Types of Lubrication Systems: Lubrication is the admittance of oil having relative motion between two surfaces and it also reduces wear and tear between the parts having relative motion.
The purpose of lubrication maybe one or more of the following.
Before discussing on Types of lubrication systems, we need to discuss about Properties of Lubricant.
There are two types of Lubrication systems which are presented below:
The detailed explanation is as follows...
Splash lubrication is commonly used in early motorcycles engines.
This technique is used in lawn mower and motors or outboard boat engines that should have sufficient amounts of oil in the trough to fully lubricate the machine.
The components of Splash Lubrication System are follows:
It is used to store the oil which is passed through the oil galleries for the proper lubrication.
It is used to filter the impurities present in the oil such there should not be any blockage at any part.
It is the major part of the lubrication system because it is used to transport the fluid from the crankcase to all the parts of the engine.
These are provided just below the scoop of piston such that when the piston is in its reciprocating motion, the scoop of piston lifts the oil from the oil troughs such that the oil reach to all the parts of the piston for the lubrication.
The reciprocation motion of piston is converted into the rotory motion of crankshaft in the engine cylinder. The power obtained from the crankshat will be transmitted to all the parts of the vehicle.
It is connected at the end of the piston and the scoop of piston lifts the oil from the oil troughs such that the oil reach to all the parts of the piston for proper lubrication.
It plays an important role in IC engines. It is present in the engine cylinder and it converts the reciprocation motion into rotory motion of the crankshaft.
This camshaft consists of cams which are used for operating the valves in the internal combustion engines.
Oil Pressure Gauge:
It is used to measure the pressure of oil in the engine cylinder.
Firstly oil is filled in the Crankcase.Oil strainer will remove any impurities present in the oil and the oil pump will supply it to all the parts including oil troughs.
In the splash lubrication system, oil is splashed up from the oil trough or oil trays in the lower part of the crankcase with each revolution of the crankshaft to produce the oil splash.
The oil is thrown upward either as droplets or fine mist and provides adequate lubrication to piston pins,piston rings, valve mechanisms, cylinder walls etc.Oil flows through the holes drilled inside the crankshaft and main bearing to lubricate them.
This system is too uncertain for automotive applications.
Make sure, the crankcase must be filled completely with the oil so that, oil level in the troughs is maintained.
Full of oil in the trough results in oil consumption and excess lubrication whereas slightly low level of oil results in inadequate lubrication and failure of the engine.
Here are some advantages of Splash Lubrication System:
In some of the automobiles also, the splash lubrication system is used where the machine can do little effort compared to the IC engines.
Also, there are some disadvantages of Splash Lubrication System and those are:
Note:Due to the limitation of Splash Lubrication System, Pressure Lubrication system has came into existence.
The Pressure Lubrication system is universally used in modern car engines.
The Pressure Lubrication system has come into picture because the Splash Lubrication system is not suitable for automobile engines due to the absence of positive lubrication.
All the components mentioned above are also the components of Splash Lubrication system.Therefore, they are not explained here again.The only compoent which is different from the splash system is Oil Galleries.
These are in the form of pipes which serves the best lubrication compared to splash lubrication system because here there is no case of leakage and the oil will be passed to all the parts of the engine for better lubrication.
In this system, Oil is taken from the wet sump through the strainer by the pump and delivers it at a pressure of 200 to 400 Kpa to the main oil gallery.
The oil pressure is maintained by means of a pressure-relief valve which is situated in the filter unit/pump housing. An oil pressure regulator ensures that the oil pressure level is maintained properly.
For inline engines,one main gallery is used whereas for V-Engines one/two main galleries are used.
The oil filter removes all the dust particles present in the oil and supplies clean oil to all the oil lines. The pressurised oil flows through the oil lines and galleries so as to lubricate the moving engine parts.
Oil from the main gallery flows through the holes drilled inside the crankshaft and main bearing to lubricate them.The oil sprout connected with the gallery, forces the oil upwards to lubricate the piston and all the parts of it from inside.
Oil flows through the oil rings to lubricate and form a thin film around the cylinder walls. After all the parts are lubricated in first gallery, the oil will be pumped to the second gallery which can lubricate all the parts connected with camshaft.
The sprouts connected to the gallery helps in lubricating camshaft,valves and valve springs. After lubricating the engine parts, oil begins to flow downwards through a seperate passage to the sump.A pressure gauge calculates the oil pressure in the system and displays it on the dial.
Due to the presence of oil galleries, the oil will be passed through them to reach all the components of engine cylinder and thereby there will be no wear and tear takes place among the mating parts.
In this system also, if oil was not poured properly into the engine for every servicing then despite of the pressure system also, the parts will wear.
This is the detailed explanation of Types of Lubrication Systems: Splash Lubrication System, Pressure Lubrication System in a detailed way.
If you have any doubts, feel free to ask in the comments section.