trigger_nissan.cpp

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/**
 * @file    trigger_nissan.cpp
 *
 * https://rusefi.com/forum/viewtopic.php?f=3&t=1194&start=150#p27784
 *
 * @date Sep 19, 2015
 * @author Andrey Belomutskiy, (c) 2012-2020
 */
 
#include "pch.h"
 
#include "trigger_nissan.h"
#include "trigger_universal.h"
#include "trigger_subaru.h"
 
/**
 * 8,2,2,2 Nissan pattern
 */
void initializeNissanSR20VE_4(TriggerWaveform *s) {
    s->initialize(FOUR_STROKE_CAM_SENSOR, SyncEdge::Both);
 
    s->tdcPosition = 630;
 
    s->setTriggerSynchronizationGap2(9.67 * 0.75, 16);
 
    float width = 4;
 
    s->addEvent720(1 * 180 - 4 * width, TriggerValue::RISE);
    s->addEvent720(1 * 180, TriggerValue::FALL);
 
    s->addEvent720(2 * 180 - width, TriggerValue::RISE);
    s->addEvent720(2 * 180, TriggerValue::FALL);
 
    s->addEvent720(3 * 180 - width, TriggerValue::RISE);
    s->addEvent720(3 * 180, TriggerValue::FALL);
 
    s->addEvent720(4 * 180 - width, TriggerValue::RISE);
    s->addEvent720(4 * 180, TriggerValue::FALL);
}
 
void initializeNissanVQvvt(TriggerWaveform *s) {
    s->initialize(FOUR_STROKE_CAM_SENSOR, SyncEdge::RiseOnly);
 
    int offset = 360 - 260;
 
    s->addToothRiseFall(offset + 20);
    s->addToothRiseFall(offset + 80);
    s->addToothRiseFall(offset + 100);
    s->addToothRiseFall(offset + 140);
    s->addToothRiseFall(offset + 160);
    s->addToothRiseFall(offset + 260);
 
    s->setTriggerSynchronizationGap2(4, 6);
    s->setSecondTriggerSynchronizationGap2(0.35f, 0.7f);
}
 
void makeNissanPattern(TriggerWaveform* s, size_t halfCylinderCount, size_t totalWheel, size_t missing) {
 
    auto toothAngle = 360.0f / totalWheel;
 
    auto patternTeeth = totalWheel / halfCylinderCount;
    auto toothCount = patternTeeth - missing;
 
    float currentAngle = missing * toothAngle;
    for (size_t i = 0; i < toothCount; i++) {
        currentAngle += toothAngle;
        s->addEventAngle(currentAngle - 5, TriggerValue::RISE);
        s->addEventAngle(currentAngle, TriggerValue::FALL);
    }
}
 
void initializeNissanVQ35crank(TriggerWaveform *s) {
    s->initialize(FOUR_STROKE_THREE_TIMES_CRANK_SENSOR, SyncEdge::RiseOnly);
 
    s->tdcPosition = 675;
 
    // 6 cylinder = 36 tooth wheel, missing 2 teeth in 3 spots
    makeNissanPattern(s, 3, 36, 2);
    s->setTriggerSynchronizationGap3(/*gapIndex*/0, 0.2, 0.5);
    s->setTriggerSynchronizationGap3(/*gapIndex*/1, 2, 4);
    s->setTriggerSynchronizationGap3(/*gapIndex*/2, 0.6, 1.4);
}
 
void initializeNissanMR18crank(TriggerWaveform *s) {
    s->initialize(FOUR_STROKE_SYMMETRICAL_CRANK_SENSOR, SyncEdge::RiseOnly);
 
    s->tdcPosition = 80;
 
    // 4 cylinder = 36 tooth wheel, missing 2 teeth in 2 spots
    makeNissanPattern(s, 2, 36, 2);
    s->setTriggerSynchronizationGap(0.33);
}
 
void initializeNissanQR25crank(TriggerWaveform *s) {
    s->initialize(FOUR_STROKE_SYMMETRICAL_CRANK_SENSOR, SyncEdge::RiseOnly);
    s->setTriggerSynchronizationGap(0.33);
    s->setSecondTriggerSynchronizationGap(3);
 
    s->tdcPosition = 585;
 
    float currentAngle = 20;
    for (int i = 0;i < 16;i++) {
        currentAngle += 10;
        s->addEventAngle(currentAngle - 5, TriggerValue::RISE);
        s->addEventAngle(currentAngle, TriggerValue::FALL);
    }
}
 
static void addvq30tooth(TriggerWaveform *s, float angle) {
    s->addEvent360(angle - 4, TriggerValue::RISE);
    s->addEvent360(angle, TriggerValue::FALL);
}
 
// yes, this is CAM shaft shape NOT crank shaft shape!
// we will add crank shape once Pavel makes progress
void initializeNissanVQ30cam(TriggerWaveform *s) {
    s->initialize(FOUR_STROKE_CAM_SENSOR, SyncEdge::RiseOnly);
 
    s->tdcPosition = 120;
 
    int x = 360 + 52;
 
    addvq30tooth(s, x - (360 - 9 * 0));
    addvq30tooth(s, x - (360 - 9 * 1));
    addvq30tooth(s, x - (360 - 9 * 2));
 
    addvq30tooth(s, x - (252 + 9 * 5));
    addvq30tooth(s, x - (252 + 9 * 4));
    addvq30tooth(s, x - (252 + 9 * 3));
    addvq30tooth(s, x - (252 + 9 * 2));
    addvq30tooth(s, x - (252 + 9 * 1));
    addvq30tooth(s, x - (252 + 9 * 0));
 
    addvq30tooth(s, x - (236        ));
 
    addvq30tooth(s, x - (152 + 9 * 3));
    addvq30tooth(s, x - (152 + 9 * 2));
    addvq30tooth(s, x - (152 + 9 * 1));
    addvq30tooth(s, x - (152 + 9 * 0));
 
    addvq30tooth(s, x - (85 + 9 * 4));
    addvq30tooth(s, x - (85 + 9 * 3));
    addvq30tooth(s, x - (85 + 9 * 2));
    addvq30tooth(s, x - (85 + 9 * 1));
    addvq30tooth(s, x - (85 + 9 * 0));
 
    addvq30tooth(s, x - (52 + 9 * 1));
    addvq30tooth(s, x - (52 + 9 * 0));
 
    s->setTriggerSynchronizationGap4(/*gapIndex*/0, 5.78);
    s->setTriggerSynchronizationGap4(/*gapIndex*/1, 0.38);
    s->setTriggerSynchronizationGap4(/*gapIndex*/2, 2.67);
}
 
void initializeNissanMRvvt(TriggerWaveform *s) {
    s->initialize(FOUR_STROKE_CAM_SENSOR, SyncEdge::RiseOnly);
    s->tdcPosition = 0;
 
    int x = 73;
 
    // All "groups" start every 90 degrees of cam rotation
    // The groups have 1, 3, 4, 2 teeth each (which is the firing order?)
 
    // Teeth within a group are spaced 17 cam degrees apart
    int toothSpacing = 17;
 
    // "1"
    addvq30tooth(s, x + 0); // <-- sync point here
 
    // "3"
    addvq30tooth(s, x + 90 + 0 * toothSpacing);
    addvq30tooth(s, x + 90 + 1 * toothSpacing);
    addvq30tooth(s, x + 90 + 2 * toothSpacing);
 
    // "4"
    addvq30tooth(s, x + 180 + 0 * toothSpacing);
    addvq30tooth(s, x + 180 + 1 * toothSpacing);
    addvq30tooth(s, x + 180 + 2 * toothSpacing);
    addvq30tooth(s, x + 180 + 3 * toothSpacing);
 
    // "2"
    addvq30tooth(s, x + 270 + 0 * toothSpacing);
    addvq30tooth(s, x + 270 + 1 * toothSpacing);
 
    // nominal gap 4.31
    s->setTriggerSynchronizationGap2(3.8, 5);
 
    // nominal gap 0.44
    s->setSecondTriggerSynchronizationGap2(0.3, 0.55);
}
 
void initialize_one_of_36_2_2(TriggerWaveform *s, int firstCount, int secondCount) {
    s->initialize(FOUR_STROKE_CRANK_SENSOR, SyncEdge::RiseOnly);
 
    float narrow = 360 / 36;
    float wide = narrow * 3;
 
    float base = 0;
 
    for (int i = 0; i < firstCount; i++) {
        s->addToothFallRise(base + narrow, narrow / 2);
        base += narrow;
    }
 
    s->addToothFallRise(base + wide, wide / 2);
    base += wide;
 
    for (int i = 0; i < secondCount; i++) {
        s->addToothFallRise(base + narrow, narrow / 2);
        base += narrow;
    }
 
       s->addToothFallRise(360, narrow/2);
}
 
void initializeNissanHRcrank(TriggerWaveform *s) {
    initialize_one_of_36_2_2(s, 9, 21);
 
    size_t count = 9;
 
    s->tdcPosition = 155 + 360;
 
 s->setTriggerSynchronizationGap3(/*gapIndex*/0, 1.7, 5);
  for (size_t i = 1 ; i < count ; i++) {
    s->setTriggerSynchronizationGap3(/*gapIndex*/i, 0.6, 1.5);
  }
  s->setTriggerSynchronizationGap3(/*gapIndex*/count, 0.1, 0.5);
  }
 
 
void initializeNissanHRvvtIn(TriggerWaveform *s) {
    s->initialize(FOUR_STROKE_CAM_SENSOR, SyncEdge::RiseOnly);
 
 
    s->addToothRiseFall(120);
    s->addToothRiseFall(120 + 22);
    s->addToothRiseFall(240);
    s->addToothRiseFall(360);
 
    s->setTriggerSynchronizationGap3(/*gapIndex*/0, 0.1, 0.3);
}