And for our Next Trick ... How 'bout a diyTrionic?

[Scott Mo.]

Here are some other SAE technical Paper listings that I found doing a
search for " ionization". They may be useful for the DIY Trionic stuff. 

There is also one related to the SAAB direct ignition system in 1989. 

  Document Number: 890044
  Title: Saab direct ignition system and its cold start performance
  Publication Date:1989
  Author(s):Jiewertz, Sten; Klemisch, Bobby; Anderland, Torsten;
Gillbrand, Per S.
  Organization(s):Saab-Scania AB, Sweden; Saab-Scania AB, Sweden;
Saab-Scania AB, Sweden; Saab-Scania AB, Sweden

Check out this one from 1959.......Nuclear dude!

590186
  Title:Engine voltage requirements using spark plugs pre-ionized with
"radioactive" gold
  Publication Date:1959
  Author(s):Gumbleton, J. J.
  Organization(s):Engrg. Staff, General Motors Corp.
________________________________________________________________

ionization search:

  Document Number:980166
  Title:In-cylinder air/fuel ratio approximation using spark gap
ionization sensing
  Publication Date: Feb 1998
  Author(s):Balles, Eric N.; VanDyne, Edward A.; Wahl, Alexandre M.;
Ratton, Kenneth; Lai,Ming-Chia
  Organization(s): Adrenaline Research, Inc.; Adrenaline Research, Inc.;
Adrenaline Research, Inc.; Wayne State Univ.; Wayne State Univ.


  Document Number:980048
  Title:Real-time analysis of particulate matter by flame ionization
detection
  Publication Date: Feb 1998
  Author(s): Kawai, Terunao,; Iuchi, Yutaka; Nakamura, Shigeo; Ishida,
KozoOrganization(s): The University of Shiga Prefecture; Horiba Ltd.;
Horiba Ltd.; Horiba Ltd.Meeting: SAE International Congress and
Exposition

  Document Number:970857
  Title:In-cylinder pressure measurements using the spark plug as an
ionization sensor
  Publication Date:Feb 1997
  Author(s): Saitzkoff, Andr\ae; Reinmann, Raymond; Mauss, Fabian;
Glavmo, Magnus 

  Document Number:970856
  Title:Local air-fuel ratio measurements using the spark plug as an
ionization sensor
  Publication Date: Feb 1997
  Author(s):Reinmann, Raymond; Saitzkoff, Andr\ae; Mauss, Fabian;
Glavmo, Magnus

  Document Number:970507
  Title:Measurements of the effect of in-cylinder motion on flame
development andcycle-to-cycle variations using an ionization probe head
gasket
  Publication Date:Feb 1997
  Author(s):Russ, Stephen; Peet, Gregory; Stockhausen, William
  Organization(s): Ford Motor Co.; Ford Motor Co.; Ford Motor Co.

  Document Number:970854
  Title:Closed loop ignition control by ionization current
interpretation
  Publication Date:Feb 1997
  Author(s):  Eriksson, Lars; Nielsen, Lars; Glavenius, Mikael


  Document Number:961201
  Title:Validation tests for a fast response flame ionization detector
for in-cylinder sampling near the spark plug
  Publication Date:May 1996
  Author(s):Crawford, John G.; Wallace, James S.
  Organization(s):University of Toronto; University of Toronto

  Document Number:960329
  Title:Spark ionization controller for vehicle ignition systems
  Publication Date: Feb 1996
  Author(s):Marlow, C. Allen
  Organization(s):SGS-THOMSON Microelectronics

  Document Number: 960337
  Title: An ionization equilibrium analysis of the spark plug as an
ionization sensor
  Publication Date: Feb 1996
  Author(s):  Saitzkoff, Andr\ae; Reinmann, Raymond; Berglind, Thomas;
Glavmo, Magnus

  Document Number:960045
  Title: Ignition control by ionization current interpretation
  Publication Date:Feb 1996
  Author(s): Eriksson, Lars; Nielsen, Lars; Nytomt, Jan

  Document Number:952458
  Title:Flame propagation and laminar burning velocity measurements in a
cylindrical combustion chamber using particle image 
  Publication Date:Oct 1995
  Author(s):Zhou, M.; Garner, C. P.
  Organization(s): Loughborough University of Technology; Loughborough
University of Technology

  Document Number:950814
  Title:Cycle-by-cycle variations in combustion and mixture
concentration in the vicinity of spark plug gap
  Publication Date:Feb 1995
  Author(s):Lee, Kyung-Hwan; Foster, David E.
  Organization(s): Hyundai Motor Co.; University of Wisconsin
  Document Number:950109
  Title:A model for converting SI engine flame arrival signals into
flame contours
  Publication Date:Feb 1995
  Author(s):Hadjiconstantinou, Nicholas; Heywood, John B.
  Organization(s): MIT; MIT


  Document Number:952541
  Title:Signal reconstruction applied to a fast response flame
ionization detector
  Publication Date:Oct 1995
  Author(s):Summers, T.; Collings, N.



  Document Number:950160
  Title: Modelling the transit time of a fast response flame ionization
detector during in-cylinder sampling
  Publication Date: Feb 1995
  Author(s): Summers, Tim; Collings, Nick

  Document Number:950003
  Title:Engine misfire detection by ionization current monitoring
  Publication Date: Feb 1995
  Author(s):Lee, Anson; Pyko, Jan S.
  Organization(s):Chrysler Corp.; Chrysler Corp.



  Document Number:941987
  Title:Flame shape determination using an optical-fiber spark plug and
a head-gasket ionization probe
  Publication Date:Oct 1994
  Author(s):Salvat, Olivier P.; Cheng, Aldebert S.; Cheng, Wai K.;
Heywood, John B.
  Organization(s):P.S.A. Peugeot Citro\agn; Sloan Automotive Lab.;
Massachusetts Institute of Technology; Sloan Automotive Lab.;
Massachusetts Institute of Technology; Sloan Automotive Lab.;
Massachusetts Institute of Technology


  Document Number:941991
  Title: Combustion imaging in engine using electrical impedance
measurements
  Publication Date: Oct 1994
  Author(s):Beck, C. M.; He, R.; Waterfall, R. C.; Beck, M. S.
  Organization(s):Shell Research Ltd.; University of Manchester
Institute of Science and Technology; University of Manchester Institute
of Science and Technology; University of Manchester Institute of Science
and Technology

  Document Number:930464
  Title:Simultaneous application of optical spark plug probe and head
gasket ionization probe to a production engine
  Publication Date:Mar 1993
  Author(s):Meyer, Roy; Kubesh, John T.; Shahed, S. M.; Davis, J.


  Document Number:930462
  Title:Flame ion density measurement using spark plug voltage analysis
  Publication Date:Mar 1993
  Author(s): Miyata, Shigeru; Ito, Yasuo; Shiwasaki, Yuichi
  Organization(s): NGK Spark Plug Co.; NGK Spark Plug Co.; Honda R&D
Co., Ltd



  Document Number:922236
  Title:Electrohydrodynamic ignition system for S.I. engines
  Publication Date:1992
  Author(s):Hacohen, J.; Belmont, M. R.; Thurley, R. F. W.; Thomas, J.
C.; Morris, E. L.; Buckingham, D. J.
  Organization(s):University of Exeter; University of Exeter; University
of Exeter; University of Exeter; University of
                    Exeter; University of Exeter



  Document Number:932645
  Title:Determining the location of end-gas autoignition using
ionization probes installed in the head gasket
  Publication Date:Oct 1993
  Author(s): Witze, P. O.; Green, R. M.

  Document Number:930390
  Title:Flame location measurements in a production engine using
ionization probes embodied in a printed-circuit-board head gasket
  Publication Date:Mar 1993
  Author(s):Nicholson, D. E.; Witze, P. O.
  Organization(s):
 General Motors Corp.; Sandia National Labs.





  Document Number:910719
  Title: Investigation of in-cylinder fluid motion using a head gasket
instrumented with ionization probes
  Publication Date:1991
  Author(s):Witze, Peter O.; Bopp, Stefan C

  Document Number: 892099
  Title:Cycle-resolved multipoint ionization probe measurements in a
spark- ignition engine
  Publication Date:1989
  Author(s): Witze, Peter O.

  Document Number:885068
  Title:Closed loop control of spark-ignition engines (application to
the fuel system)
  Publication Date: 1988
  Author(s): Lefebvre, C.; Banet, G.; Ecomard, A.
  Meeting: 22nd FISITA Congress (1988), Dearborn, Michigan, USA

  Document Number: 860485
  Title:In-cylinder measurement of combustion characteristics using
ionization sensors
  Publication Date: 1986
  Author(s): Anderson, Robert L.
  Organization(s): Ford Motor Co., Electrical and Electronics Div.,
Dearborn, MI

  Document Number:860635
  Title:Knock detection by means of the spark plug
  Publication Date:1986
  Author(s):Collings, Nick; Dinsdale, Steve; Eade, Derek
  Organization(s):Univ. of Cambridge, U.K.; Univ. of Cambridge, U.K.;
Ford Motor Co., Basildon U.K.

  Document Number:750354
  Title:Significance of burn types, as measured by using the spark plugs
as ionization probes, with respect to the hydrocarbon emission levels in
S.I. engines
  Publication Date:1975
  Author(s):Rado, William G.; Johnson, Wayne J.
  Organization(s):Ford Motor Co.; Ford Motor Co.

  Document Number:730088
  Title: Turbulent flame structure as determined by pressure development
and ionization intensity
  Publication Date:1973
  Author(s): Arrigoni, V.; Calvi, F.; Cornetti, G. M.; Pozzi, U.
  Organization(s): SNAM Progetti (Italy); SNAM Progetti (Italy); SNAM
Progetti (Italy); SNAM Progetti (Italy)
  Meeting: International Automotive Engineering Congress and Exposition

  Document Number:730087
  Title:Relationship of flame front pattern to pressure and high-speed
knock on commercial engines
  Publication Date:1973
  Author(s): Chiampo, P.; de Cristofaro, F.; Gozzelino, R.
  Organization(s): Fiat S.p.A.; Fiat S.p.A.; Fiat S.p.A.
-- 
Scott Mo.
1989 Audi 200TQ
1988 Audi 5000TQ
1984 Audi 4000S
1966 VW Beetle
http://www.teleport.com/~scottmo