53.Tie rod

 Entablature, A-frame and bedplate are held together by tie-bolt.

 They transmit the combustion gas load from top of the cylinder to the bed plate cross members.

 Tightened to pre-stress the structure maintaining them in compression.

 Gas load from cyl head is transferred to the cyl block by studs, cyl block transfers load to bed plate through Tie bolt.

TWIN BOLT IN MC ENGINE

On the MAN B&W MC-C engine the tie bolts do not pass through the bedplate transverse girder in the traditional way. Instead there are two pairs of tie bolts fitted either side of the single plate A frame and screwed into the bedplate transverse girder. This, it is claimed, reduces the distortion of the bedplate during engine operation

PINCH SCREW

- It is provided at the foot of cylinder jacket to stop the tie rod from vibrating during normal running of engine.

- It is fitted at the anti nodal point