imum suction pressure 0.02 MPa below cilmosphere iness of spring= 10 N/mm ng index nissible torsional shear stress for spring wire 300 N/mmr Julus of rigiditr = 84 × 10 Nmm gap between consecutive coils, when the is subjected to maximum force, can be take1 of the maximum compression.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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Design a valve spring for thhe
exhaust valve of a four-stroke engine using the
following data:
Diameter of ahe head 75 mm
Lifi of valve = 25 mm
Maximum suction pressure
0.02 MPa below
atmosphere
Stiffness of spring
Spring index
Permissible torsional shear stress for spring wire
10 N/mm
300 N/mmr
Modulus of rigidity
84 x 10 N/mnm
Total gap bereen consecutive coils, when the
spring is subjected to maximum force, cam be taken
(As 15o of the maximm compression.
Transcribed Image Text:Design a valve spring for thhe exhaust valve of a four-stroke engine using the following data: Diameter of ahe head 75 mm Lifi of valve = 25 mm Maximum suction pressure 0.02 MPa below atmosphere Stiffness of spring Spring index Permissible torsional shear stress for spring wire 10 N/mm 300 N/mmr Modulus of rigidity 84 x 10 N/mnm Total gap bereen consecutive coils, when the spring is subjected to maximum force, cam be taken (As 15o of the maximm compression.
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