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speeduino
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Injector timing math tweaks

This commit is contained in:
Josh Stewart 2014-06-30 00:32:22 +10:00
parent 0943415f8a
commit 82d6ede7b8
1 changed files with 4 additions and 3 deletions
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7
speeduino.ino
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@ -296,7 +296,7 @@ void loop()
{
//Alpha-N
currentStatus.VE = get3DTableValue(fuelTable, currentStatus.TPS, currentStatus.RPM); //Perform lookup into fuel map for RPM vs TPS value
currentStatus.PW = PW_AN(req_fuel_uS, currentStatus.VE, currentStatus.TPS, corrections, engineInjectorDeadTime); //The 100 here is just a placeholder for any enrichment factors (Cold start, acceleration etc). To add 10% extra fuel, this would be 110
currentStatus.PW = PW_AN(req_fuel_uS, currentStatus.VE, currentStatus.TPS, corrections, engineInjectorDeadTime); //Calculate pulsewidth using the Alpha-N algorithm
currentStatus.advance = get3DTableValue(ignitionTable, currentStatus.TPS, currentStatus.RPM); //As above, but for ignition advance
}
@ -315,8 +315,9 @@ void loop()
if (crankAngle > 360) { crankAngle -= 360; }
//How fast are we going? Need to know how long (uS) it will take to get from one tooth to the next. We then use that to estimate how far we are between the last tooth and the next one
unsigned long timePerDegree = div( (toothOneTime - toothOneMinusOneTime), (triggerToothAngle * configPage2.triggerTeeth)).quot; //The time (uS) it is currently taking to move 1 degree (fastDivide version)
crankAngle += div( (micros() - toothLastToothTime), timePerDegree).quot; //Estimate the number of degrees travelled since the last tooth
//unsigned long timePerDegree = div( (toothOneTime - toothOneMinusOneTime), (triggerToothAngle * configPage2.triggerTeeth)).quot; //The time (uS) it is currently taking to move 1 degree
int timePerDegree = div( abs((int)(toothOneTime - toothOneMinusOneTime)), 360).quot; //The time (uS) it is currently taking to move 1 degree
crankAngle += div( (int)(micros() - toothLastToothTime), timePerDegree).quot; //Estimate the number of degrees travelled since the last tooth
//Determine next firing angles
//1