Diesel engine fuel injection pump capable of injection timing ad

Details Diesel engine fuel injection pump capable of injection timing ad Diesel engine fuel injection pump capable of injection timing ad

1986-06-27

1987-12-15

Croyle, Carlton R.

Pumps

Expansible chamber type

Plural pumping members in single pump chamber

417494, 417499, F04B 704, F04B 3910, F02M 5920

Patent

active

047129859

ABSTRACT:
A plunger assembly within a barrel is transversely split into two segments, with a timing fluid chamber therebetween for controllably varying the distance between the plunger segments in response to pressure applied thereto by a timing fluid introduced under variable pressure through a timing fluid inlet port. As the total length of the plunger assmebly is thus varied controllably, so is its prestroke which is the distance traversed by the plunger assembly on its compression stroke from one extreme position thereof to an intermediate position where the plunger assembly completely covers the fuel inlet port. Not only is the injection timing thus controlled by the injection pump itself, but also a high injection pressure is realized at low engine speed or under light load.

REFERENCES:
patent: 2424943 (1947-07-01), Nicolls
patent: 3492947 (1970-02-01), Paine
patent: 3782864 (1974-01-01), Perr
patent: 3847510 (1974-11-01), Fenne

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