[Diy_efi] variable-frequency MAP/MAF sensors questions

[The Punisher]

The GM MAF sensors currently in use on the LS1/LS6 go up to about 15Khz at 
max flow.

On a 600+hp LS-6 I observed 3.5 Khz at idle. A normal engine should be alot 
lower. So if you design youre unit to work from 0-15Khz you should do fine.


From: Sergio Alejandro Gonzalez <sagonzal at fi.mdp.edu.ar>
>Reply-To: diy_efi at diy-efi.org
>To: diy_efi at diy-efi.org
>Subject: [Diy_efi] variable-frequency MAP/MAF sensors questions
>Date: Tue, 13 Aug 2002 10:51:51 -0300
>
>Dear DIY Folks:
>
>I am new to the list and. I'am currently involved in a project were we 
>control a stepper motor in order to change the AFR in natural gas fed 
>combustion engines.
>My question is regarding variable-frequency MAP/MAF sensors found in many 
>OEM systems:
>
>Which are the max and min frequency ?
>Does anyone has the specs or datasheets of these sensors ? (greatly 
>appreciated)
>Variable-frequency MAP/MAF are used in what OEM manufacturers ?
>Frequency MAF sensor use the karman vortex principle of operation, but 
>Frequency MAP, what principle use or they just translate analog to 
>frequency ?
>
>OK- Let me introduce myself since I'm very new to the list.  I am a MS-EE 
>at Universidad Nacional de Mar del Plata, I'am currently working in my Phd 
>degree right here in the LIC (Laboratorio de Instrumentación y Control). 
>I'am involved in many power electronics projects and my area of expertise 
>is ee in general and embedded control systems, Texas and ADI DSPs and 
>Mircochip microcontrollers.
>
>Thanks a lot in advance and very best regards...
>
>	Eng. Sergio Alejandro Gonzalez
>	e-mail : sagonzal at fi.mdp.edu.ar
>	Facultad de Ingeniería - Laboratorio de Instrumentación y Control 
>Universidad Nacional de Mar del Plata
>	Ave. Juan B. Justo 4302
>	Mar del Plata, Bs.As.
>	Argentina.
>	Zip B7608FDQ
>	Tel. +54(223) 481-6600 ext.254
>	Fax.+54(223) 481-0054
>
>
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