Air Flow Measurement

[RABBITT_Andrew at mv8.orbeng.com.au]

>Thank you for your feedback, very interesting reading, but of course 
>I now have other questions/comments.

thanks too, your input is much appreciated!

>>The response to a step increase is faster than a step decrease in 
>>airflow.  This means that if you have pulsating airflow, the signal 
>>is skewed upwards, including the average.
>
>Ok, I though about it alot, and finally talked to all of my ME/ESM 
>buddies and none of us can think of why this happens.

I'm still trying to get my head around why this is so.  Take a look at 
SAE paper # 880561 - 'Frequency Domain Characterisation of Mass Air 
Flow Sensors'.  It illustrates this point well including some 
experimental examples.  As I said though, the theory behind it is 
still fuzzy in my brain.  If you can shed some light on it I'd be 
extremely grateful.

Andrew Rabbitt