4.9.6 Oil pan, crankcase
Oil pan is most often a pressed part, which looks like a bowl or kitchen baking pan. This is the container, which contains the engine oil. From there it is fed through the oil receiver (Figure 4.38) to all rubbing parts and flows down there after lubricating these parts. The dipstick, with the help of which the engine oil level is measured, is described the "Maintenance" chapter. This dipstick, or rather its thin plate with applied marks, is inserted precisely into the oil pan.
Note
The engine oil level is often checked for a cold engine.
Note
Oil shall be poured into the sump to a certain level, which must be maintained during engine operation. In case if the crankcase is overfilled, oil is excessively sprayed on the cylinder walls and can enter the combustion chambers. This will increase the carbon formation in them. Foaming of the oil is also possible. It can lead to a significant drop in pressure in the system and, if not stopped in time, to engine failure. It is also obvious that a lack of oil in the system can lead to the so-called oil starvation, which is why there are frequent cases of cranking of the liners in the main bearings of the crankshaft.
The crankcase is the largest body part of the engine. It can be cast together with the cylinder block or as a separate piece bolted to the block.
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