INTAKE SYSTEM SYSTEM DIAGRAM

The turbocharger system is comprised of the Variable Nozzle (VN) type turbocharger, turbocharger control actuator incorporated into the turbocharger and ECM.

The turbocharger has a nozzle vane which opens and closes to control the volume of the exhaust gas flowing into the turbine. This, in turn, controls the boost pressure. When the nozzle vane moves towards the closing direction, the pressure increases. When the vane moves towards the opening direction, the pressure decreases.

The turbocharger actuator built on the turbine side activates the nozzle vane. The nozzle vane position sensor built on the actuator detects the opening angle of the nozzle vane. The nozzle vane position sensor signal is sent via the turbocharger control actuator to the ECM. Then, based on the signal, the ECM actuates the actuator.

The ECM sends a target nozzle vane position signal to the turbocharger control actuator to obtain the nozzle vane position for the optimal pressure in accordance with the driving conditions.