| 发明名称 |
APPARATUS FOR DOSING A UREA SOLUTION TO A SELECTIVE CATALYTIC REDUCTION (SCR) CATALYST |
| 摘要 |
Apparatus for dosing a urea solution to a selective catalytic reduction (SCR) catalyst in the exhaust of an internal combustion engine, the apparatus comprising an injector for injection of the solution in the exhaust and a tube (1) for transporting the solution to the injector, wherein a heating element (2) is in contact with the tube, which heating element is a Positive Temperature Coefficient (PTC) heating element, comprising at least two parallel wires (4.1, 4.2) embedded in a body (3) of a composition, which composition comprises a polymer and an electrically conductive filler. |
| 申请公布号 |
US2017122165(A1) |
申请公布日期 |
2017.05.04 |
| 申请号 |
US201515127188 |
申请日期 |
2015.03.18 |
| 申请人 |
DSM IP Assets B.V. |
发明人 |
DUIJSENS Armand Alphons Marie Agnes |
| 分类号 |
F01N3/20;H05B3/58 |
主分类号 |
F01N3/20 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An apparatus for dosing a urea solution to a selective catalytic reduction (SCR) catalyst in the exhaust of an internal combustion engine, the apparatus comprising an injector for injection of the solution in the exhaust and a tube for transporting the solution to the injector, wherein a heating element is in contact with the tube, which heating element is a Positive Temperature Coefficient (PTC) heating element, comprising at least two parallel wires embedded in a body of a composition, which composition comprises a polymer and an electrically conductive filler. |
| 地址 |
Heerlen NL |
