Unlock instant, AI-driven research and patent intelligence for your innovation.

Urea tank pressure maintaining control system and maintaining method thereof

A control system and urea tank technology, which are applied to the urea tank pressure maintaining control system and its maintenance field, can solve the problems of troublesome system maintenance, short maintenance mileage, many failure risk points, etc. The effect of convenient system maintenance

Active Publication Date: 2021-04-13
FAW JIEFANG AUTOMOTIVE CO
View PDF34 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing design, the gas filter is easily blocked by dust when cleaning the compressed air, resulting in short maintenance mileage of the car; and the pipeline of the urea tank pressure maintaining control system is complicated, with many valve parts and electrical connectors. There are many joints with the air circuit, not only the assembly is cumbersome, but also there are many failure risk points, the system maintenance is troublesome and the maintenance cost is high

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Urea tank pressure maintaining control system and maintaining method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as 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 fi...

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of automobile chassis, and particularly relates to a urea tank pressure maintaining control system and a maintaining method thereof. The urea tank pressure maintaining control system comprises an air processing unit, a three-way valve, a gas filter, and a urea tank. The air processing unit is used for drying compressed air; the three-way valve comprises a first connector, a second connector and an exhaust port; the first connector is communicated with the air processing unit; the exhaust port is communicated with atmosphere; the gas filter comprises an input end and an output end; the input end is communicated with the second connector; the urea tank is communicated with the output end; and when the urea tank is decompressed and exhausted, the compressed air is exhausted from the exhaust port through the air filter. According to the urea tank pressure maintaining control system, the number of valve parts is small, system pipelines are simple, the number of failure risk points is small, system maintenance is easy, and the maintenance cost is low; and according to the maintenance method of the urea tank pressure maintaining control system, when the urea tank is subjected to pressure relief and exhaust, the gas filter is subjected to blowback cleaning through the compressed air, so that the gas filter is prevented from being blocked by dust, and the automobile maintenance mileage is prolonged.

Description

technical field [0001] The invention relates to the technical field of automobile chassis, in particular to a urea tank pressure maintaining control system and a maintenance method thereof. Background technique [0002] In the existing automobile chassis structure, the structure of the urea tank pressure maintenance control system used for exhaust gas purification is relatively complicated: the compressed air dried by the air processing unit enters the gas filter, and the compressed air filtered by the gas filter passes through the control system. The valve enters the urea tank to establish working pressure for the urea tank. When the urea tank completes urea injection and performs pressure relief and exhaust, the compressed gas in the urea tank is discharged through another control valve. In the existing design, the gas filter is easily blocked by dust when cleaning the compressed air, resulting in short maintenance mileage of the car; and the pipeline of the urea tank pre...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F01N3/20F01N3/28F01N3/30F01N13/00
CPCF01N3/2066F01N3/28F01N3/303F01N3/30F01N13/00Y02A50/20
Inventor 张福魏晓帅丁春澍李林儒高明亮曲健刚和光宇
Owner FAW JIEFANG AUTOMOTIVE CO