OVERVIEW
The Si6 petrol engine is a 3.2 liter, inline 6-cylinder, naturally aspirated unit, with 4 valves per cylinder, operated by 2 overhead camshafts. The engine emissions comply with EURO 5 (European Union emission regulations) and Ultra Low Emissions Vehicle (ULEV) II legislative requirements and employs catalytic converters, electronic engine management control and pressure controlled crankcase ventilation to limit the emission of pollutants. The cooling system is a low volume, high velocity system. The Engine Control Module (ECM) controls the fuel injection system and the ignition system.
The cylinder block is of aluminum alloy construction with cast iron liners and a pressed aluminum bedplate section bolted to the bottom of the block to improve lower structure rigidity. The single-piece oil sump is also of a pressed aluminum construction. The cylinder head and the camshaft bearing housing are manufactured from cast aluminum. The exhaust manifolds are of a fabricated stainless steel twin skin design incorporating catalytic converters and a molded plastic acoustic cover is fitted over the upper engine to reduce engine-generated noise.
Scheme 2
| Item Number | Description |
|---|---|
| 1 | Camshaft bearing housing |
| 2 | Cylinder head |
| 3 | Cylinder block |
| 4 | Bedplate section |
| 5 | Oil pan |
| 6 | Gear housing |
PRINCIPLES OF OPERATION
For a detailed description of the engine system, refer to the relevant Description and Operation section in the workshop manual. Engine - 3.2LRefer to the relevant Description and Operation section in the workshop manual. REFER to: Description & Operation .