# Commission Delegated Regulation (EU) 2017/655 of 19 December 2016 supplementing Regulation (EU) 2016/1628 of the European Parliament and of the Council with regard to monitoring of gaseous pollutant emissions from in-service internal combustion engines installed in non-road mobile machinery (Text with EEA relevance), Appendix 7

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

ECU data stream information requirements
1.
Data to be provided
1.1.
The ECU shall provide at a minimum the measurement data listed in the Table 1.
Table 1
Measurement data
The provided value shall be either (a) the net brake engine torque; or (b) the net brake engine torque calculated from other appropriate torque values as defined in the corresponding protocol standard set out in point 2.1.1. The basis for the net torque shall be uncorrected net torque delivered by the engine inclusive of the equipment and auxiliaries to be included for an emissions test in accordance with Appendix 2 of Annex VI to Delegated Regulation (EU) 2017/654.
Parameter
Unit
Engine torque
Nm
Engine speed
rpm
Engine coolant temperature
K
1.2.
Where either ambient pressure or ambient temperature are not measured by external sensors, they shall be provided by the ECU according to Table 2.
Table 2
Additional measurement data
Use of an intake air temperature sensor shall comply with the requirements set out in the second paragraph of point 5.1 of Appendix 2.
Parameter
Unit
Ambient temperature
K
Ambient pressure
kPa
Engine fuel flow
g/s
1.3.
Where exhaust mass flow is not measured directly, the engine fuel flow shall be provided according to the Table of point 1 of Appendix 2.
2.
Communication requirements
2.1.
Access to data stream information
2.1.1.
Access to data stream information shall be provided in accordance with at least one of the following series of standards:
(a) ISO 27145 with ISO 15765-4 (CAN-based);
(b) ISO 27145 with ISO 13400 (TCP/IP-based);
(c) SAE J1939-73.
2.1.2.
The ECU shall support the corresponding services of at least one of the standards listed above in order to provide the data set out in Table 1.
Implementation of additional features of the standard(s) in the ECU is permitted but not mandatory.
2.1.3.
Access to data stream information shall be possible by means of a wired connection (external scan-tool).
2.2.
CAN-based wired communication
2.2.1.
The communication speed on the wired data link shall be either 250 kbps or 500 kbps.
2.2.2.
The connection interface between the engine and the measurement instruments of the PEMS shall be standardised and shall meet all requirements of ISO 15031-3 Type A (12 VDC power supply), Type B (24 VDC power supply) or SAE J1939-13 (12 or 24 VDC power supply).
2.3
Documentation requirements
The manufacturer shall indicate in the information document set out in Implementing Regulation (EU) 2017/656 on administrative requirements the communication standard(s) used for providing access to data stream information in accordance with point 2.1.1.

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Source: https://www.legislation.gov.uk/eur/2017/655/annex/appendix/7 (the official version)
Page: https://openlegislation.uk/eu-regulation-2017-655/annex/appendix-7
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.