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Staged injection support; use two sets of injectors on the same engine #5247

This commit is contained in:
Andrey 2024-01-07 20:47:08 -05:00 committed by rusefillc
parent 1f64950e33
commit 81831abb97
1 changed files with 36 additions and 0 deletions
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36
firmware/controllers/algo/fuel_math.cpp
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@ -284,6 +284,12 @@ percent_t getInjectorDutyCycle(int rpm) {
return 100 * totalInjectiorAmountPerCycle / engineCycleDuration;
}
percent_t getInjectorDutyCycleStage2(int rpm) {
floatms_t totalInjectiorAmountPerCycle = engine->engineState.injectionDurationStage2 * getNumberOfInjections(engineConfiguration->injectionMode);
floatms_t engineCycleDuration = getEngineCycleDuration(rpm);
return 100 * totalInjectiorAmountPerCycle / engineCycleDuration;
}
static float getCycleFuelMass(bool isCranking, float baseFuelMass) {
if (isCranking) {
return getCrankingFuel(baseFuelMass);
@ -317,6 +323,10 @@ float getInjectionMass(int rpm) {
// Prepare injector flow rate & deadtime
engine->module<InjectorModelPrimary>()->prepare();
if (engineConfiguration->enableStagedInjection) {
engine->module<InjectorModelSecondary>()->prepare();
}
floatms_t tpsAccelEnrich = engine->tpsAccelEnrichment.getTpsEnrichment();
efiAssert(ObdCode::CUSTOM_ERR_ASSERT, !cisnan(tpsAccelEnrich), "NaN tpsAccelEnrich", 0);
engine->engineState.tpsAccelEnrich = tpsAccelEnrich;
@ -442,5 +452,31 @@ float getCylinderFuelTrim(size_t cylinderNumber, int rpm, float fuelLoad) {
return (100 + trimPercent) / 100;
}
static Hysteresis stage2Hysteresis;
float getStage2InjectionFraction(int rpm, float load) {
if (!engineConfiguration->enableStagedInjection) {
return 0;
}
float frac = 0.01f * interpolate3d(
config->injectorStagingTable,
config->injectorStagingLoadBins, load,
config->injectorStagingRpmBins, rpm
);
// don't allow very small fraction, with some hysteresis
if (!stage2Hysteresis.test(frac, 0.1, 0.03)) {
return 0;
}
// Clamp to 90%
if (frac > 0.9) {
frac = 0.9;
}
return frac;
}
#endif
#endif