ECE/TRANS/WP.29/2020/120 - Homepage | UNECE

Electrical power shall be supplied to the PEMS by an external power supply unit and not from a source that draws its energy either directly or indirectly from the engine of the test vehicle. The installation of the PEMS equipment shall be done in a way to minimise the influence on the vehicle’s emissions or performance or both to the greatest ... ................
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