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Commission Regulation (EC) No 692/2008 of 18 July 2008 implementing and amending Regulation (EC) No 715/2007 of the European Parliament and of the Council on type-approval of motor vehicles with respect to emissions from light passenger and commercial vehicles (Euro 5 and Euro 6) and on access to vehicle repair and maintenance information (Text with EEA relevance)
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Textual Amendments
The procedure includes the evaporative emissions test and two additional tests, one for the aging of the carbon canister, as described in point 5.1, and one for the permeability of the fuel storage system, as described in point 5.2.
The evaporative emissions test (Figure 1) is designed to determine hydrocarbon evaporative emissions as a consequence of diurnal temperatures fluctuation, hot soaks during parking, and urban driving.
Test drive including an urban (Part One) and an extra-urban (Part Two) driving cycle, followed by two urban (Part One) driving cycles,
Hot soak loss determination,
Diurnal loss determination.
The mass emissions of hydrocarbons from the hot soak and the diurnal loss phases are added up together with the permeability factor to provide an overall result for the test.
The chassis dynamometer shall meet the requirements of Appendix 1 of Annex 4a to UN/ECE Regulation No 83.
The evaporative emission measurement enclosure shall meet the requirements of paragraph 4.2 of Annex 7 to UN/ECE Regulation No 83.
3 000 km run-in period (no excessive purge/load)
Use of aged of canister(s)
Steam-clean of vehicle (if necessary)
Reducing or removing non-fuel background emission sources (if agreed)
Evaporative emission control families — as in point 3.2 of Annex I
Exhaust emissions may be measured during Type I test drive but these are not used for legislative purposes. Exhaust emission legislative test remains separate.
The analytical systems shall meet the requirements of paragraph 4.3 of Annex 7 to UN/ECE Regulation No 83.
The temperature recording shall meet the requirements of paragraph 4.5 of Annex 7 to UN/ECE Regulation No 83.
The pressure recording shall meet the requirements of paragraph 4.6 of Annex 7 to UN/ECE Regulation No 83.
The fans shall meet the requirements of paragraph 4.7 of Annex 7 to UN/ECE Regulation No 83.
The gases shall meet the requirements of paragraph 4.8 of Annex 7 to UN/ECE Regulation No 83.
The additional equipment shall meet the requirements of paragraph 4.9 of Annex 7 to UN/ECE Regulation No 83.
Before performing the hot soak and diurnal losses sequences, the canister(s) must be aged according the following procedure described in Figure 2.
In a dedicated temperature chamber, the canister(s) is (are) cycled between temperatures from – 15 °C to 60 °C, with 30 min of stabilisation at – 15 °C and 60 °C. Each cycle shall last 210 min as in Figure 3. The temperature gradient shall be as close as possible to 1 °C/min. No forced air flow should pass through the canister(s).
The cycle is repeated 50 times consecutively. In total, this operation will last 175 hours.
After the temperature aging procedure, the canister(s) is (are) shaken along the vertical axis with the canister(s) mounted as per its orientation in the vehicle with overall Grms (1) > 1,5 m/sec 2 with frequency of 30 ± 10 Hz. The test shall last 12 hours.
The canister(s) is (are) loaded to the corresponding breakthrough. Breakthrough shall be considered as the point at which the cumulative quantity of hydrocarbons emitted is equal to 2 grams. As an alternative, the loading is deemed completed when the equivalent concentration level at the vent hole reaches 3 000 ppm.
Density at 15 °C
Vapour Pressure (DVPE)
Distillation (evaporates only)
Hydrocarbon analysis (olefins, aromatics, benzene only)
Oxygen content
Ethanol content
The canister must be purged between 5 minutes to 1 hour maximum after loading.
Then, the canister(s) shall be purged according the procedure of paragraph 5.1.3.8 of Annex 7 to UN/ECE Regulation No 83.
The canister must be purged between 5 minutes to 1 hour maximum after loading.
The operation of butane loading is repeated 5 times. The BWC is recorded after each butane loading step. The BWC 50 is calculated as the average of the 5 BWC and recorded.
In total, the canister(s) will be aged with 300 fuel aging cycles + 10 butane cycles and considered to be stabilised.
Type of activated carbon,
Loading rate,
Fuel specifications,
BWC measurements
The fuel storage system representative of a family is selected and fixed to a rig, then soaked with E10 reference fuel for 20 weeks at 40 °C +/– 2 °C. The orientation of the fuel storage system on the rig has to be similar to the original orientation on the vehicle.
Within 6 to 36 hours, the last 6 hours at 20 °C ± 2 °C the rig with the fuel system is placed in a VT-SHED a diurnal procedure is performed over a period of 24 hours, according to the procedure described according to paragraph 5.7 of Annex 7 of UN/ECE Regulation No 83. The fuel system is vented to the outside of the VT-SHED to eliminate the possibility of the tank venting emissions being counted as permeation. The HC emissions are measured and the value is recorded as HC 3W .
Within 6 to 36 hours, the last 6 hours at 20 °C ± 2 °C, the rig with the fuel system is placed in a VT-SHED a diurnal procedure is performed over a period of 24 hours, according to the procedure described according to paragraph 5.7 of Annex 7 of UN/ECE Regulation No 83. The fuel system is vented to the outside of the VT-SHED to eliminate the possibility of the tank venting emissions being counted as permeation. The HC emissions are measured and the value is recorded as HC 20W .
A full description of the fuel storage system tested, including information on the type of tank tested, whether the tank is monolayer or multilayer and which types of materials are used for the tank and other parts of the fuel storage system,
the weekly mean temperatures at which the ageing was performed,
the HC measured at week 3 (HC 3W ),
the HC measured at week 20 (HC 20W )
the resulting Permeability Factor (PF)
APF multilayer tank = 120 mg/24 h
The vehicle is prepared in accordance to paragraph 5.1.1 and 5.1.2 of Annex 7 of UN/ECE Regulation No 83. At the request of the manufacturer and with the approval of the responsible authority, non-fuel background emission sources may be removed or reduced before testing (e.g. baking tire or vehicle, removing washer fluid).
The vehicle is parked for a minimum of 12 hours and a maximum of 36 hours in the soak area. The engine oil and coolant temperatures shall have reached the temperature of the area or within ± 3 °C of it at the end of the period.
The fuel drain and refill is performed in accordance to the procedure of paragraph 5.1.7 of Annex 7 of UN/ECE Regulation No 83.
Within one hour from the completing of fuel drain and refill, the vehicle is placed on the chassis dynamometer and driven through one Part One and two Part Two driving cycles of Type I according to Annex 4a to UN/ECE Regulation No 83.
Exhaust emissions are not sampled during this operation.
Within five minutes of completing the preconditioning operation the vehicle is parked for a minimum of 12 hours and a maximum of 36 hours in the soak area. The engine oil and coolant temperatures shall have reached the temperature of the area or within ± 3 °C of it at the end of the period.
The canister(s) aged according to the sequence described in point 5.1 is loaded to breakthrough according to the procedure paragraph 5.1.4 of Annex 7 to UN/ECE Regulation No 83.
After the Dynamometer test, hot soak evaporative emissions test is performed in accordance to paragraph 5.5 of Annex 7 to UN/ECE Regulation No 83. The hot soak losses result is calculated according to paragraph 6 of Annex 7 to UN/ECE Regulation No 83 and recorded as M HS .
After hot soak evaporative emissions test, a soak is performed according to paragraph 5.6 of Annex 7 to UN/ECE Regulation No 83.
The result of M HS + M D1 + M D2 + 2PF shall be below the limit defined in Table 3 of Annex 1 to Regulation (EC) No 715/2007.
description of the soak periods, including time and mean temperatures
description to aged canister used and reference to exact ageing report
mean temperature during the hot soak test
measurement during hot soak test, HSL
measurement of first diurnal, DL 1st day
measurement of second diurnal, DL 2nd day
final evaporative test result, calculated as ‘M HS + M D1 + M D2 + 2PF]’
:
The root mean square (rms) value of the vibration signal is calculated by squaring the magnitude of the signal at every point, finding the average (mean) value of the squared magnitude, then taking the square root of the average value. The resulting number is the Grms metric.]
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