The connecting rod of an internal combustion engine is 225 mm long and has a

The connecting rod of an internal combustion engine

This preview shows page 25 - 37 out of 53 pages.

3.The connecting rod of an internal combustion engine is 225 mm long and has a mass 1.6 kg. The mass of the piston and gudgeon pin is 2.4 kg and the stroke is 150 mm. The cylinder bore is 112.5 mm. The centre of gravity of the connection rod is 150 mm from the small end. Its radius of gyration about the centre of gravity for oscillations in the plane of swing of the connecting rod is 87.5 mm. Determine the magnitude of torque on the crank when the piston is moving 25mm away from the top dead centre under an effective gas pressure of 1.8 MN/m2. The engine speed is 1200r.p.m.
Image of page 25
Image of page 26
Image of page 27
Turning Moment Diagram Turning moment diagram for a single cylinder, double acting steam engine. where F P = Piston effort, r = Radius of crank, n = Ratio of the connecting rod length and radius of crank, and θ = Angle turned by the crank from inner dead centre.
Image of page 28
Turning Moment Diagram for a Four Stroke Cycle Internal Combustion Engine
Image of page 29
Turning Moment Diagram for a Multi-cylinder steam Engine
Image of page 30
Fluctuation of Energy The variations of energy above and below the mean resisting torque line are called fluctuations of energy. The difference between the maximum and the minimum energies is known as maximum fluctuation of energy.
Image of page 31
Image of page 32
Image of page 33
Image of page 34
Image of page 35
Image of page 36
Image of page 37

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture