184000294 - INTRODUCTION - ENGINE LUBRICATION SYSTEM
Engine oil supply circuit
GENERAL VIEW
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1. Suction pipe with filter mesh2. Oil pump3. Oil filter cartridge4 Engine oil cooling radiator5. Main longitudinal duct6. Jets (piston skirt cooling)7. Vertical duct (camshaft support lubrication)8. Oil return to the sump9. Engine oil pressure warning light switch10. Turbocharger lubrication pipes
Engine oil pump
The engine oil is drawn in from the sump by means of the vacuum created by the rotation of the sprockets fitted on the crankshaft.Vacuum is present between the sprocket separating wall (2) and the oil sump suction pipe.Pressure instead develops after the separating wall (2) in all the oil delivery pipes (4).When the pressure exceeds 5 bar, the force exerted on the limiting valve (5) overcomes the reaction of the spring below and moves the valve to open the connecting pipe between the pressure chamber (3) and the low pressure chamber (1).
