16.1.2023
EN
Official Journal of the European Union
L 14/365
Figure 1 Illustration of atmospheric pressure and temperature conditions
7.
Off-cycle laboratory testing and vehicle testing of engines at type approval The off-cycle laboratory test requirements shall not apply for the type approval of positive ignition engine under this Regulation.
7.1.
World-harmonized Not-To-Exceed control area The WNTE control area consists of the engine speed and load points defined in paragraphs 7.1.1. through 7.1.6.
Figure 2 is an example illustration of the WNTE control area.
7.1.1.
Engine speed range The WNTE control area shall include all operating speeds between the 30th percentile cumulative speed distribution over the WHTC test cycle, including idle, (n30) and the highest speed where 70 per cent of the maximum power occurs (nhi).
Figure 3 is an example of the WNTE cumulative speed frequency distribution for a specific engine.
7.1.2.
Engine torque range The WNTE control area shall include all engine load points with a torque value greater than or equal to 30 per cent of the maximum torque value produced by the engine.
7.1.3.
Engine power range Notwithstanding the provisions of paragraphs 7.1.1. and 7.1.2., speed and load points below 30 per cent of the maximum power value produced by the engine shall be excluded from the WNTE control area for all emissions.
7.1.4.
Application of engine family concept In principal, any engine within a family with a unique torque/power curve will have its individual WNTE control area.
For in-use testing, the individual WNTE control area of the respective engine shall apply.
For type approval (certification) testing under the engine family concept of the WHDC gtr the manufacturer may optionally apply a single WNTE control area for the engine family under the following provisions: