HEATING AND HEAT-SHIELDED PIPING

Title:

HEATING AND HEAT-SHIELDED PIPING

Document Type and Number:

WIPO Patent Application WO/2015/151707

Kind Code:

A1

Abstract:

Provided is heating and heat-shielding piping for aqueous urea solution supply piping for the exhaust gas purification system of a vehicle, the heating and heat-shielding piping being simple and unlikely to fail and being configured so that: when an aqueous urea solution within the aqueous urea solution supply piping is frozen due to low outside temperatures during the stop of the engine, the heating and heat-shielding piping can easily heat and defrost the aqueous urea solution; and when the atmospheric temperature is high during the operation of the engine and there is a danger that the temperature of the aqueous urea solution rises to a temperature higher than or equal to a permissible temperature, the heating and heat-shielding piping shields the aqueous urea solution from the atmospheric temperature. A heating and heat-shielding piping according to an embodiment has: aqueous urea solution piping for transporting an aqueous urea solution; lines of cooling liquid piping for transporting a cooling liquid; a binding member for affixing the aqueous urea solution piping and the lines of cooling liquid piping; and an outside protective tube surrounding the aqueous urea solution piping, the lines of cooling liquid piping, and the binding member. The lines of cooling liquid piping are arranged around the aqueous urea solution piping so as to be in contact therewith.

Inventors:

OKADA MASATSUGU (JP)
SHIMAMURA KAZUHIRO (JP)

Application Number:

PCT/JP2015/056449

Publication Date:

October 08, 2015

Filing Date:

March 05, 2015

Export Citation:

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Assignee:

NITTA CORP (JP)

International Classes:

F01N3/08; F16L53/32; F16L53/70

Foreign References:

JP2013194666A	2013-09-30
JPH0557055U	1993-07-30
JP2008101535A	2008-05-01
JP2014501876A	2014-01-23