Q1. (a) Discuss the factors that have to be considered in the design of an engine cylinder. (b) The pressure, volume and temperature at the beginning of compression of a four stroke petrol engine are 105kN/m²,0.0005m³ and 25°C respectively. The maximum temperature of the cycle is 1400°C. The volume ratio of the engine is 8:1. i) Calculate the mean effective pressure in the cylinder. ii) The brake power produced by the engine is 60kW at a speed of 5200 r.p.m. If the Mechanical efficiency of the engine is 82%, determine the size of the cylinder bore and length. iii) Estimate the thickness of the cylinder head to support the gas load present in the engine cylinder. Assume the material has a tensile stress of 42N/mm². (c) Discuss the nature of the stresses present in the cylinder walls.
Q1. (a) Discuss the factors that have to be considered in the design of an engine cylinder. (b) The pressure, volume and temperature at the beginning of compression of a four stroke petrol engine are 105kN/m²,0.0005m³ and 25°C respectively. The maximum temperature of the cycle is 1400°C. The volume ratio of the engine is 8:1. i) Calculate the mean effective pressure in the cylinder. ii) The brake power produced by the engine is 60kW at a speed of 5200 r.p.m. If the Mechanical efficiency of the engine is 82%, determine the size of the cylinder bore and length. iii) Estimate the thickness of the cylinder head to support the gas load present in the engine cylinder. Assume the material has a tensile stress of 42N/mm². (c) Discuss the nature of the stresses present in the cylinder walls.
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
Related questions
Question
Transcribed Image Text:Q1. (a)
Discuss the factors that have to be considered in the design of an
engine cylinder.
(b)
The pressure, volume and temperature at the beginning of
compression of a four stroke petrol engine are 105kN/m²,0.0005m³ and
25°C respectively. The maximum temperature of the cycle is 1400°C.
The volume ratio of the engine is 8:1.
i)
Calculate the mean effective pressure in the cylinder.
ii)
The brake power produced by the engine is 60kW at a speed of
5200 r.p.m. If the Mechanical efficiency of the engine is 82%,
determine the size of the cylinder bore and length.
iii)
Estimate the thickness of the cylinder head to support the gas
load present in the engine cylinder. Assume the material has
a tensile stress of 42N/mm².
(c)
Discuss the nature of the stresses present in the cylinder walls.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 3 steps with 1 images
Recommended textbooks for you
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
Control Systems Engineering
Mechanical Engineering
ISBN:
9781118170519
Author:
Norman S. Nise
Publisher:
WILEY
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:
9781337093347
Author:
Barry J. Goodno, James M. Gere
Publisher:
Cengage Learning
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:
9781118807330
Author:
James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:
WILEY