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Description / Abstract:
Introduction
Note: Nothing in this standard supercedes
applicable laws and regulations.
Note: In the event of conflict between the
English and domestic language, the English language shall take
precedence.
Purpose. Provide a common global development
and validation performance evaluation of a driveline system that
utilizes traction enhancing driveline hardware, e.g., Active On
Demand (AOD) All Wheel Drive (AWD) and Limited Slip Differential
(LSD) with electronic controls. This procedure is also performed to
evaluate the performance of driveline components after being
subjected to severe loads resulting from multiple vehicle launches
on grade with "split mu" surfaces, i.e., left (or right) side of
the vehicle on a small frictional coefficient (μ) surface, i.e.,
"low mu" surface, and the other side on a large frictional
coefficient surface, i.e., "hi mu" surface.
Applicability. Passenger cars and light trucks
equipped with driveline traction enhancing hardware beyond normal
brake system traction control systems.
Remarks. This test is typically run by the GM
Vehicle Dynamics group or the GM Driveline group and is used for
development/validation of the drivetrain or traction performance.
These systems may include but, are not limited to, AOD AWD and
regular AWD systems, LSD, drive shafts, half shafts, axles, torque
couplings, and driveline disconnects.