Kia Carnival (2009+). Manual — part 145

2009 > G 3.8 DOHC >

DESCRIPTION

The CVVT (Continuously Variable Valve Timing) which is installed on the exhaust camshaft controls intake valve open
and close timing in order to improve engine performance.
The intake valve timing is optimized by CVVT system depending on engine rpm.
This CVVT system improves fuel efficiency and reduces NOx emissions at all levels of engine speed, vehicle speed,
and engine load by EGR effect because of valve over-lap optimization.
The CVVT changes the phase of the intake camshaft via oil pressure.
It changes the intake valve timing continuously.

OPERATION

The CVVT system makes continuous intake valve timing changes based on operating conditions.
Intake valve timing is optimized to allow the engine to produce maximum power.
Cam angle is advanced to obtain the EGR effect and reduce pumping loss. The intake valve is closed quickly to
reduce the entry of the air/fuel mixture into the intake port and improve the changing effect.
Reduces the cam advance at idle, stabilizes combustion, and reduces engine speed.
If a malfunction occurs, the CVVT system control is disabled and the valve timing is fixed at the fully retarded position.

1. The above figure shows the relative operation structures of the housing vane to the rotor vane.

2. If the CVVT is held a certain control angle, to hold this state, oil is replenished as much as oil leaks from the oil

pump.

The OCV (Oil-flow Control Valve) spool location at this time is as follows.
Oil pump ! Advance oil chamber (Little by little open the inflow side to the advance oil chamber) ! Almost
close the drain side
Be sure there might be a difference in the position according to the engine running state (rpm, oil temperature, and oil
pressure).

2009 > G 3.8 DOHC >

SPECIAL TOOLS

Tool

(Number and name)

Illustration

Use

09200-38001
Engine support fixture

- Removal and installation of transaxle

Automatic Transaxle System

General Information

2009 > G 3.8 DOHC >

SPECIFICATIONS

Engine type

DIESEL(J2.9)

GASOLINE(!-3.8)

Transaxle type

A5HF1

A5HF1

Gear ratio

1ST

4.497

!

2ND

2.442

!

3RD

1.686

!

4TH

1.233

!

5TH

0.868

!

REV.

4.586

!

Final gear ratio

3.333

!

T/M oil capacity(")※

10.7

10.9

※ The quantity in the chart above is for the reference. The actual filling quantity of the automatic transaxle fluid must
be set according to 'INSPECTION' or 'REPLACEMENT' procesure of the automatic transaxle fluid.

Recommended transaxle oil

Diamond ATF SP Ⅲ or SK ATF SP Ⅲ

Check & Replenishment

Every one year or every 20,000km

Every one year or every 15,000km only for European contries

Replacement

Private use

Normal use

No service required

Every 100,000km only for Australia

Every 90,000km only for European contries

Severe use(

＊)

Every 40,000km

Every 45,000km only for European contries

Business use

＊ Severe use(marked '＊') is defined as:

1. Driving on rough road(bumpy road, gravel road, snowy road, unpaved road etc.).

2. Driving on mountain road, ascent/descent.

3. Repetition of short distance driving.

4. More than 50% operation in heavy city traffic during hot weather above 32°C(89.6°F).

5. Police car, Taxi, Commercial type operation or trailer towing, etc.