Helix-controlled direct fuel injection pump

Details Helix-controlled direct fuel injection pump Helix-controlled direct fuel injection pump

1987-11-05

1989-04-25

Smith, Leonard E.

Pumps

Expansible chamber type

Pumping member position controlled port

F02M 4506

Patent

active

048243418

ABSTRACT:
The invention relates to a helix-controlled fuel injection pump intended for commercial vehicle internal combustion engines, with a constant-pressure relief valve and with a cam-operated pump piston, which controls a fuel bore hole in the pump cylinder, opening into the pump working space and at the same time serving for fuel supply, by an upper control edge for initiation of the injection and which controls this fuel bore hole by a lower helical control edge for ending of the injection and which furthermore controls a recess in the pump cylinder connecting the pump working space and the fuel bore hole by a peripheral groove for interruption of the injection.

REFERENCES:
patent: 2565681 (1951-08-01), Fleck et al.
patent: 2713310 (1955-07-01), Muraszew
patent: 2831433 (1958-04-01), Seifert et al.
patent: 3435811 (1969-04-01), Guertler
"Erprobung eines Einspritzsystems mit Gleichdruckentlastung fur Fahrzeugdiesel Motoren", Dr.-Ing. Ferenc Anisits und Ing. (grad) Gernot Amann, Arbon/Schweiz, MTZ Motortechnische Zeitschrift 38 (1977) 4, pp. 131-132.

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