GUIDE STRUCTURE AND EXHAUST EMISSION CONTROL DEVICE

摘要

A guide structure leading the flow of exhaust emission to an exhaust emission sensor (55) in devices (50A to 50F) wherein a plurality of exhaust gas purification units (52, 53) are disposed in series in the containers of exhaust emission control devices (50A to 50F) installed in an exhaust gas passage and the exhaust gas sensor (55) is installed between the exhaust gas purification units (52, 53). Thus, in the devices in which the plurality of exhaust gas purification units (52, 53) are disposed in series in the catalyst container installed in the exhaust gas passage, the responsiveness of the exhaust gas sensor installed between the exhaust gas purification units (52, 53) can be increased.