[ANNEX VI U.K.
5. Test procedure U.K.
5.1. Canister(s) bench aging U.K.
5.1.3. Canister Fuel aging test U.K.
5.1.3.1. Fuel Aging for 300 cycles U.K.
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. U.K.
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.
5.1.3.1.1.1 The E10 market fuel used for this test shall fulfil the same requirements as an E10 reference fuel for the following points: U.K.
Density at 15 °C
Vapour Pressure (DVPE)
Distillation (evaporates only)
Hydrocarbon analysis (olefins, aromatics, benzene only)
Oxygen content
Ethanol content
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. U.K.
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. U.K.
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. U.K.
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.
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. U.K.
5.1.3.3. The manufacturer shall provide to the Type-Approval Authorities a test report including at least the following elements: U.K.