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2022

Fault generation and solution of automobile crankshaft

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As one of the components of automobile engine, crankshaft directly affects the performance and service life of automobile. As the crankshaft works under large load, the torque and the role of torque are constantly changing, so the crankshaft faces severe tests, and is prone to bending fatigue fracture, journal wear and other failures.

The crankshaft line is broken.

First, the crankshaft oil is easy to deteriorate after long-term use, or the engine is overloaded for a long time due to serious overload, overload operation and other reasons, resulting in Bush burning accidents. The engine burned out, the crankshaft was severely worn and broken.

The engine that has not passed the running in period is directly overloaded for loading and maintenance. The long-term overload operation of the engine makes the crankshaft load exceed the limit it can bear.

The other is to use this welding process for surfacing when repairing the crankshaft. This process destroys the dynamic balance of the crankshaft. If other balance checks are not carried out, the unbalance measurement will exceed the standard, causing severe vibration of the engine, and the crankshaft will break.

In the final analysis, due to poor road conditions, such as vehicle overloading again, the engine often runs at the critical torsional vibration speed, the shock absorber fails, and the torsional vibration fatigue of the crankshaft will be damaged.

Maintenance of crankshaft.

During the maintenance of the crankshaft, first of all, carefully check whether the crankshaft is cracked, bent, twisted and other defects, and whether the main bearing bush and connecting rod bush are worn. Make sure there is sufficient clearance between the main journal and the main bearing bush, and between the connecting rod journal and the connecting rod bush.

Second, when observing the crankshaft crack, pay attention to the angle between the crankshaft arm and the journal and the position of the oil hole in the journal. This is where the crankshaft is easy to break.

Third, after the maintenance is completed and the crankshaft is installed in the engine, ensure the flywheel operates in balance.

Fourth, after major accidents such as internal combustion engine Bush burning and oil cylinder collision, the crankshaft is likely to be damaged, and comprehensive maintenance must be carried out on the crankshaft.

The crankshaft sensor is broken

What is the cause of engine crankshaft wear?

The crankshaft sensor is broken

What is the cause of engine crankshaft wear?

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