{ "url": "https://openlegislation.uk/eu-regulation-2017-654/annex-VI/appendix-2", "json_url": "https://openlegislation.uk/eu-regulation-2017-654/annex-VI/appendix-2.json", "legislation": "eur/2017/654", "legislation_title": "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", "legislation_url": "https://openlegislation.uk/eu-regulation-2017-654", "path": "annex/VI/appendix/2", "kind": "appendix", "number": "2", "heading": null, "text": "Installation requirements for equipment and auxiliaries\nThe complete inlet system shall be fitted as provided for the intended application:\n(i) where there is a risk of an appreciable effect on the engine power;\n(ii) when the manufacturer requests that this should be done.\nIn other cases, an equivalent system may be used and a check should be made to ascertain that the intake pressure does not differ by more than 100 Pa from the upper limit specified by the manufacturer for a clean air filter.\nThe complete exhaust system shall be fitted as provided for the intended application:\n(i) where there is a risk of an appreciable effect on the engine power;\n(ii) when the manufacturer requests that this should be done.\nIn other cases, an equivalent system may be installed provided the pressure measured does not differ by more than 1 000 Pa from the upper limit specified by the manufacturer.\nIf an exhaust system brake is incorporated in the engine, the throttle valve shall be fixed in the fully open position.\nThe fuel feed pressure may be adjusted, if necessary, to reproduce the pressure existing in the particular engine application (particularly when a ‘fuel return’ system is used).\nThe cooling-liquid circulation shall be operated by the engine water pump only. Cooling of the liquid may be produced by an external circuit, such that the pressure loss of this circuit and the pressure at the pump inlet remain substantially the same as those of the engine cooling system.\nThe thermostat may be fixed in the fully open position.\nWhen the cooling fan or blower is fitted for the test, the power absorbed shall be added to the results, except for cooling fans of air cooled engines directly fitted on the crankshaft. The fan or blower power shall be determined at the speeds used for the test either by calculation from standard characteristics or by practical tests.\nCharge air-cooled engines shall be tested with charge air cooling, whether liquid — or air-cooled, but if the manufacturer prefers, a test bench system may replace the air cooler. In either case, the measurement of power at each speed shall be made with the maximum pressure drop and the minimum temperature drop of the engine air across the charge air cooler on the test bench system as those specified by the manufacturer.\nThe power for electrical or other starting systems shall be provided from the test bed.\nNumber\nEquipment and auxiliaries\nFitted for emission test\n1\nInlet system\nInlet manifold\nYes\nCrankcase emission control system\nYes\nAir flow meter\nYes\nAir filter\nYes\nInlet silencer\nYes\n2\nExhaust system\nExhaust after-treatment system\nYes\nExhaust manifold\nYes\nConnecting pipes\nYes\nSilencer\nYes\nTail pipe\nYes\nExhaust brake\nNo\nPressure charging device\nYes\n3\nFuel supply pump\nYes\n4\nFuel injection equipment\nPrefilter\nYes\nFilter\nYes\nPump\nYes\n5\nHigh-pressure pipe\nYes\nInjector\nYes\nElectronic control unit, sensors, etc.\nYes\nGovernor/control system\nYes\nAutomatic full-load stop for the control rack depending on atmospheric conditions\nYes\n6\nLiquid-cooling equipment\nRadiator\nNo\nFan\nNo\nFan cowl\nNo\nWater pump\nYes\nThermostat\nYes\n7\nAir cooling\nCowl\nNo\nFan or Blower\nNo\nTemperature-regulating device\nNo\n8\nPressure charging equipment\nCompressor driven either directly by the engine and/or by the exhaust system\nYes\nCharge air cooler\nYes\nCoolant pump or fan (engine-driven)\nNo\nCoolant flow control device\nYes\n9\nAuxiliary test-bed fan\nYes, if necessary\n10\nAnti-pollution device\nYes\n11\nStarting equipment\nYes or test bed equipment\n12\nLubricating oil pump\nYes\n13\nCertain auxiliaries whose definition is linked with the operation of the non-road mobile machinery and which may be mounted on the engine shall be removed for the test.\nThe following non-exhaustive list is given as an example:\n(i) air compressor for brakes\n(ii) power steering compressor\n(iii) suspension compressor\n(iv) air-conditioning system.\nNo", "extent": "E+W+S+N.I.", "status": null, "version": "current", "annotations": [ { "type": "footnote", "label": "f1", "text": "The complete inlet system shall be fitted as provided for the intended application: (i) where there is a risk of an appreciable effect on the engine power; (ii) when the manufacturer requests that this should be done. In other cases, an equivalent system may be used and a check should be made to ascertain that the intake pressure does not differ by more than 100 Pa from the upper limit specified by the manufacturer for a clean air filter." }, { "type": "footnote", "label": "f2", "text": "The complete exhaust system shall be fitted as provided for the intended application: (i) where there is a risk of an appreciable effect on the engine power; (ii) when the manufacturer requests that this should be done. In other cases, an equivalent system may be installed provided the pressure measured does not differ by more than 1 000 Pa from the upper limit specified by the manufacturer." }, { "type": "footnote", "label": "f3", "text": "If an exhaust system brake is incorporated in the engine, the throttle valve shall be fixed in the fully open position." }, { "type": "footnote", "label": "f4", "text": "The fuel feed pressure may be adjusted, if necessary, to reproduce the pressure existing in the particular engine application (particularly when a ‘fuel return’ system is used)." }, { "type": "footnote", "label": "f5", "text": "The cooling-liquid circulation shall be operated by the engine water pump only. Cooling of the liquid may be produced by an external circuit, such that the pressure loss of this circuit and the pressure at the pump inlet remain substantially the same as those of the engine cooling system." }, { "type": "footnote", "label": "f6", "text": "The thermostat may be fixed in the fully open position." }, { "type": "footnote", "label": "f7", "text": "When the cooling fan or blower is fitted for the test, the power absorbed shall be added to the results, except for cooling fans of air cooled engines directly fitted on the crankshaft. The fan or blower power shall be determined at the speeds used for the test either by calculation from standard characteristics or by practical tests." }, { "type": "footnote", "label": "f8", "text": "Charge air-cooled engines shall be tested with charge air cooling, whether liquid — or air-cooled, but if the manufacturer prefers, a test bench system may replace the air cooler. In either case, the measurement of power at each speed shall be made with the maximum pressure drop and the minimum temperature drop of the engine air across the charge air cooler on the test bench system as those specified by the manufacturer." }, { "type": "footnote", "label": "f9", "text": "The power for electrical or other starting systems shall be provided from the test bed." } ], "outstanding_effects": [], "provenance": { "source": "legislation.gov.uk", "source_url": "https://www.legislation.gov.uk/eur/2017/654/annex/VI/appendix/2", "retrieved_at": "2026-11-01T14:45:01.864924+00:00" }, "licence": "Open Government Licence v3.0", "licence_url": "https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/", "attribution": "Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives." }