Hyundai Kona: Engine Control System / CVVT Oil Control Valve (OCV) Description and operation
Continuous Variable Valve Timing (CVVT) system advances or retards the valve
timing of the intake and exhaust valve in accordance with the ECM control signal
which is calculated by the engine speed and load.
By controlling CVVT, the valve over-lap or under-lap occurs, which makes better
fuel economy and reduces exhaust gases (NOx, HC) and improves engine performance
through reduction of pumping loss, internal EGR effect, improvement of combustion
stability, improvement of volumetric efficiency, and increase of expansion work.
This system consist of the CVVT Oil Control Valve (OCV) which supplies the engine
oil to the cam phaser or cuts the engine oil from the cam phaser in accordance
with the ECM PWM (Pulse With Modulation) control signal, the CVVT Oil Temperature
Sensor (OTS) which measures the engine oil temperature, and the Cam Phaser which
varies the cam phase by using the hydraulic force of the engine oil.
The engine oil getting out of the CVVT oil control valve varies the cam phase
in the direction (Intake Advance/Exhaust Retard) or opposite direction (Intake
Retard/Exhaust Advance) of the engine rotation by rotating the rotor connected
with the camshaft inside the cam phaser.
Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the PCSV connector.
3.
Measure resistance between th ...
Specification
Item
Specification
Coil Resistance (Ω)
6.9 - 7.9 [20°C (68°F)]
...
Other information:
Hyundai Kona (OS) 2018-2024 Service Manual: Components and components location
Components
1. Cylinder block
2. Ladder frame
3. Crankshaft
4. Crankshaft upper bearing
5. Crankshaft lower bearing
6. Thrust bearing
7. Main bearing cap
8. External damper flywheel
9. Crankshaft sproket
10. Crankshaft pulley
11. Wate ...
Hyundai Kona (OS) 2018-2024 Owners Manual: Auto start
To restart the engine in the auto stop mode
Manual transmission vehicle
Depress the clutch pedal with the gear in N (Neutral).
The auto stop indicator ()
goes OFF on the instrument cluster, when the engine is restarted.
Dual clutch transmission vehicle
Release the brake pedal.
When Auto Hold ...