Electromagnetic Injection Valve And Method For Assembling An Electromagnetic Injection Valve
First Claim
1. An electromagnetic injection valve comprising:
- an inlet tube;
a valve body having a longitudinal axis and a cavity in which a valve needle is axially moveable;
an upper magnetic ring press-fitted with the inlet tube or the valve body;
a lower magnetic ring press-fitted with the valve body; and
a housing part surrounding an electromagnetic actuator unit for moving the valve needle;
whereinthe lower magnetic ring is positioned on the valve body in such a way that an upper side of the lower magnetic ring is in close contact with an underside of the housing part;
the electromagnetic actuator unit abuts the upper magnetic ring and the lower magnetic ring on opposite axial sides; and
at least one of the housing part and the lower magnetic ring comprises a cut extending along the axis.
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Accused Products
Abstract
The present disclosure relates to internal combustion engines. Various embodiments may include an electromagnetic injection valve, particularly a solenoid type fluid injection valve for automotive applications. For example, an electromagnetic injection valve may include: an inlet tube; a valve body having a longitudinal axis and a cavity in which a valve needle moves; an upper magnetic ring press-fitted with the inlet tube or the valve body; a lower magnetic ring press-fitted with the valve body; and a housing part surrounding an electromagnetic actuator unit for moving the valve needle. The lower magnetic ring is positioned on the valve body in such a way that an upper side of the lower magnetic ring is in close contact with an underside of the housing part. The electromagnetic actuator unit abuts the upper magnetic ring and the lower magnetic ring on opposite axial sides. The housing part and/or the lower magnetic ring comprises a cut extending along the axis.
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Citations
13 Claims
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1. An electromagnetic injection valve comprising:
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an inlet tube; a valve body having a longitudinal axis and a cavity in which a valve needle is axially moveable; an upper magnetic ring press-fitted with the inlet tube or the valve body; a lower magnetic ring press-fitted with the valve body; and a housing part surrounding an electromagnetic actuator unit for moving the valve needle; wherein the lower magnetic ring is positioned on the valve body in such a way that an upper side of the lower magnetic ring is in close contact with an underside of the housing part; the electromagnetic actuator unit abuts the upper magnetic ring and the lower magnetic ring on opposite axial sides; and at least one of the housing part and the lower magnetic ring comprises a cut extending along the axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 12)
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8. A method for assembling an electromagnetic injection valve comprising an inlet tube, a valve body comprising a cavity in which a valve needle is axially moveable, and an electromagnetic actuator unit for moving the valve needle, the method comprising:
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press-fitting an upper magnetic ring onto the inlet tube or the valve body; fitting a housing part surrounding the actuator unit; overmolding the housing part; and press-fitting a lower magnetic ring separately with the valve body in such a way that an upper side of the lower magnetic ring is in close contact with an underside of the housing part; wherein the upper magnetic ring and the lower magnetic ring are disposed such that they abut opposite axial sides of the electromagnetic actuator unit to fix an axial position of the electromagnetic actuator unit. - View Dependent Claims (9, 10, 11, 13)
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Specification