spark plug testing machine full seminar

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Transcript of spark plug testing machine full seminar

Spark Plugs

Major Project onSpark Plug Testing MachineByB.Shravan(11PQ1A0310)M.Prabhakar Reddy(11PQ1A0323)R.Sridhar(11PA1A0333)B.Ashok(11PQ1A0307)

Under esteemed guidance of Mr.V.Ganesh

ContentsIntroductionWorking planWorking designSpecificationsDefects in spark plugWorking operation Benefits of testingConclusion Introduction about Spark plug A spark plug is a device for delivering electric current from an ignition system to the combustion chamber of a spark-ignition engine to ignite the compressed fuel/air mixture by an electric spark.

Spark plugs usually require voltage of 12,00025,000 volts or more to 'fire' properly, although it can go up to 45,000 volts.Spark plug anatomy

What does the tester do!!

The Spark plug tester performs the following functions to check the proper working of the Spark plug. Checks if the Spark plug is accepting current from the wires that go to the spark plug.Proper firing of the Spark plug.Repairing/cleaning the spark plug.

Block Diagram of Work Plan

Study on Spark Plug and its Efficiency with respect to usage and lifeDesign Solution for performance improvement and efficiency lossesFabricating the machineDesigning the machineOperation of the machine

Working Design Specifications

Working Air Pressure : 5kg/cm2 16kg/cm2oFor Cleaning the Plug - 5kg/cm2 16kg/cm2oFor Electrical Testing of the Plug - 10 kg/cm2 16kg/cm2Power Supply : Input Voltage 220V AC with earthoOutput Voltage 12kv 19kv (HT voltage)Electronic Vibrator : 220V/12VAppearance SymptomsRemedyCarbon depositsDry sooty deposit on plug.Causes misfiring.Use a spark plug with longer core nose.DetonationInsulators may be cracked or chipped.Leads to piston damage.Make sure fuel antiknock values meet engine requirements.Mechanical DamageCaused by foreign object in combustion chamber.Causes a dead cylinder or damages piston.Remove the foreign object from the engine.

Defects in spark plug and their remedies Splash deposits Causes misfiring Replace the plugs with new ones or clean and reinstall the originals.Gap bridgingCombustion deposits lodge between electrodes and bridge the gap between them.Locate the faulty plug and remove and remove the deposits between the electrodes. Ash deposits Light brown deposits encrusted on the centre electrodes or both which may mask the spark causing misfiring

Install new valve guides to prevent seepage of oil into combustion chamber.Also try changing gasoline brands.High speed gazing Insulator has yellowish glazed appearance.Causes misfiring at high speeds.Install new plug.

Working operation The project which is the modified version of the conventional method. A 230 voltage electric current is supplied and it is stepped down to 12 voltages which only is compatible with the design of contact breaker point and it is primary winding.Parallelly a motor is connected to a CAM. When the motor rotates the connected CAM also rotates. The CAM and the contact breaker point are connected together by an adjusting screw.

The motor and the rotates and so the electric current is supplied to the contact breaker point and the contact breaker point opens and the electric current passes on through winding. Now the 12 voltage is stepped up to 12000 voltages using a High tension coiled (Secondary winding). Now we could test the spark plug which is our ultimate objective.TestingIn conventional tester there are three ranges.If the violet spark appears it is in the good condition. If it is appeared in the Yellow range, the spark plug is fair. If it appears in the no spark range the spark plug is poor and is to be discharged.

Cleaning process Spark plug repair or replacement conditionsSTARTING TROUBLELACK OF ACCELERATION

POOR FUEL ECONOMYENGINE MISFIRING

Benefits of Testing Spark Plugs & Replacing if underperforming

Low harmful emissions.Better fuel economy.Orderly making of optional combustions.Trouble free and dynamic start. Keeps engine healthy.

How often should it be replacedWhen a routine change persists then do it for every 10,000 kilometers.

ConclusionOperation of an IC Engine requires 3 pivotal elements. FUELAIRSPARK Spark plug plays the major role in the working of IC engine ,so it should be checked in order to the engine healthy4/15/2015 1:56 PM 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

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