Doosan Infracore Co., Ltd.

Seung-Eun Moon

Tae-Hyung Kim

Tae-hyung Kim

Nam-Il Choi

In-Hyuk Im

An exhaust gas cleaning system comprises a reducing agent injection module installed in an housing mounted in an exhaust pipe through which an exhaust gas is discharged, the reducing agent injection module being configured to inject a reducing agent into the housing, a selective catalyst reduction device installed in rear of the reducing agent injection module and configured to catalytic react the reducing agent with nitrogen oxide included in the exhaust gas to reduce the nitrogen oxide, a differential pressure sensor to detect a differential pressure between a pressure in the housing in front of the selective catalyst reduction device and a pressure of the housing in rear of the selective catalyst reduction device, and a control device to receive the pressure information from the differential pressure sensor and to output a first warning signal when the detected differential pressure is lower than a predetermined pressure.

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Incheon, South Korea

Seung-Eun Moon