| 20090101656 | SYSTEM FOR STORING AN ADDITIVE AND FOR INJECTING IT INTO ENGINE EXHAUST GASES - A system for storing an additive and for injecting the additive into exhaust gases of an internal combustion engine. The system includes a tank for storing the additive, an injector and a pump for conveying the additive from the tank to the injector via an injection line, and a purge device configured to force a purge gas to flow through the entire injection line either from the tank to the injector, or from the injector to the tank. | 04-23-2009 |
