![Crank Mechanism Construction](https://innovationdiscoveries.space/wp-content/uploads/2020/07/Crank-Mechanism-Construction-1140x641.jpg)
The purpose of a crank mechanism – transforming back-and-forth motion of the pistons to the crankshaft rotation.
Components of the crank mechanism can be a divide into two groups: stationary and moving.
Moving components of crank mechanism: pistons, piston rings, piston pins, connecting rods, flywheel, crankshaft.
Also, read – PISTON AND PISTON RINGS
![](https://innovationdiscoveries.space/wp-content/uploads/2020/07/crank-mechanism-1140x641.jpg)
Stationary components of crank mechanism: engine cylinder block, engine head block, cylinders, sump.
Also, read – WHAT IS AN ENGINE BLOCK?
![](https://innovationdiscoveries.space/wp-content/uploads/2020/07/engine-cylinder-block-1140x641.jpg)
Stationary engine parts
Piston – is a component of an internal combustion engine. Purpose of the piston is to transfer force from expanding gas in the cylinder to the crankshaft through a connecting rod.
Also, read – IC ENGINE: COMPONENTS AND THEIR FUNCTIONS, TYPES, AND TERMINOLOGY
![](https://innovationdiscoveries.space/wp-content/uploads/2020/07/Piston-1140x641.jpg)
A piston ring is a split ring that fits into a groove on the outer diameter of the piston in an internal combustion engine.
![](https://innovationdiscoveries.space/wp-content/uploads/2020/07/Piston-1-1140x641.jpg)
Connecting rod – is a member, which connects a piston to a crankshaft in a reciprocating engine.
![](https://innovationdiscoveries.space/wp-content/uploads/2020/07/Connecting-rod-1140x641.jpg)
Crankshaft – is a mechanical part that performs a conversion between reciprocating motion piston and connecting rod to rotational motion. When crankshaft defecting is not possible to avoid costly repair, so you can see crankshaft repair cost here.
![](https://innovationdiscoveries.space/wp-content/uploads/2020/07/Crankshaft-1140x641.jpg)
The flywheel is – a mechanical device designed to efficiently store crankshaft rotational energy.
![](https://innovationdiscoveries.space/wp-content/uploads/2020/07/Flywheel-1140x641.jpg)
The engine cylinder block is – the structure, which contains the cylinders, and other parts, of an internal combustion engine.
![](https://innovationdiscoveries.space/wp-content/uploads/2020/07/cylinder-block-1140x641.jpg)
Engine cylinder head – sits above the cylinders on top of the cylinder block in an engine.
![](https://innovationdiscoveries.space/wp-content/uploads/2020/07/cylinder-head--1140x641.jpg)
The cylinder is – the space in which the piston travels is the central working part of an engine.
![](https://innovationdiscoveries.space/wp-content/uploads/2020/07/Cylinder-1140x641.jpg)
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