ached for CO2,
according to the test

criteria applied in the appropriate table.

 

If no pass decision and/or no fail decision is reached
for CO2, a

test is carried out on an additional vehicle (see Figure
I/8).

 

FIGURE I/8 
9.1.1.2. Notwithstanding the requirements of point 5.1.1

of this Annex, the tests will be carried out on vehicles
which have

not travelled any distance.

 

9.1.1.2.1. However, at the request of the manufacturer,
the tests

will be carried out on vehicles which have been run-in a
maximum of 15

000 km.

 

In this case, the running-in procedure will be conducted
by the

manufacturer who shall undertake not to make any
adjustments to those

vehicles.

 

9.1.1.2.2. If the manufacturer asks to conduct a
running-in

procedure ('x' km, where x & le; 15 000 km), it may
be carried out as

follows:

 

- the emission of CO2 will be measured at zero and at'x'
km on the

  first tested
vehicle (which can be the type-approval vehicle),

 

- the evolution coefficient of the emission between zero
and'x' km

  will be
calculated as follows:

 

It may be less than one,

 

- the following vehicles will not be subjected to the
running-in

  procedure, but
their zero km emissions will be modified by the

  evolution
coefficient, EC.

 

In this case, the values to be taken will be:

 

- the value at'x' km for the first vehicle,

 

- the values at zero km multiplied by the evolution
coefficient for

  the following
vehicles.

 

9.1.1.2.3. As an alternative to this procedure, the car
manufacturer

can use a fixed evolution coefficient EC of 0,92 and
multiply all

values of CO2 measured at zero km by this factor.

 

9.1.1.2.4. The reference fuels described in Annex VII to
Directive

91/441/EEC shall be used for this test.

 

9.2. Conformity of production when manufacturer's
statistical data

is available

 

9.2.1. The following sections describe the procedure to
be used to

verify the CO2 conformity of production requirements when
the

manufacturer's production standard deviation is
satisfactory.

 

9.2.2. With a minimum sample size of three the sampling
procedure is

set so that the probability of a lot passing a test with
40 % of the

production defective is 0,95 (producer's risk = 5 %),
while the

probability of a lot being accepted with 65 % of  the production

defective is 0,1 (consumer's risk = 10 %).

 

9.2.3. The following procedure is used (see Figure I/8).

 

Let L be the natural logarithm of the CO2 type-approval
value:

 

xi = the natural logarithm of the measurement for the
i-th vehicle

of the sample;

 

s = an estimate of the production standard deviation
(after taking

the natural logarithm of the measurements);

 

n = the current sample number.

 

9.2.4. Compute for the sample, the test statistic
quantifying the

sum of the standardized deviations to the limit and
defined as:

 

S9.2.5. Then:

 

- if the test statistic is greater than the pass decision
number for

  the sample size
given in Table I/ /9.2.5, a pass decision is reached,

 

- if the test statistic is less than the fail decision
number for

  the sample size
given in Table I/ /9.2.5, a fail decision is reached,

 

- otherwise, an additional vehicle is tested according to
point 6 of

  this Annex and
the procedure is applied to the sample with one unit

  more.

 

TABLE I/ /9.2.5

 

>>>> ID="2">(a)>
ID="3">(b)> ID="4">(c)>>>
ID="2">3> ID="3">3,327>

ID="4"> 
4,724>>> ID="2">4>
ID="3">3,261> ID="4">  4,790>>> ID="2">5>

ID="3">3,195> ID="4">  4,856>>> ID="2">6>
ID="3">3,129> ID="4">

4,922>>> ID="2">7>
ID="3">3,063> ID="4">   4,988>>> ID="2">8>

ID="3">2,997> ID="4">  5,054>>> ID="2">9>
ID="3">2,931> ID="4">

5,120>>> ID="2">10>
ID="3">2,865> ID="4">  5,185>>> ID="2">11>

ID="3">2,799> ID="4">  5,251>>> ID="2">12>
ID="3">2,733> ID="4">

5,317>>> ID="2">13>
ID="3">2,667> 
ID="4"> 
5,383>>> ID="2">14>

ID="3">2,601> ID="4">  5,449>>> ID="2">15>
ID="3">2,535> ID="4">

5,515>>> ID="2">16>
ID="3">2,469> ID="4">  5,581>>> ID="2">17>

ID="3">2,403> ID="4">  5,647>>> ID="2">18>
ID="3">2,337> ID="4">

5,713>>> ID="2">19>  ID="3">2,271>
ID="4">  5,779>>>
ID="2">20>

ID="3">2,205> ID="4">  5,845>>> ID="2">21>
ID="3">2,139> ID="4">

5,911>>> ID="2">22>
ID="3">2,073> ID="4">  5,977>>> ID="2">23>

ID="3">2,007> ID="4">  6,043>>> ID="2">24>
ID="3">1,941> ID="4">

6,109>>> 
ID="2">25> ID="3">1,875>
ID="4">  6,175>>>
ID="2">26>

ID="3">1,809> ID="4">  6,241>>> ID="2">27>
ID="3">1,743> ID="4">

6,307>>> ID="2">28>
ID="3">1,677> ID="4">  6,373>>> ID="2">29>

ID="3">1,611> ID="4">  6,439>>> ID="2">30>
ID="3">1,545> ID="4">

6,505>>> ID="2">31>
ID="3">1,479> ID="4">  6,571>>> ID="2">32> ID="3">

 2,112 >
ID="4">  2,112>>>

 

9.3. Conformity of production when manufacturer's
statistical data

is unsatisfactory or unavailable.

 

9.3.1. The following sections describe the procedure to
be used to

verify the CO2 conformity of production requirements when
the

manufacturer's evidence of production standard deviation
is either

unsatisfactory or unavailable.

 

9.3.2. With a minimum sample size of three the sampling
procedure is

set so that the probability of a lot passing a test with
40 % of the

production defective is 0,95 (producer's risk = 5 %),
while the

probability of a lot being accepted with 65 % of  the production

defective is 0,1 (consumer's risk = 10 %).

 

9.3.3. The measurement of CO2 is considered to be log
normally

distributed and should first be transformed by taking the
natural

logarithms. Let m0 and m denote the minimum and maximum
sample sizes

respectively (m0 = 3 and m = 32) and let n denote
the  current sample

number.

 

9.3.4. If the natural logarithms of the measurements in
the series

are x1, x2,..., xj and L is the natural logarithm of the
CO2

type-approval value, then define:

 

SS9.3.5. Table I/ /9.3.5 shows values of the pass (An)
and fail (Bn)

decision numbers against current sample number. The test
statistic is

the ratio   dn /
Vn and shall be used to determine whether the series

has passed or failed as follows:

 

for m0 & le; n & le; m:

 

- pass the series if  
dn / Vn & le; An,

 

- fail the series if  
dn / Vn & ge; Bn,

 

- take another measurement if An <    dn / Vn <  Bn.

 

9.3.6. Remarks

 

The following recursive formulae are useful for computing
successive

values of the test statistic:

 

TABLE I/ /9.3.5

 

>>>> ID="2">(a)>
ID="3">(b)> ID="4">(c)>>>
ID="2">3> ID="3">

0,80381> ID="4">16,64743>>>
ID="2">4> ID="3"> 
0,76339>

ID="4">7,68627>>>
ID="2">5> ID="3"> 
0,72982> ID="4">4,67136>>>

ID="2">6> ID="3">  0,69962>
ID="4">3,25573>>> ID="2">7>
ID="3">

0,67129> ID="4">2,45431>>>
ID="2">8> ID="3"> 
0,64406>

ID="4">1,94369>>>
ID="2">9> ID="3"> 
0,6175 > ID="4">1,59105>>>

ID="2">10> ID="3">  0,59135>
ID="4">1,33295>>> ID="2">11>
ID="3">

0,56542> ID="4">1,13566>>>
ID="2">12> ID="3">  0,5396 > 
ID="4">0,9797

>>> ID="2">13>
ID="3">  0,51379>
ID="4">0,85307>>> ID="2">14>
ID="3">

0,48791> ID="4">0,74801>>>
ID="2">15> ID="3">  0,46191>

ID="4">0,65928>>>
ID="2">16> ID="3">  0,43573> ID="4">0,58321>>>

ID="2">17> ID="3">  0,40933>
ID="4">0,51718>>> 
ID="2">18> ID="3">

0,38266> ID="4">0,45922>>>
ID="2">19> ID="3">  0,3557 >

ID="4">0,40788>>>
ID="2">20> ID="3">  0,3284 > ID="4">0,36203>>>

ID="2">21> ID="3">  0,30072>
ID="4">0,32078>>> ID="2">22>
ID="3">

0,27263> ID="4">0,28343>>>
ID="2">23> ID="3">   0,2441 >

ID="4">0,24943>>>
ID="2">24> ID="3">  0,21509> ID="4">0,21831>>>

ID="2">25> ID="3">  0,18557> ID="4">0,1897
>>> ID="2">26> ID="3">

0,1555 > ID="4">0,16328>>>
ID="2">27> ID="3">  0,12483> ID="4">0,1388

>>> ID="2">28>
ID="3">  0,09354>  ID="4">0,11603>>>
ID="2">29> ID="3">

 0,06159>
ID="4">0,0948 >>> ID="2">30>
ID="3">  0,02892>

ID="4">0,07493>>>
ID="2">31> ID="3">  0,00449> ID="4">0,05629>>>

ID="2">32> ID="3">  0,03876>
ID="4">0,03876>>>

 

10. SPECIAL PROVISIONS

 

10.1. In the future, vehicles with special fuel efficient

technologies may be offered which could be submitted to
complementary

testing programmes. These would be specified at a later
stage which

can be claimed by the manufacturer in order to  demonstrate the

advantages of the solution.

 

11. EXTENSION OF APPROVAL

 

11.1. The type-approval can be extended to vehicles from
the same

type or from a different type differing with regard to
the following

characteristics of Annex II if the CO2 emissions measured
by the

technical service do not exceed by more than 4 % the  type-approval

value:

 

11.1.1. Mass.

 

11.1.2. Maximum authorized mass.

 

11.1.3. Type of bodywork: saloon, estate, coupВ.

 

11.1.4. Overall gear ratios.

 

11.1.5. Engine equipment and accessories.

 

(1) OJ No L 242, 30. 8. 1991, p. 1.

 

(2) OJ No L 242, 30. 8. 1991, p. 1.

 

(3) In ppm carbon equivalent.

    

                               ANNEX II

 

MODEL  (maximum
format: A4 (210 x 297 mm))

 

EC TYPE-APPROVAL CERTIFICATE  STAMP OF ADMINISTRATION

 

Communication concerning the:

 

- type approval (1)

 

- extension of type approval (1)

 

- refusal of type approval (1)

 

- withdrawal of type approval (1)

 

of a type of vehicle /