Q1. A four stroke internal combustion engine has the following specifications: Brake power 7.5 kW; Speed 1000 r.p.m.; Indicated mean effective pressure 0.35 N/mm2;Maximum gas pressure 3.5 N/mm; Mechanical efficiency = 80 %. Determine: 1. The dimesions of the cylinder, if the length of stroke is 1.4 times the bore of the cylinder; 2. Wall thickness of the cylinder, if the hoop stress is 35 MPa 3. Thickness of the cylinder head and the size of studs when the permissible stresses for the cylinder head and stud materials are 45 MPa and 65 MPa respectively
Q1. A four stroke internal combustion engine has the following specifications: Brake power 7.5 kW; Speed 1000 r.p.m.; Indicated mean effective pressure 0.35 N/mm2;Maximum gas pressure 3.5 N/mm; Mechanical efficiency = 80 %. Determine: 1. The dimesions of the cylinder, if the length of stroke is 1.4 times the bore of the cylinder; 2. Wall thickness of the cylinder, if the hoop stress is 35 MPa 3. Thickness of the cylinder head and the size of studs when the permissible stresses for the cylinder head and stud materials are 45 MPa and 65 MPa respectively
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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Transcribed Image Text:Q1. A four stroke internal combustion engine has the following
specifications:
Brake power = 7.5 kW; Speed = 1000 r.p.m.; Indicated mean
effective pressure 0.35 N/mm2;Maximum gas pressure = 3.5
N/mm; Mechanical efficiency = 80 %.
Determine:
1. The dimesions of the cylinder, if the length of stroke is 1.4
times the bore of the cylinder;
2. Wall thickness of the cylinder, if the hoop stress is 35 MPa
3. Thickness of the cylinder head and the size of studs when the
permissible stresses for the cylinder head and stud materials are
45 MPa and 65 MPa respectively
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