TRACTOR DIESEL THREE-FUEL SYSTEM Russian patent published in 2010 - IPC F02M43/00 

FIELD: engines and pumps.

SUBSTANCE: proposed system comprises mineral fuel tank, vegetable fuel tank, mineral fuel intake line consisting of fuel lines, fuel fine and coarse filters, fuel pump, vegetable fuel intake line consisting of fuel lines, electrically drive pump, high-pressure fuel pump communicated with said mineral and vegetable fuel intake lines, excess fuel drain line of high-pressure fuel pump and excess fuel drain line of nozzles. Gravitation filter is arranged in vegetable fuel intake line between the tank and electrically driven pump. Electrically drive hydraulic control valve is arranged in mineral fuel intake line between the tank and fuel coarse filter, said valve having two inlet and one outlet channels. One of said inlet channels communicates the mineral fuel intake line, while another one communicates with vegetable fuel intake line. Said outlet channels communicates with fuel coarse filter inlet. Mixer is arranged at outlet of mineral and vegetable fuel intake lines, while electric switch is arranged between electrically drive hydraulic control valve and fuel pump.

EFFECT: diesel can run on three types of fuel.

1 dwg