Fuel injection apparatus for internal combustion engines, in par

Details Fuel injection apparatus for internal combustion engines, in par Fuel injection apparatus for internal combustion engines, in par

1981-06-24

1983-08-16

Lazarus, Ira S.

Internal-combustion engines

Charge forming device

Fuel injection system

123449, 123459, F02M 3900

Patent

active

043985190

ABSTRACT:
A fuel injection apparatus for internal combustion engines is proposed in which the onset and end of injection are determined by a hydraulically actuated control slide. The injection pumps of the apparatus, which are preferably combined with an injection nozzle to make a pump
ozzle unit have a central control pressure pump supplied with fuel by a supply pump. The control pressure pump creates a control pressure (p.sub.S) which is a multiple increase in comparison to the supply pressure (p.sub.V) of the supply pump and actuates the control slide. Each control slide is placed under control pressure (p.sub.S) to initiate the onset of injection via a control line which is separated from the filling lines of the injection pump and closes an overflow channel which leads away from the pump work chamber. At the end of injection the control slide again relieves this overflow channel to a supply line during its return stroke.

REFERENCES:
patent: 3011489 (1961-12-01), Bessiere
patent: 3358662 (1967-12-01), Kulke
patent: 3404668 (1968-10-01), Eheim et al.
patent: 3620647 (1971-11-01), Hofer et al.
patent: 3667438 (1972-06-01), Moulin et al.
patent: 3699939 (1972-10-01), Eckert et al.
patent: 3921604 (1975-11-01), Links
patent: 4249497 (1981-02-01), Eheim et al.

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