Q78 A four Cylinder, four stroke petrol engine has a compression ratio of 6 to1. A test on this engine gave the following resultsg Net brake lead = 20kg, effective brake grm = 0.5 m, indicated mep =6alo N/m, engine speed 2400 rpm, fuel consumption = lo kg /h,calorific value of the fuel = 44000 kj (kg, Cylinder bore &6 mm, engine stroke - l00 mm. %3D Calculates@the imechanical efficiency the brake thermal efficiency the relative efficiency assuming the engine works on the Constant volume cycle and that x - 1,4forair

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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Q78 A four Cylinder, four stroke Petrol engine has a Compression ratio of 6 to1. A test on
this engine gave the following resultsg
Net brake load = 20kg, effective brake arm = 0.5 m, indicated mep =6alo N/m, engine
speed 2400 rpm,
%3D
fuel consumption = lo kg /h, calorific value of the fuel = 44000 kj (kg,
Cylinder bore 86 mm, engine stroke -l00 mm.
Calculates @the mechanicalefficiency the brake thermal efficiency the relative
efficiency assuming the engine works on the Constant volume cycle and that 8 - 1,4forair
The brake mean effective pressure.
Transcribed Image Text:Q78 A four Cylinder, four stroke Petrol engine has a Compression ratio of 6 to1. A test on this engine gave the following resultsg Net brake load = 20kg, effective brake arm = 0.5 m, indicated mep =6alo N/m, engine speed 2400 rpm, %3D fuel consumption = lo kg /h, calorific value of the fuel = 44000 kj (kg, Cylinder bore 86 mm, engine stroke -l00 mm. Calculates @the mechanicalefficiency the brake thermal efficiency the relative efficiency assuming the engine works on the Constant volume cycle and that 8 - 1,4forair The brake mean effective pressure.
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