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Title:
UREA PUMP, AND CONTROL METHOD AND CONTROL SYSTEM FOR UREA PUMP
Document Type and Number:
WIPO Patent Application WO/2023/125819
Kind Code:
A1
Abstract:
A urea pump, and a control method and control system for the urea pump, wherein the urea pump comprises: a liquid intake pipeline (10); an instant heating type filtering device (40), an inlet (45) of the instant heating type filtering device (40) being in communication with a urea tank (300) via the liquid intake pipeline (10), and the instant heating type filtering device being configured to filter and heat a urea solution flowing in through the liquid intake pipeline (10); a pressure build-up pump (11) arranged at the liquid intake pipeline (10) and configured to drive the urea solution flowing to the instant heating filtering device (40) through the liquid intake pipeline (10); a liquid output line (30) in communication with a first outlet (46) of the instant heating filtering device (40) and configured to deliver a filtered and heated urea solution to a nozzle (200); and a liquid return pipeline (20) in communication with a second outlet (47) of the instant heating filtering device (40) and configured to enable the urea solution in the urea pump to flow back to the urea tank (300) after the urea pump is shut down.

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Inventors:
AN LIHUA (CN)
LIU WEIDA (CN)
LI JUNPU (CN)
LI GUOPENG (CN)
Application Number:
PCT/CN2022/143428
Publication Date:
July 06, 2023
Filing Date:
December 29, 2022
Export Citation:
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Assignee:
WEICHAI POWER CO LTD (CN)
International Classes:
F01N3/28; F01N3/20; F01N9/00
Foreign References:
CN109252924A2019-01-22
CN102202759A2011-09-28
CN102197201A2011-09-21
CN112682133A2021-04-20
CN114483262A2022-05-13
CN202036861U2011-11-16
CN202402109U2012-08-29
KR20180023600A2018-03-07
CN202111643374A2021-12-29
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW CO., LTD. (CN)
Download PDF:
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