INPUT/OUTPUT SIGNAL CHART

Sensor | Input signal to ECM | ECM function | Actuator
Crankshaft position sensor (POS) | Engine speed and piston position | Intake valve timing control | Intake valve timing control solenoid valve
Camshaft position sensor (PHASE)
Engine coolant temperature sensor | Engine coolant temperature
Combination meter | Vehicle speed*
*: This signal is sent to the ECM via the CAN communication line

SYSTEM DESCRIPTION
This mechanism hydraulically controls cam phases continuously with the fixed operating angle of the intake valve.
The ECM receives signals such as crankshaft position, camshaft position, engine speed, and engine coolant temperature. Then, the ECM sends ON/OFF pulse duty signals to the intake valve timing (IVT) control solenoid valve depending on driving status. This makes it possible to control the shut/open timing of the intake valve to increase engine torque in low/mid speed range and output in high-speed range.