Another Interesting Use of Magnetic Devices
I am aware of the use of a magnetic field in diesel fuel supply lines for the purpose of killing diesel bug. It's called the L1000 Fuel Treatment and it originates from Smart Auto Systems in Wellington, NZ. I can't find any reference to them on the web - I can only find a reference to a series of tests using them in Panama - so maybe the company no longer exists.
It was sufficiently well regarded by Telstra Broadcast infrastructure designers to be incorporated into the fuel systems of many of the larger Emergency Power Plants on the high power broadcast sites which they constructed for the two national broadcast networks, back in the '90's.
They are still in service and we never have a problem with diesel bug, although we do have occasional (rare really) issues with water contamination in the underground fuel tanks which is likely to promote its growth. However many of the sites are configured to cycle the fuel in the underground storage tanks through the "day tank" filters (and L1000 units) on a monthly basis and this should trap any contaminants, although if there were a severe infestation of diesel bug, it would clog the filters - I'm not aware of this happening at all.
I'm not saying it works, but it's interesting that it was accepted as a legitimate accessory for diesel gen-sets by a major corporate entity. If anyone is really interested I do have a pdf of the spec sheet which comes with the units (which look just like a fuel filter except the housing appears to be cast aluminium and is quite substantial) but it's a bit big to post here.
The opening paragraph reads ...
"The device, when fitted on the suction side of a diesel engine's fuel system will constantly treat the symptoms, providing systematic control of microbial contaminants. The De-Bug unit is not a filter; it is a static treatment unit. Fuel is passed through the De-Bug before it reaches the lift pump, through a carefully calculated magnetic field for a controlled period of time. As the microbes pass through the differing magnetic fluxes, tests show they disrupt and die leaving no residue. Average size trucks have shown to burn clean within 48 hours.
Sludge and water will settle in the bowl and can be drained out at regular intervals using the drain screw fitted to the bowl base.
This unit is suitable for engines ranging from 90 to 600HP. It is also possible to install two L1000 units in parallel to each other, to increase the flow rate - capacity to 2000 litres per hour.
Application:
For Diesel Fuel, Marine Diesels, Light Diesels, Light Oils, and Gas Oil
...
Size:
110mm dia / 190mm high
...
Materials:
LM6 Aluminium / Marine Grade / Anti Corrosive
Spacers - Acatyle High Tensile Plastic
Magnets - Ceramic Isotropic
..."
Again, I pass no judgement on whether it works or not, I just find it interesting.