Pump for evaporative emissions system
AssigneeStoneridge Control Devices, Inc.
InventorRobert James Steinman
Life of this patent
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Abstract
A rotary vane pump includes a housing that includes first and second plates respectively secured to first and second opposing sides of an intermediate plate. The intermediate plate includes a bore and inlet and outlet ports. The first and second sides respectively have first and second passages that are respectively in fluid communication with the inlet and outlet ports. The first and second passages are in fluid communication with the bore. The intermediate plate is reversible with respect to the first and second plates. A rotor is arranged in the bore. The rotor supports slidable vanes that are configured to pump fluid between the inlet and outlet ports.
Claims20
A rotary vane pump comprising:
- a housing including first and second plates respectively secured to first and second opposing sides of an intermediate plate;
- wherein the intermediate plate includes a bore and inlet and outlet ports, the first and second sides respectively having first and second passages that are respectively in fluid communication with the inlet and outlet ports, and the first and second passages are in fluid communication with the bore, wherein the intermediate plate is reversible with respect to the first and second plates;
- and
- a rotor arranged in the bore, the rotor supporting slidable vanes configured to pump fluid between the inlet and outlet ports.
An evaporative emissions system comprising:
- an evaporative component;
- a pump fluidly connected to the evaporative component, the pump including:
- a housing including first and second plates respectively secured to first and second opposing sides of an intermediate plate;
- wherein the intermediate plate includes a bore and inlet and outlet ports, the first and second sides respectively having first and second passages that are respectively in fluid communication with the inlet and outlet ports, and the first and second passages are in fluid communication with the bore, wherein the intermediate plate is reversible with respect to the first and second plates;
- and
- a rotor arranged in the bore, the rotor supporting vanes configured to pump fluid between the inlet and outlet ports;
- and
- a controller in communication with the pump, the controller configured to maintain a pressure on the system during a leak test procedure.
A method of assembling a rotary vane pump, comprising the steps of:
- arranging a first plate into abutting engagement with either a first side or a second side of an intermediate plate that is reversible with respect to the first plate;
- disposing a rotor with slidable vanes into a bore in the intermediate plate;
- arranging a second plate into abutting engagement with the other of the first and second sides;
- and
- securing the first and second plates about the intermediate plate and rotor.
Dependencies are inferred from the claim text.