Appendix 7
United Kingdom
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 torquef1 | 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 temperaturef2 | 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) 2017/656f3 on administrative requirements the communication standard(s) used for providing access to data stream information in accordance with point 2.1.1.
Annotations
Footnotes
- f1
-
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.
- f2
-
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.
- f3
-
Commission Implementing Regulation (EU) 2017/656 of 19 December 2016 laying down the administrative requirements relating to emission limits and type-approval of internal combustion engines for non-road mobile machinery in accordance with Regulation (EU) 2016/1628 of the European Parliament and of the Council (see page 364 of this Official Journal).