International Engine Intellectual Property Company, LLC

Gregory A Griffin

Navtej Singh

Adam C Lack

Jeffrey R Kelso

Jason B Arriaga

Timothy Taekhoon Yoon

Prasanna Nagabushan-Venkatesh

Ryan Andrew Wacker

Luis Carlos Cattani

Ivan M Lazich

Scott A Beatty

Jorge Prieto

Mark Schmale

Craig R Knauf

A system for mixing ammonia (reductant) with engine exhaust includes an exhaust flow created by a vehicle engine, an ammonia feed line passing into the exhaust flow, an injector connected to the feed line and positioned within the exhaust flow, the injector having at least one port for discharging ammonia into the exhaust flow, and a mixing plate positioned within the exhaust flow downstream of the ammonia injector and stabilizing at least one of either the feed line and the injector. An aspect of the invention is to stabilize the injector by attaching the mixing plate to the feed line to provide such stability. Alternatively or additionally, the mixing plate is attached to the injector to stabilize. The feed line may even pass through the mixing plate.

Mixing plate as stabilizer for ammonia gas injector

A reductant mixing system having injector and mixing plate positioned within mixing canister is disclosed. Injector discharges reductant directly into vehicle exhaust gases. Mixing plate effects turbulence to mix gases for NO reduction. Mixing plate includes plurality of arms each having surface area and extending from center of plate, barrier region defined by collective surface areas of arms and substantially centered for diverting fluid flow outward, and first and second cut-outs, which allow the gases diverted by barrier region to pass mixing plate into adjacent canister of exhaust treatment system. Each of the first cutouts is defined by outer edge between adjacent arms, and second tier of cut-outs defined by inner edge proximate end of each arm.

Mixing plate providing reductant distribution

A system and method relate to a reductant dosing for use in the reduction of NOx in an exhaust stream is disclosed. The system and method incorporates a separate first or start-up cartridge and an insulated mantel or housing containing at least one to a plurality of main cartridges. The first and main cartridges store an ammonia adsorbing/desorbing material, which releases ammonia gas upon application of sufficient heat. The start-up cartridge permits the initial release of ammonia gas into the exhaust stream even during start-up of an engine, and because it is separate from the main cartridge, the first cartridge cools faster than the main cartridge and can be replenished with ammonia sooner than the main cartridge. The start-up cartridge is housed in or surrounded by a non-insulating debris shield.

Insulated main NH3 cartridge system with separate start-up unit

A mount () for mounting an exhaust gas component () in an exhaust pipe () or in a component housing includes a spring band () and a plurality of spring fingers (). The spring band () is configured to contact and substantially pass around an outer surface () of the exhaust gas component (). The plurality of spring fingers () extend from the spring band () generally axially with respect to the exhaust gas component () and generally radially from the spring band. The spring fingers () contact the exhaust gas component ().

Mount for exhaust system components

Dosing components () in an engine exhaust after-treatment system () that includes an SCR catalyst () are thermally managed by flowing engine coolant through a coolant passage in a urea injector () that injects aqueous urea into the after-treatment system, controlling a three-way valve () to selectively direct coolant flow leaving the urea injector to a first branch that is in heat exchange relationship with a tank () that holds a supply of aqueous urea and a supply pump module () that pumps aqueous urea from the tank to the urea injector, and a second branch that is not in heat exchange relationship with either the tank or the supply pump, and returning coolant from the branches to the engine cooling system.

Thermal management of urea dosing components in an engine exhaust after-treatment system

A gasket () includes one or more elastomeric sections () disposed on a metal substrate (). An elastomeric ring () has an inner diameter () that is smaller than an outer diameter of a fastener (). When the fastener () is inserted into the ring (), the fastener () and gasket () are retained to each other. When a flange () for a device, such as an oil pick-up tube (), is disposed between the fastener () and the gasket (), the gasket () and fastener () are retained to the flange ().

Growing community of inventors

Glendale Heights, IL, United States of America

Gregory A Griffin