Fuel injection device for internal combustion engines, in partic

Details Fuel injection device for internal combustion engines, in partic Fuel injection device for internal combustion engines, in partic

1989-10-20

1990-12-11

Miller, Carl Stuart

Internal-combustion engines

Charge forming device

With fuel pump

123447, 239 95, F02M 4702

Patent

active

049762443

ABSTRACT:
A fuel injection device for internal combustion engines including a pump nozzle, a pump piston, preferably driven via a drive cam, and a pressure chamber disconnected from a pump chamber by an intermediate piston that preferably assumes its end postions in its working stroke, with a pressure line leading from the pressure chamber to an injection nozzle. The control of fuel quantity into the pressure chamber is effected via a control valve, preferably embodied as a magnetic valve, in a feed line that is also controlled by a control slide driven in synchronism with the pump piston. During one intake stroke segment of the pump piston, the feed line is connected to the pressure chamber; during another intake stroke segment, the feed pump is connected to a reservoir, so as to control the fill volume of the reservoir as a function of time. During the first compression stroke segment fuel is positively displaced from the pump chamber to the reservoir and once it is refilled with a variable fill quantity, the supply onset can be initiated by suitably driving the intermediate piston.

REFERENCES:
patent: 4235374 (1980-11-01), Walter et al.
patent: 4250857 (1981-02-01), Taplin
patent: 4281792 (1981-08-01), Sisson et al.
patent: 4396151 (1983-08-01), Kato
patent: 4409939 (1983-10-01), Eheim
patent: 4427152 (1984-01-01), Sisson
patent: 4463725 (1984-08-01), Laufer
patent: 4467963 (1984-08-01), Sisson
patent: 4471740 (1984-09-01), Jourde
patent: 4475514 (1984-10-01), List
patent: 4485787 (1984-12-01), Kato et al.
patent: 4593664 (1986-06-01), Omori

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