Annex 8 -Appendix 2
REESS energy change-based correction procedure2.2. The
correction
coefficients shall be determined from a set of charge-sustaining Type 1 tests
according to paragraph 3. of this Appendix 2. The number of tests performed
by the manufacturer shall be equal or more than 5.
The manufacturer may request to set the state of charge of the REESS prior
to the test according to the manufacturer’s recommendation and as described
in paragraph 3. of this Appendix. This practice shall only be used for the
purpose of achieving a charge-sustaining Type 1 test with opposite sign of
the ∆EREESS,CS and with approval of the type approval authority.
The set of measurements shall fulfil the following criteria:
(a)
This set shall contain at least one test with ∆EREESS,CS ≤ 0 and at least
one test with ∆EREESS,CS > 0 . ∆EREESS,CS,n is the sum of electric
energy changes of all REESSs of test n calculated according to
paragraph 4.3. of this Annex
(b)
The difference in MCO2,CS between the test with the highest negative
electric energy change and the test with the highest positive electric
energy change, both are the outer tests related to the electric energy
change, shall be equal or more than 5 g/km.
The required number of tests may be reduced to 3 tests if all of the following
criteria are fulfilled in addition to (a) and (b):
(c)
the difference in MCO2,CS between two adjacent measurements,
referred to the electric energy change during the test, is equal or less
than 10 g/km.
(d)
in addition to (b) the test with highest negative electric energy change
and the test with the highest positive electric energy change is not be
within the region that is defined by
−1 % ≤
(e)
∆EREESS
Efuel
≤ + 1 %,
the test in between the test with highest negative electric energy
change and the test with the highest positive electric energy change
falls within the region defined in (d) or (b), whichever is the largest
The correction coefficients determined by the manufacturer shall be reviewed
and approved by the technical authority prior to its application.
If the set of at least 5 tests does not fulfil criterion (a) or criterion (b) or both, the manufacturer shall give
evidence to the responsible authority why the vehicle is not capable to meet either or both criteria. If the
responsible authority is not satisfied with the evidence, he can require additional tests to be performed. If
the criteria after additional tests are still not fulfilled, the responsible authority will determine a
conservative correction coefficient, based on the measurements.
1