Pistons and Rods (page 2 of 2)

The oil, after having been filtered by the cartridge filter (total flow with safety by-pass valve, which guarantees that the oil passes even if the cartridge becomes clogged up), makes it way towards the oil minimum pressure warning light sensor, and arrives at the main longitudinal pipe which runs around the engine block through a transversal channel. The oil is then sent along secondary ducts to lubricate the main and rod journals. A vertical duct in the engine block and cylinder heads lubricates the cam shaft supports. From the main duct the oil is sent to the turbo charger through an external tube to lubricate the control shaft and from here directly to the sump.

To improve the cooling of the piston skirts, sprayers with a small built in ball valve which opens when the pressure reaches 1.25 ÷ 1.75 bar are located on the engine block; this guarantees that the main supports are sufficiently lubricated during engine start up and at idle speed. The lubrication system is equipped with an oil vapour recirculation system which allows the vapours originating from the engine block to be recovered. An oil temperature sensor is also fitted on the oil sump whilst the engine oil level sensor is positioned on the oil pump cover.

1. Suction device with wire gauze filter
2. Oil pump
3. Pressure relief valve
4. Minimum oil pressure warning light sensor
5. Oil filter support with thermostatic valve
6. Oil filter with safety by-pass valve
7. Engine oil cooling radiator
8. Oil delivery duct to various parts
9. Oil vertical delivery duct to cam shaft supports
10. Oil delivery tube to turbocharger
11. Oil return to sump from turbocharger tube
12. Sprayers