Vitesco Technologies Usa, LLC

Continental Automotive Systems Corporation

Christopher Michael Caulkins

Keith Aaron Shaw

Robert Wayne McFarland

Michael Joseph Hornby

Stephen C Bugos

Joshua Lee Hatfield

James A Wynn

A dosing unit having a fluid path defined therethrough and including a fluid injector having an inlet tube; an inlet cup sized and shaped for receiving therein at least part of the inlet tube of the fluid injector, the inlet cup including a fluid inlet; an input tube in fluid communication with the inlet cup via the fluid inlet thereof, the input tube configured to receive fluid from a fluid source; and an insert partly disposed in the inlet tube of the fluid injector, the insert at least partly defining a fluid passage. The fluid passage is in fluid communication with the input tube and the inlet tube of the fluid injector and forms part of the fluid path of the dosing unit. The fluid passage includes a portion extending in a direction that is orthogonal to a longitudinal axis of the fluid injector.

Reductant dosing unit with flow variability reduction and purge improvement device

A reductant dosing unit is disclosed, including a fluid injector having a fluid inlet and a fluid outlet. A flange is disposed proximal to the fluid outlet of the fluid injector and configured to secure to a boss associated with an exhaust path of an internal combustion engine. The flange has a largely flat body portion with a through-bore in fluid communication with the fluid outlet of the fluid injector. The flange further includes an extension which extends from the body portion toward the fluid injector and which is connected to thereto. A thermal isolator is disposed between the fluid outlet of the fluid injector and the flange. The connection between the extension of the flange and the fluid injector includes a hermetic seal, preventing exhaust gases in the exhaust path from passing between the flange extension and the fluid injector. The thermal isolator is only used as a support and thermal isolator.

Thermally isolated reductant dosing unit with hermetic seal

A heat shield for a reductant delivery unit (RDU), the RDU including a fluid injector with a fluid inlet and a fluid outlet, and a clamp flange for attachment to a mounting boss of a vehicle exhaust pipe. The heat shield includes a first portion which is attached to the fluid injector so as to at least partly cover the fluid outlet thereof. The first portion serves as a thermal barrier for the fluid injector and a mechanical barrier for preventing particles in the vehicle exhaust pipe from contacting the fluid injector when the RDU is attached to the vehicle exhaust pipe. The heat shield further includes a second portion which extends radially outwardly from the first portion for sealing the attachment between the clamp flange and the mounting boss of the vehicle exhaust pipe when the RDU is attached thereto.

Heat shield and gasket for reductant delivery unit

A reductant delivery unit (RDU) for a selective catalytic reduction system, including a housing; a fluid inlet disposed at an upper portion of the housing; a fluid return outlet; a fluid nozzle outlet disposed at a lower portion of the housing; an injector disposed within the housing and configured to receive fluid from the fluid inlet and selectively discharge the fluid from the fluid nozzle outlet; and at least one fluid passageway disposed within or around the housing. The fluid passageway provides fluid communication along a first fluid path between the fluid inlet and the fluid nozzle outlet and along a second fluid path between the fluid inlet and the fluid return outlet so that the same fluid discharged by the injector is also used as a coolant for the RDU.

Diesel exhaust fluid cooled reductant delivery unit for selective catalytic reduction systems

A liquid cooled reduction unit includes a diesel exhaust fluid (DEF) injection valve. The valve includes an end portion extending to a distal end. The valve is configured to receive a DEF and force the DEF to exit at the distal end such that the DEF is then directed and applied to an exhaust stream of a vehicle engine. A coolant jacket is selectively filled with a coolant and has an outer side and an inner side. The inner side of the jacket faces a length of the end portion and is separated from the length of the end portion by an air gap.

Growing community of inventors

Virginia Beach, VA, United States of America

Christopher Michael Caulkins