Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 05-02-2013, 13:24   #1
Registered User
 
GB Man's Avatar

Join Date: Jan 2009
Location: San Francisco
Boat: Grand Banks 49 Classic
Posts: 7
FUEL SYSTEM

Hello- Was hoping to get a few opinions on a planned fuel system. Looking for flexibility while still trying to keep it somewhat simple. This system uses a fuel supply manifold AFTER the primary fuel filters, than both the genset AND main draw fuel from the same filter. The concerns raised have been the possibility of pulling air into the fuel system for instance when running the main and not the genset, or vice versa... I could put check valves in the line to prevent this, but that just adds another point of failure. I like this system as i don't need to have a unique line and filter for each engine. Your thoughts would be much appreciated... Thanks!!!
Attached Thumbnails
Click image for larger version

Name:	Fevik Fuel System.gif
Views:	106
Size:	52.0 KB
ID:	54079  
__________________
GB Man is offline   Reply With Quote
Old 05-02-2013, 18:22   #2
Do… or do not
 
s/v Jedi's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 9,198
Re: FUEL SYSTEM

Yes, you need separate filters. Here is the ultimate setup which uses three manifolds and two pumps:

You can read about it on my blog here: A new fuel system for Jedi (English) - s/v Jedi

cheers,
nick.
Attached Thumbnails
Click image for larger version

Name:	image.jpg
Views:	112
Size:	102.0 KB
ID:	54084  
__________________
s/v Jedi is offline   Reply With Quote
Old 05-02-2013, 19:03   #3
Senior Cruiser
 
delmarrey's Avatar

Cruisers Forum Supporter

Join Date: Mar 2003
Location: Now in Blaine, WA
Boat: Modified Choate 40
Posts: 10,702
Images: 122
Re: FUEL SYSTEM

I would also separate the P/S return lines. W/o some kind of metering system all the return fuel could be going to one tank.

And I'm not sure if I'd splice any of the return lines together. Ya don't know what back pressure may do to the mated machinery if it were not running.

In hydraulic systems the return line is always the largest & metered to carry all return lines so that there is no back pressure on any of the pumps/cylinders.
__________________
Faithful are the Wounds of a Friend, but the Kisses of the Enemy are Deceitful! ........
A nation of sheep breeds a government of wolves!

Unprepared boaters, end up as floatsum!.......
delmarrey is offline   Reply With Quote
Reply

Tags
fuel

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 19:46.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.