT http://warships1discussionboards.yuku.com/reply/49612/t/Good-book-on-early-diesel-history-.html#reply-49612
I got the general feeling that a 1920's motor ship, with blast injected 4 stroke diesels, exposed valves and an army... ]]> feeds@yuku.com (NewGolconda) http://warships1discussionboards.yuku.com/sreply/49612 Sat, 07 Jul 2007 01:04:18 GMT http://warships1discussionboards.yuku.com/reply/49611/t/Good-book-on-early-diesel-history-.html#reply-49611 feeds@yuku.com (Dave Bender) http://warships1discussionboards.yuku.com/sreply/49611 Tue, 03 Jul 2007 14:10:22 GMT http://warships1discussionboards.yuku.com/topic/3853/t/Good-book-on-early-diesel-history-.html
ANyone have any recomendations? ]]> feeds@yuku.com (NewGolconda) http://warships1discussionboards.yuku.com/topic/3853 Sat, 30 Jun 2007 22:42:27 GMT