Page 31 - BPW axles with air suspension Series O SL AL
P. 31

Air bag with split piston (Kombi Air bag)                   6.4


                                                              S Spplliitt  PPiissttoonn
                                                              This BPW development means there are no restric-
                                   Upper bag attachment
                                                              tions on using vehicles with air suspension for inter-
                                  Air bag cover               modal  transport.
                                                              The functional principle is simple. The trailing arms
                                                              and the air suspension airbags are in two parts: The
                                   Bump stops
                                                              trailing arms have a conical adapter,    and the air
                                   Air bag
                                                              bags have a special piston.
                                                              If the vehicle is raised after the air is exhausted
                                   Rolling piston
                                   (fibre-reinforced plastic)  from the suspension, the axles move downwards.
                                   (Air bag piston)           The air bags remain in the rest position, the trailing
                                                              arms with the adapter move downwards.
                                   Piston
                                                              When the vehicle is lowered to the ground, the air
                                                              suspension unit recombines with absolute safety.
                                   Bottom bag attachment
                                                              The air bags can neither fold nor crease. This
                                                              means a long service life is guaranteed.
                                                              When driving on road,  there is no  difference be-
                                                              tween the combination air bag and a conventional
                                                              BPW air suspension.
































                                                              R Reemmaarrkkss::

                                                              The shock absorber acts as an end stop in this
                                                              configuration, therefore it is  necessary to ensure
                                                              that shock absorbers with a corresponding length
                                                              and loading capacity are installed.

                                                              Split air bags are available as BPW 30 K or BPW
                                                              30.








           BPW-EA-Luft 1023701e                                                                            31
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