Denso valve orifice efere nke YS nwere ike dozie nsogbu nke mmetụta siri ike n'oge usoro mmechi ahụ, na-ebelata nrụgide mmetụta siri ike, na-ebelata vibration, na-abawanye ndụ nke valvụ orifice efere, si otú ahụ na-eme ka ndụ nke injector dịkwuo mma.