ASEP Annex 7 General Process Subroutine Sound Model

ASEP Annex 7 General Process Subroutine Sound Model Reference Vehicle Testing Perform Type Approval Test according to Annex 3; Report LWOTi, n. BB_WOTi, v. BB’, WOTi, LCRSi, n. BB_CRSi, v. BB’, CRSi, Establish Sound Model Reference Establish test conditions according to paragraphs 2. 1 and 2. 2 Perform an ASEP Test within the Control Range according to paragraphs 2. 3 to 2. 5 Subroutine Sound Level Expectation Calculate expected sound level LEXP for each test run Evaluation Report for each ASEP Test LASEP, NASEP, VASEP, AASEP NO LMEAS, TEST < LEXP, TEST YES Test Run PASSES NO Max number Tests reached ? Test Run FAILS YES Testing and Test run evaluation is finished Proceed with final vehicle compliance evaluation

Establish Sound Model Reference Select Parameter Set Applicable for the Vehicle Calculate the Reference Tyre/Rolling Sound Level LREF, TR Calculate the Reference Power Train Mechanics Sound Level LREF, PT Calculate the Reference Dynamic Sound Level LREF, DYN Determine the Vehicle Dynamic Delta Sound Level ∆LDYN LWOT, REF - LCRS, REF < 1, 1? YES ∆LDYN = 10 d. B(A) Sound model reference established Subroutine End with NO

Calculate expected sound level LEXP, TEST for a single test run Calculate expected tyre rolling sound LTR, EXP NO v. TEST > 50 km/h Calculate expected power train mechanics sound level LPT, EXP YES NO n. WOT, TEST > n. WOT, REF YES Calculate expected base dynamic sound level LDYN, EXP NO n. WOT, TEST > n. WOT, REF 1 YES

1 Calculate expected dynamic delta sound level (load and performance) ∆LDYN, EXP NO a. MAX, REF determined ? Perform a measurement in a medium gear ratio with an engine speed between n. MAX, TORQUE and S YES Calculate reference acceleration a. MAX, REF Calculate reference gear ratio i. REF Calculate the load portion LOADTEST = a. TEST / a. MAX, i Calculate performance va. TEST va > va. REF YES Calculate performance component Calculate expected dynamic delta sound level (load and performance) ∆LDYN, EXP 2 NO Set performance component

2 Calculate expectation sound level LEXP, TEST for an individual test run LEXP, TEST determined Subroutine End

Compliance Evaluation Subroutine End

Parameter Table Symbol Unit ICE PEV PMR < 25 v. REF km/h 50 50 40 x % 90 98 50 T/R Sound Slope < 50 km/h q. TR, LO d. B/log(v/vref) 20 20 20 T/R Sound Slope > 50 km/h q. TR, HI d. B/log(v/vref) 40 40 40 P/T Sound Slope < n. BB, CRS, REP q. PT, LO d. B/Log(n/nref) 60 60 60 P/T Sound Slope > n. BB, CRS, REP q. PT, HI d. B/Log(n/nref) 150 150 n. SHIFT, PT rpm 5000 Dynamic Sound Slope < n. BB, WOT, REP q. DYN, LO d. B/Log(n/nref) 60 60 60 Dynamic Sound Slope > n. BB, WOT, REP q. DYN, HI d. B/Log(n/nref) 110 110 n. SHIFT, DYN rpm 5000 va. REF m²/s³ 28 28 28 Dynamic vxa Factor b b d. B(A) 8 8 8 Partial Load Form Factor a a --- 0, 111 Base Margin m d. B(A) 2 2 2 Model Part Parameter Reference Vehicle Speed TYRE Tyre Rolling Sound Energy Fraction of Annex 3 Cruise Test LCRS, REP MECHANIC NO LOAD Form Factor for the logarithm function of the meachanic sound model DYNAMIC LOAD Form Factor for the logarithm function of the dynamic sound model Reference Performance DYNAMIC Vx. A GENERAL M 1