Self-Study Program

20
Audi-Space-Frame – ASF
®
SSP239_023
SSP239_071
The legroom for the rear passengers and the
ergonomically formed seating position have
been significantly improved by lowering the
rear part of the floor pan. The size and
complexity of the floor pan together with its
relatively thin wall thickness (for reasons of
strength) could only be achieved by a
construction-related deep-drawing
simulation.
Due to the single-part floor pan and the
higher positioning of the front part of the
floor pan in the region of the driver’s seat and
the passenger seat, additional space has
been made available for various ancillary
components and control units.
SSP239_027
Rear longitudinal
member
Longitudinal member -
sill connection piece
Attachment of the centre floor pan and the
rear end
The frame of the underbody structure
consists of straight extruded profiles joined
together by MIG fillet welds. As a result, the
cast joints that were still necessary in the
Audi A8 are no longer required.
The rear end also has a relatively simple
structure, consisting of longitudinal members
and cross pieces, and is attached to the
centre floor pan by another multi-functional
large cast part.
This “longitudinal member - sill connection
piece” includes the rear axle connection, the
spring plate support, the insert for the trolley
jack and the manufacturing mounting points.
Ancillary and outer shell panels