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DONGFENG DAFC Tianlong Tianjin Urea Dosing Pump 1205710-TE2A0 120510-E8200 Urea Level & Temperature Sensor 3615730-TE2A0 3615730-KR5E3
Urea Dosing Pump Assembly (1205710-TE2A0 / 120510-E8200)
These part numbers refer to an airless, precision urea pump. It does not require a connection to the vehicle's air brake system; instead, it relies entirely on an internal electric pump to autonomously draw in and pressurize the fluid.
1. Precision Operating Pressure: The pump pressurizes the urea solution. This high pressure ensures that, upon exiting the nozzle into the exhaust pipe, the urea atomizes perfectly-resembling a fine mist-thereby allowing for thorough mixing with the exhaust gases.
2. Automatic Anti-Freezing Suction-Back Function: Automotive urea freezes and expands at temperatures below -11°C. To prevent internal lines from cracking due to freezing, the pump continues to operate autonomously for 30 to 60 seconds after the truck's engine is turned off, drawing any residual urea from the lines back into the urea tank.
3. Integrated Heating and Filtration: The pump unit features a built-in PTC electronic heating element that automatically activates in winter to thaw the system. It is also equipped with a high-precision paper filter element designed to trap microscopic impurities in the urea, thereby protecting the nozzle.
Urea Level and Temperature Sensor (3615730-TE2A0 / 3615730-KR5E3)
These sensors are inserted vertically into the urea tank; they function as "all-in-one" probes that communicate directly with the engine control unit (ECU).
1. Level Measurement (Reed Switch Technology): An array of magnetically controlled switches is arranged inside the long probe shaft, surrounded by a magnetic float that moves with the fluid level. It transmits real-time data on the remaining urea volume to the dashboard with a measurement error of less than ±5%.
2. Dual Anti-Freezing (Engine Coolant Heating): The top of the sensor features two dedicated quick-connect ports for coolant. In extremely cold weather, hot engine coolant flows through internal stainless steel piping within the sensor, physically heating and thawing the urea in the tank.
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