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Summary of change:
*knock_act function seems with MAJOR bug "if (kc->cnt){return;}". So while advance timer count and engine knocking -> no retard applied and knock event skipped. For example advance_delay=100 (1.5sec), checking for knock will be ONCE in 1.5sek, all other events (even with knock_val above threshold) will be skipped. Condition should be moved to branch "if (knock_state == kc->state) {}" (if same state only, else change state and count from begin) *Separate gain needed for each cyl, not channel, but cyl (h[3] for example) *I tried intergator constant depended from rpm, data rise rapidly with rpm, so fixed constant works better. *I think noise window should be dropped and replaced with noise map (same bins as VE table). *I also tried to add additional condition for knock check. mean_val=mean_val*15/16+knock_val/16; if (knock_val>mean_val*configurable_constant) {KNOCK} *Also i added separate noise reference values for each cyl (h[4] for example), so threshold value = noise map value * reference value. And selfcalibration for reference values and gain possible, average of knock values when 2000<rpm<2500 and map<30kpa. If too big or too small then change gain. *I have dropped retard delay, because retard sould be at each knocking event without any delay. http://www.vems.hu/files/MembersPage/Andrey/KnockAction.JPG http://www.vems.hu/files/MembersPage/Andrey/KnockCalibration.JPG http://www.vems.hu/files/MembersPage/Andrey/KnockNoisetable.JPG http://www.vems.hu/files/MembersPage/Andrey/KnockSampling.JPG
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