Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1983-06-10
1985-05-07
Miller, Carl Stuart
Internal-combustion engines
Charge forming device
Fuel injection system
123474, 239585, 251141, F02M 3900, F16K 3104
Patent
active
045151296
ABSTRACT:
An edge discharge pulse fuel injector for discharging fuel to the cylinder of an internal combustion engine has a housing with a bore extending axially therein receiving an orifice plate fixed in one end thereof to partly enclose that one end, with the orifice plate having a valve seat surface and an opposed outboard surface with an orifice passage extending therethrough that is located radially outward from the axis of the housing. A solenoid means is fixed in the opposite end of the housing, the solenoid means including a pole piece means with a working surface positioned at right angles to the housing axis and in axial spaced apart opposed relationship to the valve seat surface to define a fuel chamber therewith within the housing which is adapted to receive fuel. An armature valve disc is operatively positioned in the fuel chamber for movement between the opposed working surface of the pole piece and the valve seat surface; and, a spring is operatively associated with this armature valve disc to normally bias it into seating engagement with the valve seat surface. One of the armature valve disc or valve seat surface presenting a surface inclined at an angle to the housing axis whereby the axial movement of the armature valve disc between the valve seat surface and the working surface of the pole piece means is greater adjacent to the orifice passage than at a location 180.degree. diametrically opposite thereof.
REFERENCES:
patent: 2881980 (1959-04-01), Beck et al.
patent: 3926405 (1975-12-01), Arnold
patent: 4356980 (1982-11-01), Krauss
patent: 4366944 (1983-01-01), Kah
patent: 4394973 (1983-07-01), Sauer
patent: 4418886 (1983-12-01), Holzer
patent: 4437644 (1984-03-01), Wilmers
patent: 4455982 (1984-06-01), Hafner
General Motors Corporation
Krein Arthur N.
Miller Carl Stuart
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