Transcript Working group L-EPPR 07 June 2013

Informal Document: EPPR-03-05e
(3rd EPPR Session – June 7, 2013)
Working group L-EPPR
07 June 2013
International environmental and propulsion performance requirements
for L-category vehicles – EC perspective
Test type I emission laboratory tests (common for 2-, 3- or 4-wheels)
• The exhaust gas will be collected in sample bags and analysed after
the test is finished.
• The test result for the constituents THC, CO, NOx and PM is
expressed in milligrams per driven kilometre. CO2 in g/km
• This represents the amount in grams of pollutants, emitted in average
by the vehicle when driving 1000 m.
2
Emission laboratory test cycle
WMTC Cycle - Phases
140
PHASE 1
PHASE 2
PHASE 3
120
100
Speed (km/h)
• The vehicle speed trace
of a certain driving cycle
is projected on the screen
in front of the rider /
driver.
80
60
40
20
0
• The driver must operate
the vehicle such that the
actual and desired
(programmed) vehicle
speed exactly match.
• If there is no perfect
match of actual and
desired vehicle speed the
test will be declared as
invalid.
0
200
400
600
800
1000
1200
1400
1600
1800
Time (s)
3
Emission laboratory test cycle
• Other examples of L-category vehicles tested on tailpipe emissions
Three wheels
Two wheels
Four wheels
4
Test type I emission laboratory test
•
WMTC
•
Conclusion EC, should be applicable for L-category vehicles.
• The advantages of moving to one single test cycle for L-category
vehicles outweigh by far its single disadvantage (adaptation
manufacturers to new test cycle for certain L-vehicle categories).
This single disadvantage is mitigated by an extremely long
transition time in the EU.
WMTC Cycle - Phases
140
PHASE 1
PHASE 2
PHASE 3
120
Speed (km/h)
100
80
60
40
20
0
0
200
400
600
800
1000
Time (s)
1200
1400
1600
1800
5
Test type I emission laboratory tests
•
Replace conventional ECE47 test cycle used to type approve L1e
(mopeds and light scooters), L2 (three-wheel mopeds) and L6e
(light quadricycles) with a new test cycle based on urban, low
vehicle speed, part 1 of WMTC test cycle.
New test cycle
(bottom) based
on urban (low
vehicle speed)
fraction of
WMTC test
cycle replacing
traditional
ECE47 cycle
(top)
6
Test type I emission laboratory tests
Chassis dynamometer load
adsorption curve
7
Test type I emission laboratory tests
The load absorbed by the brake and the chassis dynamometer reflecting internal frictional effects :
F = (a + b·v2) ±0.1·F80 (without being negative)
where:
F = total load absorbed by the chassis dynamometer (N),
a = value equivalent to rolling resistance (N),
b = value equivalent to coefficient of air resistance (N/(km/h)2),
v = vehicle speed (km/h),
F80 = load at 80 km/h (N).
8
Structure EU Regulation on Environmental and Propulsion
Performance Requirements (REPPR)
•
Annexes II and V of Regulation 168/2013 (L60, 2.3.2013, p. 52)
propose high level structure and provide the general framework
1. Environmental performance test procedures related to e.g.
measurement of exhaust emissions, evaporative emissions,
greenhouse gas emissions, fuel or energy consumption, electric
range etc.;
2. Test procedures maximum design vehicle speed, maximum
torque, maximum continuous rated and net power;
9
Draft EU Regulation on Environmental and Propulsion Performance
Requirements (REPPR) - environmental test requirements - structure
•
The draft EU delegated act REPPR contains the following annexes:
Annex
Number
Annex title
I
Test type I requirements: tailpipe emissions after cold start
II
Test type II requirements: tailpipe emissions at (increased idle) / free
acceleration test
III
Test type III requirements: emissions of crankcase gases
IV
Test type IV requirements: evaporative emissions
V
Test type V requirements: durability of pollution control devices
VI
Test type VII requirements: measurement of CO2 emissions, fuel
consumption, electric energy consumption and electric range
determination
VII
Test type VIII requirements: environmental on-board diagnostic
(OBD) tests
VIII
Test type IX requirements: sound level
IX
Test procedures
performance
X
Vehicle and propulsion family definition
XI
Amendment of Annex V to Regulation (EU) No 168/2013
and
technical
requirements
on
propulsion
10
Draft EU Regulation on Environmental and Propulsion Performance
Requirements (REPPR) - environmental test requirements - structure
• Annex I of the draft EU delegated act REPPR contains the following
appendices: Appendix
Appendix title
Number
1
2
3
4
5
6
7
8
Used symbols in Annex I
Reference fuels
Chassis dynamometer system
Dilution system
Equivalent inertia mass and running resistance
Driving cycles for Type I tests
Road tests of a L-category vehicle equipped with one wheel on the
powered axle or twinned wheels for the determination of test bench
settings
Road tests of a L-category vehicle with two or more wheels on the
powered axle(s) for the determination of test bench settings.
9
Explanatory note on gearshift procedure for the Type I test
10
Type-approval tests of replacement pollution control devices for a Lcategory vehicle as separate technical unit
11
12
Type I test procedure for a hybrid L-category vehicle
Type I test procedure for a L-category vehicle fuelled with LPG,
NG/biomethane, flex fuel H2NG or Hydrogen
13
Type I test procedure for a L-category vehicle equipped with a
periodically regenerating system
11
Proposal EC to structure output of L-EPPR working group
• 1998 Agreement, use base proposals from India and Japan
• Expand scope of GTR No 2 and extend to new GTRs:
• Include engine displacement < 50 cm3
• Two- and three-wheel vehicles only under the 1998 Agreement
• GTR No 2: test types I, II, V and VII
• New GTR: test types III and IV
• New GTR: test type VIII, to be discussed if functional OBD can be
included.
• New GTR: propulsion performance (max vehicle design speed, max
torque and power)
12
Proposal EC to structure output of L-EPPR working group
• 1958 Agreement
• EC neutral with regard to structure either:
• replicate structure of R83 & R101 (include all environmental test
types in one new UN Regulation and the propulsion performance
requirements into another new one); or
• mimic structure as proposed for 1998 Agreement in new "shadow"
Regulations.
• Consider upgrading R40 and R47 with measurement equipment
requirements from GTR No 2.
• To be discussed if categories L6 and L7 (light 4-wheel vehicles) can be
included in the scope of new UN Regulations (58 Agreement only).
13
Thank you for your attention
Further information:
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