Geely Emgrand X7. Manual part — 235

angle of the intake valve during idling is 13?.

3
4

2

1

5

FE02-2066b

1. Rear

chamber

2. Locking

pin

3. Advance

cavity

4. rotor

blade

5. support

(4) Lag

Process

When the engine is in normal operation, the oil pressure generated by an oil pump
plays the role on the VVT electromagnetic valve.

ECM applies pulse width modulation

signals to the VVT solenoid valve. If ECM wants the VVT to adjust the intake valve to the
maximum lagging position, ECM controls the VVT solenoid valve to open by a degree of 0% and
the oil pressure enters the lagging cavity of teh VVT actuator. Thus, the VVT rotor blade produces
the displacement in the same direction with respect to the crank angle to ultimately remain in the
maximum position.

1

FE02-2067b

1. Rear

chamber

939

2.13.4 Component position

2.13.4.1 Part position of VVT system

3

2

1

NL02-2013e

1. VVT

actuator

2. VVT

electromagnetic

valve

3. VVT electromagnetic valve filter element

940

2.13.5 Part disassembly drawing

2.13.5.1 Cylinder Hood Cover

6

1

7

4

3

4

5

2

6

8

8

4

4

4

FE02-2069b

1. Cylinder cover hood

2. Sealing washer of cylinder cover hood

3. engine lubricating oil cover

4. Cylinder head fixing bolt

5. Cylinder head fixing bolt pad

6. Cylinder head fixing nut

7. Crankcase

forced ventilation valve

8. Engine hood fixing bolts

941

2.13.5.2 Camshaft

10

9

11

9

1

3

6

7

8

5

4

2

FE02-2070b

1. air

intake

camshaft

2. air

exhaust

camshaft

3. VVT

actuator

4. Exhaust camshaft drive chain wheel

5. Exhaust chain camshaft drive chain

wheel tightening bolt

6. VVT actuator tightening bolt

7. Timing chain tensioning rail

8. Timing chain guide rail

9. Timing chain guide rail fixing bolt

10. Timing chain tensioning guide rail fixing

bolt

11. Timing chain

942