mirror of https://github.com/rusefi/rusefi.git
478 lines
14 KiB
C++
478 lines
14 KiB
C++
/**
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* @file engine_math.cpp
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* @brief
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*
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* @date Jul 13, 2013
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* @author Andrey Belomutskiy, (c) 2012-2020
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*
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* This file is part of rusEfi - see http://rusefi.com
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*
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* rusEfi is free software; you can redistribute it and/or modify it under the terms of
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* the GNU General Public License as published by the Free Software Foundation; either
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* version 3 of the License, or (at your option) any later version.
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*
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* rusEfi is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
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* even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with this program.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "pch.h"
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#include "event_registry.h"
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#include "fuel_math.h"
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#include "advance_map.h"
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#include "gppwm_channel.h"
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#if EFI_UNIT_TEST
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extern bool verboseMode;
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#endif /* EFI_UNIT_TEST */
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floatms_t getEngineCycleDuration(int rpm) {
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return getCrankshaftRevolutionTimeMs(rpm) * (getEngineRotationState()->getOperationMode() == TWO_STROKE ? 1 : 2);
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}
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/**
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* @return number of milliseconds in one crank shaft revolution
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*/
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floatms_t getCrankshaftRevolutionTimeMs(int rpm) {
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if (rpm == 0) {
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return NAN;
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}
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return 360 * getOneDegreeTimeMs(rpm);
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}
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float getFuelingLoad() {
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return getEngineState()->fuelingLoad;
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}
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float getIgnitionLoad() {
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return getEngineState()->ignitionLoad;
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}
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/**
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* see also setConstantDwell
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*/
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void setSingleCoilDwell() {
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for (int i = 0; i < DWELL_CURVE_SIZE; i++) {
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config->sparkDwellRpmBins[i] = (i + 1) * 50;
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config->sparkDwellValues[i] = 4;
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}
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config->sparkDwellRpmBins[5] = 500;
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config->sparkDwellValues[5] = 4;
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config->sparkDwellRpmBins[6] = 4500;
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config->sparkDwellValues[6] = 4;
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config->sparkDwellRpmBins[7] = 12500;
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config->sparkDwellValues[7] = 0;
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}
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/**
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* @return Spark dwell time, in milliseconds. 0 if tables are not ready.
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*/
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floatms_t IgnitionState::getSparkDwell(int rpm) {
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#if EFI_ENGINE_CONTROL && EFI_SHAFT_POSITION_INPUT
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float dwellMs;
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if (engine->rpmCalculator.isCranking()) {
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dwellMs = engineConfiguration->ignitionDwellForCrankingMs;
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} else {
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efiAssert(ObdCode::CUSTOM_ERR_ASSERT, !cisnan(rpm), "invalid rpm", NAN);
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baseDwell = interpolate2d(rpm, config->sparkDwellRpmBins, config->sparkDwellValues);
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dwellVoltageCorrection = interpolate2d(
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Sensor::getOrZero(SensorType::BatteryVoltage),
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config->dwellVoltageCorrVoltBins,
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config->dwellVoltageCorrValues
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);
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// for compat (table full of zeroes)
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if (dwellVoltageCorrection < 0.1f) {
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dwellVoltageCorrection = 1;
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}
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dwellMs = baseDwell * dwellVoltageCorrection;
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}
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if (cisnan(dwellMs) || dwellMs <= 0) {
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// this could happen during engine configuration reset
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warning(ObdCode::CUSTOM_ERR_DWELL_DURATION, "invalid dwell: %.2f at rpm=%d", dwellMs, rpm);
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return 0;
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}
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return dwellMs;
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#else
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return 0;
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#endif
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}
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static const uint8_t order_1[] = {1};
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static const uint8_t order_1_2[] = {1, 2};
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static const uint8_t order_1_2_3[] = {1, 2, 3};
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static const uint8_t order_1_3_2[] = {1, 3, 2};
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// 4 cylinder
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static const uint8_t order_1_THEN_3_THEN_4_THEN2[] = { 1, 3, 4, 2 };
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static const uint8_t order_1_THEN_2_THEN_4_THEN3[] = { 1, 2, 4, 3 };
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static const uint8_t order_1_THEN_3_THEN_2_THEN4[] = { 1, 3, 2, 4 };
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static const uint8_t order_1_THEN_4_THEN_3_THEN2[] = { 1, 4, 3, 2 };
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// 5 cylinder
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static const uint8_t order_1_2_4_5_3[] = {1, 2, 4, 5, 3};
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// 6 cylinder
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static const uint8_t order_1_THEN_5_THEN_3_THEN_6_THEN_2_THEN_4[] = { 1, 5, 3, 6, 2, 4 };
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static const uint8_t order_1_THEN_4_THEN_2_THEN_5_THEN_3_THEN_6[] = { 1, 4, 2, 5, 3, 6 };
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static const uint8_t order_1_THEN_2_THEN_3_THEN_4_THEN_5_THEN_6[] = { 1, 2, 3, 4, 5, 6 };
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static const uint8_t order_1_6_3_2_5_4[] = {1, 6, 3, 2, 5, 4};
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static const uint8_t order_1_4_3_6_2_5[] = {1, 4, 3, 6, 2, 5};
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static const uint8_t order_1_6_2_4_3_5[] = {1, 6, 2, 4, 3, 5};
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static const uint8_t order_1_6_5_4_3_2[] = {1, 6, 5, 4, 3, 2};
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static const uint8_t order_1_4_5_2_3_6[] = {1, 4, 5, 2, 3, 6};
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// 8 cylinder
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static const uint8_t order_1_8_4_3_6_5_7_2[] = { 1, 8, 4, 3, 6, 5, 7, 2 };
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static const uint8_t order_1_8_7_2_6_5_4_3[] = { 1, 8, 7, 2, 6, 5, 4, 3 };
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static const uint8_t order_1_5_4_2_6_3_7_8[] = { 1, 5, 4, 2, 6, 3, 7, 8 };
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static const uint8_t order_1_2_7_8_4_5_6_3[] = { 1, 2, 7, 8, 4, 5, 6, 3 };
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static const uint8_t order_1_3_7_2_6_5_4_8[] = { 1, 3, 7, 2, 6, 5, 4, 8 };
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static const uint8_t order_1_2_3_4_5_6_7_8[] = { 1, 2, 3, 4, 5, 6, 7, 8 };
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static const uint8_t order_1_5_4_8_6_3_7_2[] = { 1, 5, 4, 8, 6, 3, 7, 2 };
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static const uint8_t order_1_8_7_3_6_5_4_2[] = { 1, 8, 7, 3, 6, 5, 4, 2 };
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static const uint8_t order_1_5_4_8_3_7_2_6[] = { 1, 5, 4, 8, 3, 7, 2, 6 };
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// 9 cylinder
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static const uint8_t order_1_2_3_4_5_6_7_8_9[] = { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
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// 10 cylinder
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static const uint8_t order_1_10_9_4_3_6_5_8_7_2[] = {1, 10, 9, 4, 3, 6, 5, 8, 7, 2};
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// 12 cyliner
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static const uint8_t order_1_7_5_11_3_9_6_12_2_8_4_10[] = {1, 7, 5, 11, 3, 9, 6, 12, 2, 8, 4, 10};
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static const uint8_t order_1_7_4_10_2_8_6_12_3_9_5_11[] = {1, 7, 4, 10, 2, 8, 6, 12, 3, 9, 5, 11};
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static const uint8_t order_1_12_5_8_3_10_6_7_2_11_4_9[] = {1, 12, 5, 8, 3, 10, 6, 7, 2, 11, 4, 9};
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static const uint8_t order_1_2_3_4_5_6_7_8_9_10_11_12[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12};
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// no comments
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static const uint8_t order_1_14_9_4_7_12_15_6_13_8_3_16_11_2_5_10[] = {1, 14, 9, 4, 7, 12, 15, 6, 13, 8, 3, 16, 11, 2, 5, 10};
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static size_t getFiringOrderLength() {
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switch (engineConfiguration->firingOrder) {
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case FO_1:
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return 1;
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// 2 cylinder
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case FO_1_2:
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return 2;
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// 3 cylinder
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case FO_1_2_3:
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case FO_1_3_2:
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return 3;
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// 4 cylinder
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case FO_1_3_4_2:
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case FO_1_2_4_3:
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case FO_1_3_2_4:
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case FO_1_4_3_2:
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return 4;
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// 5 cylinder
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case FO_1_2_4_5_3:
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return 5;
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// 6 cylinder
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case FO_1_5_3_6_2_4:
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case FO_1_4_2_5_3_6:
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case FO_1_2_3_4_5_6:
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case FO_1_6_3_2_5_4:
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case FO_1_4_3_6_2_5:
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case FO_1_6_2_4_3_5:
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case FO_1_6_5_4_3_2:
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case FO_1_4_5_2_3_6:
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return 6;
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// 8 cylinder
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case FO_1_8_4_3_6_5_7_2:
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case FO_1_8_7_2_6_5_4_3:
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case FO_1_5_4_2_6_3_7_8:
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case FO_1_2_7_8_4_5_6_3:
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case FO_1_3_7_2_6_5_4_8:
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case FO_1_2_3_4_5_6_7_8:
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case FO_1_5_4_8_6_3_7_2:
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case FO_1_8_7_3_6_5_4_2:
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case FO_1_5_4_8_3_7_2_6:
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return 8;
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// 9 cylinder radial
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case FO_1_2_3_4_5_6_7_8_9:
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return 9;
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// 10 cylinder
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case FO_1_10_9_4_3_6_5_8_7_2:
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return 10;
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// 12 cylinder
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case FO_1_7_5_11_3_9_6_12_2_8_4_10:
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case FO_1_7_4_10_2_8_6_12_3_9_5_11:
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case FO_1_12_5_8_3_10_6_7_2_11_4_9:
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case FO_1_2_3_4_5_6_7_8_9_10_11_12:
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return 12;
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case FO_1_14_9_4_7_12_15_6_13_8_3_16_11_2_5_10:
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return 16;
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default:
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firmwareError(ObdCode::CUSTOM_OBD_UNKNOWN_FIRING_ORDER, "Invalid firing order: %d", engineConfiguration->firingOrder);
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}
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return 1;
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}
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static const uint8_t* getFiringOrderTable() {
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switch (engineConfiguration->firingOrder) {
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case FO_1:
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return order_1;
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// 2 cylinder
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case FO_1_2:
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return order_1_2;
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// 3 cylinder
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case FO_1_2_3:
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return order_1_2_3;
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case FO_1_3_2:
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return order_1_3_2;
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// 4 cylinder
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case FO_1_3_4_2:
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return order_1_THEN_3_THEN_4_THEN2;
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case FO_1_2_4_3:
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return order_1_THEN_2_THEN_4_THEN3;
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case FO_1_3_2_4:
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return order_1_THEN_3_THEN_2_THEN4;
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case FO_1_4_3_2:
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return order_1_THEN_4_THEN_3_THEN2;
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// 5 cylinder
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case FO_1_2_4_5_3:
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return order_1_2_4_5_3;
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// 6 cylinder
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case FO_1_5_3_6_2_4:
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return order_1_THEN_5_THEN_3_THEN_6_THEN_2_THEN_4;
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case FO_1_4_2_5_3_6:
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return order_1_THEN_4_THEN_2_THEN_5_THEN_3_THEN_6;
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case FO_1_2_3_4_5_6:
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return order_1_THEN_2_THEN_3_THEN_4_THEN_5_THEN_6;
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case FO_1_6_3_2_5_4:
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return order_1_6_3_2_5_4;
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case FO_1_4_3_6_2_5:
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return order_1_4_3_6_2_5;
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case FO_1_6_2_4_3_5:
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return order_1_6_2_4_3_5;
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case FO_1_6_5_4_3_2:
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return order_1_6_5_4_3_2;
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case FO_1_4_5_2_3_6:
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return order_1_4_5_2_3_6;
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// 8 cylinder
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case FO_1_8_4_3_6_5_7_2:
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return order_1_8_4_3_6_5_7_2;
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case FO_1_8_7_2_6_5_4_3:
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return order_1_8_7_2_6_5_4_3;
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case FO_1_5_4_2_6_3_7_8:
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return order_1_5_4_2_6_3_7_8;
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case FO_1_2_7_8_4_5_6_3:
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return order_1_2_7_8_4_5_6_3;
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case FO_1_3_7_2_6_5_4_8:
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return order_1_3_7_2_6_5_4_8;
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case FO_1_2_3_4_5_6_7_8:
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return order_1_2_3_4_5_6_7_8;
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case FO_1_5_4_8_6_3_7_2:
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return order_1_5_4_8_6_3_7_2;
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case FO_1_8_7_3_6_5_4_2:
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return order_1_8_7_3_6_5_4_2;
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case FO_1_5_4_8_3_7_2_6:
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return order_1_5_4_8_3_7_2_6;
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// 9 cylinder
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case FO_1_2_3_4_5_6_7_8_9:
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return order_1_2_3_4_5_6_7_8_9;
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// 10 cylinder
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case FO_1_10_9_4_3_6_5_8_7_2:
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return order_1_10_9_4_3_6_5_8_7_2;
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// 12 cylinder
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case FO_1_7_5_11_3_9_6_12_2_8_4_10:
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return order_1_7_5_11_3_9_6_12_2_8_4_10;
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case FO_1_7_4_10_2_8_6_12_3_9_5_11:
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return order_1_7_4_10_2_8_6_12_3_9_5_11;
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case FO_1_12_5_8_3_10_6_7_2_11_4_9:
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return order_1_12_5_8_3_10_6_7_2_11_4_9;
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case FO_1_2_3_4_5_6_7_8_9_10_11_12:
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return order_1_2_3_4_5_6_7_8_9_10_11_12;
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// do not ask
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case FO_1_14_9_4_7_12_15_6_13_8_3_16_11_2_5_10:
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return order_1_14_9_4_7_12_15_6_13_8_3_16_11_2_5_10;
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default:
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firmwareError(ObdCode::CUSTOM_OBD_UNKNOWN_FIRING_ORDER, "Invalid firing order: %d", engineConfiguration->firingOrder);
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}
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return NULL;
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}
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/**
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* @param index from zero to cylindersCount - 1
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* @return cylinderId from one to cylindersCount
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*/
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size_t getFiringOrderCylinderId(size_t index) {
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const size_t firingOrderLength = getFiringOrderLength();
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if (firingOrderLength < 1 || firingOrderLength > MAX_CYLINDER_COUNT) {
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firmwareError(ObdCode::CUSTOM_FIRING_LENGTH, "fol %d", firingOrderLength);
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return 1;
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}
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if (engineConfiguration->cylindersCount != firingOrderLength) {
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// May 2020 this somehow still happens with functional tests, maybe race condition?
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firmwareError(ObdCode::CUSTOM_OBD_WRONG_FIRING_ORDER, "Wrong cyl count for firing order, expected %d cylinders", firingOrderLength);
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return 1;
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}
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if (index >= firingOrderLength) {
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// May 2020 this somehow still happens with functional tests, maybe race condition?
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warning(ObdCode::CUSTOM_ERR_6686, "firing order index %d", index);
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return 1;
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}
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if (auto firingOrderTable = getFiringOrderTable()) {
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return firingOrderTable[index];
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} else {
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// error already reported
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return 1;
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}
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}
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/**
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* @param prevCylinderId from one to cylindersCount
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* @return cylinderId from one to cylindersCount
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*/
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size_t getNextFiringCylinderId(size_t prevCylinderId) {
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const size_t firingOrderLength = getFiringOrderLength();
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auto firingOrderTable = getFiringOrderTable();
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if (firingOrderTable) {
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for (size_t i = 0; i < firingOrderLength; i++) {
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if (firingOrderTable[i] == prevCylinderId) {
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return firingOrderTable[(i + 1) % firingOrderLength];
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}
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}
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}
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return 1;
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}
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/**
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* @return IM_WASTED_SPARK if in SPINNING mode and IM_INDIVIDUAL_COILS setting
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* @return engineConfiguration->ignitionMode otherwise
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*/
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ignition_mode_e getCurrentIgnitionMode() {
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ignition_mode_e ignitionMode = engineConfiguration->ignitionMode;
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#if EFI_SHAFT_POSITION_INPUT
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// In spin-up cranking mode we don't have full phase sync info yet, so wasted spark mode is better
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// However, only do this on even cylinder count engines: odd cyl count doesn't fire at all
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if (ignitionMode == IM_INDIVIDUAL_COILS && (engineConfiguration->cylindersCount % 2 == 0)) {
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bool missingPhaseInfoForSequential =
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!engine->triggerCentral.triggerState.hasSynchronizedPhase();
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if (!engineConfiguration->oddFireEngine && (engine->rpmCalculator.isSpinningUp() || missingPhaseInfoForSequential)) {
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ignitionMode = IM_WASTED_SPARK;
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}
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}
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#endif /* EFI_SHAFT_POSITION_INPUT */
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return ignitionMode;
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}
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#if EFI_ENGINE_CONTROL
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/**
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* This heavy method is only invoked in case of a configuration change or initialization.
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*/
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void prepareOutputSignals() {
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getEngineState()->engineCycle = getEngineCycle(getEngineRotationState()->getOperationMode());
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#if EFI_UNIT_TEST
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if (verboseMode) {
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printf("prepareOutputSignals %d %s\r\n", engineConfiguration->trigger.type, getIgnition_mode_e(engineConfiguration->ignitionMode));
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|
}
|
|
#endif /* EFI_UNIT_TEST */
|
|
|
|
#if EFI_SHAFT_POSITION_INPUT
|
|
engine->triggerCentral.prepareTriggerShape();
|
|
#endif // EFI_SHAFT_POSITION_INPUT
|
|
|
|
// Fuel schedule may now be completely wrong, force a reset
|
|
engine->injectionEvents.invalidate();
|
|
}
|
|
|
|
angle_t getPerCylinderFiringOrderOffset(uint8_t cylinderIndex, uint8_t cylinderNumber) {
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|
// base = position of this cylinder in the firing order.
|
|
// We get a cylinder every n-th of an engine cycle where N is the number of cylinders
|
|
auto firingOrderOffset = engine->engineState.engineCycle * cylinderIndex / engineConfiguration->cylindersCount;
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|
|
|
// Plus or minus any adjustment if this is an odd-fire engine
|
|
auto adjustment = engineConfiguration->timing_offset_cylinder[cylinderNumber];
|
|
|
|
auto result = firingOrderOffset + adjustment;
|
|
|
|
assertAngleRange(result, "getCylinderAngle", ObdCode::CUSTOM_ERR_CYL_ANGLE);
|
|
|
|
return result;
|
|
}
|
|
|
|
void setTimingRpmBin(float from, float to) {
|
|
setRpmBin(config->ignitionRpmBins, IGN_RPM_COUNT, from, to);
|
|
}
|
|
|
|
/**
|
|
* this method sets algorithm and ignition table scale
|
|
*/
|
|
void setAlgorithm(engine_load_mode_e algo) {
|
|
engineConfiguration->fuelAlgorithm = algo;
|
|
}
|
|
|
|
void setFlatInjectorLag(float value) {
|
|
setArrayValues(engineConfiguration->injector.battLagCorr, value);
|
|
}
|
|
|
|
BlendResult calculateBlend(blend_table_s& cfg, float rpm, float load) {
|
|
// If set to 0, skip the math as its disabled
|
|
if (cfg.blendParameter == GPPWM_Zero) {
|
|
return { 0, 0, 0 };
|
|
}
|
|
|
|
auto value = readGppwmChannel(cfg.blendParameter);
|
|
|
|
if (!value) {
|
|
return { 0, 0, 0 };
|
|
}
|
|
|
|
// Override Y axis value (if necessary)
|
|
if (cfg.yAxisOverride != GPPWM_Zero) {
|
|
// TODO: is this value_or(0) correct or even reasonable?
|
|
load = readGppwmChannel(cfg.yAxisOverride).value_or(0);
|
|
}
|
|
|
|
float tableValue = interpolate3d(
|
|
cfg.table,
|
|
cfg.loadBins, load,
|
|
cfg.rpmBins, rpm
|
|
);
|
|
|
|
float blendFactor = interpolate2d(value.Value, cfg.blendBins, cfg.blendValues);
|
|
|
|
return { value.Value, blendFactor, 0.01f * blendFactor * tableValue };
|
|
}
|
|
|
|
#endif /* EFI_ENGINE_CONTROL */
|