The lubrication system includes:
- oil pan,
- oil pickup,
- oil pump,
- oil filter,
- various elements that provide oil supply to various moving parts of the engine.
The oil from the sump is pumped by the oil pump through the oil intake into the oil filter. After passing through the oil filter, part of the oil is fed through various channels in the cylinder block and through the holes to the crankshaft main bearings. Drillings in the crankshaft supply oil to the connecting rod bearings of the crankshaft. Lubrication of the cylinder walls and the lower part of the piston bottom is carried out mainly by spraying from the oil holes of the connecting rods.
Part of the oil after passing through the oil filter through the drillings in the cylinder block is sent to the cylinder head for hydraulic lifters and lubrication of each rocker, camshafts and valve stems.
After performing its functions, the oil under the influence of gravity (by gravity) returns to the tray.
A dipstick is installed to control the oil level in the sump. In addition, an oil pressure switch is installed to control the oil pressure.
The oil filter is a full-flow type with a paper filter element, mounted on the outside of the engine. Inside the filter, a bypass valve is installed in front of the filter element, which opens with an increase in pressure in front of the filter, which occurs in the event that the filter element is clogged with contaminants.
The 2.0L / 2.4L engines are fitted with an external gear type oil pump. Inside it are the driving and driven gears, which rotate in the opposite direction.
The 2.7 liter engine is equipped with a trochoid type oil pump, inside it there are male and female rotors with internal gearing, which rotate in the same direction.