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US 12,209,561 B2Granted
Pump for evaporative emissions system
AssigneeStoneridge Electronics AB
InventorRobert James Steinman
Life of this patent
Estimating the term…
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.
Claims27
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 side having a first passage formed in the intermediate plate that fluidly connects the bore with the inlet port, the second side having a second passage formed in the intermediate plate that fluidly connects the bore with the outlet port, and wherein the intermediate plate is reversible with respect to the first and second plates such that either of the first side and the second side can mate with either of the first plate and the second plate, the intermediate plate is symmetrical about an axis between positions 180° apart, so that a first surface and a second surface provided respectively by the first side and the second side, as well as the corresponding first passage and second passage, are the same if rotated 180° about the axis;
- and
- a rotor arranged in the bore, the rotor supporting slidable vanes configured to pump fluid between the inlet and outlet ports.
1 more element
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 side having a first passage formed in the intermediate plate about a periphery of the bore and that fluidly connects the bore with the inlet port, the second side having a second passage formed in the intermediate plate about a periphery of the bore and that fluidly connects the bore with the outlet port, and wherein the intermediate plate is reversible with respect to the first and second plates such that either of the first side and the second side can mate with either of the first plate and the second plate, the intermediate plate is symmetrical about an axis between positions 180° apart, so that a first surface and a second surface provided respectively by the first side and the second side, as well as their corresponding first passage and second passage, are the same if rotated 180° about the axis;
- 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.
5 more elements
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, the intermediate plate includes a bore and inlet and outlet ports, the first side having a first passage formed in the intermediate plate about a periphery of the bore wherein the first passage fluidly connects the bore with the inlet port, and the second side having a second passage formed in the intermediate plate about the periphery of the bore and that fluidly connects the bore with the outlet port;
- disposing a rotor with slidable vanes into the 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, such that either of the first side and the second side can mate with either of the first plate and the second plate, the intermediate plate is symmetrical about an axis between positions 180° apart, so that a first surface and a second surface provided respectively by the first side and the second side, as well as their corresponding first passage and second passage, are the same if rotated 180° about the axis.
2 more elements
Dependencies are inferred from the claim text.