/// <summary>
/// Consturctor of FuelTripCalculator.
/// </summary>
/// <param name="option">Calculation option.</param>
/// <param name="calculationMethod">Calclation method</param>
public FuelTripCalculator(FuelTripCalculatorOption option, FuelCalculationMethod calculationMethod)
{
this.calculatorOption = option;
this.calculationMethod = calculationMethod;
totalTripFuel = new TripFuelContent();
sectElapsed = 0;
sectStoreMax = 60;
sectSpan = 60 * 1000;
sectTripFuelTemporary = new TripFuelContent();
sectTripFuelQueue = new Queue <TripFuelContent>();
sectTripFuelLatest = new TripFuelContent();
saveElapsedTime = 0;
//Set data folder and file path.
folderPath = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
filePath = Path.Combine(folderPath, "." + "FUELTRIP_Logger");
loadTripFuel();
stopWatch = new Stopwatch();
stopWatch.Reset();
}
/// <summary>
/// Calculate fuel consumption by mass air flow.
/// </summary>
/// <param name="elapsedMillisecond">Elapsed time</param>
/// <param name="massAirFlow">Mass air flow</param>
/// <param name="calculatorOption">Calculator option<</param>
/// <returns></returns>
public static double FuelCalcByMassAir(double elapsedMillisecond, double massAirFlow, FuelTripCalculatorOption calculatorOption)
{
return(FuelCalcByAFAndMassAir(elapsedMillisecond, massAirFlow, DefaultAFRatio, calculatorOption));
}
/// <summary>
/// Calulate fuel consumption by mass air flow and AF ratio.
/// </summary>
/// <param name="elapsedMillisecond">Elapsed time</param>
/// <param name="massAirFlow">Mass air flow (g/s)</param>
/// <param name="AFRatio">AF ratio(lambda, Set 1 on stoichiometric mixture(Gas(gram):Air(gram)=14.7:1))</param>
/// <param name="calculatorOption">Calculator option</param>
/// <returns></returns>
public static double FuelCalcByAFAndMassAir(double elapsedMillisecond, double massAirFlow, double AFRatio, FuelTripCalculatorOption calculatorOption)
{
double GasConsumptionCoefficient = calculatorOption.FuelCorrectionFactor;
double momentaryFuelConsumption = massAirFlow / (AFRatio * 14.7) / DensityOfFuel / 1000;
return(momentaryFuelConsumption * GasConsumptionCoefficient * elapsedMillisecond / 1000);
}
/// <summary>
/// Calculate and return momentary fuel consumption by rev and injection pulse width method.
/// </summary>
/// <param name="elaspedMillisecond">Elapsed time in millisecond.</param>
/// <param name="engineRev">Engine rpm.</param>
/// <param name="injetctioPulseWidth">Injection pulse width</param>
/// <param name="calculatorOption">Calculator option</param>
/// <returns></returns>
public static double FuelCalcByRevInjPW(double elaspedMillisecond, double engineRev, double injectionPulseWidth, FuelTripCalculatorOption calculatorOption)
{
double GasConsumptionCoefficient = calculatorOption.FuelCorrectionFactor;
int NumCylinder = calculatorOption.NumCylinder;
double InjectorCapacity = calculatorOption.InjectorCapacity;
double InjectionLatency = calculatorOption.InjectionLatency;
double momentaryFuelConsumption;
if (engineRev > 500) //Calculate fuel consumption only if the rev is over idling rev.
{
momentaryFuelConsumption = GasConsumptionCoefficient * (double)NumCylinder * (double)engineRev * InjectorCapacity * (injectionPulseWidth - InjectionLatency) / (7.2E9) * elaspedMillisecond / 1000;
}
else
{
momentaryFuelConsumption = 0;
}
//If the calculated momentary fuel consumption is negative, override by zero.
if (momentaryFuelConsumption < 0)
{
momentaryFuelConsumption = 0;
}
return(momentaryFuelConsumption);
}
private double getMomentaryTrip(long elasped_millisecond, double currentVehicleSpeed, FuelTripCalculatorOption calculatorOption)
{
double TripCoefficient = calculatorOption.TripCorrectionFactor;
double monentary_trip = TripCoefficient * (currentVehicleSpeed) / 3600 / 1000 * elasped_millisecond;
return(monentary_trip);
}
