How Often Do You Change Oil?

Written by Thomas Yoon

In our previous issue, we discuss aboutrepparttar properties of lubricating oil and what to look for when buying or replacing them. Ezine Article

Today, we want to find out as to when to replacerepparttar 102784 lubricating oil. If you have a large quantity of lubricating oil to change, it is going to burn a hole in your pocket. So most plant operators try to preserverepparttar 102785 properties ofrepparttar 102786 lubricating oil for as long as possible.

One ofrepparttar 102787 most important functions of lubricating oil is to reducerepparttar 102788 friction betweenrepparttar 102789 moving parts of machinery. But there are other features to look at.

When do you know thatrepparttar 102790 oil needs to be changed? Below is a rough guide: 1. Viscosity has changed by 10% 2. Flash Point has dropped to 150 degree Celsius 3. Water Content has reached 2% 4. TBN, or Total Base Number has reduced by 20% 5. Insoluble Content has increased to 5% ofrepparttar 102791 oil

Due torepparttar 102792 oxidation ofrepparttar 102793 oil when exposed to heat and oxygen, repparttar 102794 viscosity ofrepparttar 102795 oil tend to reduce. Withrepparttar 102796 reduction of viscosity,repparttar 102797 film of oil between rubbing metal surfaces becomes more difficult to maintain. This results in metal to metal contact, micro seizures that leads to scuffing, abrasion and other damages.

In large diesel engines, fuel oil from dripping injectors or fuel pumps sometimes finds their way intorepparttar 102798 lubrication oil sump. This hasrepparttar 102799 tendency to reducerepparttar 102800 flash point ofrepparttar 102801 lubricating oil. In addition to reducingrepparttar 102802 viscosity that is detrimental to lubrication, this contamination with fuel oil can be quite dangerous. If there is a hotspot in any ofrepparttar 102803 rubbing parts, this can lead to a crankcase explosion.

Water can also find its way intorepparttar 102804 lubricating oil from leaks inrepparttar 102805 cooling water system o-rings or gaskets. In addition to reducingrepparttar 102806 lubricating properties ofrepparttar 102807 oil,repparttar 102808 presence of water inrepparttar 102809 oil can give rise to bacteria or fungal growth, which will quickly damagerepparttar 102810 oil properties as well as contributing to acid corrosion and oxidation ofrepparttar 102811 oil, changing repparttar 102812 chemical composition ofrepparttar 102813 oil itself. However, ifrepparttar 102814 water content is below 0.5%, it can still be removed by centrifugal purifiers.

Inside Knowledge About Diesel Engines

Written by Thomas Yoon

One ofrepparttar most reliable internal combustion engines around isrepparttar 102783 diesel engine. In many industrial installations, diesel engines are used as prime movers forrepparttar 102784 generation of electricity and for emergency air compressors.

It's true that they are rugged, but one ofrepparttar 102785 most important advantages of these engines isrepparttar 102786 fact that they can be started by manual cranking. In remote areas, diesel engines can be counted upon for starting up from scratch.

Once a small diesel engine is started, it can be used to drive a small electrical generator that can then be used to produce electrical supply for driving other machines like pumps, compressors, and for lighting.

How does a diesel engine work?

First there must be combustion of fuel. As we have discussed in our previous articles, combustion or burning of fuel occurs whenever there is sufficient heat, fuel and oxygen. When conditions are just right, combustion can be very rapid. Rapid combustion causes an explosion in an enclosed area. This is because ofrepparttar 102787 rapid built-up of hot gases duringrepparttar 102788 process.

In an internal combustion engine like a diesel engine, this rapid combustion, and built-up of hot gas pressure is used to push a piston away fromrepparttar 102789 enclosed combustion space.

The piston is attached to a crankshaft through a connecting rod. Because of this,repparttar 102790 engine is able to convertrepparttar 102791 linear movement of a piston to a rotating movement of a crankshaft.

The outward movement ofrepparttar 102792 piston turnsrepparttar 102793 crankshaft. However, repparttar 102794 momentum ofrepparttar 102795 turning crankshaft forcesrepparttar 102796 piston back again towardsrepparttar 102797 engine combustion space in a reciprocating movement.

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