Jump to content

injector dead time by volts


stephan

Recommended Posts

hello 

l use G4+fury ecu,

the problem l have is dead time cycle on battery volt,  have no charging systeme used. !!!

Dragbike with 2 injector by intake runner.

1- l made a run at 13 volts bike run good on AFR 13.2

2- made another run and battery volt drop to 12.23 AFR look rich  11.5  a setup the fuel again to 13.2 AFR  going to another run battery volt going to 12.45 volt  AFR is good 13.2

3- next run exemple: battery volt going 13.v again AFR going to be very lean again..16.1 at top end ... it`s look the injector dead time table dont work good.  with Variance of volt.

thank you

Stephan 

Link to comment
Share on other sites

Deadtime can make quite a difference to Afr at low rpm where it is a significant proportion of the injector pulsewidth but if you are seeing afr changing at high rpm/load then it is unlikely related to deadtime as it is then a much smaller proportion of total pulsewidth.

You can log actual pulsewidth, effective pulsewidth and deadtime if you want to see what has been applied.  I would also suggest you log fuel pressure.

Link to comment
Share on other sites

  • Adamw
  • Moderators
  • team_staff.png
  •  162
  • 1,337 posts

what could create this problem , with out fuel systeme:  fuel pressure alway good, injector test check on flow bench all is ok.

Always variation on AFR when volts change. where to look ??  problem is here since installation ... 

 

 

 

Link to comment
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.

×
×
  • Create New...