公开(公告)号：WO2019137826A1

公开(公告)日：2019-07-18

申请号：PCT/EP2019/025005

申请日：2019-01-08

Applicant: PERKINS ENGINES COMPANY LIMITED

Inventor： PILL, Richard ,  TUMMALA, Srikanth

IPC: F01N3/20 ,  F01N3/28 ,  F01N13/18 ,  F01N13/00

Abstract: A flowhood assembly 1 comprises an injector 30 which is fixable to a mount 50 in a number of alternative mounted positions defined by rotation of the injector about an injection axis X2 relative to the mount. The injector 30 includes one or more coolant ports 34, 35 which are connected in use to a supply of liquid coolant C. The mount 50 is fixable to a flowhood 10 in an upright, design orientation and in alternative connected positions defined by rotation of the flowhood 10 relative to the mount 50 about a connection axis XI. In a normal use position of the assembly the connection axis XI of the flowhood is arranged at a predefined angle, optionally 0°, relative to a nominal horizontal plane PI. The injector 30 is not fixable to the mount 50 other than in the alternative mounted positions. In use in the normal use position, and in each of the alternative mounted positions of the injector, the injection axis X2 of the injector is oriented downwardly away from the injector relative to the horizontal plane PI, and at least one of the coolant ports 34, 35 is arranged above the horizontal plane PI which passes through the injection axis X2 at an outlet end 32 of the nozzle.

公开(公告)号：WO2018114809A1

公开(公告)日：2018-06-28

申请号：PCT/EP2017/083319

申请日：2017-12-18

Applicant: PERKINS ENGINES COMPANY LIMITED

Inventor： PILL, Richard ,  KEEN, Andrew ,  TUMMALA, Srikanth ,  FREEMAN, Susie ,  INKOLLU, Sirisha ,  BUTLER, Sean

IPC: F01N13/00 ,  F01N3/021 ,  F01N3/20 ,  F01N3/28

Abstract: A flow hood assembly for an engine aftertreatment system having a particulate filter and a selective catalytic reduction device is disclosed. An outer case defines a cavity, the outer case having an inlet and an outlet formed therein, and a neck section formed between the inlet and the outlet. A socket in the outer case is in an opposed relationship to the outlet and is shaped to receive an injector that introduces a reducing agent into the flow of exhaust gases. A baffle reduces a cross-sectional area of the cavity at the neck section to increase exhaust gas velocity at a sensor positioned at the neck section. A deflector member in the cavity between the baffle and the socket directs a portion of the exhaust gases towards the socket and across the injector nozzle.