Patent ID: 8622316
Filing Date: 2014-01-07
Classification: F01N,Y02T

Abstract:
1. An SCR injection unit, comprising: an injector; a support structure for the injector; a cooling body for the injector; a flange of an exhaust pipe, and a sleeve element for the injector, wherein the cooling body is a passive cooling body which cools the injector only by passive cooling without using liquid cooling fluid, wherein the sleeve element has an elongated, thin-walled connecting section constituting a heat flow throttle, wherein the thin-walled connecting section has a length to thickness ratio greater than 3, and wherein the sleeve element has opposing axial ends, one axial end being at least indirectly connected to the flange of the exhaust pipe and the other axial end being at least indirectly connected to the support structure for the injector.