| 摘要 |
A filter assembly comprising a housing, a filter, a heater, hose fittings, a heat bridge, and insulators. The housing defines interior and exterior regions communicating through apertures. The filter separate the housing into a region upstream of the filter comprising an aperture, and a region downstream of the filter comprising an aperture. The heater extends into the interior region. The hose fittings are each coincident with an aperture and are formed of a material having a high thermal conductivity. The heat bridge is formed of a material having a high thermal conductivity and thermally connects the heater to the hose fittings. The insulators each are formed of a material having a low thermal conductivity, and each at least partially cover a hose fitting. |
| 主权项 |
1. A filter assembly comprising
a housing defining an interior region and exterior region, the interior region and the exterior region being in communication through a first aperture and a second aperture; a filter adapted for filtering an aqueous urea solution, the filter within the housing, the filter separating the housing into
an upstream region upstream of the filter, the upstream region communicating with the second aperture, anda downstream region downstream of the filter, the downstream region communicating with the first aperture; a heater extending into the interior region of the housing; a first hose fitting communicating with the first aperture, the first hose fitting formed of a material having a thermal conductivity of at least 16 W/(m*K); a second hose fitting communicating with the second aperture, the second hose fitting formed of material having a thermal conductivity of at least 16 W/(m*K); a heat bridge
formed of a conductive material having a thermal conductivity of at least 16 W/(m*K),thermally connecting the heater to the first hose fitting, andthermally connecting the heater to the second hose fitting; and a first insulator
formed of a material having a thermal conductivity of at most 0.25 W/(m*K),the first insulator at least partially covering the first hose fitting; and a second insulator
formed of a material having a thermal conductivity of at most 0.25 W/(m*K),the second insulator at least partially covering the second hose fitting. |
