General Motors Company

Plenum - Heating Ventilation/Heating Ventilation Air Conditioning Inlet Water Ingestion (Includes Dynamic Water Separation Test) - Issue 3; English
 N GMW3079

Annotation

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. This test procedure determines the ability of the plenum to manage water and the Heating and Ventilation (HV) or Heating, Ventilation and Air Conditioning (HVAC) system to resist water ingestion under various static and dynamic test conditions.

This procedure also includes a Wet Road Test that is only applicable to vehicles having unconventional, side mounted, ventilation inlets.

Applicability. This procedure applies to all vehicles with an enclosed passenger or sealed cargo compartment. Note: Wet Road Test section of this procedure only applies to test vehicles with unconventional ventilation air inlets (see 1.1.1).

Note: Wet Road Test section of this procedure only applies to test vehicles with unconventional ventilation air inlets (see 1.1.1).

Remarks.

During dynamic tests an observer shall be required in test vehicle if a video camera is not used to monitor the HVAC air inlet for water leaks.

This procedure can be used for development or validation of water management.

This test does not evaluate all of the failure modes of plenum flapper valves. It assumes a production intent functioning flapper valve system developed by the Body Group.