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COMMISSION REGULATION (EU) 2017/1221

of 22 June 2017

amending Regulation (EC) No 692/2008 as regards the methodology for the determination of evaporative emissions (Type 4 test)

(Text with EEA relevance)

(OJ L 174 7.7.2017, p. 3)

Official Journal

  No

page

date

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COMMISSION REGULATION (EU) 2017/1347 of 13 July 2017

  L 192

1

24.7.2017

1.1.

This Annex describes the procedure for the Type 4 test, which determines the emission of hydrocarbons by evaporation from the fuel systems of vehicles with positive ignition engines.

2.2

The evaporative emissions test consists of:

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.

3.1.1.

The vehicle shall be in good mechanical condition and have been run in and driven at least 3 000  km before the test. For the purpose of the determination of evaporative emissions, the mileage and the age of the vehicle used for certification shall be recorded. The evaporative emission control system shall be connected and have been functioning correctly over the run in period and the carbon canister(s) shall have been subject to normal use, neither undergoing abnormal purging nor abnormal loading. The carbon canister(s) aged according to the Procedure set out in point 5.1 shall be connected as described in Figure 1.

3.2.1.

The Type I E10 reference fuel specified in Annex IX to Regulation (EC) No 692/2008 shall be used. For the purposes of this Regulation, E10 reference shall mean the Type I reference fuel, except for the canister aging, as set out in point 5.1.

5.1.3.1.1.

After the temperature conditioning test and vibration test, the canister(s) is aged with a mixture of Type I E10 market fuel as specified in point 5.1.3.1.1.1 below and nitrogen or air with a 50 ± 15 percent fuel vapour volume. The fuel vapour fill rate must be kept between 60 ± 20 g/h.

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.

5.1.3.1.2.

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 standard conditions are 273,2 K and 101,33 kPa.

The canister must be purged between 5 minutes to 1 hour maximum after loading.

5.1.3.1.3.

The steps of the procedure set out in points 5.1.3.1.1 and.5.1.3.1.2 shall be repeated 50 times, followed by a measurement of the Butane Working Capacity (BWC), meant as the ability of an activated carbon canister to absorb and desorb butane from dry air under specified conditions, in 5 butane cycles, as described in point 5.1.3.1.4 below. The fuel vapour ageing will continue until 300 cycles are reached. A measurement of the BWC in 5 butane cycles, as set out in point 5.1.3.1.4, will be made after the 300 cycles.

5.1.3.1.4.

After 50 and 300 Fuel aging cycles, a measurement of BWC is performed. This measurement consists of loading the canister according to paragraph 5.1.6.3, of Annex 7 to UN/ECE Regulation No 83 until breakthrough. The BWC is recorded.

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 BWC50 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.

5.1.3.2.

If the canister(s) is (are) provided by the Suppliers, the Manufacturers shall inform in advance the Type-Approval Authorities to allow them to witness any part of the aging in the Supplier's facilities.

5.1.3.3.

The manufacturer shall provide to the Type-Approval Authorities a test report including at least the following elements:

5.2.1.

The tank is filled with fresh E10 reference fuel at a temperature of 18 °C ± 8 °C. The tank is filled at 40 % +/– 2 % of the nominal tank capacity. Then, the rig with the fuel system is placed in a specific and secure room with a controlled temperature of 40 °C +/– 2 °C for 3 weeks.

5.2.2.

At the end of the third week, the tank is drained and refilled with fresh E10 reference fuel at a temperature of 18 °C ± 8 °C at 40 % +/– 2 % of the nominal tank capacity.

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 HC3W.

5.2.3.

The rig with the fuel system is placed again in a specific and secure room with a controlled temperature of 40 °C +/– 2 °C for the remaining 17 weeks.

5.2.4.

At the end of the remaining 17th week, the tank is drained and refilled with fresh reference fuel at a temperature of 18 °C ± 8 °C at 40 % +/– 2 % of the nominal tank capacity.

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 HC20W.

5.2.5.

The Permeability Factor is the difference between HC20W and HC3W in g/24 h with 3 digits.

5.2.6.

If the Permeability Factor is determined by the Suppliers, the Manufacturers shall inform in advance the Type-Approval Authorities to allow witness check in Supplier's facilities.

5.2.7.

The manufacturer shall provide to the Type-Approval Authorities a test report containing at least the following elements:

5.2.8.

As an exception to points 5.2.1 to 5.2.7 above, the Manufacturers using multilayer tanks may choose to use the following assigned permeability factor (APF) instead of the complete measurement procedure mentioned above:

APF multilayer tank = 120 mg/24 h

5.3.6.1.

Within one hour from completing of canister loading, the vehicle is placed on the chassis dynamometer and driven through one Part One and one Part Two driving cycles of Type I according to Annex 4a to UN/ECE Regulation No 83. Then the engine is shut off. Exhaust emissions may be sampled during this operation but the results shall not be used for the purpose of exhaust emission type-approval.

5.3.6.2.

Within two minutes of completing the Type I Test drive specified in point 5.3.6.1 the vehicle is driven a further conditioning drive consisting of two Part One test cycles (hot start) of Type I. Then the engine is shut off again. Exhaust emissions need not be sampled during this operation.

5.3.9.1.

After the soak, a first measurement of Diurnal Losses over 24 hours is performed according to paragraph 5.7 of Annex 7 to UN/ECE Regulation No 83. Emissions are calculated according to paragraph 6 of Annex 7 to UN/ECE Regulation No 83. The obtained value is recorded as MD1.

5.3.9.2.

After the first 24 hours diurnal test, a second measurement of Diurnal Losses over 24 hours is performed according to paragraph 5.7 of Annex 7 to UN/ECE Regulation No 83. Emissions are calculated according to paragraph 6 of Annex 7 to UN/ECE Regulation No 83. The obtained value is recorded as MD2.

5.3.11

The manufacturer shall provide to the Type-Approval Authorities a test report containing at least the following elements: