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adjust mr18 vvt trigger (#3691) 

* adjust mr18 trigger

* second gap, why not
This commit is contained in:
Matthew Kennedy 2021-12-13 12:33:34 -08:00 committed by GitHub
parent 5fdf9e420f
commit 7e3765650f
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 10 additions and 6 deletions
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16
firmware/controllers/trigger/decoders/trigger_nissan.cpp
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@ -157,7 +157,7 @@ void initializeNissanVQ35crank(TriggerWaveform *s) {
void initializeNissanMR18crank(TriggerWaveform *s) {
s->initialize(FOUR_STROKE_SYMMETRICAL_CRANK_SENSOR);
s->tdcPosition = 640;
s->tdcPosition = 80;
// 4 cylinder = 36 tooth wheel, missing 2 teeth in 2 spots
makeNissanPattern(s, 2, 36, 2);
@ -226,16 +226,16 @@ void initializeNissanMRvvt(TriggerWaveform *s) {
s->initialize(FOUR_STROKE_CAM_SENSOR);
s->tdcPosition = 0;
int x = 74;
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 16 cam degrees apart
int toothSpacing = 16;
// Teeth within a group are spaced 17 cam degrees apart
int toothSpacing = 17;
// "1"
addvq30tooth(s, x + 0);
addvq30tooth(s, x + 0); // <-- sync point here
// "3"
addvq30tooth(s, x + 90 + 0 * toothSpacing);
@ -252,5 +252,9 @@ void initializeNissanMRvvt(TriggerWaveform *s) {
addvq30tooth(s, x + 270 + 0 * toothSpacing);
addvq30tooth(s, x + 270 + 1 * toothSpacing);
s->setTriggerSynchronizationGap(5.4);
// nominal gap 4.31
s->setTriggerSynchronizationGap2(3.8, 5);
// nominal gap 0.44
s->setSecondTriggerSynchronizationGap2(0.3, 0.55);
}