By Majeed Ahmad, contributing editor

W. L. Gore & Associates has
introduced a new venting solution that it claims meets the stringent
reliability requirements for automotive electrical and electronic modules
(EEMs). The High WEP Series boasts a greater level of ingress protection
without sacrificing airflow performance or temperature resistance.

The new venting solution delivers
nearly double the water entry pressure (WEP) resistance while maintaining
minimum airflow of 15 l/h/cm2 at 7 kPa. This makes it highly effective in
blocking the ingress of water, not just during sprays and splashes, but even
during deep-water wading events.


Moreover, its chemically resistant
GORE Membrane boasting 100% ePTFE provides lasting hydrophobic and oleophobic
protection, even
when exposed to brake or other automotive fluids. Gore claims that the High WEP Series has been engineered
specifically for smaller, more densely configured enclosures in rugged
automotive environments, particularly for exterior-mounted EEMs.

The miniaturization trend in vehicles
is creating added challenges for weight reduction, component density, and
thermal management. At the same time, extended OEM warranty periods demand
corresponding increases in EEM reliability and life expectancy.

Gore’s new venting solution provides temperature stability from –40°C
to 150°C. Many
under-hood applications — such as
actuators for turbocharger flaps or exhaust gas recuperation valves — currently require this level of temperature
resistance to reliably withstand normal operating conditions.

Furthermore, for motors, sensors, control units,
actuators, and other sensitive EEMs, the low-profile High WEP Series can also
help to reduce the complexity of enclosure design and testing. Next, installation
via ultrasonic welding is fast and easy and creates a secure, durable bond to
the grades of plastics like PBT and PA used for electronic modules.