Fuel injection pump

Details Fuel injection pump Fuel injection pump

1978-12-21

1980-07-08

Myhre, Charles J.

Internal-combustion engines

Spark ignition timing control

Electronic control

123496, 123505, 123511, F02M 3900, F02M 4108

Patent

active

042112036

ABSTRACT:
A distributor type fuel injection pump which includes a relief passage having one end thereof opening in the pump working chamber and the other end communicating with a zone under a lower pressure. Said relief passage is so arranged as to be permanently kept closed by a valve means which is actuated by a valve actuating means for actuating said valve means in response to a fuel supply pressure varying as a function of the engine rotational speed, except in a predetermined low engine speed range, to obtain a decreased injection rate during idling so as to increase the injection period. Thus, the rate of combustion of the engine is reduced to minimize the combustion noise.

REFERENCES:
patent: 2794397 (1957-06-01), Borman
patent: 3231003 (1966-01-01), Richcreek
patent: 3339534 (1967-09-01), Eheim
patent: 3614270 (1971-10-01), Franke
patent: 3631743 (1972-01-01), Eckert
patent: 3699939 (1972-10-01), Eckert
patent: 3827832 (1974-08-01), Faupel
patent: 4073275 (1978-02-01), Hofer

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