General Test Conditions
The following conditions shall apply to the frontal barrier test.
Except as provided for in subsection 2.2.4 of this Test Method, the
vehicle, including test devices and instrumentation, shall be loaded as
follows:
2.2.1 Passenger Cars. A passenger car shall be loaded
to its unloaded vehicle mass, plus its rated cargo and luggage capacity
mass secured in the luggage area, plus the mass of the necessary anthropomorphic
test devices (ATD).
2.2.2 Multipurpose Passenger Vehicles, Trucks and Buses.
A multipurpose passenger vehicle, truck or bus with a gross vehicle weight
rating (GVWR) of 4 536 kg or less shall be loaded to its unloaded
vehicle mass, plus the following:
(a) the necessary anthropomorphic test devices,
(b) a cargo carrying capacity or 136 kg, whichever is less,
secured to the vehicle and distributed so that the weight on each axle,
as measured at the tire-ground interface, is in proportion to its gross
axle weight rating (GAWR), and
(c) if the weight on any axle, when the vehicle is loaded to the
unloaded vehicle weight plus the weight of the ATD, exceeds the axle's
proportional share of the test weight, the remaining weight shall be
placed on the other axle(s).
2.2.3 Work-performing Accessories. For the purposes of subsection
2.2.2, the unloaded vehicle mass does not include the mass of work-performing
accessories.
2.2.4 Fuel System Capacity. The fuel tank shall be filled to
any level from 90 to 95 per cent of the vehicle's fuel tank capacity,
as defined in section 2 of the Motor Vehicle Safety Regulations (MVSRs),
with Stoddard solvent having the physical and chemical properties of type
1 solvent, as set out in Table 1 of the American Society for Testing and
Materials Standard D 484-71, Standards Specification for Hydrocarbon
Dry Cleaning Solvents.
2.2.5 Vehicle Test Attitude. The distance between a
level surface and a standard reference point on the test vehicle's body
directly above each wheel opening, when the vehicle is in its "as
delivered" condition, shall be determined. The "as delivered"
condition is the vehicle as it was received at the test site, with 100
per cent of all fluid capacities and all tires inflated to the manufacturer's
specifications, as listed on the vehicle's tire placard. The distance
between the same level surface and the same standard reference points
in the vehicle's "fully loaded condition" shall be determined.
The "fully loaded condition" is the test vehicle loaded in accordance
with subsection 2.2.1 or 2.2.2, as applicable. The load placed in the
cargo area shall be centred over the longitudinal centreline of the vehicle.
The pretest vehicle attitude shall be equal to the "as delivered"
or "fully loaded" attitude, or it shall be between the "as
delivered" attitude and the "fully loaded" attitude.
2.3.1 Adjustable Seats. Adjustable seats shall be in
the adjustment position that is midway between the forward-most and rearmost
positions and, if separately adjustable in a vertical direction, shall
be at the lowest position. If an adjustment position does not exist midway
between the forward-most and rearmost positions, the closest adjustment
position to the rear of the midpoint shall be used.
2.3.2 Adjustable Seat Belt Anchorages. Adjustable seat
belt anchorages shall be adjusted to the manufacturer's nominal design
position for a 50th percentile adult male occupant.
2.3.3 Adjustable Seat Back Placement. Adjustable seat
backs shall be placed in the manufacturer's nominal design riding position
in the manner specified by the manufacturer. If a nominal position is
not specified, the seat back shall be positioned so that the accelerometer
surface in the head of the ATD, as positioned in the vehicle, is horizontal.
If the vehicle is equipped with adjustable head restraints, each shall
be adjusted to its highest adjustment position. Adjustable lumbar supports
shall be positioned so that they are in their lowest adjustment position.
2.3.4 Adjustable Steering Columns. Adjustable steering
columns shall be adjusted so that the steering wheel hub is at the geometric
centre of the locus it describes when it is moved through its full range
of driving positions.
2.3.5 Movable Windows and Vents. Movable windows and
vents shall be placed, at the option of the manufacturer, in the fully
closed position.
2.3.6 Convertibles and Open-body Type Vehicles. Convertibles
and open-body type vehicles shall have the top, if any, in place in the
closed passenger compartment configuration.
2.3.7 Doors. Doors shall be fully closed and latched,
but not locked.
2.3.8 Manual Belt Adjustment for Dynamic Testing. With
the ATD at its designated seating position, as specified by the requirements
of subsection 2.3 and section 3, the Type 2 manual seat belt shall be
placed around the ATD and the latch shall be fastened. All slack shall
be removed from the lap belt. The upper torso webbing shall be pulled
out of the retractor and allowed to retract. This operation shall be repeated
four times. A 9-N to 18-N tension load shall be applied to the lap belt.
If the belt system is equipped with a tension-relieving device, the maximum
amount of slack recommended by the manufacturer for normal use shall be
introduced into the upper torso belt. If no manual is provided, the maximum
amount of slack that the retractor can provide shall be used. If the seat
belt system is not equipped with a tension-relieving device, the excess
webbing in the shoulder belt shall be retracted by the retractive force
of the retractor.
2.3.9 Air Bag Cut-off Switch. Any air bag cut-off switch shall
be set such that the air bag is functional.
2.4.1 General. The ATDs used for the evaluation of restraint
systems shall conform to the requirements of the U.S. Code of Federal
Regulations, Title 49, Part 572, Subpart E (October
1, 1994) for a 50th percentile adult male dummy.
2.4.2 Clothing. Each ATD shall be clothed in form-fitting
cotton stretch garments with short sleeves and mid-calf length pants,
as specified in drawings 78051-292 and 78051-293, which are incorporated
by reference in the U.S. Code of Federal Regulations, Title 49,
Part 572, Subpart E (October 1, 1994), or their equivalents.
A size 11 EE shoe, as specified in drawings 78051-294 (left) and
78051-295 (right), which are incorporated by reference in the U.S. Code
of Federal Regulations, Title 49, Part 572, Subpart E
(October 1, 1994), or their equivalents, shall be placed on the feet of
the ATD.
2.4.3 Joints. The limb joints of the ATD shall be set
at 1 g, barely restraining the weight of the limb when extended horizontally.
The leg joints shall be adjusted with the torso in the supine position.
2.4.4 Instrumentation. Instrumentation shall not affect
the motion of the ATDs during impact.
2.4.5 Temperature. The stabilized temperature of an
ATD shall be at any level between 20.5°C and 22°C.
Where a vehicle fails to meet the applicable compression deflection
requirement specified in paragraph 208(22)(c) of Schedule IV to the MVSRs,
one or more additional tests may be conducted. The results of these, and
any other relevant tests, may be used to determine that the failure is
not a result of test variables such as rib temperature, rib stiffness,
dummy positioning or instrumentation calibration, and to determine whether
the vehicle meets the compression deflection requirement.
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