2011 FORD KUGA Crank shaft mark

Timing marks
132
45
6
78
E62440
Description
Item
Exhaust camshaft pulley timing mark
1
Engine front cover with timing marks
2
Intake camshaft pulley timing mark
3
Intake camshaft drive gear
4Description
Item
Exhaust camshaft drive gear
5
Crankshaft timing belt pulley timing mark
6
Crankshaft timing belt pulley
7
Crankshaft
8
The front engine cover must always be fitted when
checking and adjusting the valve timing or timing
belt tension, as the timing marks for both camshaft
pulleys are provided on its front end.
Correct timing belt tension is ensured by the
automatic timing belt tensioner.
No direction of movement is specified when using
a new timing belt. If, however, the old timing belt
is reused, the direction of movement must be
marked prior to removal.
Once the timing belt has been correctly tensioned,
the engine must be rotated by hand two turns
clockwise at the crankshaft in order to allow a subsequent check of the timing belt tension and
adjustment.
Cylinder block
The cylinder block consists of three parts. These
are the cylinder block, the lower crankcase and the
sump pan. The cylinder block has five cylinder
liners made of cast iron, which cannot be replaced.
The pistons are made of a homogeneous aluminum
alloy with a graphite coating on the sides. This
coating serves to reduce friction and dampen noise.
The pistons are cooled from below via oil-spray
nozzles screwed into the cylinder block.
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303-01-
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Engine— 2.5L Duratec (147kW/200PS) - VI5303-01-
14
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E66328
303-1182
E68749
12.15. CAUTION: Make sure that theinstallation marks are aligned.
303-01- 41
Engine— 2.5L Duratec (147kW/200PS) - VI5303-01-
41
REMOVAL AND INSTALLATION
E112858
13. Using the special tool, align the crankshaft.
Install the Special Tool(s): 303-1182
14.Install the Special Tool(s): 303-1178
Torque: 10
Nm
16.Torque: 35Nm
E66324
303-1178
E113365
1
2

36.
E83911
37. CAUTION: Only rotate the crankshaftclockwise.
Rotate the crankshaft slowly until the crankshaft
stops.
Install the Special Tool(s): 303-1182
E66328
303-1182
38. CAUTION: Make sure that theinstallation marks are aligned.
E113883
G543500en2008.50 Kuga8/2011
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Engine— 2.5L Duratec (147kW/200PS) - VI5303-01-
107
ASSEMBLY
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Description
Item
CKP sensor
1
Tooth pitch
2
Flywheel ring gear
3
Reference mark
4
Voltage (sinusoidal-like signal curve)
5Description
Item
60-2 pulses per revolution of the
crankshaft
6
Tooth center
7
Reference mark
8
Tooth pitch
9
The acceleration of the flywheel at each power
stroke results in a change in the CKP signal.
During the power stroke, the combustion pressure
acting on the piston causes an acceleration of the
crankshaft and thus also of the flywheel. This is
apparent in the voltage curve from slightly higher
frequencies and amplitudes of the CKP signal.
Calculation of the ignition angle
Since propagation of the flame front in the air/fuel
mixture always takes the same amount of time, the
ignition of the air/fuel mixture has to take place
earlier or later depending on the engine speed.
The higher the speed, the earlier ignition must
occur. This ensures that maximum combustion
pressure is achieved immediately after Top Dead
Center and that maximum combustion pressure
acts on the piston.
When starting the engine, ignition timing is
determined by the CMP purely from the ignition
map and information on camshaft position (CKP
sensors) and crankshaft position (PCM sensor).
As soon as the engine is running, the following
data are used as a basis for calculating the ignition
angle:
• the engine speed,
• the engine load,
• the coolant temperature and
• the KS signal.
The ignition angle has a major impact on engine
operation. It affects
• engine performance
• exhaust emissions
• fuel consumption,
• combustion knock behavior and
• engine temperature.
The higher the engine load, i.e. the torque demand,
the richer the air/fuel mixture, the longer the
combustion period and the earlier the ignition. The PCM calculates engine load using the MAF
sensor signal, the throttle position and engine
speed. This is done using ignition maps that are
stored in the PCM. The ignition timing is adjusted
according to the operating condition of the engine,
for cold starting for example.
Ignition map
2
E96319
1
3
Description
Item
Engine load.
1
Engine speed
2
Ignition angle
3
The ignition maps were calculated in a series of
tests. Particular attention is paid to the emission
behaviour, power and fuel consumption of the
engine. The ignition map is stored in the data
memory of the PCM.
By adjusting the ignition timing it is also possible
to influence the engine speed to some extent
without having to change the throttle valve position.
This has advantages for idling stabilization, as the
engine speed and hence the engine torque respond
far more quickly to a change in the ignition timing
G1021908en2008.50 Kuga8/2011
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Electronic Engine Controls— 2.5L Duratec (147kW/200PS) - VI5303-14-
19
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