Urea injection device, urea tank for heating urea, and heating method

A heating method and technology of urea tank, applied in the direction of exhaust device, noise reduction device, machine/engine, etc., can solve the problem of long urea heating and thawing time, achieve shortening urea supply time, reduce NOx emission pollution, and quickly urea thawing Effect

Active Publication Date: 2022-07-12
WEICHAI POWER CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the slow temperature rise of the engine coolant and the influence of water flow at low temperature in winter, the urea heating and thawing time is relatively long
Due to the limitation of the electric heating power of the urea tank heating resistance wire, the urea heating and thawing time is relatively long

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 injection device, urea tank for heating urea, and heating method
  • Urea injection device, urea tank for heating urea, and heating method
  • Urea injection device, urea tank for heating urea, and heating method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] In view of this, the core of the present invention is to provide a urea tank for heating urea, so as to realize rapid thawing of urea and shorten the thawing time. Furthermore, the core of the present invention is to provide a urea injection device having the above-mentioned urea tank. Another core of the present invention is to provide a heating method of a urea tank for heating urea.

[0033] In order to make those skilled in the art better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0034] like Figure 1-Figure 3 As shown, the present invention discloses a urea tank for heating urea, including a urea tank main body 1, a urea heating water pipe 2, a urea electric heating device 3, a partition 4 and a urea replenishing valve 5, wherein the urea heating water pipe 2 Both the urea electric heating device 3 and the urea electric h...

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 discloses a urea tank for heating urea and a heating method thereof, including a urea tank main body, a urea heating water pipe and a urea electric heating device for heating the inside of the urea tank main body; The upper part and the lower part inside the main body of the urea tank are cut off; the urea replenishing valve is located on the partition plate and is used to conduct the upper part and the lower part inside the main body of the urea tank. The amount of urea thawed by the urea electric heating device is small, which can quickly complete the urea thawing and pressure building, shorten the urea supply time under the low temperature environment of the whole vehicle, reduce the ineffective time of SCR, and indirectly reduce the NOx emission pollution in the low temperature environment of the whole vehicle. The urea heating water pipe can thaw the urea in the upper part and continuously flow into the lower part of the main body of the urea tank to complete the continuous supply of urea. The above method realizes rapid thawing of urea and shortens the thawing time. The invention also discloses a urea injection device with the above-mentioned urea tank.

Description

technical field [0001] The invention relates to the technical field of environmental protection, relates to a urea injection device, and in particular to a urea tank and a heating method for heating urea of ​​the urea injection device. Background technique [0002] The existing SCR technology for engines requires a urea injection device to inject a urea aqueous solution into the exhaust gas. The urea injection device mainly includes urea tank, urea pump, urea pipe, urea nozzle and urea heating and defrosting device. Among them, the urea heating and thawing device is mainly used to heat and thaw the urea when it freezes (-11°C), so as to ensure the normal injection of the urea. The existing urea depyrogenation and thawing device mainly has two technical solutions, specifically: water heating and electric heating. Water heating is to use engine coolant to heat components such as urea tank and urea pipe. Electric heating is to use resistance wire to heat components such as u...

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
Patent Type & Authority Patents(China)
IPC IPC(8): F01N3/20F01N3/28
CPCF01N3/2066F01N3/28F01N2610/02F01N2610/1486Y02T10/40
Inventor 岳崇会李卫李万洋张成伟
Owner WEICHAI POWER CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap