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

No load on engine and torque?

No load on engine and torque?

No load on engine and torque?

Hi guys,

I was wondering, if an engine has no load on it, but is running at 1800RPM (roughly) would the torque output be 0?


RE: No load on engine and torque?

Did you mean something else when you said it "has no load on it?"

RE: No load on engine and torque?

Like any measurement, torque is defined based upon reference from a zero point. Torque might be zero if you discount internal engine and dyno friction, if you include them it may be surprisingly large.

RE: No load on engine and torque?

By definition the torque output of an engine IS the load on the engine.

RE: No load on engine and torque?

No load on the engine PTO would imply no braking torque applied. BMEP versus IMEP.

RE: No load on engine and torque?

Maybe drive the engine at 1800rpm with an electric motor and measure the power needed to do this? There doesn't seem to me to be a simple way of estimating/calculating the power needed.

RE: No load on engine and torque?

If the measuring device is not loading the engine then it would essentially read zero. So yes output is zero.
Internally still takes torque and power to move the mechanical parts and the air.

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! Already a Member? Login


eBook - Simulation-Driven Design With SOLIDWORKS
Simulation-driven design can reduce the time and cost of product development. In this engineering.com eBook, we’ll explore how SOLIDWORKS users can access simulation-driven design through the SOLIDWORKS Simulation suite of analysis tools. Download Now
eBook - Integrating the Engineering Ecosystem
Aras Innovator provides multiple options for integrating data between systems, depending on the scenario. Utilizing the right approach to meet specific business requirements is vital. These needs range from authoring tools, federating data from various and dissimilar databases, and triggering processes and workflows. Download Now
Research Report - Simulation-Driven Design for SOLIDWORKS Users
In this engineering.com research report, we discuss the rising role of simulation and the paradigm shift commonly called the democratization of simulation. In particular, we focus on how SOLIDWORKS users can take advantage of simulation-driven design through two analysis tools: SOLIDWORKS Simulation and 3DEXPERIENCE WORKS. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close