System Description

DIG and PFI system 

This system has both function of DIG system (Direct Injection Gasoline) and PFI system (Port Fuel Injection). The adoption of this system enables more accurate injection control according to any driving conditions.

This system allows high-powered engine, high torque, low fuel consumption, and low exhaust emission by utilizing merits of the both systems of DIG (Direct Injection Gasoline) and PFI (Port Fuel Injection).

Direct fuel injection system 

The amount of fuel injected from the direct fuel injector is determined by the ECM. The ECM controls the length of time the valve remains open (injection pulse duration). The amount of fuel injected is a program value in the ECM memory. The program value is preset by engine operating conditions. These conditions are determined by input signals (for engine speed and intake air and fuel rail pressure) from the crankshaft position sensor, exhaust camshaft position sensor, mass air flow sensor and the fuel rail pressure sensor.

Port fuel injection system 

The amount of fuel injected from the port fuel injector is determined by the ECM. The ECM controls the length of time the valve remains open (injection pulse duration). The amount of fuel injected is a program value in the ECM memory. The program value is preset by engine operating conditions. These conditions are determined by input signals (for engine speed and intake air) from the crankshaft position sensor, exhaust camshaft position sensor and mass air flow sensor.