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


What is no load condition and full load condition in Engine Testing ?

What is no load condition and full load condition in Engine Testing ?

What is no load condition and full load condition in Engine Testing ?

What is the difference between no load engine running and full load running?

RE: What is no load condition and full load condition in Engine Testing ?

Well, on a dyno, for no load we set the the dyno load to zero, and gently open the throttle up, so the rpm sweeps up from idle.

for full throttle, we open the throttle up all the way, and then adjust the dyno load to sweep through the full range of rpm. It is often easier to do that from the red line down.


Greg Locock

New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?

RE: What is no load condition and full load condition in Engine Testing ?

«No load running» means that there is no output torque available. In other words, the throttle is adjusted just enough to maintain the chosen rpm constant.

«Full load running» means that there is the maximum torque that the engine can produced at the chosen rpm available at the crankshaft. This condition always happens at full throttle. To achieve that, you must apply a resistive torque on the crankshaft, otherwise the engine rpm will only increase until the engine's rpm limit (i.e. failure).

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!


Research Report: State of IoT Adoption in Product Development 2019
This research report, based on a survey of 234 product development professionals, examines the current state of Internet of Things (IoT) adoption by product design teams, its perceived importance, and what features and capabilities teams consider important when making decision about adding IoT functionality to their products. Download Now
Research Report: Augmented Reality for Maintenance, Repair and Overhaul (MRO)
The term Industry 4.0 denotes a cluster of technologies that’s poised to fundamentally reshape manufacturing and bring about a new industrial revolution. These include 3D printing (AM), the Industrial Internet of Things (IIoT), artificial intelligence (AI) and mixed reality technologies, more commonly known as virtual reality (VR) and augmented reality (AR). 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