3.1.1 The maximum allowable NOx emission
limit values are given by paragraphs 3, 4, 5.1.1 and 7.4 of regulation 13 as applicable. The total
weighted NOx emissions, as measured and calculated, rounded
to one decimal place, in accordance with the procedures in this Code,
shall be equal to or less than the applicable calculated value corresponding
to the rated speed of the engine.
3.1.2 When the engine operates on test fuel oils
in accordance with 5.3, the total
emission of nitrogen oxides (calculated as the total weighted emission
of NO2) shall be determined using the relevant test cycles
and measurement methods as specified in this Code.
3.1.3 An engine’s exhaust emissions limit
value, given from the formulae included in paragraph 3, 4 or 5.1.1
of regulation 13 as applicable,
and the actual calculated exhaust emissions value, rounded to one
decimal place for the engine, shall be stated on the engine’s
EIAPP Certificate. If an engine is a member engine of an engine family
or engine group, it is the relevant parent engine emission value that
is compared to the applicable limit value for that engine family or
engine group. The limit value given here shall be the limit value
for the engine family or engine group based on the highest engine
speed to be included in that engine family or engine group, in accordance
with paragraph 3, 4 or 5.1.1 of regulation
13, irrespective of the rated speed of the parent engine or
the rated speed of the particular engine as given on the engine’s
EIAPP certificate.
3.1.4 In the case of an engine to be certified
in accordance with paragraph 5.1.1 of regulation
13 the specific emission at each individual mode point shall
not exceed the applicable NOx emission limit value by more
than 50% except as follows:
-
.1 The 10% mode point in the D2 test cycle specified
in 3.2.5.
-
.2 The 10% mode point in the C1 test cycle specified
in 3.2.6.
-
.3 The idle mode point in the C1 test cycle specified
in 3.2.6.