Emission data vehicle selection.

§ 86.1828-01 Emission data vehicle selection.

(a) FTP and SFTP testing. Within each test group, the vehicle configuration shall be selected which is expected to be worst-case for exhaust emission compliance on candidate in-use vehicles, considering all exhaust emission constituents, all exhaust test procedures, and the potential impact of air conditioning on test results. The selected vehicle will include an air conditioning engine code unless the worst-case vehicle configuration selected is not available with air conditioning. This vehicle configuration will be used as the EDV calibration.

(b) Evaporative/Refueling testing. Vehicles of each evaporative/refueling family will be divided into evaporative/refueling emission control systems.

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