Fuel additive metering system

Details Fuel additive metering system Fuel additive metering system

1986-11-25

1988-03-01

Cross, E. Rollins

Internal-combustion engines

Miscellaneous

Fuels, lubricants and additives

123198A, F02B 7512

Patent

active

047278277

ABSTRACT:
In a diesel engine fuel injection system, a fuel injection pump draws fuel from a reservoir, delivers a portion of the fuel to the engine, and directs excess fuel through a return line back to the reservoir. A supply pump delivers fuel from a tank to the reservoir to maintain a constant volume of fuel in the reservoir. A fuel metering unit measures the rate of fuel delivery by the supply pump. An additive pump feeds an additive through the return line to the reservoir where the additive mixes with the fuel. The fuel metering unit controls the additive pump to proportion the rate at which additive is fed to the reservoir to the rate at which fuel is delivered by the supply pump, and the amount of additive delivered to the engine is thereby proportioned to the amount of fuel consumed by the engine.

REFERENCES:
patent: 4161168 (1979-07-01), Hicks et al.
patent: 4253436 (1981-03-01), Dudrey
patent: 4342287 (1982-08-01), Concepcion
patent: 4557221 (1985-12-01), Kamel et al.
patent: 4568248 (1986-02-01), Harders
patent: 4596277 (1986-06-01), Djordjevic
patent: 4621593 (1986-04-01), Rao et al.
SAE 840078 Wiedemann et al 1984, p. 15, FIG. 26 and Additive Metering Equipment Text.
SAE 850016 Simon et al 1985, pp. 12-13, FIG. 16 and Additive Dispensing Text.

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