UL2 Urea Dosing System

The UL2 Urea Dosing System is a liquid-only dosing system focuses on oxides of nitrogen (NOx) reduction capabilities that support application ranges from low to high flow selective catalytic reduction (SCR) dosing applications.

Benefits:

• Proprietary design of the injector includes a unique pressure swirl atomizer that offers customized spray angles and flow rates to reduce the risk of deposit formation and enhance mixing.
• Fewer coolant lines allow for a simpler system that is easier to integrate.
• Urea recirculation and freeze robust components offer improved system reliability. Reduced risk of urea crystallization and injector clogging, as urea is always present in the system.
• Optional controls technology within the electronic dosing unit offers flexibility in vehicle integration options.

Features:

Supply Module

• Mounts to the chassis.
• Heated by engine coolant.
• Enhanced freeze resistant components: pressure relief valve, foam cup and membrane around filter, vent cap to allow re-expansion of cup, urea expansion channels.
• Contains optional integrated dosing controls to monitor injector, temperature and pressure sensors

Injector

• Mounts to the decomposition reactor.
• Cooled by urea re-circulation, heated by electric.
• Contains proprietary pressure swirl atomizer with reinforced 11-layer nozzle.
• Enhanced freeze resistant components: urea expansion channels, temperature and pressure sensors with expansion bellows.
• Contains injector, temperature and pressure sensor

Brochures:

• UL2 Liquid-Only Urea Dosing System [English]

Technical Specifications:

• Capable of meeting high-flow dosing rates of up to 20.5 kg/hr.
• Shears droplets to sizes rivaling those of air-assisted system, as low as 24 SMD.
• Includes a pressure diverter valve to allow more urea to be released for high-flow optimization, if required.