Talk:Combined diesel and gas

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What year was CODAG first used? Trekphiler (talk) 08:21, 20 June 2008 (UTC)[reply]

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Something is not right[edit]

Ratio 1:7.7 (engine:propeller) is wrong, should be 1:7.7 (propeller:engine). Engine almost always use reductor to reduce rpm for propeler (exceptions are twostroke without reductor - where the propeler is directly conected to crankshaft)). Drawing ratio is opposite to what it says about ratio. It says in article that it reduces, but on the drawing there is a bigger wheel, when the turbine is engaged.

I also have another question: in CODAG (I know it doesn't make sense), but can you operate only the turbine and disengage diesel (because there are cluthches od diesel?), or is the transsmission so hard that turbine alone couldn't run the propeler, and would need diesel-. Pawlin (talk) 10:55, 21 October 2014 (UTC)[reply]

I expect you could. NOT certain. A Drawback there is what is the lowest RPM possible at the GT. The US GT ships with LM2500 engines will go at 7 or 8 knots with the GT on idle. That is the reason the have CPP- Controllable Pitch propellor - vary the pitch on the prop to all slower speed - keep the higher engine / shaft RPM. I expect. I don't know the detail of the issue the Independence Class LCS have had with the RENK (german designer) to the reduction gears.- Maybe you have stated that issues simplified. 23:05, 15 August 2022 (UTC) Wfoj3 (talk) 23:05, 15 August 2022 (UTC)[reply]

Steam?[edit]

I don't believe that this "Combined Diesel and Gas and Steam" exits. I find nothing on Google, and it's not referenced. I think it's someone trying to sell some fantasy idea, like the "six-stroke engine". Thus i am removing it..45Colt 00:08, 15 November 2014 (UTC)[reply]