Marine engines are fabricated with different components, which are held and tied together to complete the engine structure with the help of tie rods. As the name suggests, tie rods are long metal rods that are generally found at the periphery of the engine.
Functioning of Tie Rods
A tie rod is a long strong rod with bolts or tie bolts at both ends. This rod holds the three major engine components i.e. Cylinder block or entablature, “A” frame, and crankcase in compression and transmits the firing load to the bedplate.
The tie rods are fitted through the above-mentioned components and are hydraulically tightened so that the whole engine can be held in compression.
Tie rods are placed as close to the centreline of the crankshaft of the engine to minimise the bending movement in the transverse girder.
Tie rods are typically made from high-strength steel or other durable materials, as they must be able to withstand the immense pressures and forces that are generated by the engine during operation. They are designed to be extremely strong and rigid, as any flexing or bending could lead to serious mechanical issues or even engine failure.
Effect of loose or broken tie rod
If the tie rod bolts are loosened or broken, then the marine engine will show the following abnormalities:
What are the Causes of Tie-Rod Breaking?