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Initial commit of DFCO (Untested on a car, working on bench)

This commit is contained in:
Josh Stewart 2016-02-25 13:11:13 +11:00
parent bb2fcaea11
commit e00019bddc
3 changed files with 33 additions and 24 deletions
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18
corrections.ino
View File

@ -26,11 +26,10 @@ byte correctionsTotal()
byte result; //temporary variable to store the result of each corrections function
//As the 'normal' case will be for each function to return 100, we only perform the division operation if the returned result is not equal to that
//The function divs100 divides a signed int by 100 in a very fast way and is used instead of div() or /
currentStatus.wueCorrection = correctionWUE();
//if (currentStatus.wueCorrection != 100) { sumCorrections = div((sumCorrections * currentStatus.wueCorrection), 100).quot; }
if (currentStatus.wueCorrection != 100) { sumCorrections = divs100(sumCorrections * currentStatus.wueCorrection); }
result = correctionASE();
//if (result != 100) { sumCorrections = div((sumCorrections * result), 100).quot; }
if (result != 100) { sumCorrections = divs100(sumCorrections * result); }
result = correctionCranking();
if (result != 100) { sumCorrections = div((sumCorrections * result), 100).quot; }
@ -39,16 +38,15 @@ byte correctionsTotal()
result = correctionFloodClear();
if (result != 100) { sumCorrections = div((sumCorrections * result), 100).quot; }
currentStatus.egoCorrection = correctionsAFRClosedLoop();
//if (currentStatus.egoCorrection != 100) { sumCorrections = div((sumCorrections * currentStatus.egoCorrection), 100).quot; }
if (currentStatus.egoCorrection != 100) { sumCorrections = divs100(sumCorrections * currentStatus.egoCorrection); }
currentStatus.batCorrection = correctionsBatVoltage();
//if (currentStatus.batCorrection != 100) { sumCorrections = div((sumCorrections * currentStatus.batCorrection), 100).quot; }
if (currentStatus.batCorrection != 100) { sumCorrections = divs100(sumCorrections * currentStatus.batCorrection); }
currentStatus.iatCorrection = correctionsIATDensity();
//if (currentStatus.iatCorrection != 100) { sumCorrections = div((sumCorrections * currentStatus.iatCorrection), 100).quot; }
if (currentStatus.iatCorrection != 100) { sumCorrections = divs100(sumCorrections * currentStatus.iatCorrection); }
currentStatus.launchCorrection = correctionsLaunch();
if (currentStatus.launchCorrection != 100) { sumCorrections = div((sumCorrections * currentStatus.launchCorrection), 100).quot; }
currentStatus.dfcoOn = correctionsDFCO();
if ( currentStatus.dfcoOn ) { sumCorrections = 0; }
if(sumCorrections > 255) { sumCorrections = 255; } //This is the maximum allowable increase
return (byte)sumCorrections;
@ -186,6 +184,16 @@ byte correctionsLaunch()
else { return 100; }
}
/*
* Returns true if decelleration fuel cutoff should be on, false if its off
*/
bool correctionsDFCO()
{
if ( !configPage2.dfcoEnabled ) { return false; } //If the DFCO option isn't turned on, always return false (off)
if (currentStatus.dfcoOn) { return ( currentStatus.RPM > configPage2.dfcoRPM ) && ( currentStatus.TPS < configPage2.dfcoTPSThresh ); }
else { return ( currentStatus.RPM > (configPage2.dfcoRPM + configPage2.dfcoHyster) ) && ( currentStatus.TPS < configPage2.dfcoTPSThresh ); }
}
/*
Lookup the AFR target table and perform either a simple or PID adjustment based on this

20
globals.h
View File

@ -120,6 +120,7 @@ struct statuses {
volatile byte squirt;
volatile byte spark;
byte engine;
bool dfcoOn; //Decelleration fuel cutoff
unsigned int PW; //In uS
volatile byte runSecs; //Counter of seconds since cranking commenced (overflows at 255 obviously)
volatile byte secl; //Continous
@ -246,7 +247,8 @@ struct config2 {
byte dwellCont : 1; //Fixed duty dwell control
byte useDwellLim : 1; //Whether the dwell limiter is off or on
byte sparkMode : 2; //Spark output mode (Eg Wasted spark, single channel or Wasted COP)
byte dwellUnused : 4;
byte dfcoEnabled : 1; //Whether or not DFCO is turned on
byte dwellUnused : 3;
byte dwellCrank; //Dwell time whilst cranking
byte dwellRun; //Dwell time whilst running
@ -265,19 +267,9 @@ struct config2 {
byte dwellCorrectionValues[6]; //Correction table for dwell vs battery voltage
byte iatRetBins[6]; // Inlet Air Temp timing retard curve bins
byte iatRetValues[6]; // Inlet Air Temp timing retard curve values
byte unused50;
byte unused51;
byte unused52;
byte unused53;
byte unused54;
byte unused55;
byte unused56;
byte unused57;
byte unused58;
byte unused59;
byte unused60;
byte unused61;
byte unused62;
byte dfcoRPM; //RPM at which DFCO turns off/on at
byte dfcoHyster; //Hysteris RPM for DFCO
byte dfcoTPSThresh; //TPS must be below this figure for DFCO to engage
byte unused63;

19
reference/speeduino.ini
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@ -120,7 +120,7 @@ page = 2
reqFuel = scalar, U08, 24, "ms", 0.1, 0.0, 0.0, 25.5, 1
divider = scalar, U08, 25, "", 1.0, 0.0
injTiming = bits, U08, 26, [0:1], "Simultaneous", "Semi-Sequential", "Sequential"
;injTiming = bits, U08, 26, [0:1], "Simultaneous", "Semi-Sequential", "Sequential"
alternate = bits, U08, 26, [2:2], "Simultaneous", "Semi-Sequential"
injOpen = scalar, U08, 27, "ms", 0.1, 0.0, 0.1, 25.5, 1
inj1Ang = scalar, U16, 28, "deg", 1.0, 0.0, 0.0, 360, 0
@ -219,6 +219,7 @@ page = 4
dwellcont = bits, U08, 12, [0:0], "INVALID", "Dwell control"
useDwellLim= bits, U08, 12, [1:1], "Off", "On"
sparkMode = bits, U08, 12, [2:3], "Wasted Spark", "Single Channel", "Wasted COP", "Sequential"
dfcoEnabled= bits, U08, 12, [4:4], "Off", "On"
dwellcrank = scalar, U08, 13, "ms", 0.1, 0, 0, 25, 1
dwellrun = scalar, U08, 14, "ms", 0.1, 0, 0, 8, 1
numteeth = scalar, U08, 15, "teeth", 1.0, 0.0, 0.0, 255, 0
@ -248,9 +249,10 @@ page = 4
iatRetBins = array, U08, 48, [ 6], "F", 1.0, 0.0, 0.00, 255.0, 0
#endif
iatRetRates = array, U08, 54, [ 6], "deg", 1.0, 0.0, 0.00, 255.0, 0
unused4-60 = scalar, U08, 60, "RPM", 100.0, 0.0, 100, 25500, 0
unused4-61 = scalar, U08, 61, "RPM", 100.0, 0.0, 100, 25500, 0
unused4-62 = scalar, U08, 62, "RPM", 100.0, 0.0, 100, 25500, 0
;Decelleration Fuel Cut Off (DFCO)
dfcoRPM = scalar, U08, 60, "RPM", 10.0, 0.0, 100, 2550, 0
dfcoHyster = scalar, U08, 61, "RPM", 1.0, 0.0, 100, 255.0, 0
dfcoTPSThresh= scalar, U08, 62, "%", 1.0, 0.0, 100, 100.0, 0
unused4-63 = scalar, U08, 63, "RPM", 100.0, 0.0, 100, 25500, 0
@ -579,12 +581,18 @@ page = 8
panel = engine_constants_south, South
dialog = accelEnrichments_south, ""
dialog = accelEnrichments_center, ""
field = "TPSdot Threshold", tpsThresh
field = "Accel Time", taeTime
; field = "Cold Accel Enrichment", taeColdA
; field = "Cold Accel Mult", taeColdM
field = "Decel Fuel Amount", tdePct
dialog = accelEnrichments_south, "Decelleration Fuel Cutoff (DFCO)"
field = "Enabled", dfcoEnabled
field = "TPS Threshold", dfcoTPSThresh, { dfcoEnabled }
field = "Cutoff RPM", dfcoRPM, { dfcoEnabled }
field = "RPM Hysteresis", dfcoHyster, { dfcoEnabled }
dialog = accelEnrichments_north, "", xAxis
panel = time_accel_tpsdot_curve
@ -592,6 +600,7 @@ page = 8
dialog = accelEnrichments, "Acceleration Enrichment"
panel = accelEnrichments_north, North
panel = accelEnrichments_center, Center
panel = accelEnrichments_south, South
dialog = injChars, "Injector Characteristics"