# 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 2.3: Control area for engines tested on NRSC cycle E3

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

These engines are mainly operated slightly above and below a fixed pitch propeller curve. The control area is related to the propeller curve and has exponents of mathematical equations defining the boundaries of the control area. The control area is defined as follows:
Lower speed limit 0,7 × n 100 %
Upper boundary curve %power = 100 × (%speed/90)3,5;
Lower boundary curve %power = 70 × (%speed/100)2,5;
Upper power limit Full load power curve
Upper speed limit Maximum speed permitted by governor
where:
%power is % of maximum net power;
%speed is % of n 100 %
n 100 % is the 100 % speed for the corresponding test cycle.
Figure 5.4
Control area for engines tested on NRSC cycle E3

---
Source: https://www.legislation.gov.uk/eur/2017/654/annex/V/division/2/division/2.3 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-654/annex-V/division-2/division-2.3
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.