A4-stroke, 4-cylinder, single acting spark ignition petrol engine develops \(20 \mathrm{~kW}\) brake power at \(3000 \mathrm{rpm}\). The following data are given :

Bore \(=65 \mathrm{~mm}\), 

Stroke \(=95 \mathrm{~mm}\), 

Clearance volume \(=65 \mathrm{~cm}^{3}\), 

Relative efficiency on BP basis \(=50 \%\), 

C.V. of fuel used \(=46 \mathrm{~mJ} / \mathrm{kg}\)

Mechanical efficiency \(=80 \%\)

Find specific fuel consumption on IP basis.