Reducing agent supply system for selective catalytic reduction-catalyzer of internal-combustion engine of motor vehicle, has hydraulic devices thermally coupled with common heat distribution device that is plate-shaped

摘要

The system has a reducing agent injecting valve (54) for measuring reducing agent in an exhaust manifold (14). The reducing agent is supplied from a reducing agent tank to the reducing agent injecting valve by hydraulic devices e.g. filter, reducing agent pump, pressure regulation valve and pressure sensor. Two of the hydraulic devices are thermally coupled with a common heat distribution device that is plate-shaped. The heat distribution device is formed of layers in a sandwich structure, where one of the layers is formed from aluminum.