Emission Labs :
This lab which
measures exhaust pipe emissions
can conduct pollution tests on passenger vehicles
and
light
vans
on
the
chassis
Dynamometer
in
accordance
with European
, American
and Japanese
standards. The lab has a
number of
analyzers to measure air
pollutants
and
take
C.V.S.
sampling
.
It
can
determine
the
amount
of
carbon monoxide, carbon dioxide, nitrogen
oxide and unburned
hydrocarbons
.(Up to Euro IV Standard)
Different
methods are employed for
different pollutants:
-
Unburned hydrocarbons are measured through Flame Ionization Detector
(FID)
-
Nitrogen oxides are measured by way of Chemiluminescence’s Detection
(CLD)
-
Carbon monoxide and dioxide are measured through Non-Dispersive Infrared
Detection (NDIR)
-
CVS sampling which matches up to pollutant gas measurement standards is
used to dilute with fresh air the gases that are emitted and then
take samples from the mixture to carry out tests. The labs apply
Critical Flow Venturi (CFV) sampling.
In order to
simulate the movement of
vehicles on the standard cycles, chassis dynamometer is used. This
chassis dynamometer simulates the resistance of the vehicle as it is
on the road. The chassis dynamometer used in the lab has a single
axis and 2 rollers. It can simulate the weight of the vehicle
through mechanical means. DC motor is used in the chassis
dynamometer. Besides it can be used to measure the power on the
wheels and maximum speed of the vehicle.
The lab
equipped with advanced fuel gauging equipment which draw on the
Coriolis method and a device to regulate fuel temperatures, can
accurately measure the amount of fuel consumed by gas-powered
passenger vehicles on the dynamometer chassis.
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