ANNEX I U.K. Definition of engine sub-categories referred to in Article 4

Table I-1: Sub-categories of engine category NRE defined in point (1) of Article 4(1)

Category	Ignition type	Speed operation	Power range (kW)	Sub-category	Reference power
NRE	CI	variable	0 < P < 8	NRE-v-1	Maximum net power
	CI		8 ≤ P < 19	NRE-v-2
	CI		19 ≤ P < 37	NRE-v-3
	CI		37 ≤ P < 56	NRE-v-4
	all		56 ≤ P < 130	NRE-v-5
			130 ≤ P ≤ 560	NRE-v-6
			P > 560	NRE-v-7
	CI	constant	0 < P < 8	NRE-c-1	Rated net power
	CI		8 ≤ P < 19	NRE-c-2
	CI		19 ≤ P < 37	NRE-c-3
	CI		37 ≤ P < 56	NRE-c-4
	all		56 ≤ P < 130	NRE-c-5
			130 ≤ P ≤ 560	NRE-c-6
			P > 560	NRE-c-7

Table I-2: Sub-categories of engine category NRG defined in point (2) of Article 4(1)

Category	Ignition type	Speed operation	Power range (kW)	Sub-category	Reference power
NRG	all	variable	P > 560	NRG-v-1	Maximum net power
		constant	P > 560	NRG-c-1	Rated net power

Table I-3: Sub-categories of engine category NRSh defined in point (3) of Article 4(1)

Category	Ignition type	Speed operation	Power range (kW)	Swept volume (cm3)	Sub-category	Reference power
NRSh	SI	variable or constant	0 < P < 19	SV < 50	NRSh-v-1a	Maximum net power
				SV ≥ 50	NRSh-v-1b

Table I-4: Sub-categories of engine category NRS defined in point (4) of Article 4(1)

Category	Ignition type	Speed operation	Power range (kW)	Swept volume (cm3)	Sub-category	Reference power
NRS	SI	variable ≥ 3 600 rpm; or constant	0 < P < 19	80 ≤ SV < 225	NRS-vr-1a	Maximum net power
				SV ≥ 225	NRS-vr-1b
		variable < 3 600 rpm		80 ≤ SV < 225	NRS-vi-1a
				SV ≥ 225	NRS-vi-1b
		variable or constant	19 ≤ P < 30	SV ≤ 1 000	NRS-v-2a	Maximum net power
				SV > 1 000	NRS-v-2b
			30 ≤ P < 56	any	NRS-v-3	Maximum net power

For engines < 19 kW with SV < 80 cm³ in machinery other than hand-held machinery, engines of the category NRSh shall be used.

Table I-5: Sub-categories of engine category IWP defined in point (5) of Article 4(1)

Category	Ignition type	Speed operation	Power range (kW)	Sub-category	Reference power
IWP	all	variable	19 ≤ P < 75	IWP-v-1	Maximum net power
			75 ≤ P < 130	IWP-v-2
			130 ≤ P < 300	IWP-v-3
			P ≥ 300	IWP-v-4
		constant	19 ≤ P < 75	IWP-c-1	Rated net power
			75 ≤ P < 130	IWP-c-2
			130 ≤ P < 300	IWP-c-3
			P ≥ 300	IWP-c-4

Table I-6: Sub-categories of engine category IWA defined in point (6) of Article 4(1)

Category	Ignition type	Speed operation	Power range (kW)	Sub-category	Reference power
IWA	all	variable	19 ≤ P < 75	IWA-v-1	Maximum net power
			75 ≤ P < 130	IWA-v-2
			130 ≤ P < 300	IWA-v-3
			P ≥ 300	IWA-v-4
		constant	19 ≤ P < 75	IWA-c-1	Rated net power
			75 ≤ P < 130	IWA-c-2
			130 ≤ P < 300	IWA-c-3
			P ≥ 300	IWA-c-4

Table I-7: Sub-categories of engine category RLL defined in point (7) of Article 4(1)

Category	Ignition type	Speed operation	Power range (kW)	Sub-category	Reference power
RLL	all	variable	P > 0	RLL-v-1	Maximum net power
		constant	P > 0	RLL-c-1	Rated net power

Table I-8: Sub-categories of engine category RLR defined in point (8) of Article 4(1)

Category	Ignition type	Speed operation	Power range (kW)	Sub-category	Reference power
RLR	all	variable	P > 0	RLR-v-1	Maximum net power
		constant	P > 0	RLR-c-1	Rated net power

Table I-9: Sub-categories of engine category SMB defined in point (9) of Article 4(1)

Category	Ignition type	Speed operation	Power range (kW)	Sub-category	Reference power
SMB	SI	variable or constant	P > 0	SMB-v-1	Maximum net power

Table I-10: Sub-categories of engine category ATS defined in point (10) of Article 4(1)

Category	Ignition type	Speed operation	Power range (kW)	Sub-category	Reference power
ATS	SI	variable or constant	P > 0	ATS-v-1	Maximum net power