Knocksensing with HIP 9010

Nils Björkman nisse at hisstema.se
Fri Mar 19 15:09:19 GMT 1999


Wrong of me, I don´t know what I was thinking with (My toes or what ??)
but still the same question:

How to determin right values for Resistors and Capasitors using HIP 9010
for knocksensing of my engine.

Thanks

Nils

<Hi

<Im going to design my own efi based on an PIC 16C74A microcontroller.

<I am going to use the Harries HIP 9010 Knock sensor circuit for
feedback
<of air/fuel mixture.
<I have downloaded all schamatics, datasheets and other I hav found, but

<not find any information about suitable components (resistors and
<capacitors) around the circuit.
<How do I know that the circuit works, and how should I test my circuit
<to be sertain that it doesn´t miss any knocks. If  I´m justy beleaving
<that the sensor works and it doesn´t my wngine will probably be no more

<pretty soon. What output should I look for, values for R1-R4, program
<parameters etc. are still a mystery for me.

<My engine is a Volvo B23 (2.3 liter) 4 cylinder, Liqid cooled, Cast
iron
<block and aluminium head, converted for use in boat, liquidcooled
<exhaust, max rpm aprox 6000 rpm, unleaded 95 octan fuel.

<Does anybody have information so pleas let me know, my project is on
<hold till I knnow how to do with knocksensing.

<Thanks

<Nils






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