Engine; And 2.2 Litre Direct Injection Petrol Engines; Features - Alfa Romeo 159 Training Material

ENGINE

3. ENGINE

3.1 1.9 AND 2.2 LITRE DIRECT INJECTION PETROL ENGINES

3.1.1 Features

The 1.9 and 2.2 direct injection petrol engines are the first of a new generation of Alfa Romeo four-cylinder petrol
engines created to replace the current 2.0 JTS petrol family. The main features of these powerful, sophisticated
multivalve engines are their light weight (both the cylinder head and the crankcase are made of aluminium) and their
performance (specific power out in excess of 60kW/l, output torque higher than 100Nm/l).
The main features of the new engines are:
four-cylinder in-line arrangement
twin overhead camshaft and 16 valve timing
direct petrol injection
continuous twin variable timing (on suction and exhaust side)
aluminium alloy engine block, cylinder head, oil sump and timing cover
dry insert cylinder liners in engine block
hydraulic tappets
two chain driven countershafts in engine block
internal water pump
oil filter built into engine block
chain driven timing
light weight
electronic accelerator and motorised throttle body
pencil-coil ignition system with spark plug connectors integrated in a single module
low consumption and emissions (Euro 4 compliant)
four lambda sensors
Type 4 2-in-1 exhaust manifold.
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