Device for fastening and sealing a metering valve in an internal

Details Device for fastening and sealing a metering valve in an internal Device for fastening and sealing a metering valve in an internal

1998-11-12

2000-03-21

Moulis, Thomas N.

Internal-combustion engines

Charge forming device

Fuel injection system

239600, F02M 3704

Patent

active

06039031&

ABSTRACT:
The injector has a hollow body supporting a nozzle, and a metering valve ing a valve body housed in a cylindrical seat of the hollow body; the valve body has an annular cavity for distributing high-pressure fuel to a control chamber of the valve; the seat communicates with an axial cavity of the hollow body, in which the control rod slides and which is at atmospheric pressure; the valve body is fitted to the hollow body by means of a ring nut; the valve body has a portion having an outer truncated-cone-shaped surface; the seat has a portion having an inner truncated-cone-shaped surface; and the two truncated-cone-shaped surfaces have the same taper, and engage mutually in fluidtight manner by virtue of the ring nut.

REFERENCES:
patent: 4860710 (1989-08-01), Hafner et al.
patent: 5909725 (1999-06-01), Balsdon et al.

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