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Light Vehicle Exterior Sound Level Standards Committee Manufacturing processes Engine cooling systems Maintenance and Aftermarket

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Standard

Engine Sound Level Measurement Procedure
2014-05-16
CURRENT
J1074_201405
This SAE Recommended Practice sets forth the equipment, environment, and test procedures to be used in measuring sound levels of engines. The purpose is to provide a uniform method of measuring the maximum acoustical radiation from the exterior surfaces of an engine under representative engine operating conditions. The measured sound levels will be useful in development of engines, comparison of engines, and installation of engines in various applications. The correlation of the measured engine sound levels to the various application sound levels will have to be developed.
Standard

Engine Sound Level Measurement Procedure
2000-02-07
HISTORICAL
J1074_200002
This SAE Recommended Practice sets forth the equipment, environment, and test procedures to be used in measuring sound levels of engines. The purpose is to provide a uniform method of measuring the maximum acoustical radiation from the exterior surfaces of an engine under representative engine operating conditions. The measured sound levels will be useful in development of engines, comparison of engines, and installation of engines in various applications. The correlation of the measured engine sound levels to the various application sound levels will have to be developed.
Standard

Sound Level of Highway Truck Tires
2014-05-16
CURRENT
J57_201405
This procedure provides for the measurement of the sound generated by a test tire, mounted on a single-axle trailer, operated at multiple speeds.
Standard

QUALIFYING A SOUND DATA ACQUISITION SYSTEM
1972-07-01
HISTORICAL
J184_197207
The scope includes determination of frequency response characteristics for the entire measurement system except the microphone. However, the procedure described herein prescribes inclusion of the manufacturer’s frequency response calibration data for the microphone in order to determine if the overall system is within required tolerances. The scope also includes determination of certain dynamic performance characteristics of the sound level indication devices. The scope of this document does not encompass qualifying components for harmonic distortion, signal-to-noise ratio, tape recorder flutter and wow, etc. The references listed in section 6 should be consulted for general performance requirements and precautions regarding instrumentation for acoustical measurements.
Standard

Measurement of Light Vehicle Stationary Exhaust System Sound Level Engine Speed Sweep Method
2021-10-28
HISTORICAL
J1492_202110
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 sound level over a range of engine speeds. This document applies only to road vehicles equipped with an internal combustion engine. 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.
Standard

MEASUREMENT OF LIGHT VEHICLE STATIONARY EXHAUST SYSTEM SOUND LEVEL ENGINE SPEED SWEEP METHOD
1992-03-01
HISTORICAL
J1492_199203
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 sound level over a range of engine speeds. This sound level measurement procedure has been developed for use in engineering evaluation of the sound level performance of passenger car and light truck exhaust systems. It provides the means for detecting exhaust system resonances with the potential to affect both exterior and interior sound quality. This document incorporates certain provisions of ISO 5130-1982-02-15, for measuring the sound level of exhaust systems. (See Appendix A.)
Standard

Measurement of Light Vehicle Stationary Exhaust System Sound Level Engine Speed Sweep Method
1998-05-01
HISTORICAL
J1492_199805
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 sound level over a range of engine speeds. This sound level measurement procedure has been developed for use in engineering evaluation of the sound level performance of passenger car and light truck exhaust systems. It provides the means for detecting exhaust system resonances with the potential to affect both exterior and interior sound quality. This document incorporates certain provisions of ISO 5130-1982-02-15, for measuring the sound level of exhaust systems. (See Appendix A.)
Standard

Measurement of Light Vehicle Exhaust Sound Level Under Stationary Conditions
1998-05-01
HISTORICAL
J1169_199805
This SAE Standard establishes the test procedure, environment, and instrumentation to be used for measuring the exhaust sound level for 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 vehicle in-service sound level regulations and enforcement measurement procedures. It is directed at the assessment of vehicle exhaust noise and is not intended to determine maximum vehicle sound levels. (See Appendix A.)
Standard

MEASUREMENT OF LIGHT VEHICLE EXHAUST SOUND LEVEL UNDER STATIONARY CONDITIONS
1992-03-01
HISTORICAL
J1169_199203
This SAE Standard establishes the test procedure, environment, and instrumentation to be used for measuring the exhaust sound level for 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 vehicle in-service sound level regulations and enforcement measurement procedures. It is directed at the assessment of vehicle exhaust noise and is not intended to determine maximum vehicle sound levels. (See Appendix A.)
Standard

MEASUREMENT OF LIGHT VEHICLE EXHAUST SOUND LEVEL UNDER STATIONARY CONDITIONS
1977-01-01
HISTORICAL
J1169_197701
This SAE Recommended Practice establishes the test procedure, environment, and instrumentation to be used for measuring the exhaust sound level for passenger cars and light trucks under stationary conditions. This sound level measurement procedure has been developed as a guide for governmental agencies establishing vehicle in-service sound level limitations and enforcement measurement procedures. It is directed at the assessment of vehicle exhaust noise and is not designed to determine maximum vehicle sound levels.
Standard

MEASUREMENT OF LIGHT VEHICLE EXHAUST SOUND LEVEL UNDER STATIONARY CONDITIONS
1987-02-01
HISTORICAL
J1169_198702
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. 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.
Standard

MEASUREMENT OF LIGHT VEHICLE EXHAUST SOUND LEVEL UNDER STATIONARY CONDITIONS
1985-09-01
HISTORICAL
J1169_198509
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. 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.
Standard

Vehicular Traffic Sound Signaling Devices (Horns)
2007-12-18
CURRENT
J377_200712
This SAE Standard establishes the minimum operational life, environmental requirements, and sound level output for electrically driven Vehicular Traffic Sound Signalling Devices (hereinafter referred to as Horns) on new automotive vehicles. Test equipment, environment, and procedures are specified.
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