optional after start fuel mutliplier table

firmware/CHANGELOG.md

@@ -45,6 +45,7 @@ or
  - Add two more aux linear sensors #476
  - Support wasted spark on odd cylinder count and odd-fire engines. Improves startup and allows running without a cam sensor!
  - Add an option for the DFCO MAP threshold to use a table dependent upon RPM #485 (thank you @alrijleh!)
+ - Ability to use an 8x8 table for after-start fuel multiplier that depends on CLT and engine run time
 
 ### Fixed
  - Improve performance with Lua CAN reception of a high volume of frames

firmware/controllers/algo/defaults/default_cranking.cpp

@@ -28,6 +28,9 @@ void setDefaultCranking() {
 
 	engineConfiguration->postCrankingDurationSec = 10;
 
+	copyArray(config->postCrankingEnrichTempBins, { -20, 0, 20, 40, 60, 80, 100, 120 });
+	copyArray(config->postCrankingEnrichRuntimeBins, { 0, 10, 20, 40, 60, 90, 120, 180 });
+
 	setLinearCurve(config->crankingTpsCoef, /*from*/1, /*to*/1, 1);
 	setLinearCurve(config->crankingTpsBins, 0, 100, 1);
 

firmware/controllers/algo/engine2.cpp

@@ -111,13 +111,23 @@ void EngineState::periodicFastCallback() {
 	engine->module<DfcoController>()->update();
 
 	// post-cranking fuel enrichment.
-	// for compatibility reasons, apply only if the factor is greater than unity (only allow adding fuel)
-	if (engineConfiguration->postCrankingFactor > 1.0f) {
-		// use interpolation for correction taper
-		engine->fuelComputer.running.postCrankingFuelCorrection = interpolateClamped(0.0f, engineConfiguration->postCrankingFactor,
-			engineConfiguration->postCrankingDurationSec, 1.0f, engine->fuelComputer.running.timeSinceCrankingInSecs);
+	if (engineConfiguration->postCrankingFuelUseTable) {
+		float postCrankingCorr = interpolate3d(
+				config->postCrankingEnrichTable,
+				config->postCrankingEnrichTempBins, Sensor::getOrZero(SensorType::Clt),
+				config->postCrankingEnrichRuntimeBins, engine->fuelComputer.running.timeSinceCrankingInSecs
+			);
+
+		engine->fuelComputer.running.postCrankingFuelCorrection = clampF(1, postCrankingCorr, 5);
 	} else {
-		engine->fuelComputer.running.postCrankingFuelCorrection = 1.0f;
+		// for compatibility reasons, apply only if the factor is greater than unity (only allow adding fuel)
+		if (engineConfiguration->postCrankingFactor > 1.0f) {
+			// use interpolation for correction taper
+			engine->fuelComputer.running.postCrankingFuelCorrection = interpolateClamped(0.0f, engineConfiguration->postCrankingFactor,
+				engineConfiguration->postCrankingDurationSec, 1.0f, engine->fuelComputer.running.timeSinceCrankingInSecs);
+		} else {
+			engine->fuelComputer.running.postCrankingFuelCorrection = 1.0f;
+		}
 	}
 
 	engine->ignitionState.cltTimingCorrection = getCltTimingCorrection();

firmware/integration/rusefi_config.txt

@@ -716,7 +716,7 @@ bit is_enabled_spi_2
 	bit alignEngineSnifferAtTDC
 	bit enableAemXSeries;AEM X-Series or rusEFI Wideband
 	bit useTableForDfcoMap,"Table","Fixed";Fixed: MAP threshold cut fuel when conditions are met\nTable: Use a curve to vary the MAP threshold based on engine RPM
-
+	bit postCrankingFuelUseTable,"Table","Basic"
 
 	brain_input_pin_e[LOGIC_ANALYZER_CHANNEL_COUNT iterate] logicAnalyzerPins;
 
@@ -1732,6 +1732,10 @@ uint8_t[8] autoscale minimumOilPressureValues;;"kPa", 10, 0, 0, 1000, 0
 uint8_t[DFCO_RPM_MAP_TABLE] autoscale dfcoMapRpmValuesBins;;"RPM", 100, 0, 0, 17500, 0
 uint8_t[DFCO_RPM_MAP_TABLE] autoscale dfcoMapRpmValues;DFCO will activate when operating below this curve. Used to allow a higher threshold at low RPM where less vaccuum is generated;"MAP", 1, 0, 0, 50, 0
 
+uint8_t[8 x 8] autoscale postCrankingEnrichTable;;"ratio", 0.02, 0, 1, 5, 2
+int8_t[8] autoscale postCrankingEnrichTempBins;;"deg C", 1, 0, -40, 120, 0
+uint8_t[8] postCrankingEnrichRuntimeBins;;"sec", 1, 0, 0, 180, 0 
+
 end_struct
 
 ! Pedal Position Sensor

firmware/tunerstudio/tunerstudio.template.ini

@@ -1234,6 +1234,12 @@ curve = 32Curve, "3-2 Shift Solenoid Percent by Speed"
 		yBins	= hpfpCompensationLoadBins, running_fuel
 		zBins	= hpfpCompensation
 
+	table = postCrankingEnrichmentTable, postCrankingEnrichmentTableId, "", 1
+		xBins = postCrankingEnrichRuntimeBins, running_timeSinceCrankingInSecs
+		yBins = postCrankingEnrichTempBins, coolant
+		zBins = postCrankingEnrichTable
+		xyLabels = "Run time", "CLT"
+
 
 [GaugeConfigurations]
 gaugeCategory = "Fuel: math"
@@ -1813,6 +1819,7 @@ menuDialog = main
 	menu = "&Cranking"
 		subMenu = crankingDialog,			"Cranking settings"
 		subMenu = postCrankingEnrichment,	"After-start enrichment"
+		subMenu = postCrankingEnrichmentTable, "After-start enrichment table", 0, {postCrankingFuelUseTable}
 		subMenu = primingFuelPulsePanel,	"Priming pulse"
 		subMenu = std_separator
 
@@ -3903,8 +3910,9 @@ cmd_set_engine_type_default					= "@@TS_IO_TEST_COMMAND_char@@@@ts_command_e_TS_
 		field = "Fixed Cranking Dwell",						ignitionDwellForCrankingMs
 
 	dialog = postCrankingEnrichment, "After start enrichment"
-		field = "Post-Cranking factor",				postCrankingFactor
-		field = "Duration",				postCrankingDurationSec
+		field = "After start enrichment mode",		postCrankingFuelUseTable
+		field = "Post-Cranking factor",				postCrankingFactor, {postCrankingFuelUseTable == 0}
+		field = "Duration",							postCrankingDurationSec, {postCrankingFuelUseTable == 0}
 
 	dialog = primingFuelPulsePanel, "Priming fuel pulse"
 		field = "Priming delay",	primingDelay