System and method for feeding fuel to a fine-particle-mixed fuel

Details System and method for feeding fuel to a fine-particle-mixed fuel System and method for feeding fuel to a fine-particle-mixed fuel

1992-06-12

1993-10-12

Kamen, Noah P.

Internal-combustion engines

Solid fuel

F02D 1904

Patent

active

052515761

ABSTRACT:
In a system and method for feeding fuel, consisting of fine particles of solid fuel such as pulverized coal or the like and fuel oil, a predetermined amount of the fuel oil is fed into an oil reservoir within an injection valve through a control valve, and this fuel oil is injected through a nozzle hole of the injection valve with the aid of oil pressurized by a high-pressure pump. Only the above-mentioned fuel oil is injected, i.e. the pressurized oil is not injected. Also the aforementioned fuel oil never enters the high-pressure pump so as to prevent the plunger of the pump from seizing. The oil fed to the oil reservoir is returned to an oil tank via a circulation valve, and so, deterioration of the oil can be precluded. In addition, since the control valve is regulated by a signal indicating a position of a control rack which regulates the amount of oil delivered by the high-pressure pump, fuel oil in an amount corresponding to the amount of oil delivered by the high-pressure pump is sent to the aforementioned oil reservoir. Therefore, only the above-mentioned fuel oil will be reliably injected.

REFERENCES:
patent: 4662315 (1987-05-01), Sommer
patent: 4699103 (1987-10-01), Tsukahara et al.
Patent Abstracts of Japan, vol. 10, No. 163 (M-487) (2219), Jun. 11, 1986.

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