DENSO injector

Denso has taken a servo actuated common rail injector and incorporated a pressure sensor into the high pressure inlet passage of the injector,  The pressure sensor enables a number of features that would otherwise be difficult to achieve with simply a rail based pressure sensor. One of these features is drift correction to accurately control the fuel injection amount ,injected by each injector as the system ages  Another possible option for achieving this objective is to monitor the nozzle control chamber pressure.