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When operating slow-speed diesel engines, we carry out a periodic job of tie rods tightening check. Why is this job required?

02 Nov, 10:52

Nov. 2, 2019, 10:52 a.m.
3Eng's gravatar image



Answer:

Tightening of tie rods should be checked to prevent them and engine frame from damage by vertically acting forces. Normally, tie rods are affected by periodic stretching forces during engine operation. If one or more tie rod nuts are loosened, subject tie rods get affected by additional shock loads.

Occasionally the tie rods on a large slow-speed diesel engine may fail in service. The mode of failure is usually a complete fracture of the tie rod due to excessive fatigue stress.

Fatigue failure may be confirmed by the features of the surface of the fracture: part of the fracture surface would be uneven but smooth (burnished) with the remainder crystalline with part cup and cone shape.

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02 Nov, 11:03

Nov. 2, 2019, 11:03 a.m.
cheng's gravatar image


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