Make copra by removing the shell, breaking up the white flesh and drying. Alternatively the flesh may be sun-dried in the shell.
Take the dried white flesh of coconut, which is called copra and feed it into a primary crusher. The now smaller pieces are then fed into a secondary crusher where the oil is expelled through holes in the crusher. A filter takes out solids and the expressed oil is put into a holding tank where sediments settle. After two weeks in the settling tank it can then be used in cars and other vehicles including ships, or to fuel power generators.
you need to crush about 9 coconuts to recover 1 litre of oil
coconut oil starts to solidify in temperatures less than 24.4 degrees Celsius. Viscosity can be boosted by blending in diesel in colder areas.
carefully filtered coconut oil with excess moisture removed works perfectly in many diesel engines.
How it works Removing coconut meat from shell Loading copra into crusher Primary crusher: turns it into smaller pieces Loading into secondary crusher Press filter to remove solids Coconut oil coming out of crusher Settling tanks Rental truck fleet running on coconuts Taste test. "Yep. Tastes like coconut"
Car hire company initially used 60:40 coconut oil to diesel but found diesel had too much moisture content. They now use 80:20 mix.
Port Vila's elec co. UNELCO started experimenting with coconut/diesel fuel mix in June 2005 (using 5% coconut oil) in their 4 MW generator. They were at 15% by September 2007 and are hoping to run on B100 (100%) soon.
Experiments have found you can use 10-90% blends in most diesel engines, with most tolerance with a 50-50 blend.
Currently on Pacific Islands a handful of businesses run all their vehicles on B100 - forklifts, crane trucks, Mazda and Toyota Hilux utes, JAC trucks, boats, ships - as well as in heavy machinery and generators.
UNELCO is now buying copra at a fixed price (outside of the world commodity market) to encourage coconut farming on Pacific Islands.