×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Diesel Engine Return System

Diesel Engine Return System

Diesel Engine Return System

(OP)
I have a question concerning return systems.

Normally, return lines feed directly back to fuel tanks.  

However, in a plan I'm currently looking at, the fuel system return lines are plumbed back to a common manifold and fed directly back into the fuel system.

The return lines off machinery are fitted with check valves.

Although not typical, is this arrangement good or bad?

Thanks

Ken  

RE: Diesel Engine Return System

Good.

Returnless fuel systems are generally a good thing, so long as you can keep the fuel near the engine cool enough. It may be worth investing in a variable rate pump to make sure that the fuel is not being recirculated unneccesarily. That depends on your application.

Cheers

Greg Locock

RE: Diesel Engine Return System

Ken,

This type of system is now normal on diesel/HFO fired power stations. The return line feeds to a small vessel where it is mixed with new fuel coming from the service tank.
The circulation rate in the system is generally set at 3 to 4 times the fuel consumption rate.
A point to remember is where to position your fuel meter (if used). It must be installed just before the mixing vessel so that you dont measure return fuel!

What type of application are you looking at? I have some P&I diagrams if you are looking at power plant type system.

Cheers
Gordon

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources