Fuel oil injection engine

Details Fuel oil injection engine Fuel oil injection engine

1983-10-31

1986-10-28

Cross, E. Rollins

Internal-combustion engines

Charge forming device

Diverse fuel supply

123 27GE, 123304, F02B 1300

Patent

active

046192409

ABSTRACT:
The circulatory fuel oil injection supply system of a diesel engine is adapted so that the engine may be run selectively either in a single fuel mode on diesel oil alone or in a dual-fuel mode on both diesel oil and gas. The control system and fuel system of the engine are modified so that pressure conditions at a diesel oil injection metering device during the single-fuel mode are mimicked by a first flow restrictor during the dual-fuel mode. A pressure sensor measures the mimicked pressure and controls the amount of gas flow to the engine via an electronic programmable control. A shut-off first solenoid valve operative in the single-fuel mode circuit is by-passed in the dual-fuel mode while second and third solenoid valves are operative to open a by-pass line including a second flow-restrictor and to open a reference pressure supply line respectively. A governor control and a throttle control having a by-pass weep line remain operative in both the single-fuel mode and in the dual-fuel mode. In a further modification the first flow-restrictor and third solenoid valve and the second flow-restrictor and the second solenoid valve are replaced by respective pulsed solenoid valves providing variable flow-restrictors so as to allow a variable amount of pilot diesel fuel oil to be supplied in the dual-fuel mode via the electronic control.

REFERENCES:
patent: 2708916 (1955-05-01), Davids
patent: 2739577 (1956-03-01), Moulton
patent: 2780211 (1957-02-01), Davids
patent: 2929366 (1960-03-01), Kotlin et al.
patent: 2931429 (1960-04-01), Brown
patent: 3016886 (1962-01-01), Benz et al.
patent: 3406666 (1968-10-01), Steiger
patent: 4416244 (1983-11-01), McDonald
"Diesel Engineering Handbook" 11th Ed., pp. 288-289, 1963.

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