Uxinzelelo oluphezulu ivelufa yomda kaloliwe oqhelekileyo oveliswe yiYS ibandakanya uhlobo lweBosch kunye nohlobo lweDenso.Ivalve yokunciphisa uxinzelelo lwe-YS ilawula kwaye ilawula uxinzelelo lweoyile yendlela yeoli ephambili.Ukuze kuqinisekiswe ukusebenza okuqhelekileyo kwe-injini, uxinzelelo lweoyile ye-oyile ehamba phambili kufuneka ifaneleke.Ngeli xesha, i-valve yokunciphisa uxinzelelo iya kuvula ngokuzenzekelayo, kwaye ioli iya kubuyiselwa ngepompo yeoli, enokulawula Uxinzelelo lweoyile yendlela yeoli ehamba phambili.