Device for introducing e.g. urea based product into exhaust line of diesel engine of car, has expansion chamber whose duct is connected to partially vaporized additive product sprayer placed on exhaust line by dosing valve

摘要

The device (1) has a storage tank (4) to store an additive product in a liquid state, and a controlled pressurizing unit formed of thermally insulated intermediate chamber (6), pressure valve (7) and boost pump pressurizing liquid additive product in the tank. An expansion chamber (8) is supplied with the additive product by the pressurizing unit. The chamber is designed to pressurize and vaporize the product by thermal application. A duct (12) of the expansion chamber is connected to a sprayer (5) of partially vaporized additive product placed on an exhaust line (2) by a dosing valve.