# Commission Delegated Regulation (EU) 2017/654 of 19 December 2016 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, Division 2.1.6.1: Air and fuel measurement method

Extent: E+W+S+N.I.

The method involves measurement of the air flow and the fuel flow with suitable flowmeters. The instantaneous exhaust gas flow qm ew, i [kg/s] shall be calculated by means of equation (7-15):
qm ew, i = qm aw, i + qm f, i
(7-15)
where:
qm aw, i instantaneous intake air mass flow rate [kg/s]
qm f, i instantaneous fuel mass flow rate [kg/s]

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Source: https://www.legislation.gov.uk/eur/2017/654/annex/VII/division/2/division/2.1/division/2.1.6/division/2.1.6.1 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-654/annex-VII/division-2/division-2.1/division-2.1.6/division-2.1.6.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.