In the illustration below you can see how it works and you can also see the various magnetic fields that are necessary for this. However, these magnetic fields have a decisive negative effect: they collect all abrasion from the system and fix it to the piston rods of the struts, where it becomes a particularly damaging mixture. For this one reason we came up with the idea of ​​the magnetic filter to counteract this. Our idea was to position the magnetic filter right in the pressure outlet of the hydraulic pump. To develop only a magnetic filter that could withstand an oil pressure of up to 300 bar was too expensive and not for sale on the open market. So I chose the return line in low pressure mode. This alone was the reason for the magnetic filter in the ABC system. The engineers recognized this and made a design change in 2004. Hydraulic suspension struts without plunger travel sensor and without magnetism and lo and behold, the suspension struts last longer and are no longer as badly damaged as those with magnets.