Carburetor and solenoid assemblies and methods of assembling the same
AssigneeWalbro Engine Management, L.L.C.
InventorsMichael Burns, David Speirs
Life of this patent
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Abstract
An engine carburetor and a solenoid valve assembly therefore and methods of assembling the same. The carburetor has a body with a fuel and air mixing passage communicating with an air bleed passage. A cavity extends into the body for communication with the air bleed passage. A solenoid housing is received in the cavity and maintains a coil body for receipt of a valve body therein. The valve body moves between a retracted position to substantially open the air bleed passage and an extended position to substantially close the air bleed passage.
Claims28
A carburetor, comprising:
- a carburetor body;
- a fuel and air mixing passage in the body;
- an air bleed passage extending through at least a portion of the body and communicating with the fuel and air mixing passage;
- a cavity extending into the carburetor body and communicating with at least a portion of the air bleed passage;
- a solenoid housing having a through bore and an outer surface with a portion received by a friction fit within the cavity in the carburetor body;
- a coil body received at least partially in the solenoid housing and having a valve passage;
- and
- a valve body received at least in part in the through bore and the valve passage for reciprocation between a first position to at least partially obstruct the air bleed passage and a second position permitting a relatively free fluid flow past the valve body in the air bleed passage.
A solenoid assembly for a carburetor, comprising:
- a solenoid housing having a base and a pair of end walls extending outwardly from the base with one end wall having an opening and the other end wall having at least one slot extending laterally therein;
- a coil body having a longitudinal axis and a reduced diameter end sized for receipt in one of the openings in said one end wall, a bore, a wire coil disposed about the body and an inwardly extending tab for receipt in said at least one slot when the reduced diameter portion is received in the opening;
- and
- a valve body received in the bore for movement between first and second positions in response to application of electrical current to the wire coil.
A method of assembling a solenoid assembly for a carburetor, comprising the steps of:
- providing a solenoid housing having a base and a pair of end walls extending generally outwardly from the base with one end wall having an opening and the other end wall having at least one slot extending laterally therein;
- providing a coil body having a valve passage, a reduced diameter end sized for receipt in one of the openings in said one end wall, and at least one tab extending inwardly for receipt in said at least one slot;
- disposing the coil body generally between the end walls of the housing;
- inserting the reduced diameter end of the coil body in the opening of the end wall and inserting at least one tab in said at least one slot;
- inserting a magnet between said coil body and said other end wall of the housing;
- inserting a plate between the magnet and said coil body;
- inserting a spring in the valve passage of the coil body;
- and
- inserting a valve body in the valve passage of the coil body.
A method of assembling a solenoid assembly to a carburetor having a cavity extending into a body of the carburetor, comprising the steps of:
- a) providing a coil body with a valve passage;
- b) providing a valve body within the valve passage;
- c) providing a solenoid housing having a through bore and a valve passage sized for receipt of the valve body and having an outer surface sized for a friction fit within the cavity in the body;
- d) providing an end cap;
- e) press fitting the solenoid housing into the cavity in the body of the carburetor;
- f) inserting the coil body into the through bore of the solenoid housing;
- g) inserting the valve body into the valve passage of the coil body;
- and
- h) attaching the end cap to the solenoid housing.
Dependencies are inferred from the claim text.