Fuel injection pump for an internal combustion engine

Details Fuel injection pump for an internal combustion engine Fuel injection pump for an internal combustion engine

1983-08-30

1985-07-23

Moy, Magdalen Y. C.

Internal-combustion engines

Combustion chamber means having fuel injection only

Using multiple injectors or injections

123501, 123450, 417462, F02B 300

Patent

active

045303240

ABSTRACT:
A first plunger pump serves to inject fuel into the combustion chamber of an internal combustion engine during first periodical compression strokes as the crankshaft of the engine rotates. A second plunger pump serves to inject fuel into the combustion chamber during second periodical compression strokes as the crankshaft rotates. The maximum fuel injection quantity during each second compression stroke of the second plunger pump is smaller than that during each first compression stroke of the first plunger pump. A sensor detects load on the engine. A mechanism serves to advance the timing of the first compression strokes relative to that of the second compression strokes with respect to the rotational angle of the crankshaft as the detected engine load increases. The characteristic curve of the rate of the sum of the fuel injections effected by the first and second plunger pumps with respect to the rotational angle of the crankshaft can vary in accordance with the engine load.

REFERENCES:
patent: 4173959 (1979-11-01), Sosnowski et al.
patent: 4224903 (1980-09-01), Mowbray
patent: 4265200 (1981-05-01), Wessel et al.
patent: 4299542 (1981-11-01), Potter et al.
patent: 4367714 (1983-01-01), Di Domenico et al.
U.S. Ser. No. 495,661 filed May 18, 1983, inventor: Yoshihisa Kawamura et al.

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