Electronic fuel injection device

Details Electronic fuel injection device Electronic fuel injection device

1987-11-09

1989-04-18

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

With fuel pump

123512, 417322, 417521, F02M 5104

Patent

active

048217263

ABSTRACT:
An electronic fuel injection device for pumping fuel to an internal-combustion engine by using the expansion-contraction characteristics of a piezoelectric device. The electronic fuel injection device has a pump member integrally formed and having a number of pistons corresponding to the number of cylinders of the associated internal-combustion engine, and a single actuator for driving the pump member. Accordingly, the same pressure is generated in all of the pump chambers when the pump member is driven by the actuator for each fuel injection cycle. Each pump chamber is connected to a fuel feed passage connected to a fuel tank and to a fuel injection passage connected to a fuel injection nozzle, and is filled with the fuel. The pump chambers are pressurized uniformly to distribute the fuel uniformly to the cylinders regardless of the passage characteristics of the fuel injection passages.

REFERENCES:
patent: 3418980 (1968-12-01), Benson
patent: 4022174 (1977-05-01), Brinkman
patent: 4230273 (1980-10-01), Claxton et al.
patent: 4235375 (1980-11-01), Melotti
patent: 4499878 (1985-02-01), Igashira et al.
patent: 4649886 (1987-03-01), Igashira et al.

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