Fuel Injection Valve With A Weld Ring

A combustion engine comprising:

• a combustion chamber for receiving fuel;
• a valve body with a cavity hydraulically connecting a fluid inlet portion and a fluid outlet portion connected to the combustion chamber;
• a valve needle movable in the cavity to seal and unseal the fluid outlet portion;
• an actuator assembly to actuate the valve needle;
• the actuator assembly includes an electro-magnetic coil, a pole piece positioned inside the cavity, and an armature element;
• the armature element moves within the cavity to move the valve needle in a predetermined direction for unsealing the fluid outlet portion;
• and
• a fixing ring abutting the pole piece, the fixing ring fixed to the valve body by means of joining to a circumferential surface of the cavity.

A vehicle comprising:

• a plurality of wheels or propellers and
• a combustion chamber for driving the plurality of wheels or propellers by burning fuel;
• a valve body with a cavity hydraulically connecting a fluid inlet portion and a fluid outlet portion connected to the combustion chamber;
• a valve needle movable in the cavity to seal and unseal the fluid outlet portion;
• an actuator assembly to actuate the valve needle;
• the actuator assembly includes an electro-magnetic coil, a pole piece positioned inside the cavity, and an armature element;
• the armature element moves within the cavity to move the valve needle in a predetermined direction for unsealing the fluid outlet portion;
• and
• a fixing ring abutting the pole piece, the fixing ring fixed to the valve body by means of joining to a circumferential surface of the cavity.

A method for producing a fuel injection valve for a combustion engine, the method comprising:

• shifting a pole piece into a cavity of a valve body having a longitudinal axis;
• adjusting an axial position of the pole piece with respect to the valve body;
• inserting a fixing ring into the cavity so that the fixing ring abuts the pole piece;
• and
• fixing the fixing ring to a circumferential surface of the cavity of the valve body.

A method of operating a fuel injection valve for a combustion engine, the method comprising:

• opening the valve;
• and
• closing the valve;
• wherein opening the valve comprises:
• providing a magnetic field with an electro-magnetic coil;
• gathering and directing the magnetic field to an armature element with a pole piece;
• and
• pushing a retainer element with the armature element such that a valve needle allows a fluid to flow through a fluid outlet portion of a valve body;
• and
• closing the valve comprises:
• pushing the valve needle with a spring element such that the valve needle prevents the fluid from flowing through the fluid outlet portion;
• wherein a fixing ring abuts a pole piece and secures the pole piece to a circumferential surface of a cavity of the valve body, the cavity hydraulically connecting a fluid inlet portion to the fluid outlet portion.