Taħt kundizzjonijiet normali tal-ibbrejkjar, bħall-ibbrejkjar ħafif jew moderat, il-valv proporzjonali jibqa 'miftuħ biex jipprovdi pressjoni idrawlika ugwali għall-brejkijiet ta' quddiem u ta 'wara. Dan minħabba li l-ibbrejkjar ħafif ma jippermettix li jiġi trasferit biżżejjed piż minn wara għal quddiem tal-vettura, li jfisser li x'aktarx ma jseħħx il-qfil tar-roti ta 'wara.
When the hydraulic pressure exceeds the minimum level or "diversion point", the brake proportional valve only works under severe braking conditions. In this case, the piston connected to the rear brake circuit forces the valve to close, limiting the hydraulic pressure from the rear brake to 20-40 percent . This allows the front brake to have a higher hydraulic pressure than the rear brake, thereby preventing the vehicle from slipping during an emergency stop.
Wara li l-pedala tal-brejk tiġi rilaxxata, ir-rebbiegħa timbotta l-pistun li jimblokka l-valv fuq naħa waħda, sabiex iż-żejt idrawliku jgħaddi b'mod uniformi mill-brejkijiet ta 'quddiem u ta' wara.
