Fuel injection pump for internal combustion engines

Details Fuel injection pump for internal combustion engines Fuel injection pump for internal combustion engines

1985-06-03

1987-01-13

Miller, Carl Stuart

Internal-combustion engines

Charge forming device

Fuel injection system

123503, 123506, 417289, F02M 3900

Patent

active

046356053

ABSTRACT:
A fuel injection pump of the distributor type is proposed, in which the injection quantity is controlled by controlling the first outlet cross section D of a first relief line and the stroke-offset outlet C of a second relief line for the pump work chamber of the fuel injection pump by means of a control edge that is variable in accordance with load and/or rpm. To attain nonsupply of fuel within the intended supply stroke of the pump piston during idling and at low partial load, communication between the first and second relief lines is provided. The communication exists only for the duration of a predetermined stroke portion (h.sub.e) and is additionally controlled in accordance with load and/or rpm by controlling the following outlet of the second relief line, so that from a predetermined upper load range to full-load operation, the entire fuel quantity pumped by the pump piston over the effective supply stroke does in fact become injected.

REFERENCES:
patent: 3942914 (1976-03-01), Hofer et al.
patent: 4284047 (1981-08-01), Stumpp
patent: 4407253 (1983-10-01), Bauer

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