Jump to content
Nettlez

Hold Step Idle Control

Recommended Posts

So with the g4+ running in closed loop idle control there is an option for hold step. From the information in the help file I still don’t understand what this does? What does it do? What is an example of a hold mode? 

Also what do the values in the startup step table represent? Is it a percentage of base position table or a multiplier? 

Share this post


Link to post
Share on other sites

Hold step applies in the scenario where you are driving at above idle rpm (say 4k), then you put in the clutch and get off the gas - lets say you want to roll to a stop. As your revs drop, you want it to initally hold a few hundred RPM higher than idle so that it doesnt shoot staright past idle rpm and stall. Hold step is the amount of "extra" idle valve %/steps that is initally applied to catch the dropping revs, above what your idle table would normally command.

EG your idle is normally 800rpm @ 50% idle control opening. hold step is 5%. when you get off the gas from high rpm, the idle valve will sit at 55% open, which means your rpm might be say 1000 for a couple seconds then it will drop gradually down to its normal 800 (50% valve opening) over a second or 2 - exact speed depends on various idle response parameters.

Startup table is added to your base table to decide the amount of idle valve opening during startup and the first 3 seconds after startup (ie it fades out to normal idle numbers during those 3 seconds)

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

×
×
  • Create New...