Hi-resolution Crank angle sensor

[Andrew Dalgleish]

On Thursday, 29 February 1996 20:01, owner-diy_efi-outgoing wrote:
[snip]

> position sensing.  For a DIS type system, should be easy to substitute   
an
> optical encoder for the guts of the distributor and get any timing   
accuracy
> you want.
[snip]

> ---------------------------------------------------------------------
>  Darrell A. Norquay              Internet: dn at dlogtech.cuc.ab.ca
>  Datalog Technology Inc.         Bang: calgary!debug!dlogtech!darrell
>  Calgary, Alberta, Canada        Voice: +1 (403) 243-2220
>                                  Fax:   +1 (403) 243-2872
>     @ +
>      <
>     __/    "Absolutum Obsoletum" - If it works, it's obsolete
> --------------------------------------------------------------------
>

I tried this about 10 years ago when I did my first 6809-based ignition   
system on a Nissan A14.
The trouble was my system wasn't particularly reliable so I had to carry   
a normal distributor in the boot and swap them to get home :-)
You also have a small amount of mechanical back-lash in the distributor   
drive.
My ideal would be phase from the crank-shaft, and an index pulse from the   
cam-shaft for TDC.

Regards,
Andrew Dalgleish
Axon Research, Pty Ltd
6 Wallace Ave,
Toorak, VIC
3142
AUSTRALIA
Tel +61-3-9826-5538
Fax +61-3-9824-0083