Division 7.3.3 Vehicle placement on the dynamometerF1

The tested vehicle shall be placed on the chassis dynamometer in a straight ahead position and restrained in a safe manner. In the case that a single roller chassis dynamometer is used, the centre of the tyre's contact patch on the roller shall be within ± 25 mm or ± 2 per cent of the roller diameter, whichever is smaller, from the top of the roller.

If the torque meter method is used, the tyre pressure shall be adjusted such that the dynamic radius is within 0,5 per cent of the dynamic radius r_j calculated using the equations in paragraph 4.4.3.1. at the 80 km/h reference speed point. The dynamic radius on the chassis dynamometer shall be calculated in accordance with the procedure described in paragraph 4.4.3.1.

If this adjustment is outside the range defined in paragraph 7.3.1., the torque meter method shall not apply.

7.3.3.1Division 7.3.3.1

Annotations

Textual amendments

F1: Substituted by Commission Regulation (EU) 2018/1832 of 5 November 2018 amending Directive 2007/46/EC of the European Parliament and of the Council, Commission Regulation (EC) No 692/2008 and Commission Regulation (EU) 2017/1151 for the purpose of improving the emission type approval tests and procedures for light passenger and commercial vehicles, including those for in-service conformity and real-driving emissions and introducing devices for monitoring the consumption of fuel and electric energy (Text with EEA relevance).