View Full Version : 5 gas anaylsis test is this same as IM240
dazza304
04-03-2010, 01:08 PM
Hey all just had a query from a fella regarding the 5 gas anaylsis on emission testing as we perform statutory emission tests for diesel equipment underground. he got yellowed stickered in Kalgoorlie for his extractors and exhaust by the blue, if i understand this right is this the re instatment of the im 240 law,
KAL SPL
04-03-2010, 01:40 PM
Apparently there starting to crack down quite heavily on emissions , cammed cars will be targeted.
JaMeS
04-03-2010, 02:45 PM
ahhhhhh fark.
Redbeard
05-03-2010, 07:57 AM
Here ya go!
IB-124D
Vehicle Safety and Standard’s Information Bulletin
IB-124D (Dec 09) Application date Dec 09 page 1 of 2
Moratorium on Emission Testing of
Light Vehicles in WA (September 2009)
The Department of Transport has introduced a moratorium on IM240 emissions testing. The purpose of the moratorium is to allow existing requirements to be reviewed to address industry stakeholder concerns. During this period, a temporary modification permit, valid for six months, will be issued for vehicles that may require IM240 testing under the revised policy.
Background
Until recently, limited vehicle emission testing options have been available in Western Australia to measure changes in emission levels due engine modifications, in particular the addition of turbochargers and superchargers. The recent establishment of an IM240 test facility has allowed Transport to implement a more accurate test regime. Transport took into account that the IM240 test is nationally recognised as a reasonable approximation of the Australian Design Rules (ADR) testing requirements.
The automotive industry has raised some concerns about the emission testing requirements and requested a review of this policy. To ensure that these industry concerns are addressed, Transport has introduced a moratorium for up to six (6) months. During this period thorough consultation on emissions testing will be undertaken with the industry.
Interim Policy
Vehicles with modifications likely to affect emissions will need to be assessed by the Transport's Vehicle Safety and Standards Section.
Engineering reports, other information and checklists that demonstrate the vehicle complies with standards will still be requested.
Depending on the type of modification, the Department may still require a five gas analyser test as part of the initial application process, to provide assurance that the vehicle does not have extremely high levels of emissions.
Providing all other criteria are met, a modification permit valid for six (6) months will be issued.
A second, permanent modification permit will be issued after the six month period expires, provided that the vehicle passes any emission testing required under the new policy.
IB-124D
IB-124D (Sept 09) Application date Dec 09 page 2 of 2
Which modifications are affected?
In general, the following modifications are likely to have an effect on emissions and are dealt with under this policy:
o
Engines modified by the fitment of a supercharger or turbocharger
o
Individually constructed vehicles (ICVs)
o
Engines that have been significantly modified to enhance performance (e.g. with the fitment of a high performance camshaft)
o
When there is reprogramming of the electronic control unit (ECU, the engine management computer), or a chip swap
o
Major modifications to the exhaust systems - where the catalytic converter has been replaced with one that may not be fit for purpose or where the operation of the catalytic converter may be affected by aftermarket modifications (such as extractors) or significant relocation from the original position.
NB: Certain minor modifications of the exhaust system may be deemed unlikely to impact significantly upon vehicle emissions. In this case, the owner will be issued with a permanent modification permit and will not be required to undertake future IM240 testing for the modification(s) in question.
IMPORTANT
The IM240 emission test is still a valid test. Should you choose to undertake the test and subsequently pass it, then you will satisfy the policy requirements.
What does the vehicle owner need to do?
In the first instance, vehicle owners should apply to Transport's Vehicle Safety and Standards Section, to initiate the assessment process and obtain specific information on what is required. A Written application form is available online at:
http://www.dpi.wa.gov.au/mediaFiles/...rm_prodveh.pdf (http://www.dpi.wa.gov.au/mediaFiles/lic_modform_prodveh.pdf)
The completed form should be sent to the Vehicle Safety and Standards Section at:
21 Murray Road South, WELSHPOOL 6106.
Vehicle Safety and Standards may also be contacted by phone on (08) 9216 3880.
The applicant may be required to provide an engineer's report for the vehicle, along with all pertinent checklists required from the National Code of Practice for Light Vehicle Construction and Modification (VSB14). The National Code of Practice for Light Vehicle Construction and Modification checklists can be found at
National Code of Practice for Light Vehicle Construction and Modification (NCOP) (http://www.infrastructure.gov.au/roads/vehicle_regulation/bulletin/vsb_ncop.aspx).
Once approved in principle, a covering letter from the VSSS will be provided for the vehicle examiner to show that the vehicle has met the pertinent standards.
2IMPULSIV
05-03-2010, 05:40 PM
Interesting. :)
Posted via Mobile Device
dazza304
10-03-2010, 01:12 PM
I just made a phone call enquiry to Vehicle saftey standards board about this new legislation, the fella i talked to said the legislation still may be dropped due the the providers of the IM240 charging big dollar and the lack of interest from business to attain the equipment to provide the testing facilities to improve competion in price.
So if we are all Lucky this piece of #### legislation will be scrapped
dazza304
10-03-2010, 01:23 PM
This was recommended to me from the fella at the vehicle saftey standards mob this is a guideline of what can be expected when a IM 240 test is done
Someone correct me if im wrong
IM240 Test Procedure
The IM240 begins by driving the vehicle onto the dynamometer, activating
vehicle restraints, properly placing the exhaust collection device, and positioning
the auxiliary engine cooling fan. An inspector then “drives” the vehicle according
to a prescribed cycle displayed on a video screen. The inspector follows the
driving cycle by using the accelerator pedal and the brake to speed up or slow
down just as if the vehicle were being driven on a city street. A cursor on the
video screen indicates vehicle speed. The inspector adjusts the speed to keep the
cursor on the trace. This technique is easily and quickly learned by anyone who
The length of the IM240 test varies depending on the vehicle’s emissions. To
determine emission levels, second-by-second instantaneous emission
measurements are taken and integrated by a computer. Failure levels for
vehicles undergoing I/M tests are generally two to three times higher than
manufacturer certification standards for new cars. The computer continually
monitors and assesses the emission levels during each phase of the test and uses
pass/fail algorithms to identify exceptionally clean or dirty vehicles. As soon as
the emission rates indicate that a vehicle is exceptionally clean or dirty, the
computer automatically notifies the inspector to stop testing. For vehicles that
are close to maximum allowable emission levels, the test may continue for a full
240 seconds. Thus, while the complete driving cycle is 240 seconds long, the
average test time will be only two to three minutes.
Evaporative System Purge Test
Since 1971, fuel tanks on cars have been designed as a closed system in which
vapors that evaporate from the gasoline in the tank are not released into the
atmosphere. The system is sealed and under pressure so that excess vapors are
shunted to a container filled with charcoal known as the evaporative canister.
The evaporative system purge test is used to determine whether fuel vapor
stored in the evaporative canister and present in the fuel tank is being properly
drawn into the engine for combustion. If the purge system is not working
properly, the evaporative canister can become saturated and start to vent hydrocarbons
into the atmosphere. In addition to causing HC emissions, failure of the
purge system wastes gasoline.
EXHAUST
ANALYZERS
and CVS
INERTIA FLYWHEELS DYNAMOMETER
FAN
COMPUTER
The purge test is conducted while the vehicle is undergoing the IM240 on the
dynamometer. Purge flow is measured by simply inserting a flow meter at one
end of the hose that runs between the evaporative canister and the engine.
Determination of an acceptable purge rate is based on the total volume of gas
that flows through the system during the IM240, not by instantaneous flow
rates. The vehicle must have a minimum of 1 liter of volume in order to pass.
Most cars in proper working order will accumulate as much as 25 liters during
the IM240 cycle. As soon as a vehicle exceeds 1 liter of volume, the purge test is
complete. The entire IM240 driving cycle ends as soon as final results are determined
for the emission test.
The purge test requires a flow meter that can measure the total volume of flow
over the transient cycle. Additionally, hoses and universal fittings are required
to hook up the flow meter as indicated below. Finally, a computer is needed to
control the test process, collect and record the data, and determine the pass/fail
Evaporative System Pressure Test
The pressure test checks the system for leaks that would allow fuel vapors to
escape into the atmosphere. A “pressure decay” method is used to monitor for
pressure losses in the system. In this method, the vapor lines to the fuel tank
and the fuel tank itself are filled with nitrogen to a pressure of 14 inches of
water (about 0.5 psi). To pressurize these components, the inspector must locate
the evaporative canister, remove the vapor line from the fuel tank, and hook up
the pressure test equipment to the vapor line. After the system is filled, the
pressure supply system is closed off and the loss in pressure is observed. If
pressure in the system remains above eight inches of water after two minutes,
the vehicle passes the test.
A source of nitrogen, a pressure gauge, a valve, and associated hoses and fittings
are needed to perform the pressure test. In addition, a computer is used to
automatically meter the nitrogen, monitor the pressure, and collect and process
the results. Algorithms will be developed to optimize the test so that a pass/fail
decision can be made in less than two minutes on most vehicles.
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