AdBlue® Storage and Delivery System for Operation in Winter Conditions Free

Automotive SCR systems are dimensioned to reduce NOx efficiently in normal driving conditions. In markets such as North America and Europe, extreme winter conditions are common over a period of many weeks where temperatures are usually below AdBlue® freezing temperatures at -11°C.
In previous studies and applications, AdBlue® was heated in the tank in a dedicated pot or alternatively by a standardized central heater. Due to the local character of these heating solutions, it was not possible to thaw the full tank volume. The objective of this study is to demonstrate how to significantly improve performance of the SCR system in cold weather conditions for passenger car, light commercial vehicles and SUV applications. The performance improvement is demonstrated by sustainability testing showing how much of the full tank content can be thawed and made available for injection in the exhaust system.
Based on maximum average dosing rates of 250 g/h, external temperatures down to -40°C and depending on the tank shape the heater is designed to optimize tank heating performance. Once the prototype is made, tests are performed to confirm the real system ,performance in these extreme conditions. Test results show the capability of the heating system to reach more than 90% of the tank volume and to ensure that liquid AdBlue® is available for injection, even at the maximum average dosing rate of 250 g/h.

INGENIEURS DE L'AUTO SE DIGITALISE

 

 

La revue Ingénieurs de l’Auto est maintenant diffusée en print et on line. Une grande première pour la SIA avec ce numéro 865, disponible au format numérique.

Cette version digitale sera, à chaque numéro, réservée aux membres de la SIA abonnés.

Exceptionnellement pour ce premier numéro on line, et en lien avec la situation de confinement et de télétravail de beaucoup d’ingénieurs de notre industrie, la version digitale du numéro de Mai est accessible à tous.

 

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