31.715

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31.715, also known as the Motor Vehicle Heaters Standard, is an American standard applicable for all motor vehicles with an internal combustion engine. The purpose of this standard is to control the emission of hazardous contaminants from the exhaust of these vehicles.

The application field of 31.715 covers all motor vehicles with a spark ignition engine up to 14,500 lbs, and gas or diesel fueled engine up to 8,500 lbs. In addition to these motor vehicles, this standard also applies to motorcycle engines, and vehicles used for agricultural purposes. This standard also processes vehicles used for on-road or off-road transportation.

The working principle of 31.715 is based on the control of volatile organic compounds (VOC) which are released during the combustion process. The standard establishes emission limits for these compounds, as well as performance requirements for motor vehicle heaters. This includes controls on VOC emissions, certificates of conformity, requirements for communication to the public of emissions and safety information, and emission labeling requirements.

In order to ensure compliance with this standard, all vehicle manufacturers must carry out tests of the motor vehicle heaters and check that the emissions are within the prescribed limits. Manufacturers must also ensure that the vehicle meets the requirements for emissions, performance, and safety. The standard also provides for the testing of other components in addition to the motor vehicle heaters.

Furthermore, the standard also provides for the certification of vehicles that meet the requirements established by the standard. In order to obtain certification, the manufacturer must submit a certification application to the American National Standards Institute (ANSI). This certification is then valid for two years, after which a renewal has to be requested.

In conclusion, 31.715 is an American standard applicable for all motor vehicles with an internal combustion engine. The purpose of the standard is to control the emission of hazardous contaminants from the exhaust of these vehicles. The application field of the standard covers all motor vehicles, and the working principle is based on the control of volatile organic compounds released during the combustion process. The standard also provides for the certification of vehicles that meet the established requirements.

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