Clean solution The following data is given for afour-stroke diesel engine:Cylinder boreLength of stroke = 300 mmSpeed = 600Indicated mean effective pressure = 0.6 MPaMechanical efficiency = 80%Maximum gas pressure = 4 MPaFuel consumption = 0.25 kg per BP per hHigher calorific value of fuelAssume that 5% of the total heat developed inthe cylinder is transmitted by the piston. The pistonis made of grey cast iron FG 200 (S = 200 N/mm46.6 Wm C) and the factor of safety is 5.The temperature difference between the centre andthe edge of the piston head is 220°C.(i) Calculate the thickness of piston head bystrength consideration.(ii) Calculate the thickness of piston head by250 mm=rpm|3D= 44 000 KJkgand kthermal consideration.(iii) Which criterion decides the thickness ofpiston head?

Answered: Image /qna-images/answer/8561fa17-c035-4a20-9d15-ec5647823e56.jpg

ressure = 4 MPa on = 0.25 kg per BP per h value of fuel = 44 000 kJ kg s of the total heat developed in smitted by the piston. The piston st iron FG 200 (S = 200 N/mm PC or of satetv is 5 (nd the facto

ressure = 4 MPa on = 0.25 kg per BP per h value of fuel = 44 000 kJ kg s of the total heat developed in smitted by the piston. The piston st iron FG 200 (S = 200 N/mm PC or of satetv is 5 (nd the facto

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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Concept explainers

Lubricants

Lubricant can be expressed as the substance that is applied among surfaces to control the wear and tear and improve performance. Lubricants play an essential part in the safety of machinery components like gears, shaft, linkage, cam, clutches, and many others. The quantities which affect the amount of lubricant are temperature, surrounding conditions, speed of the components, and many more.

Question

Clean solution

The following data is given for a
four-stroke diesel engine:
Cylinder bore
Length of stroke = 300 mm
Speed = 600
Indicated mean effective pressure = 0.6 MPa
Mechanical efficiency = 80%
Maximum gas pressure = 4 MPa
Fuel consumption = 0.25 kg per BP per h
Higher calorific value of fuel
Assume that 5% of the total heat developed in
the cylinder is transmitted by the piston. The piston
is made of grey cast iron FG 200 (S = 200 N/mm
46.6 Wm C) and the factor of safety is 5.
The temperature difference between the centre and
the edge of the piston head is 220°C.
(i) Calculate the thickness of piston head by
strength consideration.
(ii) Calculate the thickness of piston head by
250 mm
=
rpm
|3D
= 44 000 KJkg
and k
thermal consideration.
(iii) Which criterion decides the thickness of
piston head?

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