Qustions, boost control & Bosch igniton modules.

[James Ballenger]

	Some of the 7 pin Bosch ignition modules are "dumb" meaning they just turn
on and off the coil and some are "smart" meaning they have auto-dwell built
into them.  Whether they are dumb or smart is completely dependant on their
part #.  Based on the part #, I or others here may be able to tell you if
they are smart or dumb.  You can also take a look out on the internet with
the part # to check it out.

James Ballenger

> -----Original Message-----
> From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
> Behalf Of Klas Arvidsson
> Sent: Friday, April 20, 2001 1:46 PM
> To: diy_efi at diy-efi.org
> Subject: Qustions, boost control & Bosch igniton modules.
>
>
>
>
>
> Hi my name is Klas and I am working on a ignition and fuel
> injection system
> based on a pic16f877.
> I tried a simple boost control program working as:
> if boost_over_allowed then
> turn_on_wastegate_valve
> else
> turn_of wastegate_valve
> Now this did not work very vell, the boost is fluctuating
> about 0.1 bar
> which makes the car a bit strange to say the least. Now I was
> thinking of
> PWM control instead. But what i do not know is what frequency
> i should use?
> 40Hz 10Hz ? Higher? Anybody have any ideas?
> My next question is what is inside those little black 7 pin
> bosch ignition
> modules (Fitted to many mid 80:s european cars.). Does it
> incorporate some
> sort of "smart" dwell circutry or does it only turn on and
> off the coil?
>
> klas
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