HEAT-UP AND HEAT SHIELDING PIPE

申请公布号：JP2015197079(A)

申请号：JP20140076029

申请日期：2014.04.02

申请公布日期：2015.11.09

申请人：

NITTA IND CORP

发明人：OKADA MASAJI;SHIMAMURA KAZUHIRO

分类号：F01N3/08;F01P3/20;F01P11/04;F16L9/18;F16L53/00;F16L59/147

主分类号：F01N3/08

摘要：PROBLEM TO BE SOLVED: To provide a simple and less-troubled heat-up and heat shielding pipe for urea water supply pipe of an exhaust emission control system of a vehicle in which, when urea water in a pipe is frozen due to low surrounding air temperature under a stopped condition of an engine, urea water temperature can be easily increased and its frozen state can be thawed and in turn, when surrounding air temperature is high during operation of the engine and there may occur a dangerous state that urea water temperature is increased by more than its allowable temperature, urea water temperature is shielded against the surrounding air temperature.SOLUTION: The heat-up and heat shielding pipe in this preferred embodiment comprises urea water pipe for use in transferring urea water, a plurality of cooling liquid pipes for transferring cooling liquid, a binding member for fixing both pipes, and an external protection tube enclosing all the members described above, the cooling liquid pipes being arranged around the urea water pipe while being contacted with pipes to each other.

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