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GDI/HPFP: Don't take P term into account when clamping I. (#3732)
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@ -99,7 +99,10 @@ float HpfpQuantity::calcPI(int rpm, float calc_fuel_percent) {
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(FAST_CALLBACK_PERIOD_MS / // (% * revs * ms) / (kPa * min * cycles)
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i_factor_divisor); // % / kPa
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float i_control_percent = m_I_sum_percent + pressureError_kPa * i_factor;
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calc_fuel_percent += p_control_percent;
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// Clamp the output so that calc_fuel_percent+i_control_percent is within 0% to 100%
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// That way the I term can override any fuel calculations over the long term.
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// The P term is still allowed to drive the total output over 100% or under 0% to react to
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// short term errors.
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i_control_percent = clampF(-calc_fuel_percent, i_control_percent,
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100.f - calc_fuel_percent);
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m_I_sum_percent = i_control_percent;
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