| 摘要 |
An exhaust treatment apparatus has an arm rotatably supported on a test bed and a masking section provided at the distal end portion of the arm. The masking section is connected to an exhaust treatment section via an exhaust pipe. When the arm is turned to a test position from a standby position, the masking section faces an internal combustion engine with a predetermined gap therebetween. In this state, a masking-section cylinder presses the masking section toward the internal combustion engine to set the masking section in close contact with the internal combustion engine. As a result, the exhaust port of the internal combustion engine is connected to an inlet port provided in the masking section. Exhaust gas discharged from the exhaust port is supplied to the exhaust treatment section through the inlet port, the masking section and the exhaust pipe, and is treated in the exhaust treatment section.
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