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Revised: January 2007
Issued: October 15, 1993
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1.
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Introduction
Test Method 213.4 — Built-In Child Restraint Systems and Built-In
Booster Cushions (January 2007) is to be used for demonstrating compliance
with the requirements of section
213.4 of Schedule IV to the Motor Vehicle Safety Regulations.
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(Original signed by)
Director, Standards Research and Development
for the Minister of Transport,
Infrastructure and Communities
Ottawa, Ontario
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2. |
Definitions
Specific vehicle shell means
the actual vehicle model part into which the built-in child restraint
system or built-in booster cushion is fabricated, including the complete
surroundings of the built-in system. If the built-in child restraint system
or built-in booster cushion is manufactured as part of
(a) any seat other than a front passenger seat, these surroundings include
the back of the seat in front, the interior rear side door panels and
trim, the specific seat, the floor pan, the B and C pillars, and the ceiling;
or
(b) the front passenger seat, these surroundings include the dashboard,
the steering wheel column, and attached levers and knobs, the A pillars,
any levers and knobs installed on the floor or on a console, the interior
front side door panels and trim, the front seat, the floor pan and the
ceiling.
(châssis de véhicule de type particulier)
Specific vehicle means the actual vehicle model into which the
built-in child restraint system and/or built-in booster cushion is fabricated.
(véhicule de type particulier)
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3. |
Test Procedure
3.1
Test Devices
3.1.1 The test device used in testing built-in child restraint
systems and built-in booster cushions shall be either a specific vehicle
shell or a specific vehicle.
3.1.2 An anthropomorphic test device (ATD) that represents a three-year-old
child and conforms to the requirements of the U.S. Code of Federal
Regulations (October 1, 1990), Title 49, Part 572, Subpart C, is to
be used in the dynamic test and the buckle release test. The ATD must
be clothed in:
(a) thermal knit, waffle-weave polyester and cotton underwear,
(b) a size-4 long-sleeved shirt having a mass of 0.1 kg,
(c) a size-4 pair of long pants having a mass of 0.1 kg and cut off just
far enough above the knee to allow the knee target point to be visible,
and
(d) size-7M sneakers with rubber toe caps and uppers of dacron and cotton
or nylon having a total mass of 0.45 kg.
The clothing of the ATD, other than the shoes, shall be machine-washed
in water that is 70°C to 82°C and machine-dried at 48°C to
60°C for 30 minutes.
3.1.3 Before being used in testing, the ATD shall be conditioned at any
ambient temperature from 19°C to 26°C and at any relative humidity
from 10% to 70% for at least four hours.
3.2 Buckle Release Test Procedure
3.2.1 The belt assembly buckles used for a built-in child restraint
system or a built-in booster cushion shall be tested for release force
in the following manner:
(a) install the ATD in the built-in child restraint system or built-in
booster cushion in accordance with subsection 3.4.3;
(b) tie a self-adjusting sling to the wrists and ankles of the ATD,
as illustrated in Figure 1;
(c) pull the sling horizontally in the manner illustrated in Figure
1 and parallel to the longitudinal centreline of either the specific vehicle
shell or the specific vehicle and apply a force of 200 N;
(d) operate the buckle release mechanism; and
(e) measure the buckle release force as specified in paragraph S5.2(d)
of Technical Standards Document No. 209 — Seat Belt Assemblies.
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Figure 1 — Self-Adjusting Sling for the Buckle Release Test
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3.3 Dynamic Test
Conditions
3.3.1 The test shall, at the option of the manufacturer, be either
(a) a frontal impact simulation with the specific vehicle shell mounted
on the test platform subject to a change of velocity of 48 km/hr with
the acceleration of the test platform entirely within the curve shown
in Figure 2; or
(b) a frontal barrier crash test of the entire specific vehicle, traveling
longitudinally forward at any speed up to and including 48 km/hr impacting
a fixed collision barrier that shall be perpendicular to the line of travel
of the vehicle.
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Figure 2 — Test Platform Acceleration Graph
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3.3.2 When conducting the test with either the specific
vehicle shell or the specific vehicle,
(a) prepare the system in accordance with the manufacturer’s instructions
that are required by subsection
213.4(19) of the Motor Vehicle Safety Regulations;
(b) adjustable seats shall be in the adjustment position midway between
the forward-most and the rearmost positions, and if separately adjustable
in a vertical direction, are 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;
(c) adjustable lumbar and side supports shall be adjusted in the lowest
position and are not deployed;
(d) adjustable seat backs are placed in the manufacturer’s nominal design
riding position. If a nominal position is not specified, the undeployed
vehicle seat back shall be placed in an adjustment position so that the
torso line of a three-dimensional H-point machine installed on the undeployed
vehicle seat, as specified in the Society of Automotive Engineers (SAE)
Recommended Practice J826, measures as closely as possible to, without
exceeding, 25°;
(e) adjustable head restraints shall be adjusted to their highest adjustment
position if not otherwise specified in the manufacturer’s instructions;
(f) operable vehicle windows and vents shall be placed in the fully
opened or fully closed position;
(g) convertibles and open-body type vehicles shall have the top, if
any, in place in the closed passenger compartment configuration; and
(h) doors shall be fully closed and latched but not locked.
3.3.3 If the specific vehicle shell is selected for testing,
(a) it shall be mounted on a dynamic test platform so that the longitudinal
centreline of the shell is parallel to the direction of travel of the
test platform and so that movement between the base of the shell and the
platform is prevented; and
(b) the test platform shall be instrumented with an accelerometer that
is linked to a data processing system, and the accelerometer-sensitive
axis shall be parallel to the direction of travel of the test platform.
The data shall be filtered with a Class 60 filter, as specified in the
SAE Recommended Practice J211, Instrumentation for Impact Tests
(October 1988).
3.3.4 If the specific vehicle is selected for testing, the vehicle shall
be loaded to the following condition:
(a) in the case of a passenger car,
(i) determine the rated cargo and luggage mass (RCLM) by
RCLM = VCM minus NOM;
| where: |
VCM is the vehicle capacity mass displayed on the tire
placard of the vehicle; and
NOM is the normal occupants’ mass. |
(ii) determine the adjusted rated cargo and luggage mass (RCLadjusted)
by
| RCLMadjusted = |
RCLM minus the combined mass of the appropriate
ATDs used to test the built-in child restraint systems and built-in
booster cushions. |
(iii) determine the test mass (TM) by
| TM = |
UVM plus RCLM adjusted*
plus (2 times ATDM) plus the combined mass
of the appropriate ATDs used to test the built-in child restraint
systems and built-in booster cushions; |
| where: |
VM is the unloaded vehicle mass; and
ATDM is the mass of each of the two ATDs placed in
the front outboard seating positions which may be, at the option
of the manufacturer, an ATD that conforms to the requirements of
Sub-part B (mass of 74.4 kg) or to the requirements of Sub-part
E (mass of 78.6 kg) of the U.S. Code of Federal Regulations,
Title 49, Part 572, revised as of October 1, 1990. |
(b) in the case of a multi-purpose passenger vehicle,
(i) determine the rated cargo and luggage mass (RCLM) by
| RCLM = |
GVWR minus UVM
minus (DSC times NOM); |
| where: |
GVWR is the gross vehicle weight rating
obtained from the compliance label;
UVM is the unloaded vehicle mass;
DSC is the designated seating capacity; and
NOM is the normal occupants’ mass. |
(ii) determine the adjusted rated cargo and luggage mass (RCLMadjusted) by
| RCLMadjusted = |
RCLM or 136 kg, whichever is less)
minus the combined mass of the appropriate ATDs used to test the
built-in child restraint systems and built-in booster cushions. |
This mass is secured to the vehicle and distributed in accordance with
subparagraph (iv) below.
(iii) determine the test mass (TM) by
| TM = |
VMadjusted plus RCLMadjusted
plus the combined mass of the appropriate ATDs used to test
the built-in child restraint systems and built-in booster cushions; |
| where: |
VMadjusted = UVM plus
(2 times ATDM); and
ATDM is the mass of each of the two ATDs placed in the front outboard
seating positions which may be, at the option of the manufacturer,
an ATD that conforms to the requirements of Sub-part B (mass of
74.4 kg) or to the requirements of Sub-part E (mass of 78.6 kg)
of the U.S. Code of Federal Regulations, Title 49, Part
572, revised as of October 1, 1990. |
(iv) The test mass (TM) must be distributed over each axle so that the
mass on each axle, as measured at the tire interface, shall be in proportion
to its GAWR, in the following manner:
| where: |
PMFA is the proportional mass
over the front axle; and
PMRA is the proportional mass over the rear
axle; |
if PMFA is smaller than or equal to the
measured front axle share of the adjusted VM, then the final test mass
over the front axle should be retained as the measured front axle share
of the adjusted VM and the rear axle shall be loaded with the remaining
mass placed over the rear axle in such a manner as to not change the mass
over the front axle; or
if PMRA is smaller than or equal to the
measured rear axle share of the adjusted VM, then the final test mass
over the rear axle should be retained as the measured rear axle share
of the adjusted VM and the front axle shall be loaded with the remaining
mass placed over the front axle in such a manner as to not change the
mass over the rear axle.
(c) in the case of a bus with a GVWR greater than 4 536 kg, determine
the test mass (TM) by
| TM = |
UVM plus ([unsecured mass of 54.5
kg at every designated seating position] minus [the combined
mass of the appropriate ATDs used to test the built-in child restraint
systems and booster cushions]) plus the combined mass of the
appropriate ATDs used to test the built-in child restraint systems
and booster cushions. |
(d) if a built-in child restraint system or built-in booster cushion
is supplied in the vehicle at one of the seating positions requiring the
placement of a 50th percentile ATD that conforms to Part 572
of the U.S. Code of Federal Regulations, then the 3-year-old ATD
shall be substituted for the 50th percentile ATD, but only
at that seating position. The test mass specified above shall be adjusted
so that the final test mass remains as if the test had been performed
with 50th percentile ATDs;
(e) all instrumentation and data reduction shall be in accordance with
SAE J211 OCT88;
(f) 50th percentile ATDs shall be installed at the applicable
front outboard seating positions in accordance with the seating procedure
described in Test Method 208 — Occupant Restraint
Systems in Frontal Impact (December 1996);
(g) the parking brake shall be disengaged and the transmission shall
be in neutral;
(h) the tires shall be inflated to the manufacturer’s specification;
and
(i) the fuel tank shall be filled to any level from 90% to 95% of capacity,
and the rest of the fuel system shall be filled to its normal operating
capacity in accordance with Technical
Standards Document No. 301 — Fuel System Integrity.
3.3.5 The dynamic test shall be conducted at any ambient
temperature from 19°C to 26°C and at any relative humidity from
10% to 70%.
3.4 Dynamic Test Preparation
3.4.1 Prepare each built-in child restraint system and built-in booster
cushion in accordance with the manufacturer’s instructions that are required
by subsection 213.4(19)
of the Motor Vehicle Safety Regulations.
3.4.2 Place the ATD specified in subsection 3.1.2 in the built-in child
restraint system or built-in booster cushion.
3.4.3 Position the ATD according to the manufacturer’s instructions and
as follows:
(a) Holding the torso upright until it contacts the seat back of the
system or cushion, seat the ATD so that the mid-sagittal plane of its
head is vertical and parallel to the longitudinal centreline of the specific
vehicle shell or the specific vehicle;
(b) Lift the arms of the ATD as far upward as possible. Extend the legs
as far forward horizontally as possible, with the feet perpendicular to
the centreline of the lower legs; and
(c) Using a flat square surface with an area of 2 580 mm2,
apply a force of 180 N perpendicular to the back of the vehicle seat,
first against the crotch of the ATD and then against the thorax at the
mid-sagittal plane.
3.4.4 If shoulder and pelvic belts are provided that directly restrain
the ATD, they must be adjusted by tightening the belts until a 10-N force
applied simultaneously using a webbing tension pull device (as illustrated
in Figure 3) to the webbing at the top of each shoulder and to the pelvic
webbing 50 mm on either side of the mid-sagittal plane of the torso pulls
the webbing a distance of 6 mm away from the ATD. |
Figure 3 — Webbing Tension Pull Device
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3.4.5 For a built-in child restraint system or a built-in
booster cushion that uses a fixed or movable surface to restrain the occupant,
attach all appropriate restraint system belts and tighten them as specified
in subsections 3.4.3 or 3.4.4. Position each movable surface in accordance
with the manufacturer's instructions.
3.4.6 After the ATD has been installed in the restraint system, rotate
each limb downward in a plane parallel to its mid-sagittal plane until
the limb touches a surface of the restraint system, booster cushion, or
a part of the specific vehicle or specific vehicle shell so that the limbs
will not inhibit the movement of the torso or head during the test.
3.5 Dynamic Test
3.5.1 Perform the dynamic test in accordance with the procedure described
above.
3.6 Post-Dynamic Test Buckle
Release Test
3.6.1 The buckle release test shall be repeated as described in subsection
3.2 after the dynamic test.
ENDNOTE:
* This mass shall be secured in the luggage area. |
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