Fuel ventilation system valve
AssigneeVolvo Car Corporation
InventorChristoffer Nemeth
Life of this patent
Estimating the term…
Abstract
A fuel system vent valve comprises a housing with a first opening, and a float inside the housing. The float is movable between a first position in which the valve is open and a second position in which the float covers the first opening such that the valve is closed. The valve further comprises a liquid trap arranged above the housing such that it covers the first opening. The liquid trap comprises a housing in which is arranged a perimeter wall surrounding the first opening, the perimeter wall being arranged at a distance from the liquid trap housing thereby creating a first volume inside the wall and a second volume outside the wall. The first volume is larger than the second volume and the two volumes are connected via at least one gap between a top of the wall and a top of the liquid trap housing.
Claims17
A fuel system vent valve comprising:
- a housing with a first opening in an upper part of the housing and multiple additional openings at least on a side of the housing;
- a float inside the housing, wherein the float is movable between a first position in which the valve is open and a second position in which the float covers the first opening such that the valve is closed;
- and
- a liquid trap arranged above the housing such that the liquid trap covers the first opening, the liquid trap comprising a liquid trap housing in which is arranged a first perimeter wall surrounding the first opening, the first perimeter wall being arranged at a distance from the liquid trap housing thereby creating a first volume inside the first perimeter wall and a second volume outside the first perimeter wall, wherein the first volume is larger than the second volume and the two volumes are connected via at least one gap between a top of the first perimeter wall and a top of the liquid trap housing, the liquid trap housing further comprising an outlet opening in direct connection with the second volume, and wherein the liquid trap further comprises a second perimeter wall arranged inside the first volume, the second perimeter wall having at least one opening adjacent the housing in which the float is arranged.
A fuel system vent valve comprising:
- a housing with a first opening in an upper part of the housing;
- a float inside the housing, wherein the float is movable between a first position in which the valve is open and a second position in which the float covers the first opening such that the valve is closed;
- and
- a liquid trap arranged above the housing such that the liquid trap covers the first opening, the liquid trap comprising a liquid trap housing in which is arranged a first perimeter wall surrounding the first opening, the first perimeter wall being spaced apart from at least a portion of the liquid trap housing thereby defining a first volume inside the first perimeter wall and a second volume outside the first perimeter wall, wherein the first volume is larger than the second volume and the two volumes are connected via at least one gap between a top of the first perimeter wall and a top of the liquid trap housing, the liquid trap housing further comprising an outlet opening in direct connection with the second volume, and wherein the liquid trap further comprises a second perimeter wall arranged inside the first volume, the second perimeter wall having at least one opening adjacent the housing in which the float is arranged.
Dependencies are inferred from the claim text.