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    E_ECE_324_Rev.1_Add.50_Rev.3−E_ECE_TRANS_505_Rev.1_Add.50_Rev.3.pdf

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    E_ECE_324_Rev.1_Add.50_Rev.3−E_ECE_TRANS_505_Rev.1_Add.50_Rev.3.pdf

    Agreement Concerning the Adoption of Uniform Technical Prescriptions for Wheeled Vehicles, Equipment and Parts which can be Fitted and/or be Used on Wheeled Vehicles and the Conditions for Reciprocal Recognition of Approvals Granted on the Basis of these Prescriptions* Revision 2, including the amendments which entered into force on 16 October 1995 _________ Addendum 50 – Regulation No. 51 Revision 3 03 series of amendments – Date of entry into force 20 January 2016 Uniform provisions concerning the approval of motor vehicles having at least four wheels with regard to their sound emissions This document is meant purely as documentation tool. The authentic and legal binding text is ECE/TRANS/WP.29/2015/62. _________ UNITED NATIONS * Former title of the Agreement Agreement Concerning the Adoption of Uniform Conditions of Approval and Reciprocal Recognition of Approval for Motor Vehicle Equipment and Parts, done at Geneva on 20 March 1958. E/ECE/324/Rev.1/Add.50/Rev.3−E/ECE/TRANS/505/Rev.1/Add.50/Rev.3 5 February 2016 E/ECE/324/Rev.1/Add.50/Rev.3 E/ECE/TRANS/505/Rev.1/Add.50/Rev.3 3 Regulation No. 51 Uniform provisions concerning the approval of motor vehicles having at least four wheels with regard to their sound emissions Contents Page Regulation 1. Scope . 4 2. Definitions . 4 3. Application for approval . 14 4. Markings . 14 5. Approval 15 6. Specifications 16 7. Modification and extension of approval of a vehicle type 19 8. Conformity of production 19 9. Penalties for non-conformity of production 19 10. Production definitively discontinued . 20 11. Transitional provisions 20 12. Names and addresses of Technical Services responsible for conducting approval tests and of Type Approval Authorities 22 Annexes 1 Communication . 23 Appendix 1 - Addendum to the communication form No 25 Appendix 2 - Technical Information Document 26 2 Arrangements of the approval mark 30 3 Methods and instruments for measuring the sound made by motor vehicles 31 Appendix . 50 4 Exhaust silencing systems containing acoustically absorbing fibrous materials . 63 Appendix . 65 5 Compressed air noise 66 Appendix . 67 6 Checks on conformity of production . 68 7 Measuring method to evaluate compliance with the Additional Sound Emission Provisions . 69 Appendix - Statement of Compliance with the Additional Sound Emission Provisions . 75 E/ECE/324/Rev.1/Add.50/Rev.3 E/ECE/TRANS/505/Rev.1/Add.50/Rev.3 4 1. Scope This Regulation contains provisions on the sound emitted by motor vehicles and applies to vehicles of categories M and N.1 The specifications in this Regulation are intended to reproduce the sound levels which are generated by vehicles during normal driving in urban traffic. 2. Definitions For the purpose of this Regulation, 2.1. “Approval of a vehicle“ means the approval of a vehicle type with regard to sound; 2.2. “Vehicle type“ means a category of motor vehicles which do not differ in such essential respects as 2.2.1. For vehicles tested according to Annex 3, paragraph 3.1.2.1. 2.2.1.1. The shape or materials of the engine compartment and its soundproofing; 2.2.1.2. The type of engine positive or compression ignition, two- or four-stroke, reciprocating or rotary piston, number and capacity of cylinders, number and type of carburettors or injection system, arrangement of valves, or the type of electric motor; 2.2.1.3. Rated maximum net power and corresponding rated engine speeds; however if the rated maximum net power and the corresponding rated engine speed differs only due to different engine mappings, these vehicles may be regarded as from the same type; 2.2.1.4. The silencing system. 2.2.2. For vehicles tested according to Annex 3, paragraph 3.1.2.2. 2.2.2.1. The shape or materials of the engine compartment and its soundproofing; 2.2.2.2. The type of engine positive or compression ignition, two- or four-stroke, reciprocating or rotary piston, number and capacity of cylinders, type of injection system, arrangement of valves, rated engine speed S, or the type of electric motor; 2.2.2.3. Vehicles having the same type of engine and/or different overall gear ratios may be regarded as vehicles of the same type; 2.3. However, if the differences in paragraph 2.2.2. provide for different target conditions, as described in paragraph 3.1.2.2. of Annex 3, these differences are to be considered as a change of type; 1 As defined in the Consolidated Resolution on the Construction of Vehicles R.E.3., document ECE/TRANS/WP.29/78/Rev.3, para. 2 - www.unece.org/trans/main/wp29/wp29wgs/wp29gen/wp29resolutions.html E/ECE/324/Rev.1/Add.50/Rev.3 E/ECE/TRANS/505/Rev.1/Add.50/Rev.3 5 2.4. “Mass of a vehicle in running order mro“ means a In the case of a motor vehicle The mass of the vehicle, with its fuel tanks filled to at least 90 per cent of its or their capacity/ies, including the mass of the driver, of the fuel and liquids, fitted with the standard equipment in accordance with the manufacturers specifications and, when they are fitted, the mass of the bodywork, the cabin, the coupling and the spare wheels as well as the tools; b In the case of a trailer The mass of the vehicle including the fuel and liquids, fitted with the standard equipment in accordance with the manufacturers specifications, and, when they are fitted, the mass of the bodywork, additional couplings, the spare wheels and the tools. 2.5. “Technically permissible maximum laden mass M“ means the maximum mass allocated to a vehicle on the basis of its construction features and its design performances; the technically permissible laden mass of a trailer or of a semi-trailer includes the static mass transferred to the towing vehicle when coupled; 2.6. “Vehicle length“ means a dimension which is measured according to ISO standard 612-1978, term No. 6.1. In addition to the provisions of that standard, when measuring the vehicle structural length the following devices shall not be taken into account a Wiper and washer devices; b Front or rear marker-plates; c Customs sealing devices and their protection; d Devices for securing the tarpaulin and their protection; e Lighting equipment; f Rear view mirrors; g Rear space watching aids; h Air-intake pipes; i Length stops for demountable bodies; j Access steps; k Ram rubbers; l Lifting platforms, access ramps and similar equipment in running order, not exceeding 200 mm, provided that the loading capacity of the vehicle is not increased; m Coupling devices for motor vehicles. 2.7 “Vehicle width“ means a dimension which is measured according to ISO standard 612-1978, term No. 6.2. In addition to the provisions of that standard, when measuring the vehicle structural width the following devices shall not be taken into account a Customs sealing devices and their protection; E/ECE/324/Rev.1/Add.50/Rev.3 E/ECE/TRANS/505/Rev.1/Add.50/Rev.3 6 b Devices for securing the tarpaulin and their protection; c Tyre failure tell-tale devices; d Protruding flexible parts of a spray-suppression system; e Lighting equipment. 2.8. “Rated maximum net power, Pn “ means the engine power expressed in kW and measured by the method pursuant to Regulation No. 85. 2.8.1. “Total engine power“ means the sum of all power from available propulsion sources. 2.9. “Rated engine speed, S“ means the declared engine speed in min-1 rpm at which the engine develops its rated maximum net power pursuant to Regulation No. 85 or, where the rated maximum net power is reached at several engine speeds, the highest one of those speeds. 2.10. “Power to Mass Ratio index PMR“ means a numerical quantity see Annex 3, paragraph 3.1.2.1.1. with no dimension used for the calculation of acceleration. 2.11. “Reference point“ means one of the following points 2.11.1. In the case of vehicles of categories M1, N1 and M2 3,500kg technical permissible maximum laden mass, M3, N2, N3 a For front-engine vehicles, the front end of the vehicle; b For all other vehicles, the border of the engine closest to the front of the vehicle; 2.12. “Engine“ means the power source without detachable accessories. Power source includes in this context all sources of motive power; for example, electric or hydraulic power sources used alone or in combination with other power sources. 2.13. “Target acceleration“ means acceleration at a partial throttle condition in urban traffic and is derived from statistical investigations. 2.14. “Reference acceleration“ means the required acceleration during the acceleration test on the test track. 2.15. “Gear ratio weighting factor k“ means a dimensionless numerical quantity used to combine the test results of two gear ratios for the acceleration test and the constant speed test. 2.16. “Partial power factor kp“ means a numerical quantity with no dimension used for the weighted combination of the test results of the acceleration test and the constant speed test for vehicles. E/ECE/324/Rev.1/Add.50/Rev.3 E/ECE/TRANS/505/Rev.1/Add.50/Rev.3 7 2.17. “Pre-acceleration“ means application of acceleration control device prior to AA for the purpose of achieving stable acceleration between AA and BB as referred to in Figure 1 of Appendix 1 to Annex 3. 2.18. “Locked gear ratios“ means the control of transmission such that the transmission gear cannot change during a test. 2.19. “Silencing system“ means a complete set of components necessary for limiting the sound produced by an engine, its intake and its exhaust the exhaust manifolds, the catalysts and emission after-treatment devices are not considered part of the silencing system; these parts belong to the engine. 2.20. “Design family of exhaust silencing system or exhaust silencing system components“ means a group of silencing systems or components thereof in which all of the following characteristics are the same a The presence of net gas flow of the exhaust gases through the absorbing fibrous material when in contact with that material; b The type of the fibres; c Where applicable, binder material specifications; d Average fibre dimensions; e Minimum bulk material packing density in kg/m; f Maximum contact surface between the gas flow and the absorbing material. 2.21. “Exhaust silencing system of different types“ means silencing systems which significantly differ in respect of at least one of the following a Trade names or trademarks of their components; b The characteristics of the materials constituting their components, except for the coating of those components; c The shape or size of their components; d The operating principles of at least one of their components; e The assembly of their components; f The number of exhaust silencing systems or components. 2.22. “Replacement silencing system“ means any part of the silencing system or its components intended for use on a vehicle, other than a part of the type fitted to this vehicle when submitted for type-approval pursuant to this Regulation. 2.23. “R-point“ means R-point as defined in paragraph 2.4. of Annex 1 to the Consolidated Resolution on the Construction of Vehicles R.E.3.. E/ECE/324/Rev.1/Add.50/Rev.3 E/ECE/TRANS/505/Rev.1/Add.50/Rev.3 8 2.24. Table of symbols Symbol Unit Annex Paragraph Explanation mro kg Annex 3 2.2.1. mass in running order; value to be reported and used for calculations to a precision of 10 kg mt kg Annex 3 2.2.1. test mass of the vehicle; value to be reported and used for calculations to a precision of 10 kg mtarget kg Annex 3 2.2.1. target mass of the vehicle mxload kg Annex 3 2.2.1. extra loading mfa load unladen kg Annex 3 2.2.1. front axle load in unladen condition mra load unladen kg Annex 3 2.2.1. rear axle load in unladen condition munladen kg Annex 3 2.2.1. unladen vehicle mass mac ra max kg Annex 3 2.2.1. Technically permissible maximum laden mass allowed for the rear axle as declared by the manufacturer md kg Annex 3 2.2.1. mass of driver mchassis M2M3 kg Annex 3 2.2.1. mass of the incomplete vehicle M2 or M3 mxload M2M3 kg Annex 3 2.2.1. extra load to be added to the incomplete vehicle M2 or M3 to reach the mass of the vehicle in running order as chosen by the manufacturer mfa load laden kg Annex 3 2.2.7.2. front axle load in laden condition mra load laden kg Annex 3 2.2.7.2. rear axle load in laden condition AA Annex 3 3.1.1. line perpendicular to vehicle travel which indicates beginning of zone in which to record sound pressure level during test BB Annex 3 3.1.1. line perpendicular to vehicle travel which indicates end of zone in which to record sound pressure level during test CC Annex 3 3.1.1. line of vehicle travel through test surface defined in ISO 10844 PP Annex 3 3.1.1. line perpendicular to vehicle travel which indicates location of microphones vtest km/h Annex 3 3.1.2.1. vehicle test speed E/ECE/324/Rev.1/Add.50/Rev.3 E/ECE/TRANS/505/Rev.1/Add.50/Rev.3 9 Symbol Unit Annex Paragraph Explanation PMR Annex 3 3.1.2.1.1. power-to-mass ratio index to be used for calculations; value to be reported and used for calculations to the first decimal place Pn kW Annex 3 3.1.2.1.1. rated total engine net power l m Annex 3 3.1.2.1.2. reference length; value to be reported and used for calculations to a precision of 0.01 m 1 cm lveh m Annex 3 3.1.2.1.2. length of vehicle; value to be reported and used for calculations to a precision of 0.01 m 1 cm vAA km/h Annex 3 3.1.2.1.2. vehicle velocity when reference point passes line AA see 5.1. for definition of reference point; value to be reported and used for calculations to the first decimal place vBB km/h Annex 3 3.1.2.1.2. vehicle velocity when reference point or rear of vehicle passes line BB see 5.1. for definition of reference point; value to be reported and used for calculations to the first decimal place vPP km/h Annex 3 3.1.2.1.2. vehicle velocity when reference point passes line PP see 5.1. for definition of reference point; value to be reported and used for calculations to the first decimal place awot test m/s2 Annex 3 3.1.2.1.2.1. acceleration at wide-open throttle from AA to BB; value to be reported and used for calculations to the second decimal place awot test,i m/s2 Annex 3 3.1.2.1.2.1. acceleration at wide-open throttle achieved in a particular gear i; value to be reported and used for calculations to the second decimal place lpa m Annex 3 3.1.2.1.2.1. point of depressing the accelerator before line AA; value to be reported in full meter awot test, PP-BB m/s2 Annex 3 3.1.2.1.2.2. acceleration at wide-open throttle from PP to BB; value to be reported and used for calculations to the second decimal place E/ECE/324/Rev.1/Add.50/Rev.3 E/ECE/TRANS/505/Rev.1/Add.50/Rev.3 10 Symbol Unit Annex Paragraph Explanation aurban m/s2 Annex 3 3.1.2.1.2.3. target acceleration representing urban traffic acceleration; value to be reported and used for calculations to the second decimal place awot ref m/s2 Annex 3 3.1.2.1.2.4. reference acce

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