| 摘要 |
In order to prevent that a liquid reducing agent in a selective catalytic reduction system freezes, there are provided additional resistor heating elements on the pressure sensor diaphragm of the pressure sensor that is present in the reducing agent feed system. The same technique is applied in the production of the heating sensors as in the production of the sensor resistance network. The use of the sensor diaphragm surface for the electrical heating of the liquid reducing agent (e.g., aqueous urea solution) eliminates the need for additional installation space, sealed areas, and connectors for the electrical supply and triggering mechanism. |
