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 (c. 654)

ANNEX IV U.K. Requirements with regard to emission control strategies, NO_x control measures and particulate control measures

2. Technical requirements relating to emission control strategies U.K.

2.1. This section 2 shall apply for electronically controlled engines of categories NRE, NRG, IWP, IWA, RLL and RLR, complying with ‘Stage V’ emission limits set out in Annex II to Regulation (EU) 2016/1628 and using electronic control to determine both the quantity and timing of injecting fuel or using electronic control to activate, de-activate or modulate the emission control system used to reduce NO_x. U.K.

2.2. Requirements for base emission control strategy U.K.

2.2.1. The base emission control strategy shall be designed as to enable the engine, in normal use, to comply with the provisions of this Regulation. Normal use is not restricted to the control conditions as specified in point 2.4. U.K.

2.2.2. Base emission control strategies are, but not limited to, maps or algorithms for controlling: U.K.

(a)

timing of fuel injection or ignition (engine timing);

(b)

exhaust gas recirculation (EGR);

(c)

SCR catalyst reagent dosing.

2.2.3. Any base emission control strategy that can distinguish engine operation between a standardised EU type-approval test and other operating conditions and subsequently reduce the level of emission control when not operating under conditions substantially included in the EU type-approval procedure is prohibited. U.K.

[F1 2.2.3.1. Notwithstanding point 2.2.3, in the case of engine (sub-)categories that are not subject to non-road transient test cycles for EU type-approval purposes, the base emission control strategy may identify when transient operating conditions occur and apply the corresponding emission control strategy. In this case, this emission control strategy shall be included in the overview of the base emission control strategy required by point 1.4 of Annex I to Implementing Regulation (EU) 2017/656 and in the confidential information on emission control strategy set out in Appendix 2 to that Annex. U.K.

Textual Amendments

F1 Inserted 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).

2.2.4. The manufacturer shall demonstrate to the technical service at the time of the EU type-approval test that the operation of the base emission control strategy complies with the provisions of this section on the basis of the documentation referred to in point 2.6.] U.K.

2.3. Requirements for auxiliary emission control strategy U.K.

[F2 2.3.1. An auxiliary emission control strategy may be activated by an engine or a non-road mobile machinery, provided that the auxiliary emission control strategy:] U.K.

2.3.1.1.

does not permanently reduce the effectiveness of the emission control system;

2.3.1.2.

operates only outside the control conditions specified in points 2.4.1, 2.4.2 or 2.4.3 for the purposes defined in point 2.3.5 and only as long as is needed for those purposes, except as permitted by points 2.3.1.3, 2.3.2 and 2.3.4;

2.3.1.3.

is activated only exceptionally within the control conditions in points 2.4.1, 2.4.2 or 2.4.3, respectively, has been demonstrated to be necessary for the purposes identified in point 2.3.5 has been approved by the approval authority, and is not activated for longer than is needed for those purposes;

2.3.1.4.

ensures a level of performance of the emission control system that is as close as possible to that provided by the base emission control strategy.

Textual Amendments

F2 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).

2.3.2. Where the auxiliary emission control strategy is activated during the EU type-approval test, activation shall not be limited to occur outside the control conditions set out in point 2.4, and the purpose shall not be limited to the criteria set out in point 2.3.5. U.K.

2.3.3. Where the auxiliary emission control strategy is not activated during the EU type-approval test, it must be demonstrated that the auxiliary emission control strategy is active only for as long as required for the purposes set out in point 2.3.5. U.K.

2.3.4. Cold temperature operation U.K.

An auxiliary emission control strategy may be activated on an engine equipped with exhaust gas recirculation (EGR) irrespective of the control conditions in point 2.4 if the ambient temperature is below 275 K (2 °C) and one of the two following criteria is met:

(a)

intake manifold temperature is less than or equal to the temperature defined by the following equation: IMT_c = P_IM/15,75 + 304,4, where: IMT_c is the calculated intake manifold temperature, K and P_IM is the absolute intake manifold pressure in kPa;

(b)

engine coolant temperature is less than or equal to the temperature defined by the following equation: ECT_c = P_IM/14,004 + 325,8, where: ECT_c is the calculated engine coolant temperature, K and P_IM is the absolute intake manifold pressure, kPa.

2.3.5. Except as permitted by point 2.3.2, an auxiliary emission control strategy may solely be activated for the following purposes: U.K.

(a)

by on-board signals, for protecting the engine (including air-handling device protection) and/or non-road mobile machinery into which the engine is installed from damage;

(b)

for operational safety reasons;

(c)

for prevention of excessive emissions, during cold start or warming-up, during shut-down;

(d)

if used to trade-off the control of one regulated pollutant under specific ambient or operating conditions, for maintaining control of all other regulated pollutants, within the emission limit values that are appropriate for the engine concerned. The purpose is to compensate for naturally occurring phenomena in a manner that provides acceptable control of all emission constituents.

2.3.6. The manufacturer shall demonstrate to the technical service at the time of the EU type-approval test that the operation of any auxiliary emission control strategy complies with the provisions of this section. The demonstration shall consist of an evaluation of the documentation referred to in point 2.6. U.K.

2.3.7. Any operation of an auxiliary emission control strategy non-compliant with points 2.3.1 to 2.3.5 is prohibited. U.K.

2.4. Control conditions U.K.

The control conditions specify an altitude, ambient temperature and engine coolant range that determines whether auxiliary emission control strategies may generally or only exceptionally be activated in accordance with point 2.3.

The control conditions specify an atmospheric pressure which is measured as absolute atmospheric static pressure (wet or dry) (‘Atmospheric pressure’)

2.4.1. Control conditions for engines of categories IWP and IWA: U.K.

(a)

an altitude not exceeding 500 metres (or equivalent atmospheric pressure of 95,5 kPa);

(b)

an ambient temperature within the range 275 K to 303 K (2 °C to 30 °C);

(c)

the engine coolant temperature above 343 K (70 °C).

2.4.2. Control conditions for engines of category RLL: U.K.

(a)

an altitude not exceeding 1 000 metres (or equivalent atmospheric pressure of 90 kPa);

(b)

an ambient temperature within the range 275 K to 303 K (2 °C to 30 °C);

(c)

the engine coolant temperature above 343 K (70 °C).

2.4.3. Control conditions for engines of categories NRE, NRG and RLR: U.K.

(a)

the atmospheric pressure greater than or equal to 82,5 kPa;

(b)

the ambient temperature within the following range:

• equal to or above 266 K (– 7 °C),

• less than or equal to the temperature determined by the following equation at the specified atmospheric pressure: T_c = – 0,4514 × (101,3 – P_b) + 311, where: T_c is the calculated ambient air temperature, K and P_b is the atmospheric pressure, kPa;

(c)

the engine coolant temperature above 343 K (70 °C).

2.5. Where the engine inlet air temperature sensor is being used to estimate ambient air temperature the nominal offset between the two measurement points shall be evaluated for an engine type or engine family. Where used, the measured intake air temperature shall be adjusted by an amount equal to the nominal offset to estimate ambient temperature for an installation using the specified engine type or engine family. U.K.

The evaluation of the offset shall be made using good engineering judgement based on technical elements (calculations, simulations, experimental results, data etc.) including:

(a)

the typical categories of non-road mobile machinery into which the engine type or engine family will be installed; and,

(b)

the installation instructions provided to the OEM by the manufacturer.

A copy of the evaluation shall be made available to the approval authority upon request.

2.6. Documentation requirements U.K.

[ F3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .]

Textual Amendments

F3 Deleted 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).

[F1 2.6.1. The manufacturer shall comply with the documentation requirements laid down in point 1.4 of Part A of Annex I to Implementing Regulation (EU) 2017/656 and Appendix 2 to that Annex. U.K.

2.6.2. The manufacturer shall ensure that all documents used for this purpose are marked with an identification number and date of issue. The manufacturer shall notify to the approval authority whenever the particulars recorded are changed. In this case, it shall issue, either a updated version of the documents concerned where the relevant pages are marked clearly showing the date of revision and the nature of the amendment, or alternatively, a new consolidated version accompanied by an index containing a detailed description and date of each amendment.] U.K.