The lubrication system includes:
- oil pan,
- oil intake,
- oil pump,
- oil filter,
- various elements that provide oil supply to various moving parts of the engine.
Oil from the sump is pumped by the oil pump through the oil intake into the oil filter. After passing through the oil filter, some of the oil is fed through various channels in the cylinder block and through holes to the main bearings of the crankshaft. Through the holes in the crankshaft, oil is fed to the connecting rod bearings of the crankshaft. Lubrication of the cylinder walls and the lower part of the piston crown is carried out mainly by splashing from the oil holes of the connecting rods.
Some of the oil, after passing through the oil filter through the holes in the cylinder block, is directed to the cylinder head for hydraulic compensators and lubrication of each rocker arm, camshafts and valve stems.
After performing its functions, the oil returns to the sump under the force of gravity (by gravity).
(Information is copied from the website HyundaiBook)
To control the oil level in the pan, a measuring probe is installed. In addition, to control the oil pressure, an oil pressure switch sensor is installed.
Oil filter - full-flow type with paper filter element, installed on the outside of the engine. Inside the filter, before the filter element, there is a bypass valve, which opens when the pressure before the filter increases, which occurs in case of clogging of the filter element with polluting particles.
The 2.0L/2.4L engines are equipped with an external gear type oil pump. Inside it are the leading and driven gears, which rotate in opposite directions.
The 2.7L engine is equipped with a trochoidal oil pump, inside which are located the leading and driven rotors with internal gearing, which rotate in the same direction.