Alfa Romeo 159 Training Material page 57

ENGINE
The diagrams on the top show the gearbox shaft speed in rpm; the diagrams underneath show the gearbox shaft
acceleration (vibrations).
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1. Specific cam profiles
2. Cylinder head
3. Variable timing
4. Variable timing solenoid valves
5. Timing sensor
6. Fuel high pressure pump
7. Camshaft timing phonic wheel
FUNCTION: To contain and correctly support the various timing parts, suction and exhaust conduits, spark plug
houses and injector housings. It determines the shape of the combustion chamber.
MATERIAL: The cylinder head for 1.9 and 2.2 litre engines is an aluminium alloy casting.
FEATURES:
- Plastic cylinder head cover.
- Spark plug holes slanted towards the exhaust conduits by 3 mm.
Traccia Didattica Alfa 159-en-ridotta
ALFA 159 TRAINING MATERIAL
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