Coping reduced space with flexible filter element shapes for engine air filtration

D. Schmid*, T. Dirnberger, M. Röhrig, S. Epli, M. Lehmann MANN+HUMMEL GMBH, Germany

Installation space in an engine compartment is precious and limited. Comfort functions, turbocharging, diesel particle filters and much more have drastically reduced the available space under the hood in the last decades. A better utilization of the design space given by the OEMs is required to fulfill their raising demands on an engine air filter system.

The traditional shape of an air filter element is rectangular. In a next development stage trapezoidal shapes could be found in the market. The production technology was further developed to produce filter elements in polygonal forms.

We are going to discuss various options how to achieve the filtration requirements in today’s engine architecture. In addition to theoretical calculations some real challenges facing in the development and manufacturing of engine air filter elements are shown. The pros and cons of different designs are compared. The options and challenges of the sealing profiles and bellows in terms of design and process are discussed.

After having look at the methodology we check how to combine the different options to achieve the customer requirements like dust holding capacity, pressure loss and acoustics.

Session: G16 - Air Filtration
Day: 15 March 2018
Time: 13:00 - 14:15 h

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