Air Intake

IHKA E31 AIR INTAKE







As on the E32 system, fresh air, recirculating air; or a combination of these may be drawn into the IHKA system for heating or cooling. The same components are involved, and operating strategies are nearly the same.

One significant difference between IHKA E32 and E31 air intake Systems is that the microfilter, mounted inside the E32 housing, is mounted outside the housing on E31 vehicles.

The filter fits inside a housing that mounts to the front side of the engine compartment bulkhead. Fresh air flows down through ducts behind the hood and into the filter housing. Only after passing through the microfilter does the filtered air enter the IHKA housing assembly through the fresh air flaps.







Also, on the E31, there are two filters, mounted side-by-side, and they are serviced from the engine compartment, instead of the cabin.