[Diy_efi] Bosch Air Flow Meter info please

Fri Jun 14 16:59:31 GMT 2002

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It looks like the DC voltage output of these mechanical vane meters (The pot 
wiper) may be a linear function of air flow; Is this true? What is the 
function of the resistor from the top of the pot to the ECU? One end may 
connect to the battery and the resistor pot junction appears to be a 
regulated 6.8 VDC (Maybe a Zener in the ECU).  
I'm trying to make a plug-in replacement ECU for a, no longer available, 
Bosch L-Jetronic analog ECU.
Thanks, 
Jim

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<HTML>It looks like the DC voltage output of these mechanical vane meters (The pot wiper) may be a linear function of air flow; Is this true? What is the function of the resistor from the top of the pot to the ECU? One end may connect to the battery and the resistor pot junction appears to be a regulated 6.8 VDC (Maybe a Zener in the ECU).&nbsp; 
I'm trying to make a plug-in replacement ECU for a, no longer available, Bosch L-Jetronic analog ECU. 
Thanks, 
Jim</HTML>

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