UNR 41 04 ASEP Overview Overview of the

UN-R 41. 04 ASEP Overview

◆Overview of the regulation - To assess the amount of change in WOT noise relative to the engine speed. Full-throttle noise value d. B ASEP overview - The criterion are below the linear slope of 5 d. B/1, 000 rpm for higher engine speeds and 0* d. B/ 1, 000 rpm for lower engine (*1 d. B from 2017) speeds in relation to the reference point +3 d. B. - The regulation applies to Class III (PMR>50) only. ◆Reference point 　-The same as Lwot at the time of measuring Lurban (in case of measurement using the two gears, select the one for the lower gear). Test result image <Non-conformance area> 5 d. B/1000 rpm slope 0 d. B/1000 rpm slope Regulatory value Upper <Conformance area> 3 d. B limit point Reference point Lower limit point 0　Engine revolutions in front of microphone n. PP’ Test course overview (Throttle fully closed) B P B' P' Microphones A' A (Wide open throttle)

◆Upper limit point 　- The vehicle speed n. AA’ at point AA’ is adjusted so that the engine speed n. BB’ at point BB’ could satisfy the below and WOT noise level is measured. 　　n. BB’=0. 85×（ｓ-nidle）+nidle　(PMR≤ 66) (However, VBB’≤ 80 km/h) s: rated engine speed nidle: Enging speed at idle Full-throttle noise value d. B ASEP overview Test result image <Non-conformance area> 5 d. B/1000 rpm slope 0 d. B/1000 rpm slope Regulatory value Upper <Conformance area> 3 d. B limit point Reference point Lower limit point 0　Engine revolutions in front of microphone n. PP’ 　　n. BB’=3. 4×PMR-0. 33（ｓ-nidle）+nidle　(PMR>66) The selected gear shall be 2 nd. If the 3 rd gear satisfies Test course overview 　　 requirements of n. BB' and v. BB', 3 rd shall be used. If the 4 th gear satisfies requirements of n. BB' and v. BB', 4 th shall be used. ◆Lower limit point 　- The vehicle speed VAA’ is adjusted so that the engine speed n. AA’ at point AA’ could satisfy the below the WOT noise level is measured. 　　n. AA’=0. 1×（s-nidle）+nidle　　(However, VAA’≧ 20 km/h) 　　No specification of gear selection for the measurement. (Throttle fully closed) B P B' P' Microphones A' A (Wide open throttle)

◆Evaluation method of the final result 　- Noise value is plotted against engine speed in front of microphone n. PP’. 　- Measurement is required at least for the reference and upper limit points; Additional test points are allowed. 　- Criteria must be met at all points within the range from lower to upper ASEP limit lines. 　- If the change of n. BB’ is limited to less than 0. 05×（ｓ－nidle) against the reference point, the ASEP does not apply (in case of some CVT vehicles). Full-throttle noise value d. B ASEP overview Test result image <Non-conformance area> 5 d. B/1000 rpm slope 0 d. B/1000 rpm slope Regulatory value Upper <Conformance area> 3 d. B limit point Reference point Lower limit point 0　Engine revolutions in front of microphone n. PP’ Test course overview (Throttle fully closed) B P B' P' Microphones A' A (Wide open throttle)

ASEP control range Example v. BB' < 80 km/h n. BB' < 0. 85 * (S - nidle) + nidle (PMR < 66) 　　　 3. 4 * PMR - 0. 33 * (S - nidle) + nidle (PMR > 66) 1 st 2 nd 3 rd 4 th 5 th ASEP control range n. AA' > 0. 1 * (S - nidle) + nidle v. AA' > 20 km/h

Limit (shown by the graph) Example Line with slope of 5 d. B/1000 min-1 Lwot, (i) Line with slope of 1 d. B/1000 min-1 * 3 d. B Reference point full throttle acceleration test ･v. PP’ = 50 km/h ･the same gear(i) as tested in Annex 3 Any measurements shall be within this area. nwot, (i) * 0 d. B/1000 min-1 until the end of 2016

Example of ASEP measurement

Example of ASEP measurement G vehicle: MT model Maximum output=29 k. W; vehicle weight=168 kg; PMR＝ 119. 3; ｓ＝ 14000 rpm; nidle＝ 1600 rpm Desk study results of test conditions Upper limit point Lower limit point n. BB’＝ 10300 rpm n. AA’＝ 2840 rpm Gear VBB’（km/h） VAA’（km/h） 2 nd 61. 8 17. 0 3 rd 77. 7 21. 4 4 th 93. 8 25. 9 ◆Reference point 　Third gear VPP’=50 km/h (Lurban: Measured with third gear) ◆Upper limit point 　n. BB’=3. 4×PMR-0. 33（ｓ-nidle）+nidle　=10300 It is expected that 3 rd gear will be employed for the upper limit 　VBB’≦ 80 km/h measurement and 4 th gear for the lower limit. ◆Lower limit point 　n. AA’=0. 1×（ｓ-nidle）+nidle　=2840 Reference point test result 　VAA’≧ 20 km/h Gear Final test result 3 rd 1 2 3 Average Regulatory value （～ 2016） （2017～ ） Reference point Upper limit point Gear 3 rd 1 2 3 Average Lower limit point Gear 4 th 1 2 3 Average L 76. 1 76. 8 76. 7 76. 5 R 77. 6 76. 8 77. 2 VAA’ 41. 9 42. 4 40. 5 41. 6 VPP’ 50. 1 50. 7 49. 2 50. 0 VBB’ 57. 4 58. 1 57. 0 57. 5 n. PP’ 6589 6668 6471 6576 L 82. 7 81. 9 82. 7 82. 4 Upper limit value test result R VAA’ VPP’ VBB’ 81. 9 65. 9 71. 8 77. 9 82. 7 66. 4 71. 9 77. 9 82. 2 67. 0 72. 8 78. 1 82. 3 66. 4 72. 2 78. 0 n. PP’ 9443 9457 9575 9492 n. BB’ 10246 10272 10254 L 70. 7 70. 8 70. 7 Lower limit value test result R VAA’ VPP’ VBB’ 71. 1 26. 3 34. 0 39. 9 70. 8 26. 2 33. 8 39. 7 71. 1 25. 9 34. 2 40. 1 71. 0 26. 1 34. 0 39. 9 n. PP’ 3706 3684 3728 3706 n. AA’ 2867 2856 2823 2848

Example of ASEP measurement - If exemption provisions apply. ASEP exemption: If the variation of the exit engine speed n. BB’ relative to the reference point is below 0. 05×（ｓ－ nidle), then the ASEP does not apply. Vehicle H: CVT model; Max. output = 37. 7 k. W; Vehicle weight =250 kg; PMR＝ 116; ｓ＝ 7500 rpm; nidle=1300 rpm <Reference> Final test result Lwot　(d. B） ◆Reference point 　VPP’=50 km/h ◆Upper limit point 　n. BB’=3. 4×PMR-0. 33（ｓ-nidle）+nidle　=5691 　VBB’≦ 80 km/h ◆Lower limit point 　n. AA’=0. 1×（ｓ-nidle）+nidle　=1920 　VAA’≧ 20 km/h Std. Lower limit point Reference point Upper limit point Test result Vehicle speed　（km/h） Upper limit Referenc e point Lower limit Engine speed　（rpm） Noise(d. B) n. PP’　(rpm） Condition VAA’ VPP’ VBB’ Condition n. AA’ n. PP’ n. BB’ L R Differences from the value at reference VBB’≦ 80 72. 5 75. 4 80. 0 n. BB’≦ 5691 3879 4585 4810 78. 3 79. 3 point n. BB’ 4, 804 rpm are below “ 0. 05×（s- － 41. 6 50. 0 60. 1 － 3112 4437 4804 77. 5 80. 2 VAA’≧ 20 20. 0 40. 6 56. 2 n. AA’≧ 1920 2379 5094 5112 80. 6 82, 3 nidle）=310 rpm” for both upper and lower limits, and therefore the exemption applies. As it is unable to adjust the engine speed, measurements are made at VAA’=20 km/h and VBB’=80 km/h.

Questions or comments can be addressed to Daniela Leveratto, IMMA Technical Director, at the following email: d. leveratto@immamotorcycles. org Thank you!