Hyundai Accent Manuals

Hyundai Accent: [CVVT System Mode] - CVVT (Continuously Variable Valve Timing) System. Description and Operation - Exhaust Emission Control System - Emission Control SystemHyundai Accent: [CVVT System Mode]

Hyundai Accent RB (2010-2018) Service Manual / Emission Control System / Exhaust Emission Control System / CVVT (Continuously Variable Valve Timing) System. Description and Operation / [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 ...

Engine Control/Fuel System
...

See also:

Specifications
Description Specifications Limit General Type In-line, DOHC 　 Number of cylinders ...

Inspection
1. Inspect diaphragm spring wear which is in contact with a concentric slave cylinder bearing. 2. Check the clutch cover and disc surface f ...

Don't let ice and snow accumulate underneath
Under some conditions, snow and ice can build up under the fenders and interfere with the steering. When driving in severe winter conditions where this may happen, you should periodically check un ...

Hyundai Accent Manuals


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