公开(公告)号：US20180363532A1

公开(公告)日：2018-12-20

申请号：US15623714

申请日：2017-06-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Anil Yadav ,  Prashant Kumar Mishra ,  Nikhil Undale

IPC: F01N3/28 ,  F01N3/30 ,  B01D53/94

Abstract: The exhaust gas system includes a catalytic converter having an inlet and an outlet, a primary exhaust pipe, an exhaust nozzle and a secondary exhaust pipe. The primary exhaust pipe includes a proximate end and a distal end. The primary exhaust pipe may be affixed to the outlet of the catalytic converter at the proximate end of the primary exhaust pipe. The secondary exhaust pipe may be coupled to the distal end of the primary exhaust pipe via the exhaust nozzle. The exhaust nozzle includes a body region which is integral to a frustoconical defined region. The body region of the exhaust nozzle may be engaged to the distal end of the primary exhaust pipe. The frustoconical defined region of the exhaust nozzle may be engaged to the secondary exhaust pipe.

公开(公告)号：US10138789B1

公开(公告)日：2018-11-27

申请号：US15652703

申请日：2017-07-18

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Prashant Kumar Mishra ,  Asif Iqbal Siddiqui ,  Anil Yadav ,  Rahul Mital

IPC: F01N3/00 ,  F01N3/28 ,  F01N3/20

Abstract: An exhaust gas treatment system includes a selective catalytic reduction device (SCR); a reductant injector upstream from the SCR and configured to communicate reductant into the SCR via a conduit defined by an outer periphery, a first mixer disposed within the conduit upstream from the reductant injector, and a second mixer disposed within the conduit downstream from the reductant injector and upstream from the SCR. Each of the first mixer and the second mixer comprises a plurality of blades extending between a center region of the conduit to the conduit periphery, wherein each of the blades at least partially obstructs fluid flow through the conduit and are angled relative to a cross sectional plane of the conduit such that fluid flow is permitted between adjacent blades, and the plurality of blades form a turbulence plane defined by a plane angle measured from the two outermost blades of the turbulence plane.