5631dd74-7425-414b-ac05-a891780087dc-pdf - POWERTRAIN SYSTEMS Delphi Selective Catalytic Reduction Dosing System The Delphi Selective Catalytic

5631dd74-7425-414b-ac05-a891780087dc-pdf - POWERTRAIN...

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Delphi Selective Catalytic Reduction Dosing System | © Delphi. All rights reserved. | 1 POWERTRAIN SYSTEMS The Delphi Selective Catalytic Reduction (SCR) Dosing System, with its high performance dosing injector, is designed to help reduce the amount of nitrogen oxide (NOx) emissions in the exhaust from light duty diesel vehicles. It offers an innovative design with the ability to maximize emissions reduction potential, including CO 2 , at minimum system cost across a wide range of applications. The system features a unique doser, which integrates a high pressure pump and nozzle providing injection pressure of 50 to 70 bar, superior spray characteristics with particle size of SMD <30 μm, and stable lifetime injection performance. The modular Delphi SCR Dosing System also includes a urea delivery module (UDM) that integrates three sensors, for urea level, temperature and concentration, and filtering and tank heating, into a single component, which fits into the bottom of the manufacturer s tank. Delphi provides support for electronics (hardware and/or software) to control and diagnose the entire SCR system components. Delphi also offers an optional ammonia sensor and a sensor controller as an addition to the system. The Delphi SCR Dosing System provides precise and highly atomized dosing of liquid urea, minimizing the mixing length (between doser and catalyst). This enables the SCR catalyst to be placed closer to the engine for better thermally-aided NOx conversion to help manufacturers meet new and more stringent European emissions standards for diesel vehicles. This thermal advantage minimizes the need for catalyst heating strategies, which further contributes to reduced CO 2 emissions. Benefits System is designed specifically for aqueous urea solution dosing applications. The high pressure injection of 50 to 70 bar produces a highly diffused spray with minute droplets of less than 30 μ SMD to provide high performance dosing.

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