A urea tank pressure maintaining control system and its maintenance method
A technology of control system and urea tank, which is applied in the field of urea tank pressure maintenance control system and its maintenance, can solve the problems of troublesome system maintenance, short maintenance mileage, and many failure risk points, so as to extend the maintenance mileage of the car, avoid dust blockage, The effect of convenient system maintenance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0039] like figure 1 As shown, the embodiment of the present invention provides a urea tank pressure maintenance control system, including an air processing unit 1 , a three-way valve 2 , a gas filter 3 and a urea tank 4 . The air treatment unit 1 is used to dry compressed air. The three-way valve 2 includes a first port 21 , a second port 22 and an exhaust port 23 , the first port 21 communicates with the air processing unit 1 , and the exhaust port 23 communicates with the atmosphere. Preferably, the exhaust port 23 is a one-way port, which can ensure that the atmosphere will not enter the pressure maintaining control system of the urea tank through the exhaust port 23, so as to avoid pollution from the atmosphere. The gas filter 3 includes an input end 31 and an output end 32 , and the input end 31 communicates with the second interface 22 . The gas filter 3 is used to clean the compressed air dried by the air processing unit 1. During the working process of the gas filte...
Embodiment 2
[0044] An embodiment of the present invention provides a maintenance method for a urea tank pressure maintaining control system, which has the urea tank pressure maintaining control system in Embodiment 1. The maintenance method includes the following steps:
[0045] Step S1, the air processing unit 1 dries the compressed air, the compressed air passes through the first air delivery pipe 5, the three-way valve 2 and the second air delivery pipe 6, and enters the gas filter 3 from the input end 31 of the gas filter 3;
[0046] Further, before the step S1, it also includes closing the exhaust port 23 through the electrical port 24, and opening the first interface 21 and the second interface 22. At this time, the first port 21 and the second port 22 of the three-way valve 2 are connected, and the compressed air dried by the air processing unit 1 enters through the first port 21 of the three-way valve 2 and is output from the second port 22 .
[0047] Step S2, the gas filter 3 cle...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More