Filtering system operation and filter elements.

Filtering systems are the systems that allow our primary movers (engines) to operate as designed in any environmental situation for many hours longer than if they were not functioning properly.



If there was no oil filter the engine mechanical bearings would fail first and quickly. If the fuel filter was not there or operating properly the engine would die out as soon as water or debris entered the fuel injection pump. If the air filter was not there or damaged due to someone using air to blow the dirt out the engine would have high wear on the piston skirts and inside the liners on the walls.



All filters I have experienced have a flow direction, from the largest exposed surface mass through and out the smaller exposed surface mass. A circular or round shaped filter or element looking like a ring or a cylinder shape all filter from the outside circumference to the inner circumference.



Use the below links for good short videos on the different types of filtering systems.

Engine OIL Filtering System






Engine oil is a necessity when it comes to allowing an engine to last. The lack of oil fails an engine or bearings as well as parts reciprocating. The lack of oil will cause engine failure, failure of gears, and any type of bearing surface.





Engine oil viscosity is a measurement of the resistance to flow through a pre determined orifice in a specific time element. For example a 1/8" diameter oil passage to the crankshaft lubricating holes. With no crankshaft in the engine block each journal (plane bearing) has a hole connected to a passageway (like pipe conduit) 5 Main bearing journals and when an oil pump is rotated oil flow begins to fill the passages to the journal outlet holes. The faster the oil pump shaft is rotated the more flow of oil is forced through the passages.

NOTE : As pump input shaft increases so does the volume in fluid flow and at the point that all passages are filled and oil is flowing at the lower rate there would be no measureable pressure in those passages when simply allowing that oil to be pumped right out of the first journal lubrication hole. As oil pump oil volume increases flow the resistance to flow through the passages also increases due to the velocity of the fluid (oil). As the flow is increased at one point the pressure gauge begins to rise (1lb psi.) and each drop of oil more that is flowing and say from 1 gallon per minute (1 Gpm) the pressure builds up or is actually a backpressure due to resistance to oil flow.

Oil weight is calculated in numbers that indicate how long it takes for oil to flow through a tube using gravity as the pump. So a 0 weight rating is based on the amount of water that will flow through a conduit or passage of a specific diameter.

This is a clear point, Hawaii residents do not need to use synthetic oils or multi viscosity oils because of the temperatures here. It varies from mid to higher 60's to 90F maximum. There is no doubt that a straight weight engine oil has better lubricating properties at higher temperatures than a multi viscosity engine oil.

Fuel Filtering Systems



Fuel filter systems are important and the fuels used can cause damage to your fuel system parts. Wax is present in almost all oils and fuel, it is used to lubricate internal parts of an engine better than the original oil. Fuel has many additives that can plug filter systems. Watch the You tube video below for a better understanding of how a fuel filter system should work.


Air Filtering Systems



The air filtering systems filter out many different particles in the air including mold and will make the mass air flow sensor contaminated causing fuel injectors to operate with incorrect input in relation to a good running engine with no problems. It is important that the flow of air is as easy as it is designed. 

DO NOT use air in attempts to clean a paper element air filter of any kind unless using a regulator adjusted to 5 pounds psi. or less. That is enough air pressure to distort the fibers and widen the gaps in the paper that allow dirt to be seen inside the air tube of the intake manifold inlet hole. To properly clean an element use a container larger than the size of your air filter, fill the container with hot water and tide laundry detergent, agitate the filter in the water until clean and let air dry until filter is dry.

Watch the You Tube video below to view air filters operation.