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)
Article 1
Subject matter
Article 2
Scope
Article 3
Procedures and requirements for monitoring of emissions of in-service engines
Article 4
Entry into force
ANNEX
1.
General requirements for in-service monitoring
2.
Plan for monitoring in-service engines
2.6. Testing scheme
2.6.1. Testing scheme based on the Emission Durability Period (EDP)
2.6.2. Testing scheme based on a 4 years' period
2.6.2.3. Small volume manufacturers
3.
Test conditions
3.1. Operator
3.2. Non-road mobile machinery's operation
3.3. Ambient conditions
3.4. Lubricating oil, fuel and reagent
3.5. Operating sequence
4.
Data sampling methods
4.1. Continuous data sampling
4.2. Combined data sampling
5.
ECU data stream
5.2. Conformity of information
6.
Test procedures and data pre-processing and validation
7.
Test data availability
8.
Calculations
9.
Confirmatory test
10.
Reporting procedures
10.2. Instantaneous measured data and instantaneous calculated data
10.3. Publicly available information
Appendix 1
Portable Emissions Measurement System
2. Measurement instruments requirements
2.2. Transfer line and sampling probe requirements
Appendix 2
Test procedure for in-service monitoring with a PEMS
1.
Test parameters
Parameter |
Unit |
Source |
HC concentration(1) |
ppm |
Gas analyser |
CO concentration(1) |
ppm |
Gas analyser |
NOx concentration(1) |
ppm |
Gas analyser |
CO2 concentration(1) |
ppm |
Gas analyser |
Exhaust mass flow(2) |
kg/h |
EFM |
Exhaust temperature |
°K |
EFM or ECU or Sensor |
Ambient temperature(3) |
°K |
Sensor |
Ambient pressure |
kPa |
Sensor |
Relative humidity |
% |
Sensor |
Engine torque(4) |
Nm |
ECU or Sensor |
Engine speed |
rpm |
ECU or Sensor |
Engine fuel flow |
g/s |
ECU or Sensor |
Engine coolant temperature |
°K |
ECU or Sensor |
Engine intake air temperature(3) |
°K |
ECU or Sensor |
Non-road mobile machinery latitude |
degree |
GPS (optional) |
Non-road mobile machinery longitude |
degree |
GPS (optional) |
2.
Minimum test duration
3.
Preparation of the non-road mobile machinery
4.
Installation of the PEMS
4.2. Electrical power supply
4.3. Measurement instruments other than the EFM
4.4. EFM
4.5. Transfer line and sampling probe
4.6. Data logger
4.7. GPS (where applicable)
5.
Pre-in-service monitoring test procedures
5.1. Ambient temperature measurement
5.2. Starting and stabilising the measurement instruments
5.3. Cleaning and heating the transfer line
5.4. Checking and calibrating the gas analysers
5.5. Cleaning the EFM
6.
In-service monitoring test data logging
6.1. Before the in-service monitoring test
6.2. During the in-service monitoring test
6.3. After the in-service monitoring test
6.4. Valid measured data for gaseous pollutant emissions calculation
6.4.2. Cold start data
7.
Checking of gas analysers
7.1. Zero periodic verification during the operating sequence
7.2. Zero periodic correction during the in-service monitoring test
7.3. Drift verification after performing the test
8.
Engine malfunction
Appendix 3
Data pre-processing for gaseous pollutant emissions calculations
1.
Definitions
2.
Drift correction
2.1. Maximum drift allowed
2.2. Drift correction
3.
Time alignment
3.1. Gas analysers data
3.2. Gas analysers and EFM data
3.3. PEMS and engine data
3.4. Procedure for improved time alignment of the PEMS data
4.
Data consistency check
4.1. Gas analysers and EFM data
Slope of the regression line, m |
0,9 to 1,1 — Recommended |
Coefficient of determination r2 |
min. 0,90 — Recommended |
4.2. ECU torque data
4.3. Brake-Specific Fuel Consumption (BSFC)
4.4. Ambient pressure
5.
Dry-wet correction
6.
NO
x
correction for humidity and temperature
Appendix 4
Algorithm for the determination of valid events during in-service monitoring
1.
General provisions
2.
Procedure to determine non-working events
3.
‘Machine work’ marking algorithm
3.1. Step 1
3.2. Step 2
3.3. Step 3
3.4. Step 4
Parameters |
Value |
D0 |
2 minutes |
D1 |
2 minutes |
D2 |
10 minutes |
D3 |
4 minutes |
4.
Examples
4.1. Exclusions of non-working data at the end of Step 1
4.2. Exclusions of non-working data at the end of Step 2
4.3. Exclusions of non-working data at the end of Step 3
4.4. End of Step 4 — Final
Appendix 5
Gaseous pollutant emissions calculations
1.
Calculation of the instantaneous gaseous pollutant emissions
2.
Determination of averaging windows' gaseous pollutant emissions and conformity factors
2.1. Averaging window method
Figure 1
Engine power versus time and averaging window gaseous pollutant emissions, starting from the first averaging window, versus time
2.2. Work based method
Figure 2
Work based method
2.2.1. Calculations of the brake specific gaseous pollutant emissions
2.2.2. Selection of valid averaging windows
2.2.3. Calculations of the conformity factors
2.3. CO
2
mass based method
Figure 3
CO
2
mass based method
2.3.1. Selection of valid averaging windows
2.3.2. Calculations of the conformity factors
3.
Rounding of gaseous pollutant emissions calculations
4.
Gaseous pollutant emission results
Appendix 6
Conformity of the ECU torque signal
1.
Maximum torque method
2.
Impossibility to check the conformity of the ECU torque signal
Appendix 7
ECU data stream information requirements
1.
Data to be provided
Parameter |
Unit |
Engine torque(1) |
Nm |
Engine speed |
rpm |
Engine coolant temperature |
K |
Parameter |
Unit |
Ambient temperature(2) |
K |
Ambient pressure |
kPa |
Engine fuel flow |
g/s |