Inkampani ye-YS ayiboneleli kuphela ngoluhlu oluphuculweyo lwe-P kunye nochungechunge lwe-S izitofu zamafutha, kodwa ikwavelisa ii-injector zesibaso zikaloliwe eziqhelekileyo zenkqubo yamafutha kaloliwe aqhelekileyo njengeyona mveliso iphambili.
Iimpawu eziphambili ze-YS eziqhelekileyo zesitofu se-fuel kaloliwe zezi zilandelayo: ixesha lokutofa, ubuninzi benaliti kunye nesantya sokutofa zilawulwa yivalve ye-solenoid kwi-injector, inokulungelelanisa ngokuguquguqukayo ubuninzi be-pre-injection kunye ne-post-injection, kunye nekhefu. ukusuka kwinaliti ephambili phantsi kweemeko ezahlukeneyo.
I-YS isitofu esiqhelekileyo sikaloliwe sinoxinzelelo oluphezulu lwenaliti, isiphumo esihle se-atomization, ukonga amafutha, ukunciphisa ingxolo kunye nezinye iimpawu kunye nokusebenza okuphezulu.