Intake System (W/O Dpf) System Diagram

w/ EGR Cooler:
The swirl control valve is mounted on the intake manifold. The Vacuum Switching Valve (VSV) for swirl control valve changes the vacuum to actuate the actuator. First, the ECM determines the opening angle of the swirl control valve. Then it uses the swirl control valve VSV to change the vacuum applied to the actuator's diaphragm to open and close the swirl control valve.

w/o EGR Cooler:

1. The manifold absolute pressure sensor detects the manifold pressure by using a built-in sensor unit. The ECM determines the basic injection duration and injection advance timing based on the output voltage by the manifold absolute pressure sensor.
   
2. The manifold absolute pressure sensor monitors the absolute pressure inside the intake manifold (default is 0 kPa (0 mmHg, 0 in.Hg)), so that the ECM controls the air-fuel ratio at the proper level under any driving conditions, without the influence of fluctuations in the atmospheric pressure due to factors such as high altitude, etc.
   


1. 
   
   
   
   

   Text in Illustration (w/o EGR Cooler)

   *1	Accelerator Pedal Sensor	*2	ECM
   *3	Air Cleaner	*4	Mass Air Flow Meter (w/ EGR System)
   *5	Diesel Throttle Body	*6	Manifold Absolute Pressure Sensor
   *7	Turbocharger	*8	Engine Coolant Temperature Sensor
   *9	Crankshaft Position Sensor	-	-