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Commission Delegated Regulation (EU) No 134/2014Show full title
Commission Delegated Regulation (EU) No 134/2014 of 16 December 2013 supplementing Regulation (EU) No 168/2013 of the European Parliament and of the Council with regard to environmental and propulsion unit performance requirements and amending Annex V thereof (Text with EEA relevance)
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2.2.Calibration of the load indicator at 80 km/h or of the load indicator referred to in point 1.1.3.1. for vehicles that cannot attain 80 km/h.
The following procedure shall be used for calibration of the load indicator to 80 km/h or the applicable load indicator referred to in point 1.1.3.1. for vehicles that cannot attain 80 km/h, as a function of the load absorbed (see also Figure Ap3-1):
2.2.1.Measure the rotational speed of the roller if this has not already been done. A fifth wheel, a revolution counter or some other method may be used.
2.2.2.Place the vehicle on the dynamometer or devise some other method for starting up the dynamometer.
2.2.3.Use the flywheel or any other system of inertia simulation for the particular inertia class to be used.
2.2.4.Bring the dynamometer to a vehicle speed of 80 km/h or to the reference vehicle speed referred to in point 1.1.3.1. for vehicles that cannot attain 80 km/h.
2.2.5.Note the load indicated Fi (N).
2.2.6.Bring the dynamometer to a speed of 90 km/h or to the respective reference vehicle speed referred to in to in point 1.1.3.1. plus 5 km/h for vehicles that cannot attain 80 km/h
2.2.7.Disconnect the device used to start up the dynamometer.
2.2.8.Note the time taken by the dynamometer to pass from a vehicle speed of 85 to 75 km/h, or for vehicles that cannot attain 80 km/h referred to in Table Ap8-1 of Appendix 8, note the time between vj + 5 km/h to vj– 5 km/h.
2.2.9.Set the power-absorption device at a different level.
2.2.10.The requirements of points 2.2.4. to 2.2.9. shall be repeated sufficiently often to cover the range of loads used.
2.2.11.Calculate the load absorbed using the formula:
Equation Ap3-2:
where:
F
=
load absorbed (N);
mi
=
equivalent inertia in kg (excluding the inertial effects of the free rear roller);
Δ v
=
vehicle speed deviation in m/s (10 km/h = 2,775 m/s);
Δ t
=
time taken by the roller to pass from 85 km/h to 75 km/h, or for vehicles that cannot attain 80 km/h from 35 – 25 km/h, respectively from 20 – 10 km/h, referred to in Table Ap 7-1 of Appendix 7.
2.2.12.Figure Ap3-2 shows the load indicated at 80 km/h in terms of load absorbed at 80 km/h.
2.2.13.The requirements laid down in points 2.2.3. to 2.2.12. shall be repeated for all inertia classes to be used.
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