PLEASE SOLVE THE LAST TWO PARTS ONLY THANKS A petrol engine produces 250 kW while using 1.014 kg of fuel per minute. The fuelhas a lower heating value of 45000 kJ/kg, and the engine has bore of 100 mm and thestroke-to-bore ratio of 1.2. The clearance volume of the cylinder is 1.178×10° mm³.The friction power is found to be 10% of the power that engine produces. Sketch(your own) the simple neat and clean block diagram of the engine, clearly indicatingthe control volume and control surface, with all the given data displayed on it. For airtake the value of y= 1.4.Determine the following:(a) The brake thermal efficiency (7.th ).(b) The indicated thermal efficiency (Nind th ).(c) The mechanical efficiency (Nmwch ).(d) The brake engine efficiency (7, ).(e) The indicated engine efficiency (7ind).

As you mentioned i gave answer of d). and e). For solution refer below images.

Answered: (d) The brake engine efficiency (7,).…

Engineering

Mechanical Engineering

(d) The brake engine efficiency (7,). (e) The indicated engine efficiency (7ind).

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A petrol engine produces 250 kW while using 1.014 kg of fuel per minute. The fuel has a lower heating value of 45000 kJ/kg, and the engine has bore of 100 mm and the stroke-to-bore ratio of 1.2. The clearance volume of the cylinder is 1.178×10' mm³. The friction power is found to be 10% of the power that engine produces. Sketch (your own) the simple neat and clean block diagram of the engine, clearly indicating the control volume and control surface, with all the given data displayed on it. For air take the value of y= 1.4. Determine the following: (a) The brake thermal efficiency (Np.th). (b) The indicated thermal efficiency (7ind.th). (c) The mechanical efficiency (7mech )- (d) The brake engine efficiency (7,). (e) The indicated engine efficiency (7ind). (Hint: Engine efficiency is a function of how the ideal work or power is calculated. Frequently, the air-standard cycle is used for calculating the theoretical work.) NOTE (Q 4): Use standard symbols and write units is each and every…
A petrol engine produces 250 kW while using 1.014 kg of fuel per minute. The fuel has a lower heating value of 45000 kJ/kg, and the engine has bore of 100 mm and the stroke-to-bore ratio of 1.2. The clearance volume of the cylinder is 1.178×10° mm². The friction power is found to be 10% of the power that engine produces. Sketch (your own) the simple neat and clean block diagram of the engine, clearly indicating the control volume and control surface, with all the given data displayed on it. For air take the value of y= 1.4. Determine the following: (a) The brake thermal efficiency (N th). (b) The indicated thermal efficiency (Nind,th )- (c) The mechanical efficiency (7mech ). (d) The brake engine efficiency (7,). (e) The indicated engine efficiency (7,nd). (Hint: Engine efficiency is a function of how the ideal work or power is calculated. Frequently, the air-standard cycle is used for calculating the theoretical work.) NOTE (Q 4): Use standard symbols and write units is each and every…
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