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Constant Speed Governor


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#1 ShotgunWedding OFFLINE  

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Posted March 01, 2018 - 10:13 AM

Hey guys, quick question for anyone who knows.  Many of the newer tractors with EFI have constant speed governors.  What exactly does that mean?  Does that mean that the operator can't idle the engine and has no input to RPM of the engine...that the computer takes full control?  Is it always at 3600 RPM?



#2 propane1 ONLINE  

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Posted March 01, 2018 - 05:06 PM

I have never heard of that, but I looked it up on Google. Look this up, it may or may not be the answer your lookin for, 

Difference between constant speed and variable speed engines ...

Hope this helps, 

 

Noel


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#3 ShotgunWedding OFFLINE  

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Posted March 01, 2018 - 05:17 PM

Thanks Noel, seems to make sense.  John Deere X590 tractor with their 25HP EFI engine has this on it.  Seems strange.  I can see wanting to keep the blades humming at max speed all the time, but this kind of accuracy seems a bit over-rated.


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#4 Bolens 1000 ONLINE  

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Posted March 01, 2018 - 06:17 PM

just means no adjustable speed, it only has one setting



#5 MiCarl ONLINE  

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Posted March 01, 2018 - 06:22 PM

From Deere on the X590:

 

 

  • Constant-speed governor

    • Constant-speed governor works in conjunction with EFI to electronically adjust the supply of fuel air mixture, to increase torque as needed to maintain engine operating speed under load.
    • Ground speed and mower blade-tip speed remain constant, even in heavy-grass conditions, to improve productivity and cut quality.
      • Mechanical governors cannot respond fast enough to maintain a constant engine speed.
    • Some torque rise remains to warn the operator before the engine stalls.
    • X590's constant-speed governor is a first in the mowing industry.

 

I read that to mean their electronic governor is faster responding than a mechanical governor.  Does the same job though.

 

We're all familiar with mowing and hitting thick stuff where the engine momentarily slows down before the governor gets the throttle open.  Presumably this system reduces that effect.


Edited by MiCarl, March 01, 2018 - 06:24 PM.

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#6 ShotgunWedding OFFLINE  

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Posted March 02, 2018 - 09:21 AM

Thanks MiCarl!!






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