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(c) A cast iron piston for a single acting four stroke engine has the following specifications: Cylinder bore 100mm Stroke=125mm Maximum gas pressure = 5 N/mm² Indicated mean effective pressure = 0.75 N/mm² Mechanical Efficiency = 80% Fuel Consumption = 0.15kg per brake power per hour Higher Calorific value of fuel = 42X103 kJ/kg Speed=2000 r.p.m. Stating any assumptions made, determine the thickness of the piston head Piston Data: Thermal conductivity of cast iron: 46.6W/m/°C Temperature difference between the piston centre and edge: 220°C. Permissible Stress for cast iron: 38N/mm² Take C=0.05.

(c) A cast iron piston for a single acting four stroke engine has the following specifications: Cylinder bore 100mm Stroke=125mm Maximum gas pressure = 5 N/mm² Indicated mean effective pressure = 0.75 N/mm² Mechanical Efficiency = 80% Fuel Consumption = 0.15kg per brake power per hour Higher Calorific value of fuel = 42X103 kJ/kg Speed=2000 r.p.m. Stating any assumptions made, determine the thickness of the piston head Piston Data: Thermal conductivity of cast iron: 46.6W/m/°C Temperature difference between the piston centre and edge: 220°C. Permissible Stress for cast iron: 38N/mm² Take C=0.05.

Elements Of Electromagnetics
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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(c) A cast iron piston for a single acting four stroke engine has the following specifications: Cylinder bore 100mm Stroke=125mm Maximum gas pressure = 5 N/mm² Indicated mean effective pressure = 0.75 N/mm² Mechanical Efficiency = 80% Fuel Consumption = 0.15kg per brake power per hour Higher Calorific value of fuel = 42X10³ kJ/kg Speed=2000 r.p.m. Stating any assumptions made, determine the thickness of the piston head Piston Data: Thermal conductivity of cast iron: 46.6W/m/°C Temperature difference between the piston centre and edge: 220°C. Permissible Stress for cast iron: 38N/mm² Take C=0.05.
Transcribed Image Text:(c) A cast iron piston for a single acting four stroke engine has the following specifications: Cylinder bore 100mm Stroke=125mm Maximum gas pressure = 5 N/mm² Indicated mean effective pressure = 0.75 N/mm² Mechanical Efficiency = 80% Fuel Consumption = 0.15kg per brake power per hour Higher Calorific value of fuel = 42X10³ kJ/kg Speed=2000 r.p.m. Stating any assumptions made, determine the thickness of the piston head Piston Data: Thermal conductivity of cast iron: 46.6W/m/°C Temperature difference between the piston centre and edge: 220°C. Permissible Stress for cast iron: 38N/mm² Take C=0.05.
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