Print Page | Close Window

Governed/ungoverned engine dyno testing

Printed From: Official Baja SAE Forums
Category: General
Forum Name: Design Discussion
Forum Description: Discuss Design, Tech, Cost, and related issues
URL: http://forums.bajasae.net/forum/forum_posts.asp?TID=2755
Printed Date: Mar/28/2024 at 8:27am


Topic: Governed/ungoverned engine dyno testing
Posted By: Gabriel Guerreiro
Subject: Governed/ungoverned engine dyno testing
Date Posted: Nov/10/2018 at 12:42pm
Hello there, I was reading the 'Engine testing: theory and practice' and it says that when you use a dyno on position and torque mode (throttle opening is fixed and the resistive torque of dyno sets the speed) it's needed to leave the engine ungoverned:

"Position and torque mode (governed engines)  Governed engines have a built-in torque–speed characteristic, usually slightly ‘drooping’ (speed falling as torque increases). They are therefore not suited for coupling to a dynamometer in speed mode." 

Anyone here have any idea if this applies to our engine and why it happens? Confused



Print Page | Close Window