F - Mech Eng,Light,Heat,Weapons – 02 – D
Patent
F - Mech Eng,Light,Heat,Weapons
02
D
123/80, 341/38.1
F02D 41/30 (2006.01) F02D 19/08 (2006.01)
Patent
CA 1186773
CONTROL SYSTEM FOR A DUAL FUEL INTERNAL COMBUSTION ENGINE Abstract of the Disclosure A control system is provided for regulating the fuel feed to a dual fuel internal combustion engine. The engine includes a source of first fuel, a pump therefor, and a source of second fuel under a predetermined pressure. A first valve is mounted within a first feed line connecting the engine to the pump outlet. A second valve is mounted within a second feed line connecting the engine to the pump outlet. A third valve is mounted within a third feed line connecting the engine to the second fuel source. A pressure- sensitive metering valve is disposed within the third feed line downstream of the third valve. A means is provided which transmits the flow pressure from the second valve to the metering valve and thus, determines the setting of the latter. A control means, adjustable between two modes, is operatively connected to the first, second, and third valves. When the control means is in a first mode, the first valve is open and both the second and third valves are closed whereby only the first fuel is fed to the engine. When the control means is in a second mode, the first valve is closed and both the second and third valves are open whereby both the first and second fuels are simultaneously fed to the engine. The ratio of the second fuel to the first fuel being fed to the engine, when the control means is in the second mode, is determined by the setting of the meter ing valve when said control means is in said second mode.
418186
Cummins Engine Company Inc.
Smart & Biggar
LandOfFree
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