How does a Diesel Hammer work?

16 October 2014
Ever wondered how a Diesel Hammer works? Take a look at our step by step diagram below...

1) Raising of the Piston (starting)

For starting the Diesel Hammer, the piston (ram) is raised by means of a mechanical trip ping device and is automatically released at a given height.



2) Injection of Diesel Fuel and Compression

As the piston falls through the cylinders it activates a lever on the back of the fuel pump, which injects a measured amount of diesel fuel onto the top of the impact block. Shortly after this, the exhaust ports are closed.

3) Impact and Atomization

Compressing all the air between the exhaust ports and the top of the impact block, the piston continues falling until it strikes the top of the impact block. The heat generated by the compression of air in the presence of atomized fuel, causes an explosion of the fuel, throwing the piston upward and forcing the impact block downward against the pile.

4) Exhaust

While moving upwards, the piston will pass and open the exhaust ports. Exhaust gases will escape and the pressure in the cylinder will equalize.

5) Scavenging

The piston continues its upward momentum which draws in fresh air for the next cycle, cools the cylinders and releases the pump lever. The pump lever returns to its starting position so that the pump can be charged with fuel. Gravity stops the upward motion of the position and it starts falling through the cylinders once again.

Why not have a look at our great range of Piling Rigs or read our articles on Piling.

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