| GMW14386 |
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.
The Operating Data Acquisition Master Test Procedure GMW14227
shall be referenced for more detailed information corresponding to
the following.
Purpose. Define the process for quantifying the
component/bracket assembly free acceleration levels at the vehicle
attachment locations for electrically powered components.
Foreword. The free acceleration of an
electrically powered component is one of the factors affecting
structure-borne noise. This quantity, with others, can be used to
calculate forces into the body or be combined to predict noise
levels in the vehicle passenger compartment.
Applicability. This test procedure is
appropriate to use for electrically powered system actuated and
customer actuated components that can be tested free-free without
additional mount fixturing, complex line routing, complex
electronic controls or complex fluid controls. Example components
include, but are not limited to, the following:
Secondary air injection (SAI) pumps.
Air suspension system compressors used for electronic leveling
and/or air suspension control.
Brake system electric vacuum pumps.
Fuel system electric vacuum pumps used in evaporative leak check
modules (ELCM).
Low temperature coolant pumps used for:
•Heating core cooling.
•Electric rear differential module (RDM)
cooling.
•High voltage battery cooling.
•Powertrain electric control module cooling such as the
transmission power inverter module (TPIM), the electric
motor/generator unit (MGU), the starter/generator control module
(SGCM), or to the powertrain electronics box (PEB).
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