![Kia Rio: [CVVT System Mode] - CVVT & Camshaft - Cylinder Head Assembly - Engine Mechanical System - Kia Rio UB 2012-2024 Service Manual](images/pages/small/3.png)
Kia Rio: [CVVT System Mode]
| (1) Low Speed / Low Load |
(2) Part Load |
|
|
| (3) Low Speed / High Load |
(4) High Speed / High Load |
|
|
| Driving Condition |
Exhaust Valve |
Intake Valve |
||
| Valve Timing |
Effect |
Valve Timing |
Effect |
|
| (1) Low Speed /Low Load |
Completely Advance |
* Valve Under-lap * Improvement of combustion stability |
Completely Retard |
* Valve Under-lap * Improvement of combustion stability |
| (2) Part Load |
Retard |
* Increase of expansion work * Reduction of pumping loss * Reduction of HC |
Retard |
* Reduction of pumping loss |
| (3) Low Speed /High Load |
Retard |
* Increase of expansion work |
Advance |
* Prevention of intake back flow (Improvement of volumetric
efficiency) |
| (4) High Speed /High Load |
Advance |
* Reduction of pumping loss |
Retard |
* Improvement of volumetric efficiency |
Operation Principle
The CVVT has the mechanism rotating the rotor vane with hydraulic force
generated by the engine oil supplied to the advance or retard chamber in accordance
with the CVVT oil control valve con ...
Removal
1.
Remove the cyliner head cover.
(Refer to Timing System)
2.
Remove the timing chain cover.
(Refer to Timing System)
...
See also:
Components Location
1. AVN (A/V & Navigation head unit)
2. Midrange speaker
3. Roof antenna (GPS Radio)
4. Front door speaker
5. Rear door speaker
6. Antenna feeder cable
7. Feeder ca ...
26 Brake Control Solenoid Valve(26/B_VFS) Removal
Replacing an on/off solenoid valve (SS-A, SS-B) does not require
additional hydraulic pressure adjustment; however, the ...
Removal
1.
Disconnect the negative (-) battery terminal.
2.
Remove the crash pad lower panel.
(Refer to the BD group - "Crash pad")
...
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