ef_hdv_scaled.Rdef_hdv_scaled creates a list of scaled functions of emission factors. A scaled
emission factor which at a speed of the dricing cycle (SDC) gives a desired value.
This function needs a dataframe with local emission factors with a columns with
the name "Euro_HDV" indicating the Euro equivalence standard, assuming that there are
available local emission factors for several consecutive years.
ef_hdv_scaled(df, dfcol, SDC = 34.12, v, t, g, eu, gr = 0, l = 0.5, p)
| df | deprecated |
|---|---|
| dfcol | Column of the dataframe with the local emission factors eg df$dfcol |
| SDC | Speed of the driving cycle |
| v | Category vehicle: "Coach", "Trucks" or "Ubus" |
| t | Sub-category of of vehicle: "3Axes", "Artic", "Midi", "RT, "Std" and "TT" |
| g | Gross weight of each category: "<=18", ">18", "<=15", ">15 & <=18", "<=7.5", ">7.5 & <=12", ">12 & <=14", ">14 & <=20", ">20 & <=26", ">26 & <=28", ">28 & <=32", ">32", ">20 & <=28", ">28 & <=34", ">34 & <=40", ">40 & <=50" or ">50 & <=60" |
| eu | Euro emission standard: "PRE", "I", "II", "III", "IV" and "V" |
| gr | Gradient or slope of road: -0.06, -0.04, -0.02, 0.00, 0.02. 0.04 or 0.06 |
| l | Load of the vehicle: 0.0, 0.5 or 1.0 |
| p | Pollutant: "CO", "FC", "NOx" or "HC" |
A list of scaled emission factors g/km
The length of the list should be equal to the name of the age categories of a specific type of vehicle
if (FALSE) { # Do not run data(fe2015) co1 <- fe2015[fe2015$Pollutant=="CO",] lef <- ef_hdv_scaled(dfcol = co1$LT, v = "Trucks", t = "RT", g = "<=7.5", eu = co1$Euro_HDV, gr = 0, l = 0.5, p = "CO") length(lef) 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") }