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Summary of change:
The car: Opel Astra G Z20LET 2.0 16V Turbo with GTX3076 ETC throttle body (dummy ETC, similar is working and tuned in a similar engine) Primary trigger: VR 60-2 stock Secondary: HALL Ignition coils from Audi VAG COP, connected to protected stepper output. Factory engine does NOT have a stepper IAC at all, right ? *There is not IAC but have chance of use if it is necessary. It is a hibrid engine. There are some parts from Z20LET and some from C20LET. ---- Cruise control (tempomat). Experimental first stage: ETC will be tuned normal. * with config/table switching, and careful experiment, some ETC tuning will be attempted in gear5 ** analyzing the logs; study feasibility (if same control strategy, with suitable parameters are OK, or strategy changes needed). ** if conclusion is positive, implement adjustable RPM-target with the usual cruisecontrol interface: the clutch and perhaps the brake input on direct mcp3208 input: some others on analog input multiplexer inputs) 1 EGT 2nd RS232 ( not strictly needed, but potentially useful for Smartbridge ) Some of the VEMS analog inputs (planned to) be programmed to function: * '''cruisecontrol''' ("Tempomat") '''activation switch'''. ** when just activated (with speedincdec input in mid 2-3V state verified) => Latch RPMtarget=actual RPM * Speed increase/decrease button (mid / high / low states). In mid position the analog input voltage is appr 2-3Volt. high and low states: ** high: 4-5V RPMtarget++ (when mid => high transition is detected after min 0.2 sec after previous similar) ** low: 0-1V RPMtarget-- (might continuously decrease RPM if kept in low; deactivates cruisecontrol if RPMtarget <= idle RPM) * Clutch position switch : launch control and, WOT shiftcut ** when this input is activated, it deactivates cruisecontrol * Brake pedal position switch. Like clutch pedal: deactivates cruisecontrol * PPS or ETC off-target also deactivates cruisecontrol * RPM > RPMtarget * 1.03 also deactivates cruisecontrol (=> idle target, with the usual safety mechanisms) ---- '''Traction control experiment''' * anytrim based boosttarget ** from 1st and 2nd wheel speed difference. ** does not need analog input because i can switch off the second wheel speed signal (for the driven wheel wheelspeed=0) ---- VEMS ECU is ordered with * 1 EGT + 5 direct analog inputs to mcp3208. ** 2 with pullup ** 3 no pullup * and 8 analogmultiplexer inputs ** appr 4 will be used for operation ** maybe others for logging
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