of Annex 3 Clause Samples
of Annex 3. The accelerator shall be kept in depressed condition until the rear of the vehicle reaches line BB'. In case of non-locked transmission conditions, the test may include a gear ratio change to a lower range and a higher acceleration. A gear change to a higher range and a lower acceleration is not allowed. If possible, the manufacturer shall take measures to avoid that a gearshift leads to a condition not in compliance with the boundary conditions. For that, it is permitted to establish and use electronic or mechanical devices, such as alternate gear selector positions. If no such measures can be applied, the rationale shall be provided and documented in the technical report. Table 1 in Appendix to Annex 3 provides examples for valid measures to control the downshift of gears. Any measure used by manufacturer for the above-mentioned purposes shall be documented in the test report.
2.5.2. Measurements reading: Per test point, one single run is carried out. For every separate test run, the following parameters shall be determined and noted:
of Annex 3. At least two measurements shall be made on each side of the vehicle. The final sound level result shall be calculated according to paragraph 3.1.4. of Annex 3.
of Annex 3. The accelerator shall be kept in depressed condition until the rear of the vehicle reaches line BB'. In case of non-locked transmission conditions, the test may include a gear ratio change to a lower range and a higher acceleration. A gear change to a higher range and a lower acceleration is not allowed. If possible, the manufacturer shall take measures to avoid that a gearshift leads to a condition not in compliance with the boundary conditions. For that, it is permitted to establish and use electronic or mechanical devices, such as alternate gear selector positions. If no such measures can be applied, the rationale shall be provided and documented in the technical report.
2.5.2. Measurements reading: Per test point, one single run is carried out. For every separate test run, the following parameters shall be determined and noted: The maximum A-weighted sound pressure level of both sides of the vehicle, indicated during each passage of the vehicle between the two lines AA' and BB', shall be mathematically rounded to the first decimal place (Lwot,κj). If a sound peak obviously out of character with the general sound pressure level is observed, the measurement shall be discarded. Left and right side may be measured simultaneously or separately. For further processing, the higher sound pressure level of both sides shall be used. The vehicle speed readings at AA', PP’ and BB' shall be rounded and reported with the first significant digit after the decimal place. (vAA,κj; vPP,κj; vBB,κj) If applicable, the engine speed readings at BB' shall be reported as a full integer value (nBB,κj).
2.5.3. The calculated acceleration shall be determined in accordance to the formula in paragraph 3.
of Annex 3. At least two measurements shall be made on each side of the vehicle. The final sound level result shall be calculated according to paragraph 3.1.4. of Annex 3.
3.3.2.3. Data processing and reporting The engine speed measurements at AA' and BB' shall be averaged arithmetically. The results in units of min-1 shall be mathematically rounded to the nearest integer. The nBB’ value shall be used for the calculations specified in paragraph 4 of this Annex. The final sound pressure level for the full throttle acceleration shall not exceed the limits specified in paragraph 4 of this Annex.
3.3.3. ASEP test 2
3.3.3.1. Test speed and gear selection The selected gear shall be
(a) gref or gref + 1, if gref = 2,
(b) gref. – 1, gref or gref + 1, if gref > 2 The gear and vAA’ shall be chosen in that way, so as the test condition complies with the control range specifications and that nBB’ > 1,15*nBB’_ref Pretests may be carried out in order to determine an appropriate measurement condition.
3.3.3.2. The sound level determination shall be performed as described in paragraph
of Annex 3. The accelerator shall be kept in depressed condition until the rear of the vehicle reaches line BB'. In case of non-locked transmission conditions, the test may include a gear ratio change to a lower range and a higher acceleration. A gear change to a higher range and a lower acceleration is not allowed. If possible, the manufacturer shall take measures to avoid that a gearshift leads to a condition not in compliance with the boundary conditions. For that, it is permitted to establish and use electronic or mechanical devices, such as alternate gear selector positions. If no such measures can be applied, the rationale shall be provided and documented in the technical report. Table 1 in Appendix to Annex 3 provides examples for valid measures to control the downshift of gears. Any measure used by manufacturer for the above-mentioned purposes shall be documented in the test report."
of Annex 3. At least two measurements shall be made on each side of the vehicle. The final sound level result shall be calculated according to paragraph 3.1.4. of Annex 3. This value constitutes the reference level Lref. The gear chosen for the test constitutes the reference gear gref.
3.3.1.3. The nBB’ values of the measurements shall be averaged and rounded to the nearest integer. This value constitutes the reference engine speed nBB’_ref.
3.3.2. ASEP test 1
3.3.2.1. Test speed and gear selection The selected gear shall be
(a) gref or gref + 1, if gref = 2,
(b) gref. – 1, gref or gref + 1, if gref > 2 The gear and vAA’ shall be chosen in that way, so that the test condition complies with the control range specifications and that nBB’ < 0,85*nBB’_ref Pretests may be carried out in order to determine an appropriate measurement condition.
3.3.2.2. The sound level determination shall be performed as described in paragraph
of Annex 3. If the ratio awot_test,PP-BB / awot_test,AA-BB does not exceed or is equal to 1,20, then proceed with the acceleration calculation between line AA’ and Line BB’. If the ratio awot_test,PP-BB / awot_test,AA-BB does exceed 1,20, then proceed with the acceleration calculation between line PP’ and line BB’. In case of non-locked transmission conditions where nBB_ASEP is exceeded during the test, the following measures shall be considered separately or together: provisions of paragraph 2.5.1. increased speed in steps of 5 km/h. The test speed for tThe fourth test point P4 in any gear is defined by either the maximum vehicle speed at BB' in that gear ratio within the boundary conditions according to paragraph 2.3. 0.95 x nBB_ASEP ≤ nBB,κ4 ≤nBB_ASEP or vBB_ASEP - 3 km/h ≤ VBB,κ4 ≤ VBB_ASEP with VBB_ASEP as defined in paragraph 2.3. The test speed for the other two test points are is defined by the following formula: Test Point Pj: vBB,_ κj = vBB,κ_1 + ((j - 1) / 3) * (vBB,κ_4 - vBB,κ_1) for j = 2 and 3 with a tolerance of ±3 km/h Where:
of Annex 3. A.24. Pressure relief device requirements Pressure relief device specified by the manufacturer shall be shown to be compatible with the service conditions listed in paragraph 4. of Annex 3 and through the following qualification tests:
(a) One specimen shall be held at a controlled temperature of not less than 95 °C and a pressure not less than test pressure (30 MPa) for 24 hours. At the end of this test there shall be no leakage or visible sign of extrusion of any fusible metal used in the design.
(b) One specimen shall be fatigue tested at a pressure cycling rate not to exceed 4 cycles per minute as follows:
(i) Held at 82 °C while pressured for 10,000 cycles between 2 MPa and 26 MPa;
(ii) Held at -40 °C while pressure for 10,000 cycles between 2 MPa and 20 MPa. At the end of this test there shall be no leakage, or any visible sign of extrusion of any fusible metal used in the design.
(c) Exposed brass pressure retaining components of pressure relief devices shall withstand, without stress corrosion cracking, a mercurous nitrate test as described in ASTM B154. The pressure relief device shall be immersed for 30 minutes in an aqueous mercurous nitrate solution containing 10 g of mercurous nitrate and 10 ml of nitric acid per litre of solution. Following the immersion, the pressure relief device shall be leak tested by applying an aerostatic pressure of 26 MPa for one minute during which time the component shall be checked for external leakage; Any leakage shall not exceed 200 cm3/h;
(d) Exposed stainless steel pressure retaining components of pressure relief devices shall be made of an alloy type resistant to chloride induced stress corrosion cracking;
A.25. Boss torque test The body of the cylinder shall be restrained against rotation and a torque of 500 Nm shall be applied to each end boss of the cylinder, first in the direction to tighten a threaded connection, then in the untightening direction, and finally again in the tightening direction.
A.26. Resin shear strength Resin materials shall be tested on a sample coupon representative of the composite over-wrap in accordance with ASTM D2344, or an equivalent National Standard. Following a 24-hour water boil the composite shall have a minimum shear strength of 13.8 MPa.
A.27. Natural gas cycling test One finished cylinder shall be pressure cycled using compressed natural gas from less than 2 MPa to working pressure for 300 cycles. Each cycle, consisting of the filling and venting of the cylinder, shall n...
of Annex 3. The accelerator shall be kept in depressed condition until the rear of the vehicle reaches line BB'. In case of non-locked transmission conditions, the test may include a gear ratio change to a lower range and a higher acceleration. A gear change to a higher range and a lower acceleration is not allowed. If possible, the manufacturer shall take measures to avoid that a gearshift leads to a condition not in compliance with the boundary conditions. For that, it is permitted to establish and use electronic or mechanical devices, such as alternate gear selector positions. If no such measures can be applied, the rationale shall be provided and documented in the technical report. Table 1 in Appendix to Annex 3 provides examples for valid measures to control the downshift of gears. Any measure used by manufacturer for the above-mentioned purposes shall be documented in the test report." Paragraph 2.5.2., amend to read:
2.5.2. Measurements reading: Per test point, one single run is carried out. For every separate test run, the following parameters shall be determined and noted:
of Annex 3. Pressure relief device requirements