XWD - koloi e fetang
Sistimi ea Saab XWD e lumella 100% ea torque ea enjene hore e fetisoe ka boiketsetso ka pele ho mabili a ka pele kapa a ka morao feela, ho latela litlhoko tsa ho khanna: ka lehlakoreng le leng, ts'ebetso e ntlafatsoa le maemong a mabe a tsela, ka lehlakoreng le leng, ESP Moeli oa karabelo o eketsehile.
Sisteme e sebelisa "lipelo" tse peli: e 'ngoe e ka pele ho phetiso e bitsoang PTU (unit take-off unit), e' ngoe e ka morao e bitsoang "RDM" (module ea koloi e ka morao), e hokahantsoeng ka theko. Li-module tsena ka bobeli li sebelisa melangoana ea melatsoana e mene ea moloko oa bone e le li arola torque, 'me ha o kopa o ka kenya phapang e lekanyelitsoeng ka morao. Ho fapana le litsamaiso tse tloaelehileng tsa viscous clutch (moo torque e fetisetsoang ho axle e ka morao kamora mohato oa slip, e phahamisang mocheso oa oli e ka har'a clutch, e eketsang viscosity ea eona), li-disc tsa clutch tsa XWD tsa li-clutch li tšoara li-torque tse ka pele khahlano le e ngoe le e ngoe tse ling ka khatello ea hydraulic ebe hanghang o kenya tšebetsong gear e khutlelang morao. Ho ea ka litsebi tsa Saab, sena se baka keketseho ea hanghang ea ho hula le ho potlakisa ho tloha ho emeng. Ha lisebelisoa li sebetsoa, torque ea enjene e ntse e ajoa ka mokhoa o tsoelang pele lipakeng tsa li-axle ke valve phepong ea phetisetso, e eketsang kapa e fokotsa khatello ea li-disc tsa clutch.
Ho bohlokoa ho totobatsa hore molemong oa ho fokotsa tšebeliso ea mafura likarolong tsa 'mila ka lebelo le sa fetoheng, ke feela 5-10% ea torque ea enjene e fetisetsoang ho barrel e ka morao.
