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Title:
UREA PUMP MODULE
Document Type and Number:
WIPO Patent Application WO/2018/072558
Kind Code:
A1
Abstract:
A urea pump module for mounting on a bottom portion of a urea tank, comprising: a base (1), a pump assembly (2) mounted on the base (1), and a housing assembly (3) covering the pump assembly. The base (1) is provided therein with a circuit board (131) and a urea outlet connector (116). The housing assembly comprises a housing (31) and a first heating blanket (32) in close contact with an inner side of the housing. The housing is provided with a first slot (3123) which enables a urea solution to enter. The first heating blanket (32) surrounds the periphery of the pump assembly and is connected to the circuit board. The pump assembly comprises: a pump unit (21), a pump housing (22) covering the periphery of the pump unit, a first filter (23) surrounding a bottom portion of the pump unit, and a second filter (24) located at the periphery of the first filter. Such configuration improves the effectiveness of filtering, and also prolongs the service life of a urea pump module.

Inventors:
LIN KUI (CN)
GONG CHAO (CN)
XUE YUNFENG (CN)
Application Number:
PCT/CN2017/099322
Publication Date:
April 26, 2018
Filing Date:
August 28, 2017
Export Citation:
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Assignee:
TENNECO SUZHOU EMISSION SYSTEM CO LTD (CN)
International Classes:
F01N3/28; F01N3/20
Domestic Patent References:
WO2016137216A12016-09-01
Foreign References:
CN203098003U2013-07-31
CN102822467A2012-12-12
CN204511603U2015-07-29
Attorney, Agent or Firm:
SUZHOU WISPRO INTELLECTUAL PROPERTY AGENCY (CN)
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