This function creates a list of scaled functions of emission factors. A scaled emission factor which at a speed of the driving cycle (SDC) gives a desired value.

ef_ldv_scaled(df, dfcol, SDC = 34.12, v, t = "4S", cc, f, eu, p)

df Deprecated Column of the dataframe with the local emission factors eg df$dfcol Speed of the driving cycle Category vehicle: "PC", "LCV", "Motorcycle" or "Moped Sub-category of of vehicle: PC: "ECE_1501", "ECE_1502", "ECE_1503", "ECE_1504" , "IMPROVED_CONVENTIONAL", "OPEN_LOOP", "ALL", "2S" or "4S". LCV: "4S", Motorcycle: "2S" or "4S". Moped: "2S" or "4S" Size of engine in cc: PC: "<=1400", ">1400", "1400_2000", ">2000", "<=800", "<=2000". Motorcycle: ">=50" (for "2S"), "<=250", "250_750", ">=750". Moped: "<=50". LCV : "<3.5" for gross weight. Type of fuel: "G", "D", "LPG" or "FH" (Full Hybrid: starts by electric motor) Euro standard: "PRE", "I", "II", "III", "III+DPF", "IV", "V", "VI", "VIc" Pollutant: "CO", "FC", "NOx", "HC" or "PM". If your pollutant dfcol is based on fuel, use "FC", if it is based on "HC", use "HC". ## Value A list of scaled emission factors g/km ## Details This function calls "ef_ldv_speed" and calculate the specific k value, dividing the local emission factor by the respective speed emissions factor at the speed representative of the local emission factor, e.g. If the local emission factors were tested with the FTP-75 test procedure, SDC = 34.12 km/h. ## Note The length of the list should be equal to the name of the age categories of a specific type of vehicle. Thanks to Glauber Camponogara for the help. ## See also ef_ldv_seed ## Examples { data(fe2015) co1 <- fe2015[fe2015$Pollutant=="CO", ]
lef <- ef_ldv_scaled(dfcol = co1$PC_G, v = "PC", t = "4S", cc = "<=1400", f = "G", eu = co1$Euro_LDV, p = "CO")
length(lef)
lef[[1]](40) # First element of the lit of speed functions at 40 km/h
lef[[36]](50) # 36th element of the lit of speed functions at 50 km/h
plot(x = 0:150, y = lef[[36]](0:150), col = "red", type = "b", ylab = "[g/km]",
pch = 16, xlab = "[km/h]",
main = "Variation of emissions with speed of oldest vehicle")
plot(x = 0:150, y = lef[[1]](0:150), col = "blue", type = "b", ylab = "[g/km]",
pch = 16, xlab = "[km/h]",
main = "Variation of emissions with speed of newest vehicle")
}