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Forum: Engines and Propulsion Systems 29-09-2011, 16:00
Replies: 38
Views: 6,229
Posted By Jd1
Re: Hybrid Propulsion - I Just Don't Get it

Cool ... er ... hot ..... I had not heard of this before and it looks like we will find out if it is real or not in the very near future.
Forum: Engines and Propulsion Systems 27-09-2011, 23:38
Replies: 38
Views: 6,229
Posted By Jd1
Re: Hybrid propulsion - I just don't get it

I would agree 100% based on the point of view you are taking. If you expand your premise though and include many short runs in and out of harbours for a sail boat, maybe running the main engine just...
Forum: Engines and Propulsion Systems 27-09-2011, 21:17
Replies: 38
Views: 6,229
Posted By Jd1
Re: Hybrid propulsion - I just don't get it

I am sorry, I am not familiar with a rating of HP/Gal/hr. All my diesel experience is based on land based stationary engines.
I would agree that a 15% to 20% change in efficiency sounds reasonable ...
Forum: Engines and Propulsion Systems 27-09-2011, 19:45
Replies: 38
Views: 6,229
Posted By Jd1
Re: Hybrid propulsion - I just don't get it

Definitively incorrect even if you don't include the reduced life expectancy of a diesel engine run at low output power and for short runs.
Forum: Engines and Propulsion Systems 27-09-2011, 19:42
Replies: 38
Views: 6,229
Posted By Jd1
Re: Hybrid propulsion - I just don't get it

I just have to add my 2 cents .....
There are lots of reasons for a diesel electric drive system and I would not be surprised if, despite additional complexity, the overall economics prove diesel...
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