发明名称 |
Leak detection method of reducing agent pumping system |
摘要 |
A leak detection method of a reducing agent pumping system including a reducing agent tank, an injector, a line formed through the reducing agent tank and the injector, and a pumping module disposed in the line may include pumping a reducing agent to the injector with a pump of the pumping module and detecting a pressure thereof, operating the pump at a predetermined load or less and stopping an operation of the injector, when it is determined that a detected pressure is between a first set value and a second set value, operating a heater for heating the reducing agent in the pumping module for a predetermined time, and determining that leak occurred in the line between the pumping module and the injector, when it is determined a temperature of the reducing agent in the pumping module is lower than a predetermined value. |
申请公布号 |
US9638086(B2) |
申请公布日期 |
2017.05.02 |
申请号 |
US201414283015 |
申请日期 |
2014.05.20 |
申请人 |
Hyundai Motor Company;Kia Motors Corporation |
发明人 |
Shin Jaeseok |
分类号 |
G01M3/00;F01N11/00;F01N3/20;F01N13/00 |
主分类号 |
G01M3/00 |
代理机构 |
Morgan, Lewis & Bockius LLP |
代理人 |
Morgan, Lewis & Bockius LLP |
主权项 |
1. A leak detection method of a reducing agent pumping system including a reducing agent tank, an injector, a line formed through the reducing agent tank and the injector, and a pumping module disposed in the line, the method comprising:
pumping a reducing agent to the injector with a pump of the pumping module and detecting a pressure of the reducing agent; operating the pump at a predetermined load or less and stopping an operation of the injector, when it is determined that a detected pressure is larger than a first set value and smaller than a second set value which is larger than the first set value; operating a heater for heating the reducing agent in the pumping module for a predetermined time; and determining that leak occurred in the line between the pumping module and the injector, when it is determined a temperature of the reducing agent in the pumping module is lower than a predetermined value. |
地址 |
Seoul KR |