Perkins Engines Company Limited

Andrew Keen

Susannah Freeman

David Mark Heaton

Anton Zimmermann

Christopher Petto

Naseer A Niaz

Anthony C Rodman

Srikanth Tummala

Richard Pill

Sean Butler

Luliana Mocanu

Swapnil Padate

David Phillips

Venkata Sirisha Inkollu

Sirisha Inkollu

Susie Freeman

Naseer Niaz

Samidha Anand

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.

Flow hood assembly

A mixer for an emissions cleaning module is provided. The mixer having an elongate body configured for location within a flowhood and a downstream conduit of an emissions cleaning module. A plurality of apertures are included in the mixer and configured to permit passage of exhaust gas therethrough, to promote mixing, in use of an injected additive and a flow of exhaust gas. An emissions cleaning module including such a mixer is also described.

Mixer and emissions cleaning module

An emissions cleaning module including a heat shield that comprises a first section and a second section that are coupled together around a flowhood. The heat shield substantially fully envelops all external surfaces of the flowhood.

Heat shield and emissions cleaning module

A flowhood is provided to which an upstream conduit and a downstream conduit of an emissions cleaning module can be connected includes a first section and a second section. The second section includes a first aperture for connection to the upstream conduit and a second aperture for connection to the downstream conduit. The first and second apertures may face substantially in the same direction to permit a compact arrangement. A body of the first section may be shaped to channel gas flow from the first aperture to the second aperture. An emissions cleaning module including such a flowhood is also described.

Flowhood and emissions cleaning module

An injector mount for mounting an injector adjacent a curved fluid flow path includes an inner surface defining a boundary of the curved fluid flow path and an aperture between the inner surface and an outer surface. The aperture is configured to receive an injector. The inner surface includes a peripheral region, a central region recessed relative to the peripheral region, and an intermediate region including a convex surface that joins an inner edge of the peripheral region to an outer edge of the central region.

Injector mount

An exhaust mixer provided may be used for mixing an additive, such as urea, in exhaust fluid flow. The exhaust mixer may be useful in reducing or preventing build-up of solid additive deposits by increasing efficiency of mixing of the additive. The exhaust mixer may be located at least partially within a mixing conduit and includes plurality of elongate mixing blades held in spaced configuration by a support. Each mixing blade may have a longitudinal axis extending along a longitudinal axis of the mixing conduit, wherein an injector module may be located upstream of the inlet of the mixing conduit.

Exhaust mixer, emissions cleaning module and method

Growing community of inventors

Peterborough, United Kingdom

Andrew Keen