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National Stationary Exhaust Noise Test Procedures For In Service Motor Vehicles
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Book Synopsis National Stationary Exhaust Noise Test Procedures for In-service Motor Vehicles by : Australia. National Road Transport Commission
Download or read book National Stationary Exhaust Noise Test Procedures for In-service Motor Vehicles written by Australia. National Road Transport Commission and published by . This book was released on 2000 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Light Vehicle Stationary Exhaust System Sound Level Engine Speed Sweep Method by : Light Vehicle Exterior Sound Level Standards Committee
Download or read book Measurement of Light Vehicle Stationary Exhaust System Sound Level Engine Speed Sweep Method written by Light Vehicle Exterior Sound Level Standards Committee and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SAE Recommended Practice establishes the test procedure, environment, and instrumentation to be used for measuring the exterior exhaust sound level for passenger cars, multipurpose vehicles, and light trucks under stationary conditions providing a continuous measure of exhaust system or simulated exhaust sound level over a range of engine speeds or simulated engine speeds.This document applies only to road vehicles equipped with an internal combustion engine or with an external sound system.The method is designed to meet the requirements of simplicity as far as they are consistent with reproducibility of results under the operating conditions of the vehicle.It is within the scope of this document to measure the stationary A-weighted sound pressure level during: Measurements at the manufacturing stage Measurements at official testing stations Measurements at roadside testingIt does neither specify a method to check the exhaust sound pressure level when the engine is operated at realistic load nor a method to check the exhaust sound pressure levels against a general noise limit for categories of road vehicles. It provides the means for detecting exhaust system resonances with the potential to affect both exterior and interior sound quality.SAE J2805 provides methods to assess vehicle noise emission consistent with in-use vehicle noise emissions at realistic vehicle loads and speeds.This document incorporates certain provisions of ISO 5130:2019 for measuring the sound level of exhaust systems (see Appendix A). SAE J1492 is updated to include testing of all modes and to clarify procedure applies to all propulsion technologies.This SAE Recommended Practice is designed to check vehicle exhaust noise or simulated exhaust noise against a reference value. However, it has been used by some jurisdictions to support checking against a fixed limit value. This version of SAE J1492 incorporates provisions where the standard may be used by authorities to check against a fixed limit. This recommended practice also incorporates provisions for additional exhaust system configurations and the use of vehicles with driver selectable modes.
Book Synopsis Measurement of Light Vehicle Exhaust Sound Level Under Stationary Conditions by : Light Vehicle Exterior Sound Level Standards Committee
Download or read book Measurement of Light Vehicle Exhaust Sound Level Under Stationary Conditions written by Light Vehicle Exterior Sound Level Standards Committee and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SAE Standard establishes the test procedure, environment, and instrumentation to be used for measuring the exhaust sound level of passenger cars, multipurpose vehicles, and light trucks under stationary conditions. Measurements are taken under steady-state conditions. In this respect, this procedure differs from ISO 5130 which includes measurements under the dynamic conditions of an engine deceleration. This sound level measurement procedure has been developed as a guide for governmental agencies establishing in-service sound level limitations and enforcement measurement procedures. It is directed at the assessment of vehicle exhaust noise and is not intended to determine maximum vehicle sound levels.Technology changes have occurred that make the SAE J1169 procedure inadequate. SAE J1169 is a legacy test that specifies maximum rated engine speed (MRES) as the test condition. Many modern engines will not allow MRES in neutral and/or have fuel cut-off software that prevents the engine from reaching this target. Additionally, the measurement technology of slow exponential time-averaging characteristic is outdated as compared to the fast exponential time averaging characteristic used in SAE J1492. For these and other reasons, J1169 will be cancelled in favor of J1492, which provides a continuous measure of exhaust system sound level over a range of engine speeds.
Book Synopsis Noise Test Development and Validation Program for Light Vehicles by : United States. Office of Noise Abatement and Control
Download or read book Noise Test Development and Validation Program for Light Vehicles written by United States. Office of Noise Abatement and Control and published by . This book was released on 1977 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Diagnostic Analysis and Test Equipment for Small Automotive Repair Establishments by : United States. National Highway Traffic Safety Administration
Download or read book Evaluation of Diagnostic Analysis and Test Equipment for Small Automotive Repair Establishments written by United States. National Highway Traffic Safety Administration and published by . This book was released on 1978 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Exhaust Sound Levels of Stationary Motorcycles by : Motorcycle Technical Steering Committee
Download or read book Measurement of Exhaust Sound Levels of Stationary Motorcycles written by Motorcycle Technical Steering Committee and published by . This book was released on 1998 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SAE Standard establishes the test procedure, environment, and instrumentation for determining the sound levels of motorcycles under stationary conditions. This test will measure primarily exhaust noise and does not represent the optimum procedure for evaluating total vehicle noise. For this purpose, SAE J331 or SAE J47 is recommended.
Book Synopsis Noise Emission Measurements for Regulatory Purposes by : United States. National Bureau of Standards
Download or read book Noise Emission Measurements for Regulatory Purposes written by United States. National Bureau of Standards and published by . This book was released on 1977 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Standards on Noise Measurements, Rating Schemes, and Definitions by : Jack M. Fath
Download or read book Standards on Noise Measurements, Rating Schemes, and Definitions written by Jack M. Fath and published by . This book was released on 1973 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fundamentals of Noise: Measurement, Rating Schemes, and Standards by : United States. National Bureau of Standards
Download or read book Fundamentals of Noise: Measurement, Rating Schemes, and Standards written by United States. National Bureau of Standards and published by . This book was released on 1972 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Examination of Vehicle Noise Test Procedures by : G Watts
Download or read book An Examination of Vehicle Noise Test Procedures written by G Watts and published by . This book was released on 2005 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Canada. Transport Canada. Road and Motor Vehicle Traffic Safety Branch. Automotive Safety Engineering Section Publisher : ISBN 13 : Total Pages : pages Book Rating :4.:/5 (617 download)
Book Synopsis Motor Vehicle Safety Test Methods, Chapter 1, Section 1106 by : Canada. Transport Canada. Road and Motor Vehicle Traffic Safety Branch. Automotive Safety Engineering Section
Download or read book Motor Vehicle Safety Test Methods, Chapter 1, Section 1106 written by Canada. Transport Canada. Road and Motor Vehicle Traffic Safety Branch. Automotive Safety Engineering Section and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Code of Federal Regulations written by and published by . This book was released on 1987 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt: Special edition of the Federal Register, containing a codification of documents of general applicability and future effect ... with ancillaries.
Book Synopsis HRIS Abstracts by : National Research Council (U.S.). Highway Research Board
Download or read book HRIS Abstracts written by National Research Council (U.S.). Highway Research Board and published by . This book was released on 1987 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Federal Register written by and published by . This book was released on 1978-03 with total page 1680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Measurement of Noise Emitted by Accelerating Highway Vehicles by : Light Vehicle Exterior Sound Level Standards Committee
Download or read book Measurement of Noise Emitted by Accelerating Highway Vehicles written by Light Vehicle Exterior Sound Level Standards Committee and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SAE Standard is equivalent to ISO Standard 362 - 1997 except for the differences detailed in Appendix A, and includes the modifications adopted by WP 29 in ECE R51 Revision 1 and EEC 92/97 and EEC 96/20.This document specifies an engineering method for measuring the noise emitted by accelerating highway vehicles of all types (except motorcycles) in intermediate gears with full utilization of the available engine power.The method is designed to meet the requirements of simplicity and reproducibility of results under realistic vehicle operating conditions.Measurements relate to operating conditions of the vehicle which give the highest noise level consistent with urban driving and which lead to reproducible noise emissions. Therefore, an acceleration test at full throttle from a stated engine or vehicle speed is specified.The test method calls for an acoustical environment which can only be obtained in an extensive open space. Such conditions can usually be provided for: aMeasurements at the manufacturing stage bMeasurements at official testing stationsMeasurements must be carried out in an acoustical environment which fulfill the requirements stated in this document. It should be noted that spot checking of vehicles chosen at random can rarely be made in an ideal acoustical environment. If measurements have to be carried out on the road in an acoustical environment which does not fulfill the requirements stated in this document, it should be recognized that the results obtained may deviate appreciably from the results obtained using the specified conditions.The results obtained by this method give an objective measure of the noise emitted under prescribed conditions of test. However, it is necessary to consider the fact that the subjective appraisal of the annoyance of different classes of motor vehicles is not simply related to the indications of a sound level meter. The motorcycles are covered in other SAE documents that prescribe an operating mode that is more representative of actual use. J1470 has been reaffirmed to comply with the SAE five year review policy.
Book Synopsis Measurement of Noise Emitted by Accelerating Road Vehicles by : Light Vehicle Exterior Sound Level Standards Committee
Download or read book Measurement of Noise Emitted by Accelerating Road Vehicles written by Light Vehicle Exterior Sound Level Standards Committee and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SAE Standard is equivalent to ISO 362-1:2007 and specifies an engineering method for measuring the noise emitted by road vehicles under typical urban traffic conditions. The specifications are intended to reproduce the level of noise which is generated by the principal noise sources during normal driving in urban traffic. The method is designed to meet the requirements of simplicity as far as they are consistent with reproducibility of results under the operating conditions of the vehicle.The test method requires an acoustical environment which is only obtained in an extensive open space. Such conditions are usually provided for during: measurements of vehicles for regulatory certification measurements at the manufacturing stage measurements at official testing stationsThe results obtained by this method give an objective measure of the noise emitted under the specified conditions of test. It is necessary to consider the fact that the subjective appraisal of the noise annoyance of different classes of motor vehicles is not simply related to the indications of a sound measurement system. As annoyance is strongly related to personal human perception, physiological human condition, culture, environmental condition there is a large variation and therefore not useful as a parameter to describe a specific vehicle condition.Spot checks of vehicles chosen at random are rarely made in an ideal acoustical environment. If measurements are carried out on the road in an acoustical environment which does not fulfill the requirements stated in this document, the results obtained may deviate appreciably from the results obtained using the specified conditions. This Surface Vehicle Standard was developed to provide a method to measure the noise emission of road vehicles consistent with actual in-use urban vehicle noise emission. This document was further developed to provide a performance based and technology neutral test standard to reflect the development of engine and propulsion technologies that cannot be correctly tested under existing SAE Standards.
Book Synopsis National Bureau of Standards Miscellaneous Publication by :
Download or read book National Bureau of Standards Miscellaneous Publication written by and published by . This book was released on 1945 with total page 1326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
