tag:blogger.com,1999:blog-78152819444330321522024-03-09T00:46:32.795+05:30World of Mechanical EngineeringHere You will find useful knowledge about Mechanical Engineering.MechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.comBlogger108125tag:blogger.com,1999:blog-7815281944433032152.post-33555046189317274172009-06-24T22:12:00.004+05:302011-01-24T14:35:40.095+05:30Parts of Steam Engine and Its Functions.Steam engines are used very widely in engineering up to 1930 for generation of power but after it are replaced by internal combustion engine. Diesel engine, petrol engine are the common example of internal combustion engine. Steam engines are widely used on ships in old days at present they are replaced by diesel engines. To disclose some more important information about this old machine, I am MechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-17589398331497221642009-06-23T20:50:00.002+05:302011-01-24T14:33:53.813+05:30Important Characteristics in formation of Steam.When any liquid is heated at constant temperature, it starts changing in vapour condition. A vapour is a mixture of gas and liquid particles in suspension and it can be liquefied by moderate changes of pressure or temperature. The process of vapour formation from liquid state has some definite characteristics to follow in steam engine,Characteristics of Steam formation.01) The heat supplied MechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-89323083145178555282009-06-22T22:42:00.003+05:302011-01-24T14:51:55.712+05:30Various Important Properties of Substance.In thermal engineering, State means the exact condition of a substance and the variables which determine the state are known as properties. These properties are sub-divided into principal properties and fundamental properties. Fundamental properties are,01) Pressure02) Volume03) TemperatureAbove properties are also known as basic properties as they may be found out by direct observation or simpleMechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-91516605024183827382009-06-20T20:43:00.002+05:302011-01-24T14:52:42.845+05:30How to Inspect Steam Boiler by Different Ways?For power generation through steam turbine or steam engine, steam is required. Steam is also required for industrial process work, hot water supply and heating installations etc. This steam is produced with the help of utility called boiler.A boiler is a closed vessel where combustion of fuel produces heat to convert water into steam at the desired temperature and pressure.For the safe operation MechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-10910748113117494732009-06-19T20:15:00.003+05:302011-01-24T14:23:43.190+05:30Various Methods For Compounding of Steam Engines.For greater efficiency and less space per horse power, high pressure steam is used in steam engine. Now with the use of this high pressure steam the range of expansion is correspondingly increased. If full expansion is takes place in single cylinder the walls of the cylinder to be made very thick to withstand the high pressure and also required a heavy flywheel. All this made a simple steam MechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-61419728252576150602009-06-18T20:39:00.002+05:302011-01-24T14:53:33.065+05:30What Are The Advantages of Compound Steam Engine?According to expansion of steam, the engines are classified as simple steam engine, compound or multi expansion steam engines, out of this; compound steam engines have more advantages than simple steam engine. The main advantages are as listed below,01) Light weight cylinders are required in compound steam engine. The cylinder in simple steam engine is required to make strong and large enough to MechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-56704358781742091462009-06-17T16:22:00.002+05:302011-01-24T14:54:03.680+05:30How to Classify of Steam Engines in Different Way?In old days reciprocating steam engines are used to convert heat energy into mechanical energy. Now a day’s steam turbine or internal combustion engines are used for the same work. But steam engine has many specialized applications. These steam engines can be classified according to its construction and operating features. Detail classification is covered as below.A) Position of Cylinder: - MechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-82924171086503694712009-06-12T13:06:00.002+05:302011-01-24T14:54:51.449+05:30What Are The Essential Qualities of Good Lubricant?To reduce the frictional losses between metal to metal rubbing or sliding parts, lubrication is required. Below are the some essential qualities of a good engineering lubricant.01) Viscosity: - When any lubricant offered resistance to the deforming forces, it is called viscosity of the lubricant. Good quality lubrication oil must maintain sufficient viscosity at higher temperatures and it should MechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-25616523751249418182009-05-11T15:01:00.005+05:302011-01-24T14:55:16.258+05:30Tips about Suction and Discharge Valves Used In Reciprocating Air Compressor.The performance of air compressor is mostly depending upon the condition of suction and discharge valves. These valves are very important part in any reciprocating air compressor and engineering field. That’s why due care must be required. Every valve requires a periodic inspection and maintenance. Here you will find, important information about suction and discharge valves used in Chicago MechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-10353326064724737962009-05-06T13:15:00.003+05:302011-01-24T14:55:43.665+05:30How To Start New Reciprocating Air Compressor.Below points are most essentials in air compressor engineering.01) Be certain leveling screw in frame base has been backed off, and foundation bolts are tightened properly.02) Clean off all accumulated dirt from exterior of compressor and electric motor.03) Remove covers, tapes, wrapping from openings, which had been blanked and sealed.04) Open frame top cover and check all connecting rods, boltsMechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-77535880338146148562009-05-05T15:20:00.003+05:302011-01-24T14:56:28.935+05:30Different Combustion Chambers Provided In Diesel Engines.When we are going to design the combustion chamber of diesel engines the main consideration we have to keep in mind is, high compression ratio & sufficient turbulence of air. For high compression ratios overhead valve s are more preferred than side valves. Below are the some shapes of combustion chambers discussed.01) Open or Direct Injection ChamberFor moderate & low speed engines this MechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-69871960373736058122009-02-18T16:26:00.002+05:302011-01-24T14:27:03.301+05:30Governing Methods Of Internal Combustion Engines.The term "Governing" means the action of varying the fuel supply in accordance with the load demand so that the engine runs at practically constant speed. Below are the some important methods of governing of internal combustion engines.01) Hit & Miss Governing-This method is suitable for small gas engines. In this, the rotational motion of the cam actuates the rocker through the roller. The MechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-61004746314932335952009-02-14T16:43:00.003+05:302011-01-24T14:37:12.717+05:30How To Prevent Diesel Knock In Internal Combustion Engine?When sudden and violent knock are experienced in petrol engine, these knocks are termed as "Detonation". Just like petrol engines, a high-pressure wave set up in compression ignition engine (Diesel Engine) and this wave strikes the cylinder wall, cylinder head and piston resulting in knock. These knocks are known as "Diesel Knock".There is power and efficiency loss along with rough running of MechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-42608101609712405542009-02-13T14:27:00.002+05:302011-01-24T14:57:01.756+05:3010 Important Terms Used In Internal Combustion Engine.For the better knowledge of internal combustion engine every one must know about the following terms,01) Carburetion: -The process of breaking up the fuel into minute particles and mixing it with air is called "Carburetion". This process is mostly used in the internal combustion engine, which have low compression ratio and which use highly volatile liquid fuels such as petrol. The process of MechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-51121996989895793172009-02-12T19:25:00.002+05:302011-01-24T14:57:38.374+05:30How To Cool Exhaust Valve Of Internal Combustion Engine?Various strokes are performed in internal combustion engine to get work done up to our requirement. To complete suction and exhaust stroke, there are some valves used which are known as suction valve and exhaust valve. Suction valve allow the fresh charge of air-fuel mixture inside the cylinder, where it is compressed and burnt by other parts. Due to combustion process large heat is developed andMechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-51845107691080637212009-02-08T15:45:00.003+05:302011-01-24T14:58:05.529+05:30Factors Affecting Detonation In Internal Combustion Engine.In an internal combustion engine cylinder sometime sudden and violent knocks are experienced, this is known as "Detonation". This knock is set up by a high pressure wave giving loud pulsating noise as it strikes against cylinder walls, cylinder head and piston.A mild detonation will simply heat the engine but if the detonation is severe, it may even result in fracture of the piston or other MechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-73450282548347836182009-02-07T15:15:00.001+05:302011-01-24T14:58:30.340+05:30Various Parts Of Water Cooling System.Internal combustion Engine can be cooled by air-cooling or water-cooling method. Various Water Cooling Methods Of I.C.Engine is covered in earlier post, which you can refer to know in details. Impeller Thermosyphon system has required following components to perform the cooling action.01) Radiator:-The function of the radiator is to cool down the hot water from engine. It consists of a large MechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-20216761579921068442009-02-04T17:17:00.001+05:302009-02-04T17:19:18.571+05:30Various Water Cooling Methods Of I.C.EngineTo pass some of the heat generated due to combustion in the cylinder of internal combustion engine, air-cooling or water-cooling methods are used. The Details about air-cooling were covered in previous post (Air Cooling Of Internal Combustion Engine.). In this post you will find some more methods of water-cooling.In water-cooling method, the advantage of superior convective and conductive MechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-23524669594538102382009-02-03T15:37:00.001+05:302011-01-24T14:58:58.166+05:30Air Cooling Of Internal Combustion Engine.When the combustion of fuel takes place in cylinder of internal combustion engine, a very high temperature is developed. It is, therefore necessary to extract some of the heat from cylinder to atmosphere. It will avoid damage to the cylinder and piston. Heat also burns lubrication oil and form carbon. There is possibility of seizure of piston inside the cylinder, which will lead to more break MechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-30323788417721659702009-02-01T15:36:00.005+05:302011-01-24T14:59:38.004+05:30Common Defects In Water Cooling System And Its Rectifications.The heat is generated in engine due to combustion of air-fuel mixture that is why the Necessity Of Cooling In Internal Combustion Engine is required.This is done by air or water.Each cooling system has its own advantages and disadvantages,the most common defects occurring in water cooling system are,01) Loss Of Coolant:-Water leakage and water evaporation is the main cause of water loss from the MechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-59049599688019071802009-01-30T16:08:00.003+05:302009-02-09T16:22:34.455+05:30Necessity Of Cooling In Internal Combustion Engine.To get the work done from internal combustion engine,we have to burn air-fuel mixture inside the cylinder.When the combustion of air-fuel mixture takes place in the engine cylinder,a temperature as high as 2500 degree centigrade is reached.To withstand such a high temperature we have to use very high melting point material for construction of engine.Practically it is less possible because,"MechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-33847974879772654202009-01-29T14:24:00.004+05:302011-01-24T15:00:26.776+05:30Construction Of Spark Plug Used In Automotive Engine.To ignite the mixture of air-petrol inside the engine cylinder,a spark plug is used.A spark plug which is screwed into the cylinder head is usually designed to withstand a pressure about 35 kilogram per centimeter square and operate under 10000 to 30000 volts.Construction Of Spark Plug:-The core insulating assembly is housed in the steel shell assembly.The lower threaded portion of the shell MechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-39449437295721135462009-01-29T10:30:00.004+05:302011-01-24T15:00:56.453+05:30Automatic Ignition Timing Devices Used In Spark Ignition.All Petrol Engine used electric spark ignition.The compressed air-petrol mixture in a petrol engine must be fired at the correct instant so that the resulting rise in pressure acts on the piston when it is at top dead centre.A high voltage is required to jump the gap of a spark plug and give a spark of sufficient energy to ignite the mixture.As the speed of a spark ignition engine increases,it isMechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-73108325101600520822009-01-28T14:29:00.004+05:302011-01-24T15:01:41.842+05:30Different Ignition Systems Of Four Cylinder Engine.For the combustion of fresh charge of mixture it must be burn in engine cylinder.This is done with the help of spark plug.A spark is produced in spark plug by ignition system.The details about various ignition system will be covered in this post.01) Coil Ignition System:-This ignition system consists of a 6 or 12 volt battery,resistance,ignition switch,ammeter,high tension coil,contact breaker,MechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0tag:blogger.com,1999:blog-7815281944433032152.post-39755420633657783092009-01-24T14:43:00.004+05:302011-01-24T15:02:06.367+05:30Valve Timings Of High Performance Engine.It is most important to perform the engine as per our requirement.The performance of engine depends on mean effective pressure and rotational speed.Since mean effective pressure is limited by fuel and strength of materials,the only way to have higher performance is to have higher rotational speed.In high performance engines it is usual to open the valves earlier and close them later so that the MechanicalGuruhttp://www.blogger.com/profile/05549133244177668163noreply@blogger.com0