Design features of the engine lubrication system 6B31 Mitsubishi Outlander XL 2007 - 2012

The engine lubrication system is combined: the most loaded parts are lubricated under pressure, while the rest are lubricated either by directed spraying or spraying of oil flowing from the gaps between mating parts. The lubrication system is pressurized by a gear oil pump mounted externally at the front of the cylinder block and driven from the front end of the crankshaft.

Oil pump Outlander HL

The pump sucks oil from the engine oil sump through an oil receiver with a strainer and through a full-flow oil filter Outlander HL with a porous paper filter element supplies it to the main oil line located in the body of the cylinder block on the left side.

Main engine oil line 

Oil supply channels to the main bearings of the crankshaft depart from the main line.

Channels for supplying oil to the main bearings of the crankshaft of the engine

Nozzles are installed in the beds of the main bearings, through which oil is sprayed onto the cylinder walls and piston bottoms. Oil is supplied to the connecting rod bearings through channels made in the body of the crankshaft. A vertical channel for supplying oil to the camshaft bearings departs from the main oil line.

To lubricate the camshaft bearings, oil from the vertical channel enters the central axial channels of the camshaft through a radial hole in the neck of the third bearing and is distributed through them to the rest of the bearings.

The camshaft cams are lubricated by oil coming from the central axial channel through the radial holes in the cams. Excess oil is drained from the head of the block into the oil sump through vertical drainage channels.

Drainage channels in the engine cylinder head

Source:  carpedia.club