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Commission Delegated Regulation (EU) No 134/2014Show full title

Commission Delegated Regulation (EU) No 134/2014 of 16 December 2013 supplementing Regulation (EU) No 168/2013 of the European Parliament and of the Council with regard to environmental and propulsion unit performance requirements and amending Annex V thereof (Text with EEA relevance)

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Appendix 1Symbols used in Annex II

Table Ap 1-1 Symbols used in Annex II U.K.
SymbolDefinitionUnit
aCoefficient of polygonal function
aTRolling resistance force of front wheelN
bCoefficient of polygonal function
bTCoefficient of aerodynamic function
cCoefficient of polygonal function
CCOConcentration of carbon monoxidepercent vol.
CCOcorr Corrected concentration of carbon monoxidepercent vol.
CO2cCarbon dioxide concentration of diluted gas, corrected to take account of diluent airpercent
CO2dCarbon dioxide concentration in the sample of diluent air collected in bag Bpercent
CO2eCarbon dioxide concentration in the sample of diluent air collected in bag Apercent
CO2mMass of carbon dioxide emitted during the test partg/km
COcCarbon monoxide concentration of diluted gas, corrected to take account of diluent airppm
COdCarbon monoxide concentration in the sample of diluent air, collected in bag Bppm
COeCarbon monoxide concentration in the sample of diluent air, collected in bag Appm
COmMass of carbon monoxide emitted during the test partmg/km
d0Standard ambient relative air density
dCODensity of carbon monoxidemg/m3
dCO2 Density of carbon dioxidemg/m3
DFDilution factor
dHCDensity of hydrocarbonmg/m3
S / dDistance driven in a cycle partkm
dNOX Density of nitrogen oxidemg/m3
dTRelative air density under test condition
ΔtCoast-down times
ΔtaiCoast-down time measured in the first road tests
ΔtbiCoast-down time measured in the second road tests
ΔTECoast-down time corrected for the inertia masss
ΔtEMean coast-down time on the chassis dynamometer at the reference speeds
ΔTiAverage coast-down time at specified speeds
ΔtiCoast-down time at corresponding speeds
ΔTjAverage coast-down time at specified speeds
ΔTroadTarget coast-down times
Mean coast-down time on the chassis dynamometer without absorptions
ΔvCoast-down speed interval ( )km/h
εChassis dynamometer setting errorpercent
FRunning resistance forceN
F*Target running resistance forceN
F*(v0)Target running resistance force at reference speed on chassis dynamometerN
F*(vi)Target running resistance force at specified speed on chassis dynamometerN
f*0Corrected rolling resistance in the standard ambient conditionN
f*2Corrected coefficient of aerodynamic drag in the standard ambient condition
F*jTarget running resistance force at specified speedN
f0Rolling resistanceN
f2Coefficient of aerodynamic drag
FESet running resistance force on the chassis dynamometerN
FE(v0) Set running resistance force at the reference speed on the chassis dynamometerN
FE(v2) Set running resistance force at the specified speed on the chassis dynamometerN
FfTotal friction lossN
Ff(v0) Total friction loss at the reference speedN
FjRunning resistance forceN
Fj(v0)Running resistance force at the reference speedN
FpauBraking force of the power absorbing unitN
Fpau(v0)Braking force of the power absorbing unit at the reference speedN
Fpau(vj)Braking force of the power absorbing unit at the specified speedN
FTRunning resistance force obtained from the running resistance tableN
HAbsolute humiditymg/km
HCcConcentration of diluted gases expressed in the carbon equivalent, corrected to take account of diluent airppm
HCdConcentration of hydrocarbons expressed in the carbon equivalent, in the sample of diluent air collected in bag Bppm
HCeConcentration of hydrocarbons expressed in the carbon equivalent, in the sample of diluent air collected in bag Appm
HCmMass of hydrocarbon emitted during the test partmg/km
K0Temperature correction factor for rolling resistance
KhHumidity correction factor
LLimit values of gaseous emissionmg/km
mTest L-category vehicle masskg
maActual mass of the test L-category vehiclekg
mfiFlywheel equivalent inertia masskg
miEquivalent inertia masskg
mkKerb mass (L-category vehicle)kg
mrEquivalent inertia mass of all the wheelskg
mriEquivalent inertia mass of all the rear wheel and L-category vehicle parts rotating with wheelkg
mrefMass in running order of the L-category vehicle plus mass of driver (75 kg)kg
mrfRotating mass of the front wheelkg
mridRider masskg
nEngine speedmin–1
nNumber of data regarding the emission or the test
NNumber of revolution made by pump P
ngNumber of forward gears
nidleIdling speedmin–1
n_max_acc (1)Upshift speed from gear 1 to gear 2 during acceleration phasesmin–1
n_max_acc (i)Up shift speed from gear i to gear i+1 during acceleration phases, i > 1min–1
n_min_acc (i)Minimum engine speed for cruising or deceleration in gear 1min–1
NOxcNitrogen oxide concentration of diluted gases, corrected to take account of diluent airppm
NOxdNitrogen oxide concentration in the sample of diluent air collected in bag Bppm
NOxeNitrogen oxide concentration in the sample of diluent air collected in bag Appm
NOxmMass of nitrogen oxides emitted during the test partmg/km
P0Standard ambient pressurekPa
PaAmbient/atmospheric pressurekPa
PdSaturated pressure of water at the test temperaturekPa
PiAverage under-pressure during the test part in the section of pump PkPa
PnRated engine powerkW
PTMean ambient pressure during the testkPa
ρ0Standard relative ambient air volumetric masskg/m3
r(i)Gear ratio in gear i
RFinal test result of pollutant emissions, carbon dioxide emission or fuel consumption

mg/km,

g/km, 1/100 km

R1Test results of pollutant emissions, carbon dioxide emission or fuel consumption for cycle part 1 with cold start

mg/km,

g/km, 1/100 km

R2Test results of pollutant emissions, carbon dioxide emission or fuel consumption for cycle part 2 with warm condition

mg/km,

g/km, 1/100 km

R3Test results of pollutant emissions, carbon dioxide emission or fuel consumption for cycle part 1 with warm condition

mg/km,

g/km, 1/100 km

Ri1 First type I test results of pollutant emissionsmg/km
Ri2 Second type I test results of pollutant emissionsmg/km
Ri3 Third type I test results of pollutant emissionsmg/km
sRated engine speedmin–1
TCTemperature of the coolantK
TOTemperature of the engine oilK
TPTemperature of the spark-plug seat/gasketK
T0Standard ambient temperatureK
TpTemperature of the diluted gases during the test part, measured in the intake section of pump PK
TTMean ambient temperature during the testK
Uhumiditypercent
vSpecified speed
VTotal volume of diluted gasm3
vmaxMaximum design speed of test vehicle (L-category vehicle)km/h
v0Reference vehicle speedkm/h
V0Volume of gas displaced by pump P during one revolutionm3/rev.
v1Vehicle speed at which the measurement of the coast-down time beginskm/h
v2Vehicle speed at which the measurement of the coast-down time endskm/h
viSpecified vehicle speed selected for the coast-down time measurementkm/h
w1Weighting factor of cycle part 1 with cold start
w1hotWeighting factor of cycle part 1 with warm condition
w2Weighting factor of cycle part 2 with warm condition
w3Weighting factor of cycle part 3 with warm condition

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