TURBOCHARGER SYSTEM ILLUSTRATION
The turbocharger system is comprised of the Variable Nozzle (VN) type turbocharger and ECM.
The turbocharger has a nozzle vane which opens and closes to control the volume of the exhaust gas flowing to the turbine. This, in turn, controls the boost pressure. When the nozzle vane moves in the closing direction, the pressure increases. When the vane moves in the opening direction, the pressure decreases.
The turbocharger actuator built onto the compressor housing side actuates the nozzle vane. The nozzle vane position sensor built onto the actuator detects the opening angle of the nozzle vane. The ECM receives a nozzle vane position sensor signal. Based on this signal, the ECM operates the DC motor and controls the nozzle vane opening angle.
The ECM controls the nozzle vane position according to the driving conditions in order to create the optimal pressure.
| *1 | ECM | *2 | Mass Air Flow Meter Sub-assembly |
| *3 | Air Cleaner Assembly | *4 | Turbocharger Sub-assembly |
| *5 | Turbocharger Actuator - Turbocharger Variable Nozzle Motor - Turbocharger Variable Nozzle Sensor |
*6 | Intercooler Assembly |
| *7 | Intake Air Temperature Sensor | *8 | Diesel Throttle Body Assembly |
| *9 | Diesel Turbo Pressure Sensor | *10 | Engine Coolant Temperature Sensor |
| *11 | Crankshaft Position Sensor | - | - |
INTAKE SYSTEM WIRING DIAGRAM
| *a | Shielded |
| *b | Diesel Throttle Body Assembly |
| *c | Engine Coolant Temperature Sensor |
| *d | Intake Air Temperature Sensor |