I need better fuel economy here, a 4 cyl would help!! - Page 2

groomsie · 09-30-08, 10:55 AM

Quote:

Originally Posted by Quillan

Even with a fully charged battery set, you still burn fuel sitting still on the surface. It's just not much. Once I'd been sent on a 7 day patrol of the Marshal Islands (where there are no ships, not even friendly). I spent the entire week stationary on the surface, and burned off 2% diesel while doing so.

And to me that seems to be as it should be...after all, even sitting stationary you will have an electric demand to satisfy (unless you sit cold and dark...) to run lights, radar, ventillation, etc... Not sure if 2% seems high or low, but I agree it should be something.

groomsie · 09-30-08, 11:09 AM

Well, my understanding of "real life" is to charge batteries the engineers placed engines on the generator, and the engines on the generator ran at capacity to recharge the battery. With 4 engines available, I think typical was to place 1 on generator and anywhere from 1 to 3 on propulsion (depending on if they needed to go anywhere and--if so--how fast they needed to get there).

So, if you assume 1 engine on generator at capacity then I'd think that while charging the fuel consumed should be equal to a single diesel running at capactity for the duration of the charge.

I don't think speed was impacted per se unless at the upper ends of the range when that 4th engine would be called into service--since it isn't available for propulsion but instead being used to recharge then the speed would be impacted.

For the game though it seems to model only 2 engines (and we can't control them imdividually) with a speed reduction at all requested engine orders while the batteries are being charged. A simplification that deviates from reality but so be it. It would be cool if all 4 engines were in fact modeled and brought on / taken off line as needed for charging and propulsion needs. Not sure if that could be done in a mod (or if the benefit is worth it if it could). My gut feeling is it is hard-coded.

09-30-08, 11:09 AM	#2
groomsie Electrician's Mate Join Date: Jun 2008 Location: Stoughton, WI Posts: 140 Downloads: 50 Uploads: 0	Real Life... Well, my understanding of "real life" is to charge batteries the engineers placed engines on the generator, and the engines on the generator ran at capacity to recharge the battery. With 4 engines available, I think typical was to place 1 on generator and anywhere from 1 to 3 on propulsion (depending on if they needed to go anywhere and--if so--how fast they needed to get there). So, if you assume 1 engine on generator at capacity then I'd think that while charging the fuel consumed should be equal to a single diesel running at capactity for the duration of the charge. I don't think speed was impacted per se unless at the upper ends of the range when that 4th engine would be called into service--since it isn't available for propulsion but instead being used to recharge then the speed would be impacted. For the game though it seems to model only 2 engines (and we can't control them imdividually) with a speed reduction at all requested engine orders while the batteries are being charged. A simplification that deviates from reality but so be it. It would be cool if all 4 engines were in fact modeled and brought on / taken off line as needed for charging and propulsion needs. Not sure if that could be done in a mod (or if the benefit is worth it if it could). My gut feeling is it is hard-coded.