The first thing we are going to determine is that crankshaft is a term that comes from the Latin word “ciconia”.
According to DigoPaul, the crankshaft, also called shadoof, is a shaft that has elbows and, through a mechanism of connecting rod, able to convert a uniform alternative rectilinear motion and vice versa circular motion.
It has its origin in an ancient mechanism that was used to draw water from shallow wells. Specifically, it was a system that was supported by a kind of pole that had a counterweight with which the necessary force was obtained to proceed to raise the water and thus be able to enjoy it.
We can understand what a crankshaft is by analyzing the different terms that are part of the aforementioned definition. An axis is a bar that works as a support for a rotating body when there is a movement. The mechanism or crankset, for its part, refers to the gear that transforms a translational movement into a circular movement, or a circular movement into a translational movement.
Taking these details into account, we can affirm that the crankshaft is an elbow bar that, interacting with other components of a machine, allows the transformation of a rectilinear movement into a circular (or vice versa).
In general, the crankshafts are made with very resistant alloys, they are already subjected to a great effort. Many times they have conduits and perforations through which a lubricating substance circulates.
The internal combustion engines that use the cars have a crankshaft. With the engine running, the fuel located in the combustion chamber causes an explosion that moves the piston in a linear fashion. Said movement is transmitted to a connecting rod that is connected to the piston and the crankshaft. When the movement reaches the crankshaft, it transforms it into a rotary or circular movement. The counterweights and flywheels of the crankshaft allow to minimize the irregularities generated in the movement of the shaft.
On more than one occasion it has happened that you have encountered a problem in your car due to the aforementioned crankshaft. A serious problem since this element is a key part of the vehicle’s engine. Specifically, among the most frequent breakdowns you may experience are the following:
-There has been a scratch of what are the crankpins, which is in relation to the filtering of the oil and even with lubrication. The causes of this situation can be several such as that the lubricant is not doing its job properly, that it has traveled at full load with very few revolutions, that accelerations have been made while the engine is still too cold …
-The crankshaft has broken due to fatigue. This other breakdown, which requires taking the car to the workshop without any doubt, can occur because the crankshaft is not well balanced, because there have been torsional vibrations or even because a cylinder has been ignited in the wrong way.