EP0304745A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Fast solenoid valve, particularly a fuel injection pilot valve for diesel engines
Assignee: Weber SRL
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Filing: 1988-08-12
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Granted: —
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Expires: 2008-08-12
Abstract
Abstract An electromagnetically-controlled fuel injection valve for diesel engines includes a body (2) having an upper electromagnetic metering valve (10) including an obturator (11) supported by an armature (13) and controlling communication between a control chamber (9) and a fuel discharge port (A). A series of radial notches (14) which may be empty or filled with an insulating material is formed in the armature (13).
Inventors
- 👤 Mario Ricco
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 11:15
CPC Classifications
F; F02; F02M; F02M63/00; F02M63/0012; F02M63/0014; F02M63/0015; F02M63/0017; F02M63/0021; F02M47/00; F02M47/02; F02M47/027; H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/16; H01F7/1638; F02B; F02B3/00; F02B3/06; F02M2200/00; F02M2200/30; F02M2200/304; H01F2007/1676
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
137 words
An electromagnetically-controlled fuel injection valve for diesel engines, including a body having a lower injection nozzle with which is operatively associated a needle controlling communication between the nozzle and an injection chamber supplied with fuel under pressure, and an upper electromagnetic metering valve including a body and an obturator supported by a ferromagnetic armature and adapted to control communication between a control chamber, to which the fuel is supplied under pressure to keep the needle in the closed position, and a discharge port the opening of which causes a drop in pressure in the control chamber and the consequent opening of the needle, characterised in that the armature (13) of the electromagnetic metering valve (10) has a plurality of apertures in the form of radial notches (14) which open onto the peripheral edge of the armature (13).
Claim 2
Dependent Claim
137 words
An electromagnetically-controlled fuel injection valve for diesel engines, including a body having a lower injection nozzle with which is operatively associated a needle controlling communication between the nozzle and an injection chamber supplied with fuel under pressure, and an upper electromagnetic metering valve including a body and an obturator supported by a ferromagnetic armature and adapted to control communication between a control chamber, to which the fuel is supplied under pressure to keep the needle in the closed position, and a discharge port the opening of which causes a drop in pressure in the control chamber and the consequent opening of the needle, characterised in that the armature (13) of the electromagnetic metering valve (10) has a plurality of apertures in the form of radial notches (14) which open onto the peripheral edge of the armature (13).
Claim 3
Dependent Claim
14 words
A valve according to Claim 1 characterised in that the apertures (14) are empty.
Claim 4
Dependent Claim
18 words
A valve according to Claim 1 characterised in that the apertures (14) are filled with an insulating material.
References Cited (Backward Citations)
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