| 摘要 |
PROBLEM TO BE SOLVED: To inhibit freezing of urea water in a piping route of an urea water addition system.SOLUTION: This invention relates to a connector assembly 70 used for an urea water addition system of a diesel engine. The connector assembly is used for connecting a hose 63 to an urea water nipple 72 and a heat fluid nipple 73 that are protruded from an apparatus 71. The hose includes an inner hose 81 and an outer hose 83. The connector assembly includes: a connector 74 fitted to the urea water nipple; and a nipple cover 75 fitted to the heat fluid nipple. The connector includes an inner tube 84, an outer tube 85, a tubular clearance 86, a front end wall 87 and a heat fluid inlet/outlet 88. The nipple cover includes a heat fluid chamber 93 and a heat fluid inlet/outlet 95. The connector assembly further includes a connection hose 76 for connecting the heat fluid inlets/outlets 88, 95 with each other.SELECTED DRAWING: Figure 2 |
