Division 2.1.1 Discrete-mode NRSC tests

United Kingdom

The emission rate of a gaseous emission q_m _gas, _i [g/h] for each mode i of the steady state test shall be calculated by multiplying the concentration of the gaseous emission with its respective flow, as follows:

q_{m gas, i} = k_{h} \times k \times u_{gas} \times q_{m ew, i} \times c_{gas, i} \times 3600

(7-1)

where:

1 for c_gasr,w,i in [ppm] and k = 10 000 for c_gasr,w,i in [% vol]

k _h

NO_x correction factor [-], for NO_x emission calculation (see point 2.1.4)

u _gas

component specific factor or ratio between densities of gas component and exhaust gas [-]

q_m _ew, _i

exhaust gas mass flow rate in mode i on a wet basis [kg/s]

c _gas, _i

emission concentration in the raw exhaust gas in mode i, on a wet basis [ppm] or [% vol]

Annotations

Textual amendments

F1: Substituted by Commission Delegated Regulation (EU) 2018/989 of 18 May 2018 amending and correcting Delegated Regulation (EU) 2017/654 supplementing Regulation (EU) 2016/1628 of the European Parliament and of the Council with regard to technical and general requirements relating to emission limits and type-approval for internal combustion engines for non-road mobile machinery (Text with EEA relevance).