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US 12,280,656 B2Granted
Carbon canister with direct connect fuel tank isolation valve
AssigneeStant USA Corp.
InventorsJohn C. Long, George J. Mitri
Life of this patent
Estimating the term…
Abstract
A fuel tank vent valve includes a venting apparatus for regulating discharge of fuel vapor from a fuel tank and admission of outside air into a fuel tank. The vent valve is used to regulate pressure in a fuel tank.
Claims13
A tank venting system comprising
- a housing including a media storage body formed to define a storage cavity and a storage body closure coupled to the media storage body to close a top opening to the storage cavity, the storage body closure including a cover panel that couples to the media storage body and a valve housing that extends from the cover panel and formed to define a vapor port in fluid communication with a fuel tank and a vapor-transfer passageway arranged to interconnect the storage cavity and the vapor port to enable transfer of fuel vapor flowing from the fuel tank through the vapor port to the storage cavity of the media storage body and to enable transfer of hydrocarbon-laden vapor flowing from the storage cavity of the media storage body through the vapor port to the fuel tank,
- a carbon bed located in the storage cavity of the media storage body that is configured to absorb hydrocarbons in the fuel vapor flowing into and out of the media storage body through the vapor-transfer passageway, and
- a fuel tank isolation valve located in the vapor-transfer passageway of the storage body closure that is configured to regulate flow of fuel vapor in the vapor-transfer passageway between the vapor port and the storage cavity of the media storage body,
- wherein the fuel tank isolation valve includes a stationary perforated partition plate located in the vapor-transfer passageway defined by the valve housing to partition the vapor-transfer passageway to establish a tank-side chamber communicating with the vapor port on a first side of the stationary perforated partition plate and a storage-side chamber communicating with the storage cavity of the media storage body on an opposite second side of the stationary perforated partition plate, and
- wherein the valve housing includes an outer wall that extends axially from the cover panel away from the storage cavity relative to a central vertical axis of the fuel tank isolation valve, an inner wall extends axially from the outer wall relative to the axis into the storage cavity, and a vapor pipe that extends radially from the outer wall, the inner wall defines the vapor-transfer passageway such that the vapor-transfer passageway extends axially relative to the central vertical axis and opens into the storage cavity, and the vapor pipe forms the vapor port.
2 more elements
A tank venting system comprising
- a media storage body formed to define a storage cavity,
- a storage body closure coupled to the media storage body to close a top opening to the storage cavity, the storage body closure including a cover panel that couples to the media storage body and a valve housing that extends from the cover panel and formed to define a vapor port in fluid communication with a fuel tank and a vapor-transfer passageway arranged to interconnect the storage cavity and the vapor port to enable transfer of fuel vapor flowing from the fuel tank through the vapor port to the storage cavity of the media storage body and to enable transfer of hydrocarbon-laden vapor flowing from the storage cavity of the media storage body through the vapor port to the fuel tank, and
- a fuel tank isolation valve located in the vapor-transfer passageway of the storage body closure that is configured to regulate flow of fuel vapor in the vapor-transfer passageway between the vapor port and the storage cavity of the media storage body,
- wherein the valve housing includes an outer wall that extends axially from the cover panel away from the storage cavity relative to a central vertical axis of the fuel tank isolation valve, an inner wall extends axially from the outer wall relative to the axis into the storage cavity, and a vapor pipe that extends radially from the outer wall, the inner wall defines the vapor-transfer passageway, and the vapor pipe forms the vapor port, and
- wherein the fuel tank isolation valve includes a stationary perforated partition plate located in the vapor-transfer passageway defined by the inner wall of the valve housing to partition the vapor-transfer passageway to establish a tank-side chamber communicating with the vapor port on a first side of the stationary perforated partition plate and a storage-side chamber communicating with the storage cavity of the media storage body on an opposite second side of the stationary perforated partition plate.
2 more elements
A tank venting system comprising
- a media storage body formed to define a storage cavity,
- a storage body closure coupled to the media storage body to close a top opening to the storage cavity, the storage body closure including a cover panel that couples to the media storage body and a valve housing that extends from the cover panel and formed to define a vapor port in fluid communication with a fuel tank and a vapor-transfer passageway arranged to interconnect the storage cavity and the vapor port to enable transfer of fuel vapor flowing from the fuel tank through the vapor port to the storage cavity of the media storage body and to enable transfer of hydrocarbon-laden vapor flowing from the storage cavity of the media storage body through the vapor port to the fuel tank, and
- a fuel tank isolation valve located in the vapor-transfer passageway of the storage body closure that is configured to regulate flow of fuel vapor in the vapor-transfer passageway between the vapor port and the storage cavity of the media storage body,
- wherein the fuel tank isolation valve includes a stationary perforated partition plate located in the vapor-transfer passageway to partition the vapor-transfer passageway to establish a tank-side chamber communicating with the vapor port on a first side of the stationary perforated partition plate and a storage-side chamber communicating with the storage cavity of the media storage body on an opposite second side of the stationary perforated partition plate, and
- wherein the cover panel and the valve housing of the storage body closure are a monolithic component of plastic material.
2 more elements
Dependencies are inferred from the claim text.