Unit injector cooled by timing control fluid

Details Unit injector cooled by timing control fluid Unit injector cooled by timing control fluid

1981-12-31

1983-10-18

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Unitary injection nozzle and valve with continuously...

239125, 2391323, F02M 4500, F02M 5304, F02M 5500

Patent

active

044101384

ABSTRACT:
A unit injector (200, 300, 400, 500, 600) of the cam actuated, open nozzle type is disclosed including an extremely compact injector body (202, 302, 402, 502) having a minimum number of internal flow passages and a two piece injector plunger (222, 308, 310, 412, 506, 510, 606, 612) arranged to provide pressure/time metering (all embodiments), scavenging fuel flow (all embodiments), hydraulic timing (all embodiments), fuel cut off (embodiments of FIGS. 1, 3 and 4), wear compensation in advance timing mode (all embodiments) and sharp cut off of fuel injection without high "crush" loads and wear compensation in retard and advance modes (embodiment of FIG. 3). All embodiments of this invention are characterized by an injector body (202, 302, 402, 502) having an exterior shape designed to form a fuel supply flow path and an isolated fuel drain flow path between the exterior surface of the injector body (202, 302, 402, 502) and the interior surface of the recess in which the injector (200, 300, 400, 500, 600) is designed to be received. This arrangement allows a very simple pattern of passages (mostly radial passages) to be formed in the injector body.

REFERENCES:
patent: 2313264 (1943-03-01), Reggio
patent: 2863438 (1958-12-01), Challis
patent: 2984230 (1981-05-01), Cummins
patent: 2997994 (1961-08-01), Falberg
patent: 3083912 (1963-04-01), Shallenberg
patent: 3351288 (1967-11-01), Perr
patent: 3544008 (1970-12-01), Reiners et al.
patent: 3557765 (1971-01-01), Nystrom
patent: 3847510 (1974-11-01), Fenne
patent: 3859973 (1975-01-01), Dreisin
patent: 3951117 (1976-04-01), Perr
patent: 4249499 (1981-02-01), Perr

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