Transfer function for stock AFM?
Thread Starter
MegaSquirt Mod
Joined: Sep 2004
Posts: 4,721
Likes: 1
From: Maryland
Transfer function for stock AFM?
I was just wondering if anyone had an airflow vs output voltage transfer function for the S4 and S5 MAFs.
I'm trying to do some comparison and experimentation with Speed Density vs MAF/AFM modes for the ms3 (eventually want to include the ability to use AFM and MAF... ) but I have not been able to find the stock transfer functions.
Ken
I'm trying to do some comparison and experimentation with Speed Density vs MAF/AFM modes for the ms3 (eventually want to include the ability to use AFM and MAF... ) but I have not been able to find the stock transfer functions.
Ken
Rotorhead
Joined: Feb 2001
Posts: 9,136
Likes: 39
From: Charlottesville, Virginia, USA
This is the closest I have seen:
http://howto.globalvicinity.com/gv_w...=120&co=1&vi=1
http://howto.globalvicinity.com/gv_w...=120&co=1&vi=1
Thread Starter
MegaSquirt Mod
Joined: Sep 2004
Posts: 4,721
Likes: 1
From: Maryland
Both interesting, but not exactly what I was hoping for...
I was hoping I'd be able to find CFM or CC/min to voltage...
I'm trying to avoid having to take the different AFMs to a flow-bench if someone has already found this information documented somewhere.
It's pretty easy to find the transfer functions for modern hotwire MAFs so I'm not worried about those, but I'd like to be able to support those and older AFMs.
Ken
I was hoping I'd be able to find CFM or CC/min to voltage...
I'm trying to avoid having to take the different AFMs to a flow-bench if someone has already found this information documented somewhere.
It's pretty easy to find the transfer functions for modern hotwire MAFs so I'm not worried about those, but I'd like to be able to support those and older AFMs.
Ken
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