What Is Tie Rods? Diagram And Functions?

           Tie rod is a long rod with bolts at both the end which  hold the bedplate , frames and entablature firmly together in compression, and to transmit the firing forces back to the bedplate, long tie bolts are fitted through these three components and then tightened hydraulically.

MUST READ: How To Use Hydraulic Jack In Tie Rod

To prevent excessive bending moments in the transverse girders, the tie bolts are positioned as close to the center of the crankshaft as possible. Because the tie bolts are so close to the crankshaft, some engines employ jack bolts to hold the crankshaft main bearing cap in position instead of conventional studs and nuts.

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  1. Purpose/functions :
    They provide for fatigue strength.
    They also provide for proper running gear alignment which prevents fretting.
    They help to reduce the bending stress being transmitted to the transverse girder.
    Tie rods transmit the gas forces which act on the cylinder head.
    The firing pressure force of the piston is directly transmitted to the main
    bearing and consequently to the engine frame through the tie rod

    reference: deven aranha

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