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WHY AUXILIARY ENGINE NOT LOADED INSTANTANEOUSLY
IT IS ADVISABLE TO LOAD TO AUXILIARY ENGINE SLOWLY. THIS IS BECAUSE SUDDEN LOADING LEAD TO OVERHEATING. THIS IS BECAUSE, THE CONTACT BETWEEN THE LINER AND SKIRT IS A LINE […]
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WHY CON-ROD OF 4-STROKE ENGINE IS I-SECTION
THE CON-ROD OF 4-STROKE ENGINE IS SUBJECTED TO AN INERTIA WHIP LOADING DUE TO MASS OF THE PISTON SWINGING ABOUT THE PISTON AND HIGH SPEED OF ROTATION. IN 2 STOKE […]
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WHY PISTON COOLING OIL GOES FROM BOTTOM TO TOP AND NOT TOP TO BOTTOM
IN THE MAIN ENGINE WITH PISTON COOLING OIL, WE SEE THAT COOLING OIL GOES FROM BOTTOM OF THE PISTON ROD THEN MOVES UP TO PISTON. […]
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NOX REDUCTION METHOD- “THE MILLER PRINCIPLE”
IT IS A METHOD OF REDUCING THE NOX EMISSION FROM THE ENGINE. FOR NOX REDUCTION BY MILLER PRINCIPLE THE SCAVENGE AIR PORTS ARE LOWER AND THEIR OPENINGS ARE MADE NARROW. […]
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WHY FUELS HAVE 2 CALORIFIC VALUES
CALORIFIC VALUE OF FUEL IS THE QUANTITY OF HEAT PRODUCED BY IT’S COMBUSTION AT CONSTANT PRESSURE AND STANDARD CONDITION I.E AT 0°C AND UNDER A PRESSURE OF 1013 mbar. HIGHER […]
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WHY CETANE NUMBER NOT USED FOR RESIDUAL FUEL
Cetane Number is indicator of quality of lighter distillate fuels. It is an inverse function of a fuel’s ignition delay i.e. higher the cetane no. quicker the fuel will burn. […]
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WHY PISTON CROWN OF A/E AND M/E IS NOT FLAT
PISTON CROWNS ARE NORMALLY CONCAVE IN SHAPE. THEY ARE NEVER MADE FLAT. THE REASON BEHIND THIS IS THAT, DUE TO AS THE GAS PRESSURE INCREASES AND DECREASES, THE FLAT PISTON […]
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ALPHA LUBRICATION
INTRODUCTION It is a well known fact that the actual need for cylinder oil quantity varies with the operational conditions such as load and fuel oil quality. Consequently, in order […]
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ADVANTAGES AND DISADVANTAGES OF PULSE AND CONSTANT TURBOCHARGING
A) PULSE TURBOCHARGING :- ADVANTAGES :- HIGH AVAILABLE ENERGY AT TURBINE. GOOD PERFORMANCE AT LOW SPEED AND LOAD. GOOD TURBOCHARGER ACCELERATION. DISADVANTAGES :- POOR TURBINE EFFICIENCY WITH ONE OR TWO […]
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TYPE OF TURBOCHARGING SYSTEM
THERE ARE TWO TYPE OF TURBOCHARGING SYSTEM :- A) CONSTANT PRESSURE TURBOCHARGING :- IN THIS SYSTEM, THE EXHAUST BRANCH OR PIPE FROM EACH INDIVIDUAL CYLINDER IS LED INTO A COMMON […]
