Page 228 - CTS - Mechanic Diesel - TP

MECHANIC DIESEL - CITS

Tabulation (An example shown for calculation)

S. No. Cylinders Dynamometer Engine Speed (rpm) Brake Power, IPofthecutoff
Working Reading, (T)kg BP (KW) cylinder,(KW)
1 1-2-3-4 8 2069 3.93 6.56

2 2-3-4 3 2004 BP =2.21 IP =1.72
2,3,4 1
3 1-3-4 3.2 2057 BP 1,3,4 =2.42 IP =1.51
2
4 1-2-4 3.1 2018 BP =2.30 IP =1.63
1,2,4 3
5 1-2-3 3 2030 BP =2.23 IP = 1.7
1,2,3 4
10 Calculate Mechanica lEfficiency,ηmechanical=BPT/IPT =3.93/6.56
ηmechanical=59.9%

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CITS : Automotive - Mechanic Diesel - Exercise 13.4