| Line | Branch | Decision | Exec | Source |
|---|---|---|---|---|
| 1 | /** | |||
| 2 | * @file speed_density_base.cpp | |||
| 3 | * | |||
| 4 | * Base for speed density (ie, ideal gas law) math shared by multiple fueling modes. | |||
| 5 | * | |||
| 6 | * @date July 22, 2020 | |||
| 7 | * @author Matthew Kennedy, (C) 2020 | |||
| 8 | */ | |||
| 9 | ||||
| 10 | #include "pch.h" | |||
| 11 | #include "speed_density_base.h" | |||
| 12 | ||||
| 13 | /** | |||
| 14 | * Derived via: | |||
| 15 | * (8.31 J K mol^-1) <- ideal gas constant R | |||
| 16 | * / | |||
| 17 | * (28.97g mol^-1) <- molar mass of air | |||
| 18 | * = 0.28705 J*K/g | |||
| 19 | */ | |||
| 20 | #define AIR_R 0.28705f | |||
| 21 | ||||
| 22 | 2221 | mass_t idealGasLaw(float volume, float pressure, float temperature) { | ||
| 23 | 2221 | return volume * pressure / (AIR_R * temperature); | ||
| 24 | } | |||
| 25 | ||||
| 26 | 1091 | /*static*/ mass_t SpeedDensityBase::getAirmassImpl(float ve, float manifoldPressure, float temperature) { | ||
| 27 | 1091 | mass_t cycleAir = ve * idealGasLaw(engineConfiguration->displacement, manifoldPressure, temperature); | ||
| 28 | 1091 | return cycleAir / engineConfiguration->cylindersCount; | ||
| 29 | } | |||
| 30 |