Kwinkqubo ye-MPI, ii-injection zihlulwe zibe ngamaqela, kwaye ii-injection kwiqela elifanayo zivuliwe ngexesha elifanayo. Umzekelo, i-4-cylinder machine injectors yahlulwe yangamaqela amabini, iqela ngalinye le-injection ezimbini, la maqela mabini e-injection atshintshana ngokutshiza ioli, i-injini ye-crankshaft nganye ijika kukho iqela le-injection yokutshiza ioli. Le nkqubo yee-injection idityaniswe ngokufanayo, i-ECU kuphela kwiqela elifanayo lazo zonke ii-injections zithumela uphawu olufanayo, ii-injection zikwaxeshanye ukuvula nokuvala, inkqubo ilula ukwenza lula i-circuit ye-elektroniki, kodwa kunjalo. ngenxa yeemeko ezahlukeneyo ze-injini yokungabikho kweenguqu ezingahleliweyo kumsebenzi, oya kuvelisa i-phenomenon ye-oyile kunye negesi kwi-manifold intake.

Inkqubo ye-SFI, i-injector nganye exhunywe ngokuthe ngqo kwi-ECU, ngokulandelanayo, inokwenziwa ngokuchanekileyo ngaphambi kokuba kuvulwe i-valve yokufaka i-injector, i-injector ingenziwa phakathi kwexesha le-injection ezimbini ukulungelelaniswa kwangoko komxube ukulungelelanisa utshintsho kwiimeko ezahlukeneyo. . Ke ngoko, i-SFI yeyona ndlela ichanekile nefanelekileyo yenkqubo yokutofa i-fuel enamanqaku amaninzi elawulwa ngombane, iinjini ezininzi zeemoto zisebenzisa le ndlela ngoku.