Automotive diesel exhaust water cooled HC dosing

摘要

Dosing structure (30) is provided for supplying diesel fuel to an exhaust passage (12) of a diesel system. The dosing structure includes an electrically operated dosing valve (32) constructed and arranged to receive a supply of diesel fuel and to deliver the fuel to the exhaust passage. A water jacket (34) surrounds at least a portion of the dosing valve so as to provide direct water-cooling of the dosing valve. The dosing valve is preferably an electrically controlled fuel injector.