Q7:-A cam having a lift of 1 cm operates the suction valve of 4-stroke cycle petrol engine. The least radius of the cam is 2 cm and the nose circle radius is 0.25 cm. The crank angle of the engine, when suction valve opens is 4° after T.D.C. and it is 50° after B.D.C. when the suction valve closes. The valve is integral with the camshaft and operates as flat-faced follower. Estimate (a) the maximum velocity of the valve when the engine speed is 2000 rpm, (b) the maximum acceleration and retardation of the valve and (c) the maximum and minimum force to be exerted by the spring to overcome inertia of the valve parts which weigh 2 N. Q7:-A cam having a lift of 1 cm operates the suction valve of 4-strokecycle petrol engine. The least radius of the cam is 2 cm and thenose circle radius is 0.25 cm. The crank angle of the engine, whensuction valve opens is 4° after T.D.C. and it is 50° after B.D.C.when the suction valve closes. The valve is integral with thecamshaft and operates as flat-faced follower. Estimate (a) themaximum velocity of the valve when the engine speed is 2000rpm, (b) the maximum acceleration and retardation of the valveand (c) the maximum and minimum force to be exerted by thespring to overcome inertia of the valve parts which weigh 2 N.

Cam is a machine element which provides oscillating or reciprocating motion to another machine…

Answered: A cam having a lift of 1 cm operates…

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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Q7:-A cam having a lift of 1 cm operates the suction valve of 4-stroke cycle petrol engine. The least radius of the cam is 2 cm and the nose circle radius is 0.25 cm. The crank angle of the engine, when suction valve opens is 4° after T.D.C. and it is 50° after B.D.C. when the suction valve closes. The valve is integral with the camshaft and operates as flat-faced follower. Estimate (a) the maximum velocity of the valve when the engine speed is 2000 rpm, (b) the maximum acceleration and retardation of the valve and (c) the maximum and minimum force to be exerted by the spring to overcome inertia of the valve parts which weigh 2 N.

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